import processing.io.*;

LED leds[];

// the Raspberry Pi has two build-in LEDs we can control

// led0 (green) and led1 (red)

void setup() {

String available[] = LED.list();

print("Available: ");

println(available);

// create an object for each LED and store it in an array

leds = new LED[available.length];

for (int i=0; i < available.length; i++) {

leds[i] = new LED(available[i]);

}

frameRate(1);

}

void draw() {

// make the LEDs count in binary

for (int i=0; i < leds.length; i++) {

if ((frameCount & (1 << i)) != 0) {

leds[i].brightness(1.0);

} else {

leds[i].brightness(0.0);

}

}

println(frameCount);

}

void keyPressed() {

// cleanup

for (int i=0; i < leds.length; i++) {

leds[i].close();

}

exit();

}