[javax-usb-devel] Please Help about the USB and Report_ID

[Hsieh Dinow]

1. I want to get the data by the certain one USB Report ID via Java in Linux
Environment.
2. Everything is okay in Windows with the API: HidD_getfeature(Device,
buffer[], int length);
3. But the result is incorrect in Java.
4. i am in a dilemna and have no ideal how to progress?
5. Please give me any advises, correct, or suggestion to my below code.
6. Or i was totally in the wrong direction?

UsbPipe pipe = endpoint.getUsbPipe();
byte bmRequestType =
?                                                              //I have no
idea to set up this byte.
byte bRequest = UsbConst.REQUEST_SET_FEATURE;                 //3
short wValue =
29;
   //Report_ID
short wIndex = 0;
UsbControlIrp irp = pipe.createUsbControlIrp(bmRequestType, bRequest,
wValue, wIndex);
byte data[] = new byte[3];
irp.setData(data);
pipe.open();
try{
 while(true){
  pipe.syncSubmit(irp);
  byte data1[] = irp.getData();
  for(int i=0 ; i<data1.length ; i++){
   System.out.print(data1[i] + " ");
  }
  irp.setComplete(false);
 }
}
catch(Exception e){
 System.err.println("Exception : Class ReceivePacketAPP : run() : e : " +
e);
}

7. Below is the scripts I code but it always repond the strange result
==> 14, 100, -1
==> 20, 1, -1
==> 21, 1, 1

8. Thanks your reading

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