// Apologies for the repeated code, however i feel it provides a better demonstration
// of the functionality of this code.
public void useSynchronousOperation()
{
//Get the details of all connected USB HID devices
HIDDevice.interfaceDetails[] devices = HIDDevice.getConnectedDevices();
//Arbitrarily select one of the devices which we found in the previous step
//record the details of this device to be used in the class constructor
int selectedDeviceIndex = 0;
ushort VID = devices[selectedDeviceIndex].VID;
ushort PID = devices[selectedDeviceIndex].PID;
int SN = devices[selectedDeviceIndex].serialNumber;
string devicePath = devices[selectedDeviceIndex].devicePath;
//create a handle to the device by calling the constructor of the HID class
//This can be done using either the VID/PID/Serialnumber, or the device path (string)
//all of these details are available from the HIDDevice.interfaceDetails[] struct array created above
//The "false" boolean in the constructor tells the class we only want synchronous operation
HIDDevice device = new HIDDevice(devicePath, false);
//OR, the normal usage when you know the VID and PID of the device
//HIDDevice device = new HIDDevice(VID, PID, (ushort)SN, false);
//Write some data to the device (the write method throws an exception if the data is longer than the report length
//specified by the device, this length can be found in the HIDDevice.interfaceDetails struct)
byte[] writeData = { 0x00, 0x01, 0x02, 0x03, 0x04 };
device.write(writeData); //Its that easy!!
//Read some data synchronously from the device. This method blocks the calling thread until the data
//is returned. This takes 1-20ms for most HID devices
byte[] readData = device.read(); //again, that easy!
//close the device to release all handles etc
device.close();
}
public void startAsyncOperation()
{
//Get the details of all connected USB HID devices
HIDDevice.interfaceDetails[] devices = HIDDevice.getConnectedDevices();
//Arbitrarily select one of the devices which we found in the previous step
//record the details of this device to be used in the class constructor
int selectedDeviceIndex = 0;
ushort VID = devices[selectedDeviceIndex].VID;
ushort PID = devices[selectedDeviceIndex].PID;
int SN = devices[selectedDeviceIndex].serialNumber;
string devicePath = devices[selectedDeviceIndex].devicePath;
//create a handle to the device by calling the constructor of the HID class
//This can be done using either the VID/PID/Serialnumber, or the device path (string)
//all of these details are available from the HIDDevice.interfaceDetails[] struct array created above
//The "true" boolean in the constructor tells the class we want asynchronous operation this time
HIDDevice device = new HIDDevice(devicePath, true);
//OR, the normal usage when you know the VID and PID of the device
//HIDDevice device = new HIDDevice(VID, PID, (ushort)SN, true);
//next create the event handler for the incoming reports
device.dataReceived += new HIDDevice.dataReceivedEvent(device_dataReceived);
//Write some data to the device (the write method throws an exception if the data is longer than the report length
//specified by the device, this length can be found in the HIDDevice.interfaceDetails struct)
//The write method is identical to the synchronous mode of operation
byte[] writeData = { 0x00, 0x01, 0x02, 0x03, 0x04 };
device.write(writeData); //Its that easy!!
//Send your program off to do other stuff here, wait for UI events etc
//When a report occurs, the device_dataReceived(byte[] message) method will be called
System.Threading.Thread.Sleep(100);
//close the device to release all handles etc
device.close();
}
