public static async Task <SensorData> PollDevice(string deviceId, int retries = 3)
{
BluetoothLEDevice device = null;
var sensorData = new SensorData {
DeviceId = deviceId
};
try
{
device = await BluetoothLEDevice.FromIdAsync(deviceId);
if (device == null)
{
sensorData.Error = SensorData.ErrorType.CannotConnect;
}
}
catch (Exception ex) when(ex.HResult == E_DEVICE_NOT_AVAILABLE)
{
sensorData.Error = SensorData.ErrorType.BluetoothOff;
}
if (device != null)
{
sensorData.Error = SensorData.ErrorType.CommError;
var data = await device.GetGattServicesAsync(BluetoothCacheMode.Uncached);
if (data.Status == GattCommunicationStatus.Success)
{
var query = new QueryParams(data.Services, DataService, sensorData);
var success =
await Read(new QueryParams(data.Services, GenericAccess, sensorData).Read(DeviceName)) &&
await Read(query.Read(Firmware)) &&
await Write(query.Write(ModeSet, SerialNumberMode)) &&
await Read(query.Read(SerialNumber)) &&
await Write(query.Write(ModeSet, RealtimeModeOn)) &&
await Read(query.Read(Sensors)) &&
await Write(query.Write(ModeSet, RealtimeModeOff));
sensorData.Error = SensorData.ErrorType.None;
}
}
device?.Dispose();
if ((sensorData.Error == SensorData.ErrorType.CommError || sensorData.IsBad) && retries-- > 0)
{
await Task.Delay(500);
sensorData = await PollDevice(sensorData.DeviceId, retries);
}
return(sensorData);
}