// Serial Input 
// by BARRAGAN <http://barraganstudio.com> 

 
char val;         // variable to receive data from the serial port 
int ledpin = 48;  // LED connected to pin 48 (on-board LED) 
 
void setup() 
{ 
  pinMode(ledpin, OUTPUT);  // pin 48 (on-board LED) as OUTPUT 
  Serial.begin(9600);       // start serial communication at 9600bps 
} 
 
void loop() { 
  if( Serial.available() )       // if data is available to read 
  { 
    val = Serial.read();         // read it and store it in 'val' 
  } 
  if( val == 'H' )               // if 'H' was received 
  { 
    digitalWrite(ledpin, HIGH);  // turn ON the LED 
  } else { 
    digitalWrite(ledpin, LOW);   // otherwise turn it OFF 
  } 
  delay(100);                    // wait 100ms for next reading 
} 
 
/* Processing code for this example 
 
// mouseover serial 
// by BARRAGAN <http://barraganstudio.com> 
 
// Demonstrates how to send data to the Wiring I/O board, in order to 
// turn ON a light if the mouse is over a rectangle and turn it off 
// if the mouse is not. 
 
// created 13 May 2004 
// revised 29 April 2007 
 
import processing.serial.*; 
 
Serial port; 
 
void setup() 
{ 
  size(200, 200); 
  noStroke(); 
  frameRate(10); 
 
  // List all the available serial ports in the output pane. 
  // You will need to choose the port that the Wiring board is 
  // connected to from this list. The first port in the list is 
  // port #0 and the third port in the list is port #2. 
  println(Serial.list()); 
 
  // Open the port that the Wiring board is connected to (in this case #2) 
  // Make sure to open the port at the same speed Wiring is using (9600bps) 
  port = new Serial(this, Serial.list()[2], 9600); 
} 
 
// function to test if mouse is over square 
boolean mouseOverRect() 
{ 
  return ((mouseX >= 50)&&(mouseX <= 150)&&(mouseY >= 50)&(mouseY <= 150)); 
} 
 
void draw() 
{ 
  background(#222222); 
  if(mouseOverRect())      // if mouse is over square 
  { 
    fill(#BBBBB0);         // change color 
    port.write('H');       // send an 'H' to indicate mouse is over square 
  } else { 
    fill(#666660);         // change color 
    port.write('L');       // send an 'L' otherwise 
  } 
  rect(50, 50, 100, 100);  // draw square 
} 
 
*/