Exception while reading data

[vishal]

hi,

Am getting following exception while reading data from USB: -

ch.ntb.usb.USBTimeoutException: LibusbJava.usb_bulk_read: usb_reap: timeout error

Can anybody explain what the problem is?

Here is the code:-

Device dev = USB.getDevice((short) 0x1559, (short) 0x0002);
      try {
          dev.open(1, 0, -1);
          byte[] readData = new byte[16];
            
          int ir = dev.readBulk(0x81, readData, readData.length, 2000, false);
          logData(readData);
          
      }catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            try {
                dev.close();
            } catch (USBException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }