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package usbcomm1;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.nio.ByteBuffer;

import java.nio.ByteOrder;

import java.nio.CharBuffer;

import java.nio.charset.Charset;

import java.util.List;

import javax.usb.UsbConfiguration;

import javax.usb.UsbConst;

import javax.usb.UsbControlIrp;

import javax.usb.UsbDevice;

import javax.usb.UsbDeviceDescriptor;

import javax.usb.UsbEndpoint;

import javax.usb.UsbException;

import javax.usb.UsbHostManager;

import javax.usb.UsbHub;

import javax.usb.UsbInterface;

import javax.usb.UsbPipe;

/**

*

* @author Srinath Ramesh

*/

public class Usbcommtest {

private static final short VENDOR_ID = 0x1cbe;

private static final short PRODUCT_ID = 0x0003;

/**

* @param args

* @throws UsbException

* @throws SecurityException

*/

public static void main(String[] args) throws SecurityException, UsbException {

// TODO Auto-generated method stub

final short vendor = 0x1cbe;

final short product = 0x0003;

UsbDevice myDevice = findDevice(UsbHostManager.getUsbServices().getRootUsbHub(),vendor, product);

System.out.println(myDevice);

UsbControlIrp irp = myDevice.createUsbControlIrp(

(byte) (UsbConst.REQUESTTYPE_DIRECTION_IN

| UsbConst.REQUESTTYPE_TYPE_STANDARD

| UsbConst.REQUESTTYPE_RECIPIENT_DEVICE),

UsbConst.REQUEST_GET_CONFIGURATION,

(short) 0,

(short) 0

);

irp.setData(new byte[1]);

myDevice.syncSubmit(irp);

System.out.println(irp.getData()[0]);

UsbConfiguration configuration = myDevice.getActiveUsbConfiguration();

System.out.println(configuration);

UsbInterface iface = configuration.getUsbInterface((byte) 0);

System.out.println(iface);

iface.claim();

try

{

UsbEndpoint endpoint = iface.getUsbEndpoint((byte) 1);

UsbPipe pipe = endpoint.getUsbPipe();

pipe.open();

BufferedReader inp = new BufferedReader (new InputStreamReader(System.in));

System.out.println("Enter the input string");

try

{

String T= inp.readLine();

char[] c=T.toCharArray();

byte[] bytes = Charset.forName("UTF-8").encode(CharBuffer.wrap(c)).array();

int sent = pipe.syncSubmit(bytes );//{ 'a','b'}

System.out.println(sent + " bytes sent");

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

finally

{

pipe.close();

}

endpoint = iface.getUsbEndpoint((byte) 0x81);

pipe = endpoint.getUsbPipe();

pipe.open();

try {

byte[] data = new byte[256];

int received = pipe.syncSubmit(data);

double val;

val = ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN ).getDouble();

for(int iu=0;iu<data.length;iu++){

//System.out.print(received + " bytes received"+" "+(char)data[0]+(char)data[1]);

if(iu==0){

System.out.println(received + " bytes received"+" ");

}System.out.print((char)data[iu]);

}

System.out.println();

} finally {

pipe.close();

}

}

finally

{

iface.release();

}

}

public static UsbDevice findDevice(UsbHub hub, short vendorId, short productId)

{

for (UsbDevice device : (List<UsbDevice>) hub.getAttachedUsbDevices())

{

UsbDeviceDescriptor desc = device.getUsbDeviceDescriptor();

if (desc.idVendor() == vendorId && desc.idProduct() == productId) return device;

if (device.isUsbHub())

{

device = findDevice((UsbHub) device, vendorId, productId);

if (device != null) return device;

}

}

return null;

}

}