private void AddInternalDevice(IDevice device, XamarinBluetoothDeviceInfo info)
{
if (!_discoveredDevices.ContainsKey(info.DeviceIdentifier))
{
_discoveredDevices.Add(info.DeviceIdentifier, device);
}
else
{
_discoveredDevices[info.DeviceIdentifier] = device;
}
}
public void Discover(Func <IPoweredUpBluetoothDeviceInfo, Task> discoveryHandler, CancellationToken cancellationToken = default)
{
_bluetoothAdapter.ScanMode = ScanMode.Balanced;
_bluetoothAdapter.DeviceDiscovered += ReceivedHandler;
cancellationToken.Register(async() =>
{
await _bluetoothAdapter.StopScanningForDevicesAsync().ConfigureAwait(false);
_bluetoothAdapter.DeviceDiscovered -= ReceivedHandler;
});
_bluetoothAdapter.StartScanningForDevicesAsync(new Guid[] { new Guid(PoweredUpBluetoothConstants.LegoHubService) }, DeviceFilter, false).ConfigureAwait(false);
async void ReceivedHandler(object sender, DeviceEventArgs args)
{
var info = new XamarinBluetoothDeviceInfo();
var advertisementRecord = args.Device.AdvertisementRecords.FirstOrDefault(x => x.Type == AdvertisementRecordType.ManufacturerSpecificData);
if (advertisementRecord?.Data?.Length > 0)
{
var data = advertisementRecord.Data.ToList();
data.RemoveRange(0, 2);
info.ManufacturerData = data.ToArray();
var nativeDeviceInfo = _deviceInfoProvider.GetNativeDeviceInfo(args.Device.NativeDevice);
info.Name = args.Device.Name;
info.DeviceIdentifier = nativeDeviceInfo.DeviceIdentifier;
AddInternalDevice(args.Device, info);
await discoveryHandler(info).ConfigureAwait(false);
}
}
}
