// EŠTE #include knižnice pre MATRIX displej

const int buttonPin1 = 5;
int buttonState1 = HIGH;
int lastButtonState1 = HIGH;
unsigned long lastDebounceTime1 = 0;
unsigned long debounceInterval = 50;
int cislo = 0;
void setup() {
  pinMode(buttonPin1, INPUT_PULLUP);
  matrix.begin();
  matrix.setTextSize(1);
  matrix.setTextWrap(false);
}
void vykresli_cislo() {
  matrix.setTextColor(matrix.Color333(0, 1, 0));
  matrix.setCursor(13, 5);
  String cislo_ako_text = String(cislo);
  // VYPIS CISLA
  matrix.print(F(cislo_ako_text));
}
void loop() {
  int reading1 = digitalRead(buttonPin1);
  if (reading1 != lastButtonState1) {
    lastDebounceTime1 = millis();
  }

  if ((millis() - lastDebounceTime1) > debounceInterval) {
    if (reading1 != buttonState1) {
      buttonState1 = reading1;
      if (buttonState1 == HIGH) {
        cislo++;
        if (cislo > 9) {
          cislo = 0;
        }
        vykresli_cislo();
      }
    }
  }
  lastButtonState1 = reading1;
}