#include "RTClib.h"
#include "LiquidCrystal_I2C.h"

RTC_DS1307 rtc;
LiquidCrystal_I2C lcd(0x27, 16, 2);


float val1;
float val2;
int knop;
int knop1;

void setup() {
  Serial.begin(9600);
  pinMode(7, INPUT_PULLUP);
  lcd.init();
  lcd.backlight();

  if (! rtc.begin()) {
    Serial.println("Error!");
    Serial.flush();
    abort();
  }
}
void loop() {
  DateTime now = rtc.now();

  int year = now.year();
  int month = now.month();
  int day = now.day();
  int hour = now.hour();
  int minute = now.minute();
  int second = now.second();

  lcd.setCursor(0, 0);
  lcd.print(day);
  lcd.print(".");
  lcd.print(month);
  lcd.print(".");
  lcd.print(year);
  lcd.setCursor(0, 1);
  lcd.print(hour);
  lcd.print(":");
  lcd.print(minute);
  lcd.print(":");
  lcd.print(second);

  knop = !digitalRead(7);
  int potentiometr1 = analogRead(A0);
  int potentiometr2 = analogRead(A1);
  float val1 = 5.0 / 1024.0 * potentiometr1;
  float val2 = 5.0 / 1024.0 * potentiometr2;

  if (knop == 1 && knop1 == 0) {
    lcd.clear();
    knop1 == 1;
    lcd.setCursor(0, 0);
    lcd.print(val1);
    lcd.setCursor(0, 1);
    lcd.print(val2);
    
    delay(3000);
  }
  if (knop == 0 && knop1 == 1) {
    knop1 == 0;
    lcd.clear();
  }
  delay(1000);
}