import processing.serial.*;

int c = 0; // To store data from serial port, used to color background
Serial port;
String buf="";
int cr = 13;  // ASCII return   == 13
int lf = 10;  // ASCII linefeed == 10

void setup() {
  size(200,200);
  println(Serial.list());
  port = new Serial(this, Serial.list()[6], 9600); 
}

void draw() {
 background(c); 
}

// Called whenever there is something available to read
void serialEvent(Serial port) {
   c = port.read();

  /* this print statement will allow you to see whether or not Processing can "hear" anything that 
  Arduino is sending. It should print all the changing values of the FSR or Photocell in your circuit
   If nothing is printing, you probably picked the wrong serial port. 
   */

  println(c);



  if (c != lf && c != cr) {
    buf += char(c);
  }
  if (c == lf) {
    c = int(buf);
    println("val="+c); 
    int x = int(random(0,width));
    int y = int(random(0,height));
    buf = "";
  
  }

}