// Pin assignment
#define RED_A     2
#define YELLOW_A  4
#define GREEN_A   5

#define RED_B     12
#define YELLOW_B  13
#define GREEN_B   14

#define RED_C     16
#define YELLOW_C  17
#define GREEN_C   18

#define BUZZER_PIN 33  // Buzzer aktif tinggi

void setLights(int rA, int yA, int gA,
               int rB, int yB, int gB,
               int rC, int yC, int gC) {
  digitalWrite(RED_A, rA);
  digitalWrite(YELLOW_A, yA);
  digitalWrite(GREEN_A, gA);

  digitalWrite(RED_B, rB);
  digitalWrite(YELLOW_B, yB);
  digitalWrite(GREEN_B, gB);

  digitalWrite(RED_C, rC);
  digitalWrite(YELLOW_C, yC);
  digitalWrite(GREEN_C, gC);
}

void setup() {
  // Set all pins as OUTPUT
  int pins[] = {
    RED_A, YELLOW_A, GREEN_A,
    RED_B, YELLOW_B, GREEN_B,
    RED_C, YELLOW_C, GREEN_C,
    BUZZER_PIN
  };

  for (int i = 0; i < sizeof(pins)/sizeof(pins[0]); i++) {
    pinMode(pins[i], OUTPUT);
    digitalWrite(pins[i], LOW); // Ensure all off initially
  }
}

void loop() {
  // === Jalan A Hijau ===
  setLights(LOW, LOW, HIGH,  HIGH, LOW, LOW,  HIGH, LOW, LOW);
  digitalWrite(BUZZER_PIN, LOW);
  delay(10000);

  // === Jalan A Kuning ===
  setLights(LOW, HIGH, LOW,  HIGH, LOW, LOW,  HIGH, LOW, LOW);
  digitalWrite(BUZZER_PIN, HIGH);
  delay(5000);
  digitalWrite(BUZZER_PIN, LOW);

  // === Jalan B Hijau ===
  setLights(HIGH, LOW, LOW,  LOW, LOW, HIGH,  HIGH, LOW, LOW);
  delay(10000);

  // === Jalan B Kuning ===
  setLights(HIGH, LOW, LOW,  LOW, HIGH, LOW,  HIGH, LOW, LOW);
  digitalWrite(BUZZER_PIN, HIGH);
  delay(5000);
  digitalWrite(BUZZER_PIN, LOW);

  // === Jalan C Hijau ===
  setLights(HIGH, LOW, LOW,  HIGH, LOW, LOW,  LOW, LOW, HIGH);
  delay(10000);

  // === Jalan C Kuning ===
  setLights(HIGH, LOW, LOW,  HIGH, LOW, LOW,  LOW, HIGH, LOW);
  digitalWrite(BUZZER_PIN, HIGH);
  delay(5000);
  digitalWrite(BUZZER_PIN, LOW);
}