I am working on the same thing, didnt want to respond till I an answer
You can download the most current version of the arm-unknown-linux-gnu
binary at rxtx site:
ftp://ftp.qbang.org/pub/rxtx/ToyBox/2.1-7-build1/Linux/glibc-2.3.5/arm-unknown-linux-gnu/
The easyest way to add the ttyAMx com ports is to set the system properties:
jamvm -Dgnu.io.rxtx.SerialPorts=/dev/ttyAM0:/dev/ttyAM1 foo
The other way:
RXTXCommDriver.java is
available in ftp://ftp.qbang.org/pub/rxtx/rxtx-2.0-7pre2/src/ Download the
RXTXCommDriver.java. In this code, you will find
if (osName.equals ("Linux")) { String[]Temp = { "ttyS", // linux Serial
Ports "ttySA" // for the IPAQs }; CandidatePortPrefixes = Temp;
Replace this code with
if (osName.equals ("Linux")) { String[]Temp = { "ttyS", "ttyAM", // linux
Serial Ports "ttySA" // for the IPAQs }; CandidatePortPrefixes = Temp; }
Compile the RXTXCommDriver.java and add the resulting RXTXCommDriver.class
file to RXTXcomm.jar in /usr/java/jdk1.5.0_07/jre/lib/ext/RXTXcomm.jar
Hope this help,
Justin
Quoting 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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