Hi maybe anyone can read he garmin sdk :
http://www8.garmin.com/support/pdf/IOSDK.zip
I don't know what I do wrong but I only get zeros :(
Here is my Code:
public void IODevices(UsbDevice device){
try{
device.getActiveUsbConfiguration();
UsbConfiguration config = device.getActiveUsbConfiguration();
UsbInterface interf = config.getUsbInterface((byte)0);
interf.claim(new UsbInterfacePolicy() {
public boolean forceClaim(UsbInterface usbInterface) {
return true;
}
});
List totalEndpoints = interf.getUsbEndpoints();
UsbEndpoint ep = null;
//Endpoints
UsbEndpoint pipeInEndP = (UsbEndpoint) totalEndpoints.get(0);
UsbEndpoint pipeOutEndP = (UsbEndpoint) totalEndpoints.get(2);
//Pipes
UsbPipe pipeIn = pipeInEndP.getUsbPipe();
pipeIn.open();
UsbPipe pipeOut = pipeOutEndP.getUsbPipe();
pipeOut.open();
short mReserved2 = 0;
short mPacketId = 254;
int mDataSize = 0;
byte[] bytesToSend = new byte[12];
bytesToSend[0] = 20;
bytesToSend[1] = 0;
bytesToSend[2] = (byte) (mReserved2 & 0xFF); //Short to Byte
bytesToSend[3] = (byte) ((mReserved2 & 0xff00 ) >> 8); //Short
to Byte
bytesToSend[4] = (byte) (mPacketId & 0xFF); //Short to Byte
bytesToSend[5] = (byte) ((mPacketId & 0xff00 ) >> 8); //Short
to Byte
bytesToSend[6] = (byte) (mReserved2 & 0xFF); //Short to Byte
bytesToSend[7] = (byte) ((mReserved2 & 0xff00 ) >> 8); //Short
to Byte
bytesToSend[8] = (byte) (mDataSize >>24); //unsigned long to
Byte
BytesToSend[9] = (byte) ((mDataSize << 8) >> 24);
BytesToSend[10] = (byte) ((mDataSize << 16) >> 24);
bytesToSend[11] = (byte) ((mDataSize << 24) >> 24);
UsbIrp irpSend = pipeOut.createUsbIrp();
IrpSend.setData(bytesToSend);
pipeOut.asyncSubmit(irpSend);
irpSend.waitUntilComplete(1000);
byte[] bytesToRead = new byte[255];
UsbIrp irpRead = pipeIn.createUsbIrp();
irpRead.setData(bytesToRead);
pipeIn.asyncSubmit(irpRead);
irpRead.waitUntilComplete(1000);
pipeIn.abortAllSubmissions();
pipeOut.abortAllSubmissions();
pipeIn.close();
pipeOut.close();
interf.release();
int pid,sv;
pid =(bytesToRead[0] & 0xff);
sv =(bytesToRead[1] & 0xff);
pid= bytes_to_int(bytesToRead);
sv= bytes_to_int(bytesToRead, 4);
System.out.println("pid: " + pid + "; sv: " + sv);
System.out.println(bytesToRead);
}catch(Exception ex){
ex.printStackTrace();
}
}
int bytes_to_int(byte b[], int start) {
int i = ((b[start + 3] & 0xff) << 24) + ((b[start + 2] & 0xff) << 16) +
((b[start + 1] & 0xff) << 8) + (b[start] & 0xff);
return i;
}
int bytes_to_int(byte b[]) {
/* as above, but start == 0 */
return bytes_to_int(b, 0);
}
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