[ts-7000] Re: java recommendations

["tedapt" <>]

Can anyone clarify Dave's statement about the use of rxtx:

   > note: you have to add the arm's /dev/ttyAMx to rxtx, it doesn't
know about them

Also, any notes from anyone who has successfully setup and used rxtx
with jamvm would be appreciated!

The setup I'm attempting to get working is:

   - TS-7250
   - debian on a USB thumbdrive
   - jamvm installed via apt-get
   - downloaded rxtx rxtx-2.0-7pre1 for Linux from:
      http://users.frii.com/jarvi/rxtx/download.html (file at
ftp://ftp.qbang.org/pub/rxtx/rxtx-2.0-7pre1-i686-pc-linux-gnu.tar.gz)
   - extracted librxtxSerial.so and placed it in /usr/lib/jamvm
   - using Sun's comm.jar (from a Java 1.3 distribution)
 
When I invoke the test class (source below) I get these results:

   root# /usr/bin/jamvm -cp .:comm.jar SerialTest /dev/ttyAM0 9600
   Specified serial port (/dev/ttyAM0) does not exist
   null
   javax.comm.NoSuchPortException
      at
javax.comm.CommPortIdentifier.getPortIdentifier(CommPortIdentifier.java:105)
   at SerialTest.main(SerialTest.java:32)

Here's source for SerialTest.java:

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;

import javax.comm.CommPortIdentifier;
import javax.comm.NoSuchPortException;
import javax.comm.PortInUseException;
import javax.comm.SerialPort;
import javax.comm.UnsupportedCommOperationException;

public class SerialTest {
        
        private static SerialPort sp;
        private static InputStream sin;
        private static OutputStream sout;

   public static void main(String[] args) {
                try {
                        if (args.length != 2) {
                                System.out.println("Usage: java SerialTerm.tini 
port_name data_rate");
                                System.out.println("Available ports are:\n");
                                Enumeration ports = 
CommPortIdentifier.getPortIdentifiers();
                                while(ports.hasMoreElements()){
                                        System.out.println(ports.nextElement() 
+ "\n");
                                }
                                System.exit(1);
                        }
         String portName = args[0];
         int baudRate = Integer.parseInt(args[1]);
         try {
            sp =
(SerialPort)CommPortIdentifier.getPortIdentifier(portName).open("SerialTerm",
5000);
            sp.setSerialPortParams(baudRate, SerialPort.DATABITS_8,
                                   SerialPort.STOPBITS_1,
                                   SerialPort.PARITY_NONE);
            sin = sp.getInputStream();
            sout = sp.getOutputStream();
         } catch (NoSuchPortException nsp) {
            System.out.println("Specified serial port ("+portName+
                               ") does not exist");
            throw nsp;
         } catch (PortInUseException piu) {
            System.out.println("Serial port "+portName+
                               " in use by another application");
            throw piu;
         } catch (UnsupportedCommOperationException usc) {
            System.out.println("Unable to configure port:"+portName);
            throw usc;
         } catch (IOException ioe) {
            System.out.println(
                               "Unable to acquire I/O streams for port
" + portName);
            throw ioe;
         }
                } catch (Exception e) {
                        System.out.println(e.getMessage());
                        e.printStackTrace();
                }
        }
        
}

--- In  Dave Cramer <> wrote:
>
> I've been running jamvm on mine for quite a while. You don't need  
> jikes, unless you plan to compile on the arm (Very slow)
> I pulled alot of the gnuclasspath out, and the whole thing is quite  
> small. Around 4M or so
> 
> you need rxtx for serial port work with java,, other than that it's  
> write once deploy everywhere
> 
> note: you have to add the arm's /dev/ttyAMx to rxtx, it doesn't know  
> about them
> 
> Dave
> On 7-Nov-06, at 8:57 PM, gunghoiguana wrote:
> 
> > The install was much easier than I anticipated:
> >
> > apt-get install jikes
> > apt-get install jamvm
> > apt-get install jikes-classpath
> >
> > Everything seems to work fine, and I can run class files that I
> > compiled on my desktop PC. I've only checked out basic functions and
> > console IO so far, but I'll be checking out the serial port and
> > network interfaces soon. Java is *supposed* to make those things  
> > easy...
> >
> > Brian
> >
> >
> >
>




 
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