/*
==== Task 1 - Buzzer SOS Using a Function ====
           Author: Roberto Palozzo
==============================================
*/

int buzzerPin = 8;

// Function that generates 3 consecutive beeps
// "onTime" is the duration (in ms) of each single beep
void beep(int onTime) {
  for (int i=0; i<3; i++) {       // repeat 3 times
    tone(buzzerPin, 400);         // turns on the buzzer at 400 Hz
    delay(onTime);                // keeps the tone on for "onTime" ms
    noTone(buzzerPin);            // turns off the tone
    delay(200);                   // 200 ms pause between beeps
  }
}

void setup() {
  Serial.begin(115200);
  pinMode(buzzerPin, OUTPUT);
}

void loop() {
  beep(200);     // 3 short beep -> letter "S" in Morse code (S O S)
  beep(600);     // 3 long beep -> letter "O" in Morse code
  beep(200);     // 3 short beep -> letter "S" in Morse code
  delay(2000);   // 2 sec pause before repeating the SOS signal
}