#define ENCODER_CLK 2
#define ENCODER_DT  3
int angka = 0;
int LEDMERAH = 5;
int LEDHIJAU = 6;
int LEDBIRU = 7;

void setup() {
  Serial.begin(115200);
  pinMode(ENCODER_CLK, INPUT);
  pinMode(ENCODER_DT, INPUT);
  pinMode(LEDMERAH, OUTPUT);
  pinMode(LEDHIJAU, OUTPUT);
  pinMode(LEDBIRU, OUTPUT);
}

int lastClk = HIGH;

void loop() {
  int newClk = digitalRead(ENCODER_CLK);
  if (newClk != lastClk) {
    // There was a change on the CLK pin
    lastClk = newClk;
    int dtValue = digitalRead(ENCODER_DT);
    if (newClk == LOW && dtValue == HIGH) {
      if (angka < 3) {
        angka += 1;
        Serial.print("Angka : ");
        Serial.println(angka);
      }
    }
    if (newClk == LOW && dtValue == LOW) {
      if (angka > -3) {
        angka -= 1;
        Serial.print("Angka : ");
        Serial.println(angka);
      }
    }
    // Mengatur LED sesuai dengan nilai angka
    if (angka == 0) {
      digitalWrite(LEDMERAH, LOW);
      digitalWrite(LEDHIJAU, LOW);
      digitalWrite(LEDBIRU, LOW);
    }if (angka == 1 || angka == -1) {
      digitalWrite(LEDMERAH, HIGH);
      digitalWrite(LEDHIJAU, LOW);
      digitalWrite(LEDBIRU, LOW);
    } else if (angka == 2 || angka == -2) {
      digitalWrite(LEDMERAH, LOW);
      digitalWrite(LEDHIJAU, HIGH);
      digitalWrite(LEDBIRU, LOW);
    } else if (angka == 3 || angka == -3) {
      digitalWrite(LEDMERAH, LOW);
      digitalWrite(LEDHIJAU, LOW);
      digitalWrite(LEDBIRU, HIGH);
    }
  }
}