/* 
Zapojenie s dvojicou tlačidiel a jednou LED diódou. 
Jedno tlačidlo zrýchľuje a druhé spomaľuje blikanie.
*/


// Cervene tlacidlo spomaluje diodu o 50ms
// Zelene robi opak - zrychluje o 50ms


//Deklaracia LED + tlacidiel
const int ledPin13 = 13;
const int buttonPin2 = 2;
const int buttonPin3 = 3;


int GreenButton = 0;
int RedButton = 0;

// Rychlost blikanie LED
int speedOfFlashing = 500;


void setup() {
  pinMode(buttonPin2, INPUT);
  pinMode(buttonPin3, INPUT);

  pinMode(ledPin13, OUTPUT);

  Serial.begin(9600);
}

void loop() {
  
  // Citanie oboch tlacidiel
  if(GreenButton != 1){
    GreenButton = digitalRead(buttonPin2);
  }
  if(RedButton != 1){
    RedButton = digitalRead(buttonPin3);
  }
  


  if (GreenButton == 0){
    GreenButton = 0;
  }
  else{
    GreenButton = 1;
    speedOfFlashing += 50;    
  }


  if (RedButton == 0 ){
      RedButton = 0;
  }
  else{
    RedButton = 1;
    speedOfFlashing -= 50;
  }

  // Nastavenie LED blikania
  digitalWrite(ledPin13, HIGH);
  delay(speedOfFlashing / 2);
  digitalWrite(ledPin13, LOW);
  delay(speedOfFlashing / 2);


  // Serial output
  Serial.print("RedButton: ");
  Serial.print(RedButton);
  
  Serial.print(" | ");

  Serial.print("GreenButton: ");
  Serial.print(GreenButton);

  Serial.print(" | ");

  Serial.print("SpeedOfLed: ");
  Serial.print(speedOfFlashing);
  Serial.println("ms");
}