private void EnsureInitialized()
{
// If we're already initialized, ignore
if (isInitialized)
{
return;
}
// Validate that the pin has been set
if (pin == null)
{
throw new MissingIoException(nameof(Pin));
}
bool driveSet = false;
// Use pull resistors?
if (usePullResistors)
{
// Check if resistors are supported
if (onValue == GpioPinValue.High)
{
pin.SetDriveModeWithFallback(GpioPinDriveMode.InputPullDown);
driveSet = true;
}
else
{
pin.SetDriveModeWithFallback(GpioPinDriveMode.InputPullUp);
driveSet = true;
}
}
if (!driveSet)
{
pin.SetDriveMode(GpioPinDriveMode.Input);
}
// Set a debounce timeout to filter out switch bounce noise
if (debounceTimeout > 0)
{
pin.DebounceTimeout = TimeSpan.FromMilliseconds(debounceTimeout);
}
// Determine state
IsOn = (pin.Read() == onValue);
// Subscribe to pin events
pin.ValueChanged += Pin_ValueChanged;
// Consider ourselves initialized now
isInitialized = true;
}
/// <summary>
/// Ensures that the helper has been initialized.
/// </summary>
public void EnsureInitialized()
{
if (isInitialized)
{
return;
}
// Validate that the pin has been set
if (pin == null)
{
throw new MissingIoException(nameof(Pin));
}
// Set as input, use resistors if supported
if (usePullResistors)
{
pin.SetDriveModeWithFallback(GpioPinDriveMode.InputPullUp);
}
else
{
pin.SetDriveMode(GpioPinDriveMode.Input);
}
// Set a debounce timeout to filter out switch bounce noise from a button press
pin.DebounceTimeout = TimeSpan.FromMilliseconds(debounceTimeout);
// Subscribe to pin events
pin.ValueChanged += Pin_ValueChanged;
// Consider ourselves initialized now
isInitialized = true;
}
private void EnsureInitialized()
{
if (isInitialized)
{
return;
}
// Make sure helper is initialized
buttonHelper.EnsureInitialized();
// Validate that required pins have been set
if (clockPin == null)
{
throw new MissingIoException(nameof(ClockPin));
}
if (directionPin == null)
{
throw new MissingIoException(nameof(DirectionPin));
}
// Use pull resistors?
if (buttonHelper.UsePullResistors)
{
clockPin.SetDriveModeWithFallback(GpioPinDriveMode.InputPullUp);
directionPin.SetDriveModeWithFallback(GpioPinDriveMode.InputPullUp);
}
else
{
clockPin.SetDriveMode(GpioPinDriveMode.Input);
directionPin.SetDriveMode(GpioPinDriveMode.Input);
}
// Set a debounce timeout to filter out bounce noise
//clockPin.DebounceTimeout = TimeSpan.FromMilliseconds(buttonHelper.DebounceTimeout);
//directionPin.DebounceTimeout = TimeSpan.FromMilliseconds(buttonHelper.DebounceTimeout);
clockPin.DebounceTimeout = TimeSpan.Zero;
directionPin.DebounceTimeout = TimeSpan.Zero;
// Update last value
lastDirValue = directionPin.Read();
// Subscribe to pin events
clockPin.ValueChanged += ClockPin_ValueChanged;
// Consider ourselves initialized now
isInitialized = true;
}