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);
angka = 5;
}

void loop() {

   tempil4Segmen(angka);
  if (digitalRead(A3)==0)
  {
    if (angka > 0) angka--;
    Serial.println(angka);
    delay(100);
  }
  else if (digitalRead(A4)== 0)
  {
    if (angka < 9) angka++;
     Serial.println(angka);
     delay(100);
  }
  else if (digitalRead(A5)==0)
  {
    angka = 5;
    Serial.println(angka);
    delay(100);  
  } 


}

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 tempil4Segmen(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(25);
  
  digitalWrite(segmenSatuan, LOW);
  digitalWrite(segmenPuluhan, LOW);
  digitalWrite(segmenRatusan, LOW);
  digitalWrite(segmenRibuan, LOW);

  tampilSegmen(ratusan);
  digitalWrite(segmenRatusan, HIGH);
  delay(25);

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

  tampilSegmen(puluhan);
  digitalWrite(segmenPuluhan, HIGH);
  delay(25);

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

  tampilSegmen(satuan);
  digitalWrite(segmenSatuan, HIGH);
  delay(25);
  


}