I have never used any arduino library, so I dont know what it does.

I know however, that you *can* establish a serial connection with more than one arduino.

This is how I do it. Take a look at the call response example which comes with processing (or arduino? dont remember) and then see how I modified it, so that it works with two connections.

Heres my code:

1. import processing.serial.*; //library for serial communication
2. Serial firstArduinoPort; //creates object "firstArduinoPort" of serial class
3. Serial secondArduinoPort;   //creates object "secondArduinoPort" of serial class
4. //==================================================================
5. void setup()
6. {
7.   println(Serial.list()); //prints a list of open ports use this to doublecheck which port is which
8.   //also make sure to assign correct boud rate
9. 
   
10.   //initialize serials 
11.   firstArduinoPort = new Serial(this, Serial.list()[0], 38400); //port 4
12.   firstArduinoPort.bufferUntil(' ');
13.   secondArduinoPort = new Serial(this, Serial.list()[1], 9600); //port 6
14.   secondArduinoPort.bufferUntil(' ');
15. }
16. //==================================================================
17. void draw()
18. {
19.   firstArduinoPort.write("this string will be sent to your first arduino");
20.   secondArduinoPort.write("this string will be sent to your second arduino");
21. }
22. 
    
23. 
    
24. 
    
25. // this function is called whenever serial information is recieved
26. void serialEvent(Serial myPort) {
27.   //println("serial event detected");
28.   if (myPort == firstArduinoPort) {
29.    
    
30. 
    
31.     //--------------code for recieving and parcing serial information from Arduino1 goes here------------------//
32.     /// check processing tutorial on serial communication (serial call/response) example
33.     String myString = firstArduinoPort.readStringUntil(' '); //reads string until space -- follow example
34. }
35. else if (myPort == secondArduinoPort) {
36. 
    
37. 
    
38.     //--------------code for recieving and parcing serial information from Arduino1 goes here------------------//
39.     /// check processing tutorial on serial communication (serial call/response) example
40.     String myString = secondArduinoPort.readStringUntil(' ');
41.     }
42.   }

1.  

Hope thats clear, quite tired, so there may be mistakes in there - did not double check it.

Does this help?

p.

I'm trying to use this if/else if method along with the serial call/response method, but I'm getting caught up in the estabolishContact2() loop.  Instead of 2 Arduino's, I'm using an Arduino Mega with 2 serial ports.