Listen for connections of USB/Hid (Human Interface Device) devices and communicate with the devices on Android, Windows, and UWP with dependency injection.
https://github.com/MelbourneDeveloper/Device.Net
Here is sample code that works across all platforms:
internal class TrezorExample : IDisposable
{
#region Fields
//Define the types of devices to search for. This particular device can be connected to via USB, or Hid
private readonly List<FilterDeviceDefinition> _DeviceDefinitions = new List<FilterDeviceDefinition>
{
new FilterDeviceDefinition{ DeviceType= DeviceType.Hid, VendorId= 0x534C, ProductId=0x0001, Label="Trezor One Firmware 1.6.x", UsagePage=65280 },
new FilterDeviceDefinition{ DeviceType= DeviceType.Usb, VendorId= 0x534C, ProductId=0x0001, Label="Trezor One Firmware 1.6.x (Android Only)" },
new FilterDeviceDefinition{ DeviceType= DeviceType.Usb, VendorId= 0x1209, ProductId=0x53C1, Label="Trezor One Firmware 1.7.x" },
new FilterDeviceDefinition{ DeviceType= DeviceType.Usb, VendorId= 0x1209, ProductId=0x53C0, Label="Model T" }
};
#endregion
#region Events
public event EventHandler TrezorInitialized;
public event EventHandler TrezorDisconnected;
#endregion
#region Public Properties
public IDevice TrezorDevice { get; private set; }
public DeviceListener DeviceListener { get; private set; }
#endregion
#region Event Handlers
private void DevicePoller_DeviceInitialized(object sender, DeviceEventArgs e)
{
TrezorDevice = e.Device;
TrezorInitialized?.Invoke(this, new EventArgs());
}
private void DevicePoller_DeviceDisconnected(object sender, DeviceEventArgs e)
{
TrezorDevice = null;
TrezorDisconnected?.Invoke(this, new EventArgs());
}
#endregion
#region Public Methods
public void StartListening()
{
TrezorDevice?.Dispose();
DeviceListener = new DeviceListener(_DeviceDefinitions, 3000);
DeviceListener.DeviceDisconnected += DevicePoller_DeviceDisconnected;
DeviceListener.DeviceInitialized += DevicePoller_DeviceInitialized;
}
public async Task InitializeTrezorAsync()
{
//Get the first available device and connect to it
var devices = await DeviceManager.Current.GetDevices(_DeviceDefinitions);
TrezorDevice = devices.FirstOrDefault();
await TrezorDevice.InitializeAsync();
}
public async Task<byte[]> WriteAndReadFromDeviceAsync()
{
//Create a buffer with 3 bytes (initialize)
var writeBuffer = new byte[64];
writeBuffer[0] = 0x3f;
writeBuffer[1] = 0x23;
writeBuffer[2] = 0x23;
//Write the data to the device
return await TrezorDevice.WriteAndReadAsync(writeBuffer);
}
public void Dispose()
{
TrezorDevice?.Dispose();
}
#endregion
}
Linux, and MacOS support is on its way.