const byte PIN_LED[] = {2, 3, 4, 5, 6, 7, 8, 9};
const byte NYALA_LED[] = {0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8, 0X80, 0X90}; //4
byte angka;


#define segmenSatuan 10
#define segmenPuluhan 11
#define segmenRatusan 12
#define segmenRibuan 13

void setup() {
  // put your setup code here, to run once:
  for (int i = 0; i < 8; i++)
  {
    pinMode(PIN_LED[i], OUTPUT);
  }
  pinMode(segmenSatuan, OUTPUT);
  pinMode(segmenPuluhan, OUTPUT);
  pinMode(segmenRatusan, OUTPUT);
  pinMode(segmenRibuan, OUTPUT);

  pinMode(A3, INPUT);
  pinMode(A4, INPUT);
  pinMode(A5, INPUT);
  Serial.begin(115200);

}

void loop() {

  for (angka = 0; angka <= 9999; angka++)
  {
    for (byte ulangi = 0; ulangi < 12; ulangi++)
    {
      tampil4Segmen(angka);
      delay(1);
    }

  }
}

void tampilSegmen(int ledke)
{
  for (int i = 0; i < 8; i++) {
    // Membaca bit ke-i dari data (0-7)
    // Bit 0 (LSB) ke pin 2, Bit 7 (MSB) ke pin 9
    int bitValue = bitRead(NYALA_LED[ledke], i);
    // Menulis nilai bit ke pin (2 + i)
    digitalWrite(PIN_LED[i], bitValue);
  }
}

void tampil4Segmen(int angkanya)
{
  byte ribuan = angkanya / 1000;
  byte ratusan = (angkanya / 100) % 10;
  byte puluhan = (angkanya % 100) / 10;
  byte satuan = angkanya % 10;

  digitalWrite(segmenSatuan, LOW);
  digitalWrite(segmenPuluhan, LOW);
  digitalWrite(segmenRatusan, LOW);
  digitalWrite(segmenRibuan, LOW);

  tampilSegmen(ribuan);
  digitalWrite(segmenRibuan, HIGH);
  delay(5);

  digitalWrite(segmenSatuan, LOW);
  digitalWrite(segmenPuluhan, LOW);
  digitalWrite(segmenRatusan, LOW);
  digitalWrite(segmenRibuan, LOW);

  tampilSegmen(ratusan);
  digitalWrite(segmenRatusan, HIGH);
  delay(5);

  digitalWrite(segmenSatuan, LOW);
  digitalWrite(segmenPuluhan, LOW);
  digitalWrite(segmenRatusan, LOW);
  digitalWrite(segmenRibuan, LOW);

  tampilSegmen(puluhan);
  digitalWrite(segmenPuluhan, HIGH);
  delay(5);

  digitalWrite(segmenSatuan, LOW);
  digitalWrite(segmenPuluhan, LOW);
  digitalWrite(segmenRatusan, LOW);
  digitalWrite(segmenRibuan, LOW);

  tampilSegmen(satuan);
  digitalWrite(segmenSatuan, HIGH);
  delay(5);



}