//Code a SOS message in Morse code
//The pattern should be in the format ... _ _ _ ...

constexpr int8_t ledPin = 2;

void setup() {
  pinMode(ledPin, OUTPUT);
}

void blink(uint16_t delayTime)
{
  for(uint8_t i=0;i<3;i++)
  {
    digitalWrite(ledPin, HIGH);
    delay(delayTime);
    digitalWrite(ledPin, LOW);
    delay(delayTime);
  }
}

void loop() {
  blink(500);
  blink(1000);
}