import processing.serial.*;

Serial myPort;  // Create object from Serial class
String val;     // Data received from the serial port

void setup() {
	size(200, 200);

	// I know that the first port in the serial list on my mac
	// is Serial.list()[0].
	// On Windows machines, this generally opens COM1.
	// Open whatever port is the one you're using.
	println(Serial.list());
	String portName = Serial.list()[1]; //change the 0 to a 1 or 2 etc. to match your port
	myPort = new Serial(this, portName, 9600);
}

void draw() {
  if (mousePressed == true)
  {                           //if we clicked in the window
   myPort.write('1');         //send a 1
   println("1");
  } else
  {                           //otherwise
  myPort.write('0');          //send a 0
  }
}