// Budeme mať 3 tlačidla i1,i2,i3
// Ak stlačíme tlačidlo i1 2x a i2 4x a i3 1x
// Vtedy chceme zasvietiť LED diodu.
// Iba  pri tejto kombinácií.

int i1 = 7;
int i2 = 6;
int i3 = 5;
int o1 = 4;

int i1_counter = 0;
int i2_counter = 0;
int i3_counter = 0;

int i1_pressed = false; 
int i2_pressed = false; 
int i3_pressed = false; 

void setup() {
  // put your setup code here, to run once:
  pinMode(i1, INPUT_PULLUP);
  pinMode(i2, INPUT_PULLUP);
  pinMode(i3, INPUT_PULLUP);
  pinMode(o1, OUTPUT);

  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  int i1_state = !digitalRead(i1);
  int i2_state = !digitalRead(i2);
  int i3_state = !digitalRead(i3);

  if(i1_state == HIGH && i1_pressed == false){
    i1_counter++;
    i1_pressed = true;
    Serial.println(i1_counter);
    delay(30);

  }else if(i1_state == LOW && i1_pressed == true){
    i1_pressed = false;
    delay(30);
  }
  else if(i2_state == HIGH && i2_pressed == false){
    i2_counter++;
    i2_pressed = true;
    Serial.println(i2_counter);
    delay(30);

  }else if(i2_state == LOW && i2_pressed == true){
    i2_pressed = false;
    delay(30);

  }else if(i3_state == HIGH && i3_pressed == false){
    i3_counter++;
    i3_pressed = true;
    Serial.print("Counter 3: ");
    Serial.println(i3_counter);
    delay(30);

  }else if(i3_state == LOW && i3_pressed == true){
    i3_pressed = false;
    delay(30);
  }

  if(i1_counter == 2 && i2_counter == 4 && i3_counter == 1){
    digitalWrite(o1, HIGH);
  }else{
    digitalWrite(o1, LOW);
  }
}