private async void Watcher_Received(object sender, AdvertisementReceivedEventArgs e)
{
try {
// make sure this is the right kind of hub
if (!e.Advertisement.ManufacturerData[0x0397].Span.SequenceEqual(manfuacturerData.Span))
{
return;
}
// ignore duplicate adverts
if (ads.ContainsKey(e.Address))
{
ads[e.Address] = e;
return;
}
var device = await Device.FromAddressAsync(e.Address);
var connection = await BLEConnection.FromDeviceAsync(device);
var hub = new Hub(connection);
HubConnected?.Invoke(this, hub);
}
catch (Exception ex) {
logger?.LogDebug(ex, "Unhandled exception in HubWatcher.Watcher_Received");
}
}
/// <summary>
/// Creates a new instance of <see cref="BLEConnection"/> from a <see cref="Device"/>.
/// </summary>
/// <param name="device">The Bluetooth LE device.</param>
/// <returns>The new connection.</returns>
public static async Task <BLEConnection> FromDeviceAsync(Device device)
{
if (device == null)
{
throw new ArgumentNullException(nameof(device));
}
var services = await device.GetGattServicesAsync(ServiceUuid);
var service = services.Single();
var characteristics = await service.GetCharacteristicsAsync(CharacteristicUuid);
var characteristic = characteristics.Single();
var connection = new BLEConnection(device, characteristic);
await characteristic.StartNotifyAsync();
return(connection);
}
/// <summary>
/// Creates a new instance of a Powered Up hub device.
/// </summary>
/// <param name="connection">The Bluetooth LE connection.</param>
public Hub(BLEConnection connection)
{
this.connection = connection ?? throw new ArgumentNullException(nameof(connection));
}
