private double PulseIn(int pin_number, PinValue value, int timeout)
{
sw.Restart();
// Wait for pulse
while (sw.ElapsedMilliseconds < timeout && _gpio.Read(pin_number) != value)
{
}
if (sw.ElapsedMilliseconds >= timeout)
{
sw.Stop();
return(0);
}
sw.Restart();
// Wait for pulse end
while (sw.ElapsedMilliseconds < timeout && _gpio.Read(pin_number) == value)
{
}
sw.Stop();
return(sw.ElapsedMilliseconds < timeout ? sw.Elapsed.TotalMilliseconds : 0);
}
protected PinValue InternalReadInterrupt(Port port)
{
int pinNumber;
switch (port)
{
case Port.PortA:
pinNumber = _interruptA;
break;
case Port.PortB:
pinNumber = _interruptB;
break;
default:
throw new ArgumentOutOfRangeException(nameof(port));
}
if (pinNumber == -1)
{
throw new ArgumentException("No interrupt pin configured.", nameof(port));
}
return(_masterGpioController.Read(pinNumber));
}
private async Task <bool> Read(int pinNumber)
{
try
{
await _semaphore.WaitAsync();
if (_initialized)
{
return(_gpioController.Read(pinNumber) == PinValue.Low);
}
return(false);
}
finally
{
_semaphore.Release();
}
}
public PinValue Read(int pinNumber)
{
return(_controller.Read(pinNumber));
}