/// <inheritdoc/>
protected override void Dispose(bool disposing)
{
if (_pinNumberToEventHandler != null)
{
foreach (KeyValuePair <int, LibGpiodDriverEventHandler> kv in _pinNumberToEventHandler)
{
LibGpiodDriverEventHandler eventHandler = kv.Value;
eventHandler.Dispose();
}
_pinNumberToEventHandler.Clear();
}
if (_pinNumberToSafeLineHandle != null)
{
foreach (int pin in _pinNumberToSafeLineHandle.Keys)
{
if (_pinNumberToSafeLineHandle.TryGetValue(pin, out SafeLineHandle pinHandle))
{
pinHandle?.Dispose();
}
}
_pinNumberToSafeLineHandle.Clear();
}
_chip?.Dispose();
_chip = null;
base.Dispose(disposing);
}
/// <inheritdoc/>
protected internal override void AddCallbackForPinValueChangedEvent(int pinNumber, PinEventTypes eventTypes, PinChangeEventHandler callback)
{
if ((eventTypes & PinEventTypes.Rising) != 0 || (eventTypes & PinEventTypes.Falling) != 0)
{
LibGpiodDriverEventHandler eventHandler = _pinNumberToEventHandler.GetOrAdd(pinNumber, PopulateEventHandler);
if ((eventTypes & PinEventTypes.Rising) != 0)
{
eventHandler.ValueRising += callback;
}
if ((eventTypes & PinEventTypes.Falling) != 0)
{
eventHandler.ValueFalling += callback;
}
}
else
{
throw ExceptionHelper.GetArgumentException(ExceptionResource.InvalidEventType);
}
}
/// <inheritdoc/>
protected internal override WaitForEventResult WaitForEvent(int pinNumber, PinEventTypes eventTypes, CancellationToken cancellationToken)
{
if ((eventTypes & PinEventTypes.Rising) != 0 || (eventTypes & PinEventTypes.Falling) != 0)
{
LibGpiodDriverEventHandler eventHandler = _pinNumberToEventHandler.GetOrAdd(pinNumber, PopulateEventHandler);
if ((eventTypes & PinEventTypes.Rising) != 0)
{
eventHandler.ValueRising += Callback;
}
if ((eventTypes & PinEventTypes.Falling) != 0)
{
eventHandler.ValueFalling += Callback;
}
bool eventOccurred = false;
PinEventTypes typeOfEventOccured = PinEventTypes.None;
void Callback(object o, PinValueChangedEventArgs e)
{
eventOccurred = true;
typeOfEventOccured = e.ChangeType;
}
WaitForEventResult(cancellationToken, eventHandler.CancellationTokenSource.Token, ref eventOccurred);
RemoveCallbackForPinValueChangedEvent(pinNumber, Callback);
return(new WaitForEventResult
{
TimedOut = !eventOccurred,
EventTypes = eventOccurred ? typeOfEventOccured : PinEventTypes.None,
});
}
else
{
throw ExceptionHelper.GetArgumentException(ExceptionResource.InvalidEventType);
}
}