/*
 * Latihan 1: Simulasi Lampu Darurat
 * Nama     : Aprisa Idma Mutiara
 * NIM      : 2209106001
 * Platform : ESP32-S3
 */

// Definisi pin
const int pinLed    = 2;
const int pinButton = 39; 

void setup() {
  Serial.begin(115200);
  delay(1000);

  // Konfigurasi pin
  pinMode(pinLed, OUTPUT);
  pinMode(pinButton, INPUT_PULLUP);

  Serial.println("Program Simulasi Lampu Darurat dimulai!");
  Serial.println("Tekan tombol untuk menyalakan LED");
}

void loop() {
  // Baca status tombol
  int buttonState = digitalRead(pinButton);

  if (buttonState == LOW) {
    blinkSOS();
    Serial.println("Tombol ditekan - LED berkedip");
  } else {
    digitalWrite(pinLed, LOW); 
    Serial.println("Tombol dilepas - LED mati");
  }
  delay(100);
}

void blinkSOS() {
  // S = ••• (3 kedipan pendek)
  for (int i = 0; i < 3; i++) {
    digitalWrite(pinLed, HIGH);
    delay(300);
    digitalWrite(pinLed, LOW);
    delay(300);
  }

  delay(400);  // jeda antar karakter

  // O = ––– (3 kedipan panjang)
  for (int i = 0; i < 3; i++) {
    digitalWrite(pinLed, HIGH);
    delay(800);
    digitalWrite(pinLed, LOW);
    delay(800);
  }

  delay(400);  // jeda antar karakter

  // S = ••• (3 kedipan pendek)
  for (int i = 0; i < 3; i++) {
    digitalWrite(pinLed, HIGH);
    delay(300);
    digitalWrite(pinLed, LOW);
    delay(300);
  }

  delay(1000);  // jeda antar pola
}