#define BUTTON_PIN 10

// If the timer isr is corrected
// to not take so long change this to 0.
#define BYPASS_TIMER_ISR 1

void setup()
{
  pinMode(BUTTON_PIN, INPUT);
  pinMode(A0, OUTPUT);
  pinMode(A1, OUTPUT);
  pinMode(A1, OUTPUT);
  digitalWrite(A0, LOW);
  digitalWrite(A1, LOW);
  digitalWrite(A2, LOW);
  //digitalWrite(BUTTON_PIN, HIGH);
}


void loop()
{
  delay(1000);
  digitalWrite(A1, HIGH);

  digitalWrite(13, !digitalRead(13));
  digitalWrite(A2, !digitalRead(A2));

  if (digitalRead(BUTTON_PIN) == 0)
  {
    digitalWrite(A0, HIGH);
    delay(500);
    digitalWrite(A0, LOW);

   }
   else
   {
     digitalWrite(A0, LOW);
   }
   digitalWrite(A1, LOW);

}