// 7 segment 1 digit display

// 7 segment 1 digit variables
int pin_a = 7;
int pin_b = 8;
int pin_c = 10;
int pin_d = 11;
int pin_e = 13;
int pin_f = 6;
int pin_g = 5;
int pin_dp = 9;

// Button variables
int pin_button = 3;
bool state_button, old_state_button;
int counter = 0;

void setup() {
  pinMode(pin_a, OUTPUT);
  pinMode(pin_b, OUTPUT);
  pinMode(pin_c, OUTPUT);
  pinMode(pin_d, OUTPUT);
  pinMode(pin_e, OUTPUT);
  pinMode(pin_f, OUTPUT);
  pinMode(pin_g, OUTPUT);
  pinMode(pin_dp, OUTPUT);

  pinMode(pin_button, INPUT);
  Serial.begin(9600);
}

void zero() {
  digitalWrite(pin_a, LOW);
  digitalWrite(pin_b, LOW);
  digitalWrite(pin_c, LOW);
  digitalWrite(pin_d, LOW);
  digitalWrite(pin_e, LOW);
  digitalWrite(pin_f, LOW);
  digitalWrite(pin_g, HIGH);
}

void one() {
  digitalWrite(pin_a, HIGH);
  digitalWrite(pin_b, LOW);
  digitalWrite(pin_c, LOW);
  digitalWrite(pin_d, HIGH);
  digitalWrite(pin_e, HIGH);
  digitalWrite(pin_f, HIGH);
  digitalWrite(pin_g, HIGH);
}

void two() {
  digitalWrite(pin_a, LOW);
  digitalWrite(pin_b, LOW);
  digitalWrite(pin_c, HIGH);
  digitalWrite(pin_d, LOW);
  digitalWrite(pin_e, LOW);
  digitalWrite(pin_f, HIGH);
  digitalWrite(pin_g, LOW);
}

void three() {
  digitalWrite(pin_a, LOW);
  digitalWrite(pin_b, LOW);
  digitalWrite(pin_c, LOW);
  digitalWrite(pin_d, LOW);
  digitalWrite(pin_e, HIGH);
  digitalWrite(pin_f, HIGH);
  digitalWrite(pin_g, LOW);
}

void four() {
  digitalWrite(pin_a, HIGH);
  digitalWrite(pin_b, LOW);
  digitalWrite(pin_c, LOW);
  digitalWrite(pin_d, HIGH);
  digitalWrite(pin_e, HIGH);
  digitalWrite(pin_f, LOW);
  digitalWrite(pin_g, LOW);
  digitalWrite(pin_dp, HIGH);
}

void five() {
  digitalWrite(pin_a, LOW);
  digitalWrite(pin_b, HIGH);
  digitalWrite(pin_c, LOW);
  digitalWrite(pin_d, LOW);
  digitalWrite(pin_e, HIGH);
  digitalWrite(pin_f, LOW);
  digitalWrite(pin_g, LOW);
}

void six() {
  digitalWrite(pin_a, LOW);
  digitalWrite(pin_b, HIGH);
  digitalWrite(pin_c, LOW);
  digitalWrite(pin_d, LOW);
  digitalWrite(pin_e, LOW);
  digitalWrite(pin_f, LOW);
  digitalWrite(pin_g, LOW);
}

void seven() {
  digitalWrite(pin_a, LOW);
  digitalWrite(pin_b, LOW);
  digitalWrite(pin_c, LOW);
  digitalWrite(pin_d, HIGH);
  digitalWrite(pin_e, HIGH);
  digitalWrite(pin_f, HIGH);
  digitalWrite(pin_g, HIGH);
}

void eight() {
  digitalWrite(pin_a, LOW);
  digitalWrite(pin_b, LOW);
  digitalWrite(pin_c, LOW);
  digitalWrite(pin_d, LOW);
  digitalWrite(pin_e, LOW);
  digitalWrite(pin_f, LOW);
  digitalWrite(pin_g, LOW);
}

void nine() {
  digitalWrite(pin_a, LOW);
  digitalWrite(pin_b, LOW);
  digitalWrite(pin_c, LOW);
  digitalWrite(pin_d, LOW);
  digitalWrite(pin_e, HIGH);
  digitalWrite(pin_f, LOW);
  digitalWrite(pin_g, LOW);
}

void dote(bool state) {
  if(state == HIGH) {
    digitalWrite(pin_dp, LOW); // dote is on
  } else {
    digitalWrite(pin_dp, HIGH); // dote is off
  }

}

void clear() {
  digitalWrite(pin_a, HIGH);
  digitalWrite(pin_b, HIGH);
  digitalWrite(pin_c, HIGH);
  digitalWrite(pin_d, HIGH);
  digitalWrite(pin_e, HIGH);
  digitalWrite(pin_f, HIGH);
  digitalWrite(pin_g, HIGH);
}

void blinkDote() {
  dote(HIGH);
  delay(500);
  dote(LOW);
  delay(500);
}

void numberShow() {
  clear();
  zero();
  blinkDote();

  clear();
  one();
  blinkDote();

  clear();
  two();
  blinkDote();

  clear();
  three();
  blinkDote();

  clear();
  four();
  blinkDote();

  clear();
  five();
  blinkDote();

  clear();
  six();
  blinkDote();

  clear();
  seven();
  blinkDote();

  clear();
  eight();
  blinkDote();

  clear();
  nine();
  blinkDote();
}

void button() {
  state_button = digitalRead(pin_button);

  if(state_button == LOW && old_state_button == HIGH) {
    counter++;
    Serial.println(counter);
  }

  if(state_button == HIGH && old_state_button == LOW) {
    delay(50);
  }

  old_state_button = state_button;
}

void loop() {

  button();

  switch(counter) {
    case 0:
      zero();
      break;
    case 1:
      one();
      break;
    case 2:
      two();
      break;
    case 3:
      three();
      break;
    case 4:
      four();
      break;
    case 5:
      five();
      break;
    case 6:
      six();
      break;
    case 7:
      seven();
      break;
    case 8:
      eight();
      break;
    case 9:
      nine();
      break;
    default:
      clear();
      break;
  }


}