/// <summary>
/// Called when any pin's mode changes
/// </summary>
/// <param name="portExpanderPin">The pin whose mode has changed</param>
protected override void outputModeChanged(PortExpanderPin portExpanderPin)
{
// we set the I/O mode by writing a 1 or 0 to the output port, so just
// flush out the data
Flush().Wait();
}
/// <summary>
/// Called when the output value of any pin has changed and should be written to the port
/// </summary>
/// <param name="portExpanderPin">The pin whose value changed</param>
protected override void outputValueChanged(PortExpanderPin portExpanderPin)
{
Flush().Wait();
}