#include <TM1637Display.h>

#define CLK 3
#define DIO 4
#define BUTTON 6
#define LIMIT 60

unsigned long previousMillis=0;

bool buttonState;
bool lastButtonState=LOW;
unsigned long lastDebounceTime;
int debounceDelay=50;

boolean stav=true;


TM1637Display display(CLK, DIO);
uint8_t cas =LIMIT;

void setup() {
  pinMode(BUTTON, INPUT);

  display.setBrightness(0x0f);
  display.showNumberDec(cas,false);
  
}

void loop() {

  unsigned long currentMillis=millis();

  if(currentMillis-previousMillis>=1000 && stav)
  {
    previousMillis=currentMillis;
    display.showNumberDec(--cas,false);
    if(cas==0){
      tone(4,262,200);
      stav=false;
    }
  }

//tlacitko
  int reading = digitalRead(BUTTON);
  if (reading != lastButtonState) {
        lastDebounceTime = millis();
    }

    if ((millis() - lastDebounceTime) > debounceDelay) {
        if (reading != buttonState) {
            buttonState = reading;

           if (buttonState == HIGH && !stav) 
           {
            stav=true;
            cas=LIMIT;
            previousMillis=millis();
            display.showNumberDec(cas,false);
           }
           else if(buttonState == HIGH && stav){
            tone(4,292);
            /*delay(150);
            tone(4,192,200);*/
            stav=false;
           }
        }
    }
  lastButtonState=reading;

}