int pinLED[] = {2, 3, 4, 5, 6, 7, 8, 9};
int jumlahPin = 8;
lcd.begin(16, 2);

byte arrowRear[8] = {
    B10010,
    B01001,
    B00100,
    B00010,
    B00010,
    B00100,
    B01001,
    B10010,
  };

  byte batangKiri[8] = {
    B00000,
    B00000,
    B10000,
    B01111,
    B01111,
    B10000,
    B00000,
    B00000,
  };

byte loveKiri[8] = {
    B00100,
    B01110,
    B11111,
    B11111,
    B01111,
    B00111,
    B00011,
    B00001,
  };

byte loveKanan[8] = {
    B00100,
    B01110,
    B11111,
    B11111,
    B11110,
    B11100,
    B11000,
    B10000,
  };

byte batangKanan[8] = {
    B00000,
    B00000,
    B00000,
    B11111,
    B11111,
    B00000,
    B00000,
    B00000,
  };

byte arrowHead[8] = {
    B10000,
    B11000,
    B11100,
    B11111,
    B11111,
    B11100,
    B11000,
    B10000,
  };

    lcd.createChar(0, arrowRear);
  lcd.createChar(1, batangKiri);
  lcd.createChar(2, loveKiri);
  lcd.createChar(3, loveKanan);
  lcd.createChar(4, batangKanan);
  lcd.createChar(5, arrowHead);

  lcd.setCursor(5, 0);
  lcd.write(byte(0)); 
  lcd.setCursor(6, 0);
  lcd.write(byte(1)); 
  lcd.setCursor(7, 0);
  lcd.write(byte(2)); 
  lcd.setCursor(8, 0);
  lcd.write(byte(3));
  lcd.setCursor(9, 0);
  lcd.write(byte(4));
  lcd.setCursor(10,0);
  lcd.write(byte(5));


  lcd.setCursor(3, 1);
  lcd.print("Kelompok03");


byte angka[11] = {
  0b00111111,  // 0
  0b00000110,  // 1
  0b01011011,  // 2 
  0b01001111,  // 3
  0b01100110,  // 4
  0b01101101,  // 5
  0b01111101,  // 6
  0b00000111,  // 7
  0b01111111,  // 8
  0b01101111,  // 9
  0b10000000   // titik
};

bool startDisplay = false;

void setup() {
  for (int x = 0; x < jumlahPin; x++) {
    pinMode(pinLED[x], OUTPUT);
  }

  Serial.begin(9600);
  Serial.println("Mikrokontroler : 23.11.5901");
}

void loop() {

  if (Serial.available() > 0) {
    String input = Serial.readStringUntil('\n');

    // Jika input adalah "start", aktifkan startDisplay
    if (input.equalsIgnoreCase("start")) {
      startDisplay = true;
    }
  }

  // Jika startDisplay aktif, tampilkan angka 5901 satu kali
  if (startDisplay) {
    tampilkanAngka(5);
    delay(1000);
    tampilkanAngka(9);
    delay(1000);
    tampilkanAngka(0);
    delay(1000);
    tampilkanAngka(1);
    delay(1000);

    // Matikan startDisplay agar tidak mengulang
    startDisplay = false;

    // Bersihkan 7 segment setelah selesai menampilkan 5901
    clearSegment();
  }
}

void tampilkanAngka(int num) {
  byte digit = angka[num];  

  for (int i = 0; i < jumlahPin; i++) {
    digitalWrite(pinLED[i], bitRead(digit, i));
  }
}

void clearSegment() {
  for (int i = 0; i < jumlahPin; i++) {
    digitalWrite(pinLED[i], LOW);
  }
}