Serial problems between Arduino and Processing...

Forum 2005-2010 (read only) General Frequently-Asked Questions
3

Here is the code

Arduino:

void setup()
{
  Serial.begin(9600);
}

void loop()
{
  Serial.println(analogRead(3));
  delay(20);
}

and Processing:

import processing.serial.*;

Serial port;  
String pot = "";      // Data received from the serial port
int val;
int NEWLINE = 10;

void setup() 
{
  size(200, 200);
  String portName = Serial.list()[0];
  port = new Serial(this, portName, 9600);
}

void draw()
{
  if ( port.available() > 0) {  // If data is available,
   serialEvent(port.read());
  }

  print(val);
  print("  /  ");
  
 }

void serialEvent(int serial)
{
 
 if(serial != NEWLINE){
 
   pot += char(serial);
 
 } else {
   
  pot = pot.substring(0, pot.length()-1); 
  val = Integer.parseInt(pot); 
  pot = "";
 }
}

I just pulled from some examples and tried to simplify them. Thoughts?