[javax-usb-devel] gsm modem response is always 1'

[Alireza Bakhtiari]

hi everyone
I have a usb gsm modem (siemens MC35) and i wanna send an sms through this modem, but whatever command I send to the modem, the response is the same:1'
this is what i have done:

final UsbPipe usbPipein = usbEndpointin.getUsbPipe();
final UsbPipe usbPipeout = usbEndpointout.getUsbPipe();
//I had to define them as final to be able to work with them in the thread
after that i open the pipes, then:


Thread runner1 = new Thread () {
            public void run () {
                UsbIrp irp = usbPipeout.createUsbIrp();
                irp.setData("ATI".getBytes());

               try{
                   usbPipeout.syncSubmit(irp);
                   Thread.sleep(1000);

               if (1 > irp.getActualLength()){
                     System.out.print("failed");
                   throw new Exception("packet sending failed");
               }
               }catch(Exception e){};
            }};< br>           
        Thread runner2 = new Thread () {
            public void run () {
                byte[] resData = new byte[64];
                try{
                     Thread.sleep(1000);
                      UsbIrp inIrp = usbPipein.createUsbIrp();
                     inIrp.setData(resData);
                     int bytesRead = 0;
                     do{
                       usbPipein.syncSubmit(inIrp);
                       bytesRead = inIrp.getActualLength();
                       totalBytes += bytesRead;
                     } while (!inIrp.isComplete());
                        System.out.println("response: "+new String(resData,0,totalBytes));
                }catch(Exception e){}
            }};
          runner2.start ();
          runner1.start ();

if i set the sleep time of thread 2 to be 2000 or more, it will catch an exception
Im dont know much of usb programming, please help me correct the code.
Yours,
Alireza

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