/**
* Find the specified device.
*
* <p>This method will look at child devices of hubs in effort to find the specified device.
*
* @param vendor the vendor ID of the requested device
* @param product the product ID of the requested device
* @param currDevice the current device being examined
* @return the requested device or {@code null} if not found
*/
private UsbDevice findDevice(int vendor, int product, UsbDevice currDevice) {
if (currDevice.isUsbHub()) {
UsbHub hub = (UsbHub) currDevice;
@SuppressWarnings("unchecked")
List<UsbDevice> attachedUsbDevices = (List<UsbDevice>) hub.getAttachedUsbDevices();
for (UsbDevice child : attachedUsbDevices) {
UsbDevice possible = findDevice(vendor, product, child);
if (possible != null) {
return possible;
}
}
} else {
UsbDeviceDescriptor desc = currDevice.getUsbDeviceDescriptor();
if ((desc.idVendor() & 0xffff) == vendor && (desc.idProduct() & 0xffff) == product) {
return currDevice;
}
}
// Nothing matched at this level
return null;
}
public static UsbDevice findDevice(UsbHub usbHub) {
for (UsbDevice device : usbHub.getAttachedUsbDevices()) {
if (device.isUsbHub()) {
device = findDevice((UsbHub) device);
if (device != null) {
return device;
}
} else {
UsbDeviceDescriptor deviceDescriptor = device.getUsbDeviceDescriptor();
if (deviceDescriptor.idVendor() == 0x0403 && deviceDescriptor.idProduct() == 0x6001) {
return device;
}
}
}
return null;
}
