int AddChangeSubscriber(GpioSubscriber subscriber)
{
int hash = subscriber.GetHashCode();
m_monitor |= (uint)1 << subscriber.GpioNumber;
m_lock.WaitOne();
m_changeSubscribers.Add(hash, subscriber);
m_lock.ReleaseMutex();
m_pi.ExecuteCommand(CommandCode.PI_CMD_NB, m_handle, (int)m_monitor);
return(hash);
}
public void WaitForEdge(int gpioNum, GpioEdge edge, int maxWaitingTimeInMs)
{
if (!m_run)
{
throw new Exception("GPIO Listener Thread not started!");
}
var tmpSubscriber = new GpioSubscriber(gpioNum, edge);
int hash = AddChangeSubscriber(tmpSubscriber);
var result = tmpSubscriber.WaitForChange(maxWaitingTimeInMs);
RemoveChangeSubscriber(hash);
if (!result)
{
throw new TimeoutException("Timeout waiting for level change on GPIO " + gpioNum);
}
}
