Processing 2.0 communication with Arduino via serial

This example demonstrate how to send date via serial with Processing 2.0. It work with Arduino Due with code in last post, to send command from PC running Processing 2.0, to Arduino Due.

Processing 2.0 communication with Arduino via serial

import processing.serial.*;

Serial myArduinoPort;

int buttonA_x = 300;
int buttonA_y = 50;
int buttonA_width = 50;
int buttonA_height = 50;
int buttonA_colorR = 0xff;
int buttonA_colorG = 0x00;
int buttonA_colorB = 0x00;
 
int buttonB_x = 300;
int buttonB_y = 150;
int buttonB_width = 50;
int buttonB_height = 50;
int buttonB_r = 10;
int buttonB_color = 200;
 
int defaultColor = 150;
 
boolean buttonA_clicked = false;
boolean buttonB_clicked = false;
 
void setup() {  // setup() runs once
  size(400, 300);
  background(255);
  
  //Get serial port for Arduino
  String arduinoPort = Serial.list()[0];
  println(arduinoPort);
  myArduinoPort = new Serial(this, arduinoPort, 9600);
  
}
  
void draw() {
   
  if(buttonA_clicked){
    fill(buttonA_colorR, buttonA_colorG, buttonA_colorB);
  }else if(buttonB_clicked){
    fill(buttonB_color);
  }else{
    fill(defaultColor);
  }
  ellipse(width/2, height/2, 100, 100);
 
  fill(buttonA_colorR, buttonA_colorG, buttonA_colorB);
  rect(buttonA_x, buttonA_y, buttonA_width, buttonA_height);
   
  fill(buttonB_color);
  rect(buttonB_x, buttonB_y, buttonB_width, buttonB_height, buttonB_r);
}
 
/* The mouseClicked() function is called once after a mouse button 
 * has been pressed and then released.
 */
void mouseClicked(){
  // mouseX = x of mouse click position
  // mouseY = y of mouse click position
   
  if (mouseX >= buttonA_x && mouseX <= buttonA_x + buttonA_width && 
      mouseY >= buttonA_y && mouseY <= buttonA_y + buttonA_height) {
     buttonA_clicked = true;
     
     myArduinoPort.write("H");
   } else {
     buttonA_clicked = false;
   }
    
   if (mouseX >= buttonB_x && mouseX <= buttonB_x + buttonB_width && 
       mouseY >= buttonB_y && mouseY <= buttonB_y + buttonB_height) {
     buttonB_clicked = true;
     
     myArduinoPort.write("L");
   } else {
     buttonB_clicked = false;
   }
}