override protected async Task <GpioState> readPinAsync(int pinId)
{
GpioState result = null;
GpioPin pin = controller.GetGpioPinByBcmPinNumber(pinId);
if (pin != null)
{
result = new GpioState(pinId, 0, DateTime.Now, true);
result.Value = await pin.ReadLevelAsync();
}
return(result);
}