Hi guys, first post here.

My problem is as follows -

I am following an Arduino tutorial with processing and TouchOSC on my iPhone to control an RGB LED. So far, I have the TouchOSC interface created and it can control the Processing sketch (3 simple sliders). However, I run into the following problem when trying to add the Arduino to the equation.

Here is the code for the Procsessing sketch:

1. import cc.arduino.*;
2. import processing.serial.*;
3. import oscP5.*;
4. import netP5.*;
5. 
   
6. Arduino arduino;
7. 
   
8. OscP5 oscP5;
9. 
   
10. float redAmount = 0.0f;
11. float greenAmount = 0.0f;
12. 
    
13. float blueAmount = 0.0f;
14. 
    
15. void setup(){
16.   size(320, 480);
17.   background(0);
18.   oscP5 = new OscP5(this, 8000); 
19.   arduino = new Arduino(this, Arduino.list()[0],57600);
20.  
    
21.  
    
22. }
23. 
    
24. 
    
25. void draw(){
26.   background(redAmount, greenAmount, blueAmount);
27.  
    
28.   fill(0);
29.   //red rect
30.   stroke(255,0,0);
31.   rect(34,39,67,255);
32.   fill(50,40,40);
33.   rect(34,39+255,67,-redAmount);
34.  
    
35.   //green rect
36.   fill(0);
37.   stroke(0,255,0);
38.   rect(124,39,67,255);
39.  fill(40,50,40);
40.   rect(124,39+255,67,-greenAmount);
41.  
    
42.   //blue rect
43.   fill(0);
44.   stroke(0,0,255);
45.   rect(216,39,67,255);
46.   fill(40,40,50);
47.   rect(216,39+255,67,-blueAmount);
48.  
    
49.   //write to arduino
50.   arduino.analogWrite(11, int(redAmount));
51.   arduino.analogWrite(10, int(greenAmount));
52.   arduino.analogWrite(9, int(blueAmount));
53.  
    
54.  
    
55.  
    
56. }
57. 
    
58. void oscEvent(OscMessage theOscMessage){
59.   String addr = theOscMessage.addrPattern();
60.   float val = theOscMessage.get(0).floatValue();
61.  
    
62.   if(addr.equals("/1/red")){ redAmount = val;}
63.   if(addr.equals("/1/green")){ greenAmount = val;}
64.   if(addr.equals("/1/blue")){ blueAmount = val;}
65. 
    
66.  
    
67.  
    
68.  
    
69. }

The issue occurs at the red line.

The error is as follows:

Exception in thread "Animation Thread" java.lang.ArrayIndexOutOfBoundsException: 0
    at Colour_Mixer.setup(Colour_Mixer.java:45)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:662)

I have read that I should perform a println(Arduino.list()), but where can I read the output of this command?

I am running Ubuntu Linux 10.10 Maverick Meerkat 64 bit, Processing 1.5.1, and I have tried uploading both the Standard Firmata and the Standard Firmata For Uno sketches to the Arduino.

Thanks in advance,

Sam