From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry




From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
-------------- next part --------------
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
-------------- next part --------------
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
-------------- next part --------------
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
-------------- next part --------------
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
-------------- next part --------------
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai

From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard

From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.

From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.

From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.

From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx

From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.

From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back the
message I send to it, leaving it untouched. On Windows XP this runs fine
without any problem (for message size from 1000 up to 12000). On Redhat
Linux 5 (kernel:  2.6.18) using the same test environment and same code
I get errors when reading messages longer than ~4200 bytes (this value
varies, can be up to 10000 depending how much debug print outs I have in
the test code) . A message has the format: [01][xy][<payload>][00],
where xy specifies the length in byte of the payload, which consists of
bytes of ANY value (0-255). When reading, I ask the number of bytes
available and then read this amount of bytes. I repeat this until I
received all expected bytes of the message (I do know the length of the
message from the value xy ,which I read first. Whenever the receipt of
the message went wrong I saw, that I received 128 bytes more than
expected, and in fact, when analyzing, what I actually got, I see that a
sequence of 128 bytes have been received twice (it's ALWAYS 128). 

What could the problem be and how can I solve this?

 

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From bschlining at gmail.com  Thu Apr 22 10:55:21 2010
From: bschlining at gmail.com (Brian Schlining)
Date: Thu, 22 Apr 2010 09:55:21 -0700
Subject: [Rxtx] CVS Stil down...any plans to fix it.
Message-ID: <s2yae0cc0d81004220955ic0f76b30m9d9fb9fc4818ad4d@mail.gmail.com>

Hi Trent et al,

The CVS server for RXTX is still down (and has been for a while). Any plans
to bring it back up? I know qbang is near and dear to your heart but it
looks like it's time to move the RXTX source out of CVS and qbang. (and
clean up the branching mess, i.e checking out the commapi-0-0-1 to get the
main source code is confusing to folks and comes up again and again on the
mailing list).

Are there plans to move the source to something else (googlecode, bitbucket,
github)?

-- 
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
Brian Schlining
bschlining at gmail.com
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From hansj.rupp at googlemail.com  Fri Apr 23 08:22:04 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Fri, 23 Apr 2010 16:22:04 +0200
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
Message-ID: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone of
you an idea what  might be going there?

Thanks and Greetings

Hans Rupp
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From Wei.Shen at Honeywell.com  Fri Apr 23 08:35:35 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 23 Apr 2010 10:35:35 -0400
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION
In-Reply-To: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
References: <z2w49efbb1e1004230722qab1ac208l33291142bdae3f9@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDF39A6@DE08EV1001.global.ds.honeywell.com>

Hello Hans,

 

Are you using thread pools? I had a similar problem. Quit using thread
pool fixed it. 

 

 

Wei

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Hans Rupp
Sent: April 23, 2010 8:22 AM
To: rxtx at qbang.org
Subject: [Rxtx] EXCEPTION_ACCESS_VIOLATION

 

Hello list,

my name is Hans and i'm new to rxtx and got a problem.
I write an application that should read data from two COM-Ports (one
over USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>From time to time i get this fatal error from the jre:

AbstractRxTxSerialPort.run thread gestartet!
AbstractRxTxSerialPort.openSerialPort: COM9, 4800 owned: false
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugriff verwe
igert

AbstractRxTxSerialPort.run() port: COM9
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null
gnu.io.PortInUseException: Unknown Application
        at gnu.io.CommPortIdentifier.open(CommPortIdentifier.java:354)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.openSerialPort(AbstractRxTxSer
ialPort.java:241)
        at
org.forgis.rxtx.AbstractRxTxSerialPort.run(AbstractRxTxSerialPort.jav
a:368)
        at java.lang.Thread.run(Unknown Source)
threadControler running!!! gps: false fms: true
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
ThreadControler waiting for fmsThread to die
fmsThread: state: TIMED_WAITING
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10007d0d, pid=1952,
tid=2036
#
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing
windows-x86
)
# Problematic frame:
ThreadControler waiting for fmsThread to die#
CfmsThread: state: RUNNABLE
  [rxtxSerial.dll+0x7d0d]
#
# An error report file with more information is saved as:
# C:\fmslogger0.8\hs_err_pid1952.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Other times i get only the

gnu.io.PortInUseException: Unknown Application
although the commportidentifier of this tells 
AbstractRxTxSerialPort.run() owned: false
AbstractRxTxSerialPort.run() owner: null

And sometimes my application is runnig as desired.

I'm not able to find the cause of this behaviour by myself, has anyone
of you an idea what  might be going there?

Thanks and Greetings

Hans Rupp

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From hansj.rupp at googlemail.com  Tue Apr 27 04:31:18 2010
From: hansj.rupp at googlemail.com (Hans Rupp)
Date: Tue, 27 Apr 2010 12:31:18 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
Message-ID: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>

Hello folks,

It's me again.
I write an application that should read data from two COM-Ports (one over
USB to serial, one over RS232) and write to a common log-file.
I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.

This time I used code from your examples to discover available comm ports.

Here's my code

import java.io.*;
import java.util.*;

import gnu.io.*; // for rxtxSerial library

public class Test
{
       static CommPortIdentifier portId;
       static CommPortIdentifier saveportId;
       @SuppressWarnings("unchecked")
    static Enumeration        portList;
       InputStream           inputStream;
       SerialPort           serialPort;
       Thread           readThread;

       static String        messageString = "Hello, world!";
       static OutputStream      outputStream;
       static boolean        outputBufferEmptyFlag = false;

       public static void main(String[] args)
       {
          getAvailableSerialPorts();
       }

        @SuppressWarnings("unchecked")
        public static void getAvailableSerialPorts() {
//            HashSet<CommPortIdentifier> h = new
HashSet<CommPortIdentifier>();
            HashSet<CommPort> h = new HashSet<CommPort>();
            while(true)
            {
                System.out.println("test");
                Enumeration thePorts =
CommPortIdentifier.getPortIdentifiers();
                while (thePorts.hasMoreElements()) {
                    CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                    switch (com.getPortType()) {
                    case CommPortIdentifier.PORT_SERIAL:
                        try {
                            CommPort thePort = com.open("CommUtil", 50);
                            System.out.println("1port: "+thePort.getName()+"
opened!");
                            System.out.println("1port: "+thePort.getName()+"
owned: "+com.isCurrentlyOwned());
                            System.out.println("1port: "+thePort.getName()+"
owner: "+com.getCurrentOwner());

                            h.add(thePort);
                        } catch (PortInUseException e) {
                            System.out.println("1Port, "  + com.getName() +
", is in use.");
                        } catch (Exception e) {
                            System.err.println("Failed to open port " +
com.getName());
                            e.printStackTrace();
                        }
                    }
                }
                for(Iterator<CommPort> cit = h.iterator();cit.hasNext();)
                {
                    CommPort cp = cit.next();
                    cp.close();
                    System.out.println("2port: "+cp.getName()+" closed!");
                    cit.remove();

                }
                    thePorts = CommPortIdentifier.getPortIdentifiers();
                    while (thePorts.hasMoreElements()) {
                        CommPortIdentifier com = (CommPortIdentifier)
thePorts.nextElement();
                        switch (com.getPortType()) {
                        case CommPortIdentifier.PORT_SERIAL:
                            try {
                                CommPort thePort = com.open("CommUtil", 50);

                                System.out.println("3port:
"+thePort.getName()+" reopened!");
                                System.out.println("3port:
"+thePort.getName()+" owned: "+com.isCurrentlyOwned());
                               h.add(thePort);
                            } catch (PortInUseException e) {
                                System.out.println("3Port, "  +
com.getName() + ", is in use.");
                            } catch (Exception e) {
                                System.err.println("Failed to open port " +
com.getName());
                                e.printStackTrace();
                            }
                        }
                    }
                    for(Iterator<CommPort> cit =
h.iterator();cit.hasNext();)
                    {
                        CommPort cp = cit.next();
                        cp.close();
                        System.out.println("4port: "+cp.getName()+"
closed!");
                        cit.remove();

                    }

                try
                {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }

}

And here's the output:

Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
verweigert


Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860):
Zugri3Port, COM5, is in use.
4port: //./COM1 closed!
test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1Port, COM5, is in use.
2port: //./COM1 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3Port, COM5, is in use.
4port: //./COM1 closed!

This means that at the first try to open COM5 it is already marked as in Use
although no other application is accesing this port and i get the error from
native code.
And once this happens i have no chance open the port in my application.

Is there someone who can tell me whats going wrong and what i can do to
avoid this?

thanks

hans
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From mariusz.dec at gmail.com  Tue Apr 27 08:53:23 2010
From: mariusz.dec at gmail.com (Mariusz Dec)
Date: Tue, 27 Apr 2010 16:53:23 +0200
Subject: [Rxtx] Error 0x5 at
	/home/bob/foo/rxtx-devel/build/../src/termios.c(860): Zugriff
	verweigert
In-Reply-To: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
References: <h2s49efbb1e1004270331obf02a319x7d1f398eb6c4a0b7@mail.gmail.com>
Message-ID: <r2s73a89f361004270753m42c1f522t72b05c63706f3523@mail.gmail.com>

2010/4/27 Hans Rupp <hansj.rupp at googlemail.com>

> Hello folks,
>
> It's me again.
> I write an application that should read data from two COM-Ports (one over
> USB to serial, one over RS232) and write to a common log-file.
> I'm using rxtx2.1-7r2 binaries on jre 6.0_18, os is win xp.
>
> This time I used code from your examples to discover available comm ports.
>
[...]


Hi,
I have attached my example which works good on Linux, Win XP/Vista/7 and
Macintosh.
I am using RXTX2.2 pre, Java xxx18.
Get 2.2 pre and try it.

And now bad news:
Your example works on my XP system very good as well - COM1 mainboard
hardware, COM7, COM11 USB VCP dongles
Maybe your VCP drivers are not enough good?
I am using FTDI USB/RS hardware and firmware only.

test
1port: //./COM1 opened!
1port: //./COM1 owned: true
1port: //./COM1 owner: CommUtil
1port: //./COM7 opened!
1port: //./COM7 owned: true
1port: //./COM7 owner: CommUtil
1port: //./COM11 opened!
1port: //./COM11 owned: true
1port: //./COM11 owner: CommUtil
2port: //./COM11 closed!
2port: //./COM1 closed!
2port: //./COM7 closed!
3port: //./COM1 reopened!
3port: //./COM1 owned: true
3port: //./COM7 reopened!
3port: //./COM7 owned: true
3port: //./COM11 reopened!
3port: //./COM11 owned: true
4port: //./COM11 closed!
4port: //./COM1 closed!
4port: //./COM7 closed!
test

In my application:
Error 0x05 from native part I have only when USB is disconnected while port
is open.
After detecting exception when port is disonnected, I am waiting in
application for this port's identifier will appears back on the list, and
port goes back to normal work after next opening in the same application
session.
No problems.



Regards
Mariusz Dec
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From luc.peuvrier at ses-esl.com  Thu Apr 29 03:15:37 2010
From: luc.peuvrier at ses-esl.com (Luc PEUVRIER)
Date: Thu, 29 Apr 2010 11:15:37 +0200
Subject: [Rxtx] system error displayed on console should be throw as
	IOException
Message-ID: <1B1721CFDAA644448FFD1B5A7EC2103F02F11CC5@lune.ses-esl.com>

Having some problems on windows (part access denied) we discover that system errors are displayed on console.

I think it should not be displayed on console, and should throw an IOException with message set to system error message (which one currently display on console).

 

Best regards

 

Luc PEUVRIER

Ing?nieur d?veloppement logiciel

I.T. Enginneer

luc.peuvrier at ses-esl.com

 

__________________________________

                                                                                    

 

39 rue de Montigny 

95100 Argenteuil - France  

n T?l. : + 33 1 34 34 42 92

n  Fax : + 33 1 34 34 61 62 

n  www.store-electronic-systems.com

n  www.ses-esl.com

 

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From caixote.san at gmail.com  Mon Apr  5 09:35:58 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 16:35:58 +0100
Subject: [Rxtx] Using rxtx-2.1-7r2 in Mac
Message-ID: <4BBA035E.9020207@gmail.com>

Hello!

The rxtx version I'm using is 2.1-7r2 (not the pre).

I went to the source at 
gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83) and found 
this
 System.loadLibrary( "rxtxSerial" );


Is this supposed to load the rxtxSerial.dll? How does it work with macs?

  I'm trying to use rxtx-2.1-7r2 in a Mac with an Arduino controlled 
through Processing. This to explain the jars attached.

  When I run the project attached I get:

java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path 
thrown while loading gnu.io.RXTXCommDriver
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1755)
    at java.lang.Runtime.loadLibrary0(Runtime.java:822)
    at java.lang.System.loadLibrary(System.java:993)
    at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
    at processing.serial.Serial.list(Serial.java:557)
    at testArduino.BlinkSerial.setup(BlinkSerial.java:24)
    at processing.core.PApplet.handleDraw(PApplet.java:1571)
    at processing.core.PApplet.run(PApplet.java:1496)
    at java.lang.Thread.run(Thread.java:613)






From caixote.san at gmail.com  Mon Apr  5 10:03:07 2010
From: caixote.san at gmail.com (kotoko)
Date: Mon, 05 Apr 2010 17:03:07 +0100
Subject: [Rxtx] Welcome to the "Rxtx" mailing list (Digest mode)
In-Reply-To: <mailman.156.1270478884.2799.rxtx@qbang.org>
References: <mailman.156.1270478884.2799.rxtx@qbang.org>
Message-ID: <4BBA09BB.8070303@gmail.com>

Hi

  I can't get the source code out of the repository. It ask for the 
pass, what should I do?

kotoko


From jerrypedersen at telus.net  Wed Apr  7 16:05:06 2010
From: jerrypedersen at telus.net (Jerry Pedersen)
Date: Wed, 07 Apr 2010 22:05:06 +0000
Subject: [Rxtx] DS TINI - Could not find the class gnu/io/PortInUseException
Message-ID: <4BBD0192.6000002@telus.net>

Hello

I am trying to compile a small piece of code to talk to an OLED display 
attached to the serial port on a Dallas Semiconductor TINI (DS80C400) 
board.
The code works fine when compiled and run with javax.comm, but I'm 
trying to use RXTX.

I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 
2.1.7 ( rxtx-2.1.7-bins-r2.zip), but the build script reports the 
following runtime error in NetBeans:

"...Could not finish loading: java.lang.ClassNotFoundException: Could 
not find the class gnu/io/PortInUseException
Exception caught: java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
java.lang.RuntimeException: Could not finish loading: 
java.lang.ClassNotFoundException: Could not find the class 
gnu/io/PortInUseException
         at 
com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
         at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."

During the compile I see the following, which seems to indicate the 
PortInUseException class was loaded:

"[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
[loading 
C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
[loading C:\Program 
Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"

I searched the RXTX mail archive but found no mention of this. In other 
searches I found an email from 2008 that mentions this same problem
with RXTX 2.1.7 
(http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330). Any 
suggestions most welcome.

Thanks,

Jerry





From bill7007 at gmail.com  Thu Apr  8 09:49:50 2010
From: bill7007 at gmail.com (Bill Johnson)
Date: Thu, 8 Apr 2010 11:49:50 -0400
Subject: [Rxtx] DS TINI - Could not find the class
	gnu/io/PortInUseException
In-Reply-To: <4BBD0192.6000002@telus.net>
References: <4BBD0192.6000002@telus.net>
Message-ID: <h2jce7eac581004080849k4dfab1e8v6a6fa2985c63e720@mail.gmail.com>

Jerry,
Somewhere in you source code you probably have:
import javax.comm.*;

Try replacing it with:
import gnu.io.*;

For RXTX usage you want to make sure any of the comm related references are
pulled from the "gnu.io" namespace instead of old Sun's "javax.comm"
namespace. From your description, I am guessing you are compiling JavaKit.
JavaKit.java uses that import as the first line of code.

+BillJ

On Wed, Apr 7, 2010 at 6:05 PM, Jerry Pedersen <jerrypedersen at telus.net>wrote:

> Hello
>
> I am trying to compile a small piece of code to talk to an OLED display
> attached to the serial port on a Dallas Semiconductor TINI (DS80C400) board.
> The code works fine when compiled and run with javax.comm, but I'm trying
> to use RXTX.
>
> I compile successfully under XP using Java 1.5, Netbeans 5, and RXTX 2.1.7
> ( rxtx-2.1.7-bins-r2.zip), but the build script reports the following
> runtime error in NetBeans:
>
> "...Could not finish loading: java.lang.ClassNotFoundException: Could not
> find the class gnu/io/PortInUseException
> Exception caught: java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
> java.lang.RuntimeException: Could not finish loading:
> java.lang.ClassNotFoundException: Could not find the class
> gnu/io/PortInUseException
>        at
> com.dalsemi.system.classloader.TINIClassLoader.beginLoading(TINIClassLoader.java:142)
>        at com.dalsemi.TINIConvertor.go(TINIConvertor.java:761)...etc..."
>
> During the compile I see the following, which seems to indicate the
> PortInUseException class was loaded:
>
> "[loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/CommPort.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/PortInUseException.class)]
> [loading
> C:\TINI_400\tini1.17\bin\tiniclasses.jar(java/io/IOException.class)]
> [loading C:\Program
> Files\Java\jdk1.5.0_11\jre\lib\ext\RXTXcomm.jar(gnu/io/UnsupportedCommOperationException.class)]"
>
> I searched the RXTX mail archive but found no mention of this. In other
> searches I found an email from 2008 that mentions this same problem
> with RXTX 2.1.7 (http://www.weathertoys.net/phpBB3/viewtopic.php?f=3&t=330).
> Any suggestions most welcome.
>
> Thanks,
>
> Jerry
>
>
>
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>
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From pascal_kesseli at hotmail.com  Sat Apr 10 03:41:17 2010
From: pascal_kesseli at hotmail.com (Pascal Kesseli)
Date: Sat, 10 Apr 2010 09:41:17 +0000
Subject: [Rxtx] Cross-compiling rxtx
Message-ID: <COL109-W105EC5958659F14FC88729F2140@phx.gbl>


Hi everyone

Currently, I am trying to compile RXTX for various
arm-based platforms, each using a different prefix for its build
tools, e.g. xscale_be-g++ . How can rxtx be configured to compile using
these cross-compilers? ./configre --target=xscale_be issues an error
about the platform not being available.

Thanks in advance and best regards
Pascal Kesseli 		 	   		  
_________________________________________________________________
Pingu Panik! Super Spiel, neu im Messenger.
http://www.messengerportal.ch/mymessenger_games.aspx
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From hairyal at gmail.com  Wed Apr 14 09:19:58 2010
From: hairyal at gmail.com (Hai Ryal)
Date: Wed, 14 Apr 2010 16:19:58 +0100
Subject: [Rxtx] Getting Source
Message-ID: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>

Hi there, I'm trying to get the source code for RXTX.? I followed the
instructions on the website and the wiki, which suggested that the
source would be available at
:pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
seem to work.  I've also tried searching the mailing list, but that
gives an "Internal Server Error".  Hope I'm not being stupd and
someone can help me.  Best regards, Hai


From jdp at syntelos.org  Wed Apr 14 09:56:27 2010
From: jdp at syntelos.org (John Pritchard)
Date: Wed, 14 Apr 2010 11:56:27 -0400
Subject: [Rxtx] Getting Source
In-Reply-To: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
References: <k2vdcf972b31004140819ta3c57999ye6a12c058ae8c80a@mail.gmail.com>
Message-ID: <q2nfe287e141004140856j77014478o7f63ed20943cecfb@mail.gmail.com>

Hi Hai,

Get the source from the download, according to recent experiences the CVS
server is known to not be available..

//john

On Wed, Apr 14, 2010 at 11:19 AM, Hai Ryal <hairyal at gmail.com> wrote:

> Hi there, I'm trying to get the source code for RXTX.  I followed the
> instructions on the website and the wiki, which suggested that the
> source would be available at
> :pserver:anonymous at qbang.org:/var/cvs/cvsroot.  However, this does not
> seem to work.  I've also tried searching the mailing list, but that
> gives an "Internal Server Error".  Hope I'm not being stupd and
> someone can help me.  Best regards, Hai
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx
>



-- 
http://www.google.com/profiles/john.douglas.pritchard
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From HowardZ at howardz.com  Thu Apr 15 07:10:32 2010
From: HowardZ at howardz.com (HowardZ at howardz.com)
Date: Thu, 15 Apr 2010 09:10:32 -0400
Subject: [Rxtx] Please issue new version of rxtx
In-Reply-To: <mailman.10531.1271256505.2800.rxtx@qbang.org>
References: <mailman.10531.1271256505.2800.rxtx@qbang.org>
Message-ID: <4BC71048.30900@howardz.com>

Hi,

I have been using rxtx for over a year now.
Still - MAC users can not use my s/w.
I know the problem has been fixed, but I can not compile/make rxtx for MAC.

Don't you think it's about time to issue a new version with all the 
binary files for Windows, Linux, and Mac ?

Howard


From rvraaphorst at gmail.com  Thu Apr 15 09:03:05 2010
From: rvraaphorst at gmail.com (Ronald Raaphorst, van)
Date: Thu, 15 Apr 2010 17:03:05 +0200
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
Message-ID: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>

Hi,

I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:

Invalid memory access of location 0x128b64938 rip=0x1281c012f

I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
(Installed in /System/Library/Java/Extensions) but I keep getting the exception.

I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176

Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?

Best regards,
Ronaldo




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From greg.johnson at rbr-global.com  Thu Apr 15 09:17:30 2010
From: greg.johnson at rbr-global.com (Greg Johnson)
Date: Thu, 15 Apr 2010 11:17:30 -0400
Subject: [Rxtx] RXTX Invalid memory access when disconnecting on OSX 1.6
In-Reply-To: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
References: <99FC95BB-EA40-4756-87D4-FB5F388E1B4A@gmail.com>
Message-ID: <4D9860CF-ADA7-45C7-87E4-6DA4DBA01CE7@rbr-global.com>

That would be a disconnect of a USB serial dongle?  RXTX doesn't handle it very well - there was some discussion of patches, but there is no release with the patches in, and the rumour is that the CVS server is now AWOL.  I wonder if someone would want to fork this project and start regular releases?
--
Greg Johnson, PhD
Director of Engineering
http://www.rbr-global.com


On 2010-04-15, at 11:03 , Ronald Raaphorst, van wrote:

> Hi,
> 
> I'm trying to get RXTX working on my mac (OSX 1.6, latest update, java 1.6), but when disconnecting I get a exception:
> 
> Invalid memory access of location 0x128b64938 rip=0x1281c012f
> 
> I'm using the latest version (rxtx-2.2pre2-bins from rxtx.qbang.org/wiki/index.php/download) 
> and I've tried to use librxtxSerial.jnilib from http://iharder.sourceforge.net/current/java/
> (Installed in /System/Library/Java/Extensions) but I keep getting the exception.
> 
> I've also seen https://www.sunspotworld.com/forums/viewtopic.php?f=25&t=2176
> 
> Does anybody know what's wrong, and is an update due soon, or do I have to work around the problem (i.e. connect on startup and never disconnect) ?
> 
> Best regards,
> Ronaldo
> 
> 
> 
> 
> _______________________________________________
> Rxtx mailing list
> Rxtx at qbang.org
> http://mailman.qbang.org/mailman/listinfo/rxtx

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From shenweix at hotmail.com  Thu Apr 15 21:33:02 2010
From: shenweix at hotmail.com (Wei Shen)
Date: Thu, 15 Apr 2010 21:33:02 -0600
Subject: [Rxtx] multithreading problem with rxtx
Message-ID: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>


Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got fault results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial
 ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. Thanks in advance.


Wei Shen
 		 	   		  
_________________________________________________________________
Hotmail & Messenger are available on your phone. Try now.
http://go.microsoft.com/?linkid=9724461
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From george.dma at gmail.com  Thu Apr 15 22:38:57 2010
From: george.dma at gmail.com (George H)
Date: Fri, 16 Apr 2010 07:38:57 +0300
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
Message-ID: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>

On Fri, Apr 16, 2010 at 6:33 AM, Wei Shen <shenweix at hotmail.com> wrote:
> Hi experts,
>
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got fault
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!
>
> I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java
> version is 1.5_10. Thanks in advance.
>
>
> Wei Shen

I've used rxtx 2.1 and the newer version 2.2 in a multi-threading
environment without problems. But I was using java 1.6. I guess you
can try upgrading your vm to 1.6 and see if that makes a difference.
Also trying out version 2.2-pre2 won't hurt.


From msemtd at googlemail.com  Fri Apr 16 07:22:34 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Fri, 16 Apr 2010 14:22:34 +0100
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
Message-ID: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>

No problems with rxtx and multi-threading here (16 serial ports
running simultaneously 24/7 within same JVM (1.5 and 1.6)). I'd
suspect from the evidence given that your techniques are not
thread-safe.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Fri Apr 16 11:30:49 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 13:30:49 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>

Hi experts,

I am trying to communicate with multiple serial ports concurrently using multi-threading.  However, the JVM crashed a few times. I even got wrong results some time. I do not know what is wrong. The program worked fine without multi-threading (communicate with serial ports sequentially).Please help! 

I am using rxtx 2.1-7r2 on windows XP(rxtxSerial.dll and RXTXcomm.jar). Java version is 1.5_10. 

The following is the error message when JVM crashes:

 

# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)

# Problematic frame:

# C  [rxtxSerial.dll+0x2c2f]

 

Thanks in advance.


Wei Shen

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From jdp at syntelos.org  Fri Apr 16 13:45:17 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 15:45:17 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
Message-ID: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john
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From Wei.Shen at Honeywell.com  Fri Apr 16 16:12:04 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Fri, 16 Apr 2010 18:12:04 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>

I think I am using one thread per port. However, I am not entirely sure.
The following are my code I used to discover the valid serial ports.

 

ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

 

for (final CommPortIdentifier com : ports) {

      Future<SerialPort> validLinkFuture = taskCompletionService

                  .submit(new Callable<SerialPort>() {

 

                        public SerialPort call() throws Exception {

                        // (send special message to the port and expect
a valid response                                

                        getValidSerialPorts(com);

                  }

            });

 

}

 

Any comments?

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of John Pritchard
Sent: April 16, 2010 1:45 PM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Probably want one thread on a port exclusively
I'm using one thread per port, myself

//john

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From jdp at syntelos.org  Fri Apr 16 21:42:35 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:42:35 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
Message-ID: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>

Hi Wei,

This is complicated.. should rather have a class that subclasses thread or
task or runnable and takes a comm port identifier in the constructor.  it
gets the port in its run{} (or equiv) method in the new thread and can use
any MT techniques to communicate with the state of that device.

John

ExecutorService taskExecutor = Executors.*newFixedThreadPool*(ports.size());
>
> CompletionService<SerialPort> taskCompletionService = *new*ExecutorCompletionService<SerialPort>(taskExecutor);
>
>
>
> *for* (*final* CommPortIdentifier com : ports) {
>
>       Future<SerialPort> *validLinkFuture* = taskCompletionService
>
>                   .submit(*new* Callable<SerialPort>() {
>
>
>
>                         *public* SerialPort call() *throws* Exception {
>
>                         // (send special message to the port and expect a
> valid response
>
>                         getValidSerialPorts(com);
>
>                   }
>
>             });
>
> }
>
>
>
> Any comments?
>
>
>
> Wei Shen
>
>
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From jdp at syntelos.org  Fri Apr 16 21:45:07 2010
From: jdp at syntelos.org (John Pritchard)
Date: Fri, 16 Apr 2010 23:45:07 -0400
Subject: [Rxtx] windows install lib set
Message-ID: <p2gfe287e141004162045hf0c26530t80085b9275ee2c04@mail.gmail.com>

Hi,
I'm dev'ing on solaris for windows.. would be a nice heads-up for me to know
from here if the windows install will need any mingw dlls, gcc libc?

thanks,
john


-- 
http://www.google.com/profiles/john.douglas.pritchard
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From msemtd at googlemail.com  Mon Apr 19 02:23:47 2010
From: msemtd at googlemail.com (Michael Erskine)
Date: Mon, 19 Apr 2010 09:23:47 +0100
Subject: [Rxtx] =?utf-8?q?multithreading_problem_with_rxtx=E2=80=8F?=
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
Message-ID: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.


From Wei.Shen at Honeywell.com  Mon Apr 19 09:06:13 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:06:13 -0400
Subject: [Rxtx] =?windows-1255?q?multithreading_problem_with_rxtx=FE?=
In-Reply-To: <n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
References: <83B3B1411349194D9D05821CEF48E78CD7B3D5@DE08EV1001.global.ds.honeywell.com>
	<n2q785b52c51004190123h38fe3de1re59d8eb8239859cf@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C54@DE08EV1001.global.ds.honeywell.com>


Hi Michael,

The following are my code to search for the valid ports among all serial ports. 

	public ArrayList<SerialPort> getIXConnections() {
		Enumeration thePorts = CommPortIdentifier.getPortIdentifiers();
		ArrayList<CommPortIdentifier> ports = new ArrayList<CommPortIdentifier>();
		while (thePorts.hasMoreElements()) {
			CommPortIdentifier com = (CommPortIdentifier) thePorts
					.nextElement();
			if (com.getPortType() == CommPortIdentifier.PORT_SERIAL) {
				ports.add(com);
			}
		}
		ArrayList<SerialPort> links = new ArrayList<SerialPort>();

		ExecutorService taskExecutor = Executors.newFixedThreadPool(ports
				.size());
		CompletionService<SerialPort> taskCompletionService = new ExecutorCompletionService<SerialPort>(
				taskExecutor);

		for (final CommPortIdentifier com : ports) {

			taskCompletionService.submit(new Callable<SerialPort>() {

				public SerialPort call() throws Exception {
					SerialPort serialPort = null;
					try {
						serialPort = (SerialPort) com.open("Comm", 50);
						serialPort.setInputBufferSize(1200);
						IXCommunicationLogic ixCommunicationLogic = new IXCommunicationLogic(
								serialPort);
						ixCommunicationLogic.setTIMEOUT(200);
						byte[] dongleFirmwareVersion = ixCommunicationLogic
								.sendAndReceiveDongleMessage(--"Some special message and expects a valid response");
						return serialPort;
					} catch (Exception e) {
						log.error(e);
						if (serialPort != null) {
							serialPort.close();
						}
						return null;
					}

				}
			});

		}

		for (int i = 0; i < ports.size(); i++) {
			try {
				SerialPort validLink = taskCompletionService.take().get();
				if (validLink != null) {
					links.add(validLink);
				}
			} catch (Exception e) {
				log.error(e);
			}
		}
		return links;
	}



	public byte[]sendAndReceiveDongleMessage (byte[] payLoad) throws FMApplicationException {
		byte[] receivedMessage = null;
		for (int i = 0; i < MAX_RETRIES; i++) {
			try {
				sendMessage(destination, payLoad);
				receivedMessage = receiveMessage();
				return receivedMessage;
			} catch (Exception e) {
				e.printStackTrace();
				log.error(e);
			}

		}
		throw new ApplicationException();
	}



	public void sendMessage(byte[] payLoad)
			throws IOException {
		ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		buffer.write(START);
		buffer.write(version);
		// write the rest of the information to the buffer
		OutputStream outputStream = link.getOutputStream();
		buffer.writeTo(outputStream);
	}




	public byte[] receiveMessage() throws Exception {
		link.enableReceiveTimeout(TIMEOUT);
		InputStream inputStream = link.getInputStream();
		int read = inputStream.read();
		while (read != START && inputStream.available() > 0) {
			read = inputStream.read();
		}
		if (inputStream.available() == 0) {
			throw new Exception("time out");
		}
		// process the message and get the payload information
		return payLoad;
	}


The  getIXConnections() method is very unstable. It can easily crash the JVM. When it crashes, the error message is shown as the following. 


Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10002c2f, pid=2936, tid=3564
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_10-b03 mixed mode)
# Problematic frame:
# C  [rxtxSerial.dll+0x2c2f]
#
# An error report file with more information is saved as hs_err_pid2936.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp


Any comments? Thanks.

Wei Shen

-----Original Message-----
From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf Of Michael Erskine
Sent: April 19, 2010 2:24 AM
To: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx?

2010/4/16 Shen, Wei (AB21) <Wei.Shen at honeywell.com>:
> Hi experts,
> I am trying to communicate with multiple serial ports concurrently using
> multi-threading.? However, the JVM crashed a few times. I even got wrong
> results some time. I do not know what is wrong. The program worked fine
> without multi-threading (communicate with serial ports sequentially).Please
> help!

I'm sure we can help if you could post an example that reproduces the
problem -- the smallest example that you can make will be the easiest
for us to diagnose.

Regards,
Michael Erskine.
_______________________________________________
Rxtx mailing list
Rxtx at qbang.org
http://mailman.qbang.org/mailman/listinfo/rxtx


From Wei.Shen at Honeywell.com  Mon Apr 19 09:09:57 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 11:09:57 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com>
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From Wei.Shen at Honeywell.com  Mon Apr 19 10:19:10 2010
From: Wei.Shen at Honeywell.com (Shen, Wei (AB21))
Date: Mon, 19 Apr 2010 12:19:10 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl><v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com><i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com><y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com><83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com><s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com>
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
Message-ID: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>

Hi John,

 

Your suggestion works perfectly. It seems the usage of the thread pool
was causing the problem. Is it safe to say avoid using thread pool when
using RXTX? Thanks.

 

 

Wei Shen

 

________________________________

From: rxtx-bounces at qbang.org [mailto:rxtx-bounces at qbang.org] On Behalf
Of Shen, Wei (AB21)
Sent: April 19, 2010 9:10 AM
To: John Pritchard
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 

Thanks John. I will try your suggestion and let you know the results.

 

 

Wei Shen

 

________________________________

From: jdp at syntelos.com [mailto:jdp at syntelos.com] On Behalf Of John
Pritchard
Sent: April 16, 2010 9:43 PM
To: Shen, Wei (AB21)
Cc: rxtx at qbang.org
Subject: Re: [Rxtx] multithreading problem with rxtx

 


Hi Wei,

This is complicated.. should rather have a class that subclasses thread
or task or runnable and takes a comm port identifier in the constructor.
it gets the port in its run{} (or equiv) method in the new thread and
can use any MT techniques to communicate with the state of that device.

John

	ExecutorService taskExecutor =
Executors.newFixedThreadPool(ports.size());

	CompletionService<SerialPort> taskCompletionService = new
ExecutorCompletionService<SerialPort>(taskExecutor);

	 

	for (final CommPortIdentifier com : ports) {

	      Future<SerialPort> validLinkFuture = taskCompletionService

	                  .submit(new Callable<SerialPort>() {

	 

	                        public SerialPort call() throws
Exception {

	                        // (send special message to the port and
expect a valid response                                

	                        getValidSerialPorts(com);

	                  }

	            }); 

	}

	 

	Any comments?

	 

	Wei Shen

	 

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From george.dma at gmail.com  Mon Apr 19 10:29:15 2010
From: george.dma at gmail.com (George H)
Date: Mon, 19 Apr 2010 16:29:15 +0000
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
Message-ID: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>

On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
<Wei.Shen at honeywell.com> wrote:
> Hi John,
>
>
>
> Your suggestion works perfectly. It seems the usage of the thread pool was
> causing the problem. Is it safe to say avoid using thread pool when using
> RXTX? Thanks.
>

I would say yes, especially the way you are using the executor
service. It retrieves a thread from the pool, uses it and then returns
to you a result, once that result is returned the thread goes back
into the pool to get used by something else. I believe that's when the
VM fails. You should do as John suggests and manage separate threads
per serial port.


From jdp at syntelos.org  Mon Apr 19 19:07:51 2010
From: jdp at syntelos.org (John Pritchard)
Date: Mon, 19 Apr 2010 21:07:51 -0400
Subject: [Rxtx] multithreading problem with rxtx
In-Reply-To: <q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
References: <COL110-W103EA4C4E18E8CE208C4E4DC0E0@phx.gbl>
	<v2lde07811a1004152138xb0e46cckb1906981abb26391@mail.gmail.com>
	<i2v785b52c51004160622gcb8fe3acsa790f1f319a39b09@mail.gmail.com> 
	<y2kfe287e141004161245ra305f697tc065d821186b9680@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CD7B5D0@DE08EV1001.global.ds.honeywell.com>
	<s2mfe287e141004162042y60a0e0berfae4dccddeeb213e@mail.gmail.com> 
	<83B3B1411349194D9D05821CEF48E78CDC1C5C@DE08EV1001.global.ds.honeywell.com>
	<83B3B1411349194D9D05821CEF48E78CDC1D06@DE08EV1001.global.ds.honeywell.com>
	<q2pde07811a1004190929tc3357cafl8d0041026c8687a4@mail.gmail.com>
Message-ID: <z2ofe287e141004191807r40d083a0t42bba660fccc98e9@mail.gmail.com>

yes, the pool is changing the thread on the port which is causing problems.
there's a couple possibilities for what's causing the problem.  don't have
that stuff in head these days, but i don't think it's the jvm.


On Mon, Apr 19, 2010 at 12:29 PM, George H <george.dma at gmail.com> wrote:

> On Mon, Apr 19, 2010 at 4:19 PM, Shen, Wei (AB21)
> <Wei.Shen at honeywell.com> wrote:
> > Hi John,
> >
> >
> >
> > Your suggestion works perfectly. It seems the usage of the thread pool
> was
> > causing the problem. Is it safe to say avoid using thread pool when using
> > RXTX? Thanks.
> >
>
> I would say yes, especially the way you are using the executor
> service. It retrieves a thread from the pool, uses it and then returns
> to you a result, once that result is returned the thread goes back
> into the pool to get used by something else. I believe that's when the
> VM fails. You should do as John suggests and manage separate threads
> per serial port.
>
>
>
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From Patrick.Baumann at keymile.com  Thu Apr 22 06:19:26 2010
From: Patrick.Baumann at keymile.com (Baumann, Patrick)
Date: Thu, 22 Apr 2010 14:19:26 +0200
Subject: [Rxtx] Receive duplicate data
Message-ID: <D839955AA28B9A42A61B9181506E27C401DCD0C6@SRVCHBER1212.ch.keymile.net>

Hi

 

I have written a program using RXTX to communicate with a network device
through serial connection (USB-serial converter). For testing I use the
loopback function of the network device, which just sends back