receive serial data and plot

serial.ino

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

void loop(){
  i++;
  Serial.write(150 + i);
  delay(1000);
}

serial.pde

import processing.serial.*;

Serial myPort;  // The serial port

void setup() {
  size(400,400);
  smooth();
  // List all the available serial ports
  printArray(Serial.list());
  // Open the port you are using at the rate you want:
  myPort = new Serial(this, Serial.list()[0], 9600);
}

void draw() {
  while (myPort.available() > 0) {
   int inByte = myPort.read();
   println(inByte);
   ellipse(200,inByte,100,100);
  }
}