private void MotionSensorPin_ValueChanged(GpioPin sender, GpioPinValueChangedEventArgs args)
{
if (currentValue == args.Edge) //TODO: Is it needed? the same edge should not happend twice, it is not state value but state change
{
return;
}
switch (args.Edge)
{
case GpioPinEdge.RisingEdge:
if (MotionDetected == null)
{
return;
}
MotionDetected.Invoke(this, null);
break;
case GpioPinEdge.FallingEdge:
if (MotionUndetected == null)
{
return;
}
MotionUndetected.Invoke(this, null);
break;
}
currentValue = args.Edge;
}
private void FinalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
if (Detector.ProcessFrame((Bitmap)eventArgs.Frame.Clone()) > DetectionThreshold)
{
MotionDetected?.Invoke();
}
}
private void OnPinChanged(object sender, PinValueChangedEventArgs pinValueChangedEventArgs)
{
var value = gpioController.Read(InPinNumber);
var duration = DateTime.Now - triggerTimestamp;
if (duration.TotalMilliseconds < InterruptTime)
{
return;
}
//Console.WriteLine(duration);
if (value == PinValue.Low)
{
triggerTimestamp = DateTime.Now;
MotionNotDetected?.Invoke(this, EventArgs.Empty);
}
else if (value == PinValue.High)
{
triggerTimestamp = DateTime.Now;
MotionDetected?.Invoke(this, EventArgs.Empty);
}
}
private void DispatchEvents(object sender, BinaryStateChangedEventArgs eventArgs)
{
// The relay at the motion detector is awlays held to high.
// The signal is set to false if motion is detected.
if (eventArgs.NewState == BinaryState.Low)
{
MotionDetected?.Invoke(this, EventArgs.Empty);
}
else
{
DetectionCompleted?.Invoke(this, EventArgs.Empty);
}
}
private async void _device_NewFrame(object sender, AForge.Video.NewFrameEventArgs eventArgs)
{
//detect motion
if (DetectorConfiguration != null)
{
var result = await DetectMotionAsync(_previousFrame, eventArgs.Frame);
if (result.Direction.X != MovementDirection.None && result.Direction.Y != MovementDirection.None)
{
MotionDetected?.Invoke(this, result);
}
}
_previousFrame = eventArgs.Frame;
}
/// <summary>
/// Start sensor's reading loop
/// </summary>
private async void Run()
{
await Task.Factory.StartNew(async() =>
{
while (true)
{
if (IsActive)
{
var value = Pin.Read();
if (value == GpioPinValue.High)
{
MotionDetected?.Invoke(Pin.PinNumber);
}
await Task.Delay(1000);
}
}
});
}
public override void ParseData(JObject data)
{
if (data["status"] != null)
{
Status = data["status"].ToString();
if (Status == "motion")
{
LastMotionTimestamp = DateTime.Now;
MotionDetected?.Invoke(this, EventArgs.Empty);
}
}
if (data["no_motion"] != null)
{
NoMotion = int.Parse(data["no_motion"].ToString());
OnNoMotion?.Invoke(this, new NoMotionEventArgs(NoMotion));
}
}
/// <summary>
/// Enables the sensor, and listens for motion detection
/// </summary>
/// <param name="sensorPin">The GPIO pin of the PIR Sensor</param>
public PirSensor(GpioPin sensorPin)
{
sensorPin.PinMode = GpioPinDriveMode.Input;
sensorPin.RegisterInterruptCallback(EdgeDetection.FallingEdge, () => MotionDetected.Invoke(this, EventArgs.Empty));
}
protected virtual void OnMotionDetected(EventArgs e)
{
MotionDetected?.Invoke(this, e);
}
public void DetectMotion()
{
MotionDetected?.Invoke(this, EventArgs.Empty);
}
private void OnMotionDetected()
{
MotionDetected?.Invoke();
}