public async Task <ScanResponseEventArgs> ExecuteAsync(ushort manufacturerId, CancellationToken cancellationToken, int timeout = DefaultTimeout)
{
Logger?.LogDebug($"Discover device by Manufacturer ID {manufacturerId}");
var taskCompletionSource = new TaskCompletionSource <ScanResponseEventArgs>();
using (var cancellationTokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken))
{
cancellationTokenSource.CancelAfter(timeout);
void OnScanResponse(object sender, ScanResponseEventArgs e)
{
var advertisementData = BleAdvertisingDataParser.Parse(e.data);
var manufacturerAdvertisementData = advertisementData.SingleOrDefault(x => x.Type == BleAdvertisingDataType.ManufacturerSpecificData);
if (manufacturerAdvertisementData?.GetManufacturerId() == manufacturerId)
{
taskCompletionSource.SetResult(e);
}
}
try
{
BgLib.BLEEventGAPScanResponse += OnScanResponse;
using (cancellationTokenSource.Token.Register(() => taskCompletionSource.SetCanceled(), false))
{
BgLib.SendCommand(BleModuleConnection.SerialPort, BgLib.BLECommandGAPSetScanParameters(0xC8, 0xC8, 1));
BgLib.SendCommand(BleModuleConnection.SerialPort, BgLib.BLECommandGAPDiscover(1));
return(await taskCompletionSource.Task.ConfigureAwait(false));
}
}
finally
{
BgLib.SendCommand(BleModuleConnection.SerialPort, BgLib.BLECommandGAPEndProcedure());
BgLib.BLEEventGAPScanResponse -= OnScanResponse;
}
}
}
public async Task <ScanResponseEventArgs> ExecuteAsync(byte[] serviceUuid, CancellationToken cancellationToken, int timeout = DefaultTimeout)
{
Logger?.LogDebug($"Discover device by service Uuid {serviceUuid.ToHexString()}");
var taskCompletionSource = new TaskCompletionSource <ScanResponseEventArgs>();
using (var cancellationTokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken))
{
cancellationTokenSource.CancelAfter(timeout);
void OnScanResponse(object sender, ScanResponseEventArgs e)
{
var advertisementData = BleAdvertisingDataParser.Parse(e.data);
if (advertisementData.Where(x => ServiceUuidAdvertisements.Contains(x.Type)).Any(x => x.Data.SequenceEqual(serviceUuid)))
{
taskCompletionSource.SetResult(e);
}
}
try
{
BgLib.BLEEventGAPScanResponse += OnScanResponse;
using (cancellationTokenSource.Token.Register(() => taskCompletionSource.SetCanceled(), false))
{
BgLib.SendCommand(BleModuleConnection.SerialPort, BgLib.BLECommandGAPSetScanParameters(0xC8, 0xC8, 1));
BgLib.SendCommand(BleModuleConnection.SerialPort, BgLib.BLECommandGAPDiscover(1));
return(await taskCompletionSource.Task.ConfigureAwait(false));
}
}
finally
{
BgLib.SendCommand(BleModuleConnection.SerialPort, BgLib.BLECommandGAPEndProcedure());
BgLib.BLEEventGAPScanResponse -= OnScanResponse;
}
}
}