// Example by Tom Igoe

import processing.serial.*;

Serial myPort;    // The serial port:
PFont myFont;     // The display font:
String inString;  // Input string from serial port:
int lf = 10;      // ASCII linefeed

void setup() {
  size(400,200);
  // Make your own font. It's fun!
  myFont = loadFont("ArialMS-18.vlw");
  textFont(myFont, 18);
  // List all the available serial ports:
  println(Serial.list());
  // I know that the first port in the serial list on my mac
  // is always my  Keyspan adaptor, so I open Serial.list()[0].
  // Open whatever port is the one you're using.
  myPort = new Serial(this, Serial.list()[0], 9600);
  myPort.bufferUntil(lf);
}

void draw() {
  background(0);
  text("received: " + inString, 10,50);
}

void serialEvent(Serial p) {
  inString = (myPort.readString());
}