busy_list.pde

#include <LED.h>
#include <Button.h>

const int AVAILABLE_LED = 2;
const int BUSY_LED = 3;
const int INTERRUPTED_LED = 4;
Button btn_interrupted = Button(12,PULLUP);
Button btn_available = Button(8,PULLUP);
Button btn_busy = Button(9, PULLUP);
LED led_available = LED(AVAILABLE_LED);
LED led_busy = LED(BUSY_LED);
LED led_interrupted = LED(INTERRUPTED_LED);
boolean is_busy = false;

void setup() {
}

void loop() {
  if (btn_available.isPressed()) {
    set_available();
  }

  if(btn_busy.isPressed()) {
    set_busy();
  }  

  if(is_busy && btn_interrupted.isPressed()) {
    note_interruption();
  }
}

void set_available() {
    is_busy = false;
    led_available.on();
    led_busy.off();

}

void set_busy() {
    is_busy = true;
    led_busy.on();   
    led_available.off();
}

void note_interruption() {
  for(int i = 0; i < 6; i++) {
    led_interrupted.toggle();
    delay(200);
  }
}