int a = 2;//mendefinisikan tiap pin COM LED ke pin pada board sesuai koneksi wire
int b = 3;
int c = 4;
int d = 5;
int e = 6;
int f = 7;
int g = 8;

int led_L = 13;

// void reset_display (){ //untuk setting led mati
//   digitalWrite(a, HIGH); // high atau angka 1 sama untuk tipe common pin anode
//   digitalWrite(b, 1);
//   digitalWrite(c, 1);
//   digitalWrite(d, 1);
//   digitalWrite(e, 1);
//   digitalWrite(f, 1);
//   digitalWrite(g, 1);
// }

void off_display (){ //untuk setting led mati
   digitalWrite(a, 0); // low atau angka 0 sama untuk display common pin cathode (kebalikan jika menggunakan anode) 
   digitalWrite(b, 0);
   digitalWrite(c, 0);
   digitalWrite(d, 0);
   digitalWrite(e, 0);
   digitalWrite(f, 0);
   digitalWrite(g, 0);
 }

void display_0(){ // fuction menulis angka
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 1);
  digitalWrite(e, 1);
  digitalWrite(f, 1);
  digitalWrite(g, 0);
}

void display_1(){
  digitalWrite(a, 0);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 0);
  digitalWrite(e, 0);
  digitalWrite(f, 0);
  digitalWrite(g, 0);
}

void display_2(){
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 0);
  digitalWrite(d, 1);
  digitalWrite(e, 1);
  digitalWrite(f, 0);
  digitalWrite(g, 1);
}

void display_3(){
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 1);
  digitalWrite(e, 0);
  digitalWrite(f, 0);
  digitalWrite(g, 1);
}

void display_4(){
  digitalWrite(a, 0);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 0);
  digitalWrite(e, 0);
  digitalWrite(f, 1);
  digitalWrite(g, 1);
}

void display_5(){
  digitalWrite(a, 1);
  digitalWrite(b, 0);
  digitalWrite(c, 1);
  digitalWrite(d, 1);
  digitalWrite(e, 0);
  digitalWrite(f, 1);
  digitalWrite(g, 1);
}

void display_6(){
  digitalWrite(a, 1);
  digitalWrite(b, 0);
  digitalWrite(c, 1);
  digitalWrite(d, 1);
  digitalWrite(e, 1);
  digitalWrite(f, 1);
  digitalWrite(g, 1);
}

void display_7(){
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 0);
  digitalWrite(e, 0);
  digitalWrite(f, 0);
  digitalWrite(g, 0);
}

void display_8(){
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 1);
  digitalWrite(e, 1);
  digitalWrite(f, 1);
  digitalWrite(g, 1);
}

void display_9(){
  digitalWrite(a, 1);
  digitalWrite(b, 1);
  digitalWrite(c, 1);
  digitalWrite(d, 1);
  digitalWrite(e, 0);
  digitalWrite(f, 1);
  digitalWrite(g, 1);
}

int tambah = A4; // mendefinisikan tombol tambah (hijau)
int kurang = A5; // mendefinisikan tombol kurang (merah)

void setup() {
  pinMode(led_L, OUTPUT);
  // put your setup code here, to run once:
  Serial.begin(9600); //setup untuk display output
  pinMode(a, OUTPUT); //<< set pin sebagai output, default output adalah low, karena common Anoda 
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(f, OUTPUT);
  pinMode(g, OUTPUT);
//reset_display();
  pinMode(tambah, INPUT_PULLUP);//settup pin A4 untuk tombol hijau sebagai input
  pinMode(kurang, INPUT_PULLUP);//settup pin A5 untuk tombol merah sebagai input
}

void display(int number) //function memunculkan angka
{
  if(number == 0)
  {
    display_0();
  }
  else if (number == 1)
  {
    display_1();
  }
  else if (number == 2)
  {
    display_2();
  }
  else if (number == 3)
  {
    display_3();
  }
  else if (number == 4)
  {
    display_4();
  }
  else if (number == 5)
  {
    display_5();
  }
  else if (number == 6)
  {
    display_6();
  }
  else if (number == 7)
  {
    display_7();
  }
  else if (number == 8)
  {
    display_8();
  }
  else if (number == 9)
  {
    display_9();
  }
}


int tampung = 0; //mendefinisikan variabel global untuk angka yg dimunculkan

void loop() {
  digitalWrite(led_L, HIGH);
  //## code count up otomatis 1 - 9
  // display_0();
  // delay(1000);
  // //off_display();
  // //delay(500);
  // display_1();
  // delay(1000);
  // display_2();
  // delay(1000);
  // display_3();
  // delay(1000);
  // display_4();
  // delay(1000);
  // display_5();
  // delay(1000);
  // display_6();
  // delay(1000);
  // display_7();
  // delay(1000);
  // display_8();
  // delay(1000);
  // display_9();
  // delay(1000);
    // put your main code here, to run repeatedly:
  // Serial.println("Hello World");
  // Serial.println(3 * 5);

  // display(1);
  // delay(1000);
  // display(2);
  // delay(1000);
  // display(3);
  // delay(1000);
  // display(4);
  // delay(1000);
  // display(5);
  // delay(1000);
  // display(6);
  // delay(1000);
  // display(7);
  // delay(1000);
  // display(8);
  // delay(1000);
  // display(9);
  // delay(1000);
  if(digitalRead(tambah) == 0) //jika tomboh tambah ditekan
  {
    if (tampung > 9) //cek apakah nilai tampung lebih dari 9
    tampung = -1; //set nilai tampung jadi -1 agar ketika ditambah angka jadi 0 lagi
    else
    tampung = tampung + 1;//+ nilai tampung jika tombol tambah ditekan
  }
  else if (digitalRead(kurang) == 0)//jika tombol kurang ditekan
  {
    if (tampung < 1)//cek apakah nilai tampung kurang dari 1
    tampung = 10; //set nilai tampung jadi 10 agar ketika dikurangi angka jadi 9 lagi
    tampung = tampung - 1;//- nilai tampung jika tombol tambah ditekan
  }
  delay(200);
  display(tampung);//memunculkan angka sesuai nilai tampung (default awal 0)
}