// Morse code "S" using function
int ledPin = 0;

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

void loop() {
  morseS(200);  // Call function with 200ms timing
  delay(1000);  // Wait before repeating
}

void morseS(int timing) {
  // Three short blinks
  digitalWrite(ledPin, HIGH);
  delay(timing);
  digitalWrite(ledPin, LOW);
  delay(timing);
  
  digitalWrite(ledPin, HIGH);
  delay(timing);
  digitalWrite(ledPin, LOW);
  delay(timing);
  
  digitalWrite(ledPin, HIGH);
  delay(timing);
  digitalWrite(ledPin, LOW);
  delay(timing);
}