public void Run(IBackgroundTaskInstance taskInstance)
{
myDeferral = taskInstance.GetDeferral();
var gpioController = Windows.Devices.Gpio.GpioController.GetDefault();
if (gpioController != null)
{
pinBlink = gpioController.OpenPin(pinLED);
pinBlink.SetDriveMode(GpioPinDriveMode.Output);
BlinkMe(pinBlink, 1);
int pinCount = gpioController.PinCount;
System.Diagnostics.Debug.WriteLine("Board has " + pinCount + " pins");
BlinkMe(pinBlink, 2);
if (pinPIR <= pinCount)
{
System.Diagnostics.Debug.WriteLine("Assigning pin " + pinPIR + " for tests");
BlinkMe(pinBlink, 4);
pinUnderTest = gpioController.OpenPin(pinPIR);
if (pinUnderTest != null)
{
pinUnderTest.DebounceTimeout = TimeSpan.FromMilliseconds(100); // 100 ms, nominal value
pinUnderTest.SetDriveMode(pinMode); // pin data to be read by app
pinUnderTest.ValueChanged += pinUnderTest_ValueChanged; // event handler for rising/falling signal
System.Diagnostics.Debug.WriteLine("Awaiting state change for pin " + pinPIR +
" in mode " + pinMode.ToString());
BlinkMe(pinBlink, 8);
}
else
{
System.Diagnostics.Debug.WriteLine("Unable to initialize GPIO pin " + pinPIR);
}
}
else
{
System.Diagnostics.Debug.WriteLine("Pin number under test " + pinPIR + " beyond upper limit of " + pinCount);
}
}
else
{
System.Diagnostics.Debug.WriteLine("Unable to access GPIO controller");
}
}
private void ThrowExceptionIfDriveModeIsInput()
{
if (_pinMode == GpioPinDriveMode.Input || _pinMode == GpioPinDriveMode.InputPullUp || _pinMode == GpioPinDriveMode.InputPullDown)
{
throw new InvalidOperationException($"Can't set state on pin {PinNumber} since it is configured as an input pin ({_pinMode.ToString()})");
}
}
