#define LED1 9
#define LED2 10
#define LED3 11
#define PB_UP 12
#define PB_DOWN 13
//7 Segments
#define SEGMENT_A 2
#define SEGMENT_B 3
#define SEGMENT_C 4
#define SEGMENT_D 5
#define SEGMENT_E 6
#define SEGMENT_F 7
#define SEGMENT_G 8

int value = 0;

void setup() {
  Serial.begin(9600);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(SEGMENT_A, OUTPUT);
  pinMode(SEGMENT_B, OUTPUT);
  pinMode(SEGMENT_C, OUTPUT);
  pinMode(SEGMENT_D, OUTPUT);
  pinMode(SEGMENT_E, OUTPUT);
  pinMode(SEGMENT_F, OUTPUT);
  pinMode(SEGMENT_G, OUTPUT);
  pinMode(PB_UP, INPUT);
  pinMode(PB_DOWN, INPUT);
}

void loop() {
  if (digitalRead(PB_UP) == 1 && value < 9) {
    delay(300);
    value += 1;
  }
  if (digitalRead(PB_DOWN) == 1 && value > 0) {
    delay(300);
    value -= 1;
  }
  displayDIGIT(value);
}

void displayDIGIT(int angka){
  if (angka == 0){
    digitalWrite(SEGMENT_A, 0);
    digitalWrite(SEGMENT_B, 0);
    digitalWrite(SEGMENT_C, 0);
    digitalWrite(SEGMENT_D, 0);
    digitalWrite(SEGMENT_E, 0);
    digitalWrite(SEGMENT_F, 0);
    digitalWrite(SEGMENT_G, 1);
  }
  if (angka == 1){
    digitalWrite(SEGMENT_A, 1);
    digitalWrite(SEGMENT_B, 0);
    digitalWrite(SEGMENT_C, 0);
    digitalWrite(SEGMENT_D, 1);
    digitalWrite(SEGMENT_E, 1);
    digitalWrite(SEGMENT_F, 1);
    digitalWrite(SEGMENT_G, 1);
  }
  if (angka == 2){
    digitalWrite(SEGMENT_A, 0);
    digitalWrite(SEGMENT_B, 0);
    digitalWrite(SEGMENT_C, 1);
    digitalWrite(SEGMENT_D, 0);
    digitalWrite(SEGMENT_E, 0);
    digitalWrite(SEGMENT_F, 1);
    digitalWrite(SEGMENT_G, 0);
  }
  if (angka == 3){
    digitalWrite(SEGMENT_A, 0);
    digitalWrite(SEGMENT_B, 0);
    digitalWrite(SEGMENT_C, 0);
    digitalWrite(SEGMENT_D, 0);
    digitalWrite(SEGMENT_E, 1);
    digitalWrite(SEGMENT_F, 1);
    digitalWrite(SEGMENT_G, 0);
  }
  if (angka == 4){
    digitalWrite(SEGMENT_A, 1);
    digitalWrite(SEGMENT_B, 0);
    digitalWrite(SEGMENT_C, 0);
    digitalWrite(SEGMENT_D, 1);
    digitalWrite(SEGMENT_E, 1);
    digitalWrite(SEGMENT_F, 0);
    digitalWrite(SEGMENT_G, 0);
  }
  if (angka == 5){
    digitalWrite(SEGMENT_A, 0);
    digitalWrite(SEGMENT_B, 1);
    digitalWrite(SEGMENT_C, 0);
    digitalWrite(SEGMENT_D, 0);
    digitalWrite(SEGMENT_E, 1);
    digitalWrite(SEGMENT_F, 0);
    digitalWrite(SEGMENT_G, 0);
  }
  if (angka == 6){
    digitalWrite(SEGMENT_A, 0);
    digitalWrite(SEGMENT_B, 1);
    digitalWrite(SEGMENT_C, 0);
    digitalWrite(SEGMENT_D, 0);
    digitalWrite(SEGMENT_E, 0);
    digitalWrite(SEGMENT_F, 0);
    digitalWrite(SEGMENT_G, 0);
  }
  if (angka == 7){
    digitalWrite(SEGMENT_A, 0);
    digitalWrite(SEGMENT_B, 0);
    digitalWrite(SEGMENT_C, 0);
    digitalWrite(SEGMENT_D, 1);
    digitalWrite(SEGMENT_E, 1);
    digitalWrite(SEGMENT_F, 1);
    digitalWrite(SEGMENT_G, 1);
  }
  if (angka == 8){
    digitalWrite(SEGMENT_A, 0);
    digitalWrite(SEGMENT_B, 0);
    digitalWrite(SEGMENT_C, 0);
    digitalWrite(SEGMENT_D, 0);
    digitalWrite(SEGMENT_E, 0);
    digitalWrite(SEGMENT_F, 0);
    digitalWrite(SEGMENT_G, 0);
  }
  if (angka == 9){
    digitalWrite(SEGMENT_A, 0);
    digitalWrite(SEGMENT_B, 0);
    digitalWrite(SEGMENT_C, 0);
    digitalWrite(SEGMENT_D, 0);
    digitalWrite(SEGMENT_E, 1);
    digitalWrite(SEGMENT_F, 0);
    digitalWrite(SEGMENT_G, 0);
  }
}