private void Update()
{
// Read X and Y values
var x = xChannel.ReadRatio();
var y = yChannel.ReadRatio();
// Scale to -1 to 1, and Y needs to be inverted
x = (x * 2) - 1;
y = (-y * 2) + 1;
// Button
bool pressed = false;
if (buttonPin != null)
{
pressed = (buttonPin.Read() == GpioPinValue.Low);
}
// Update current value
lock (currentReading)
{
currentReading = new ThumbstickReading(x, y, pressed);
}
// Notify
readingChangedEvent.Raise(this, new ThumbstickReadingChangedEventArgs(currentReading));
}
private void EnsureInitialized()
{
if (isInitialized)
{
return;
}
// Validate
if (xChannel == null)
{
throw new MissingIoException(nameof(XChannel));
}
if (yChannel == null)
{
throw new MissingIoException(nameof(YChannel));
}
// Start with fake reading
currentReading = new ThumbstickReading(0, 0, false);
// Initialize button?
if (buttonPin != null)
{
if (buttonPin.IsDriveModeSupported(GpioPinDriveMode.InputPullUp))
{
buttonPin.SetDriveMode(GpioPinDriveMode.InputPullUp);
}
else
{
buttonPin.SetDriveMode(GpioPinDriveMode.Input);
}
buttonPin.DebounceTimeout = TimeSpan.FromMilliseconds(50);
}
isInitialized = true;
}
