/*
  Blinky

Toggles the LED of the Arduino repeatedly on and off.

by Martin Stokroos
m.stokroos@rug.nl
*/

#define PIN_LED 13

// the setup function called once after reset
void setup() {
  // initialize digital pin connected to the LED as an output.
  pinMode(PIN_LED, OUTPUT);
}

// infinite program loop
void loop() {
  digitalWrite(PIN_LED, HIGH);   // turn the LED on
  delay(500);                    // wait for half a second
  digitalWrite(PIN_LED, LOW);    // turn the LED off
  delay(500);                    // wait for half a second
}

// end