//Listens to each available port for (listeningTime) seconds.
//If during this time the metho OnMessageArrived() gets
//called, we check whether this message is equal to the
//RECEIVER_IDENTIFICATOR string. If yes, we listen to only
//this port from now on.
private IEnumerator SearchForReceiver()
{
currentMode = Modes.Setup;
bool foundReceiver = false;
foreach (string port in SerialPort.GetPortNames())
{
Debug.Log("Listening to port " + port);
sc.StartListeningToPort(port);
yield return(new WaitForSeconds(listeningTime));
//if during the listeningTime, OnMessageArrived was called,
//currentMode will have been set to Modes.Receiving
if (currentMode == Modes.Receiving)
{
foundReceiver = true;
break;
}
else
{
sc.StopListeningToCurrentPort();
}
}
if (foundReceiver)
{
Debug.Log("We found a receiver!");
sc.SendSerialMessage(RECEIVER_RECOGNIZED);
}
else
{
Debug.Log("No receiver was found.");
currentMode = Modes.NoReceiver;
}
}