Sun Comm Api 2.0 for Windows XP

Posted on 2007-11-28
Last Modified: 2013-11-24
I am developing software in Java within the Motorola MOTODEV Studio for Java(TM) ME v7.3 IDE.  I have found out that the communication API from Sun for serial communication within XP only works with the older jar file.  I have the three files:


and I placed them in the following directories according to this reference

comm.jar should be placed in:

win32com.dll should be placed in:
%windir%System32 should be placed in:

I  went into the environmental variables within windows XP and created a system variable called JAVA_HOME and gave it the path
C:\Program Files\Java\jdk1.6.0_02

When i go within my ide and try to run a class file which i created provided by jamod (Java Modbus
i get the following error.

Error loading SolarisSerial: java.lang.UnsatisfiedLinkError: no SolarisSerialParallel in java.library.path
Caught java.lang.UnsatisfiedLinkError: com.sun.comm.SolarisDriver.readRegistrySerial(Ljava/util/Vector;Ljava/lang/String;)I while loading driver com.sun.comm.SolarisDriver
      at SerialAITest.main(

In the project within the IDE i configured the build path and pointed to the comm.jar file in the JAVA_HOME directory.

Within the IDE when i go to the configuration details i see under the system properties category the listing:
*** System properties:
MOT_SDK_HOME=c:\Program Files\Motorola\MOTODEV Studio for Java(TM) ME v7.3\JMESDK

Does this mean that my java home location is not JAVA_HOME but rather MOT_SDK_HOME??
Can anyone help??????

I attached the file which uses the jamod.jar and the comm.jar files.  The program craps out at the 4th step where it trys to open a serial connection.  I am pretty certain that the issue is something with the Sun Comm API
import net.wimpi.modbus.ModbusCoupler;
import net.wimpi.modbus.msg.ReadInputRegistersRequest;
import net.wimpi.modbus.msg.ReadInputRegistersResponse;
import net.wimpi.modbus.util.SerialParameters;
public class SerialAITest {
  public static void main(String[] args) {
	//if (args.length < 4) {
	//	System.out.println("not enough args");
	//	System.exit(1);
    try {
     /* The important instances of the classes mentioned before */
     SerialConnection con = null; //the connection
     ModbusSerialTransaction trans = null; //the transaction
     ReadInputRegistersRequest req = null; //the request
     ReadInputRegistersResponse res = null; //the response
     /* Variables for storing the parameters */
     String portname= "COM1"; //the name of the serial port to be used
     int unitid = 1; //the unit identifier we will be talking to
     int ref = 1259; //the reference, where to start reading from
     int count = 1; //the count of IR's to read
     int repeat = 1; //a loop for repeating the transaction	 
     boolean isopen = false;
//   2. Set master identifier
     //ModbusCoupler.getReference().setMaster(master); I added this in
    // ModbusCoupler.getReference().setUnitID(1);	
//     3. Setup serial parameters
     SerialParameters params = new SerialParameters();
     System.setProperty("net.wimpi.modbus.debug", "true");
//   4. Open the connection
     con = new SerialConnection(params);
     System.out.println("Connection..." + con.toString());;
     isopen = con.isOpen();
     System.out.println("Serial port status..." + isopen);
//   5. Prepare a request
     req = new ReadInputRegistersRequest(ref, count);
//   6. Prepare a transaction
     trans = new ModbusSerialTransaction(con);
//	 7. Execute the transaction repeat times
     int k = 0;
     do {
       res = (ReadInputRegistersResponse) trans.getResponse();
       for (int n = 0; n < res.getWordCount(); n++) {
         System.out.println("Word " + n + "=" + res.getRegisterValue(n));
     } while (k < repeat);
//   8. Close the connection
    } catch (Exception ex) {
}//class SerialAITest

Open in new window

Question by:teamcosmo02
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 7
  • 6
LVL 92

Expert Comment

ID: 20370450
jamod appears to trying to load the solaris driver
LVL 92

Expert Comment

ID: 20370470
whats the properties file contain?

Author Comment

ID: 20370487
Here is the contents of the properties file:

# (Solaris)
# This properties file is necessary in order for javax.comm to run,
# and its contents are critical, and not to be tampered with without
# a very clear understanding of the impact.  It is shipped with a 
# default set of values that work on the target platform.
# 1. The directory javax.comm is launched from
# 2. Each directory in the classpath (including the one in which comm.jar is in)
# 3. <jvm dir>/lib
# 4. <jvm dir>/jre/lib
# The following properties must be defined:
#   driver
#   serpath0 ... serpath<n>
#   parpath0 ... parpath<n>
# Driver:
#   The driver property specifies the fully qualified class name of the
#   platform specific implementation of the javax.comm.CommDriver class.
#   Format:
#     driver=<fully qualified classname>
#   Example:
#     driver=com.sun.comm.SolarisDriver
# Port paths:
#   Port paths must be specified to indicate to the implementation
#   which are the core set of ports to make available. These can
#   be either paths to directories containing ports or paths to
#   specific serial or parallel ports.
# Implementation specific driver
# Paths to server-side serial port devices
serpath0 = /dev/term
serpath1 = /dev/cua
# Paths to server-side parallel port devices
parpath0 = /dev/ecpp0
parpath1 = /dev/printers

Open in new window

Simplifying Server Workload Migrations

This use case outlines the migration challenges that organizations face and how the Acronis AnyData Engine supports physical-to-physical (P2P), physical-to-virtual (P2V), virtual to physical (V2P), and cross-virtual (V2V) migration scenarios to address these challenges.

LVL 92

Expert Comment

ID: 20370490
thats the solaris version, you should be using the windows one

Author Comment

ID: 20370755
can i edit the existing file or is there some place i can dowload the windows version?  i'm having trouble finding one
LVL 92

Accepted Solution

objects earned 500 total points
ID: 20370849
driver should be:


change the ports to whats on your box

Author Closing Comment

ID: 31411568
Fantastic service!!

Author Comment

ID: 20371473
i am still having a problem.  I am now getting the error message
      at SerialAITest.main(

It is occurring at the same line where it uses the open method.  Any ideas?  I edited the file to the windows driver.
LVL 92

Expert Comment

ID: 20371497
did u update the ports?

Author Comment

ID: 20393393
what do you mean by updating the ports?
LVL 92

Expert Comment

ID: 20393407
the port config in the properties file

Author Comment

ID: 20393642
do you know what the serpath0 and serpath1 values should be for windows xp sp2 x86 ?
LVL 92

Expert Comment

ID: 20393722
don't sorry

Featured Post

[Webinar] Code, Load, and Grow

Managing multiple websites, servers, applications, and security on a daily basis? Join us for a webinar on May 25th to learn how to simplify administration and management of virtual hosts for IT admins, create a secure environment, and deploy code more effectively and frequently.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Run Access2013-32bit under WinXP? 4 130
Where to place postgres JDBC driver jar on tomcat 8 70
How to fix  socket closed error 11 64
Is there a Google Voice API? 9 70
Introduction This article is the first of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article explains our test automation goals. Then rationale is given for the tools we use to a…
Today, still in the boom of Apple, PC's and products, nearly 50% of the computer users use Windows as graphical operating systems. If you are among those users who love windows, but are grappling to keep the system's hard drive optimized, then you s…
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
Viewers will learn one way to get user input in Java. Introduce the Scanner object: Declare the variable that stores the user input: An example prompting the user for input: Methods you need to invoke in order to properly get  user input:

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question