#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "RTClib.h"

// LCD-Display mit I2C-Adresse 0x27 und einer Größe von 16x2 initialisieren
LiquidCrystal_I2C lcd(0x27, 20, 4);
RTC_DS1307 rtc;

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
// rtc.adjust(DateTime(2024, 11, 8, 12, 0, 0));


void setup() {
  // LCD-Display starten
  lcd.init();
  lcd.backlight(); // Hintergrundbeleuchtung einschalten

  // Text auf das LCD schreiben
  lcd.setCursor(0, 0);  // Cursor auf Zeile 0, Spalte 0 setzen
  lcd.print("Hello, World!"); // "Hello, World!" auf Zeile 1 schreiben

  lcd.setCursor(0, 1);  // Cursor auf Zeile 1, Spalte 0 setzen
  lcd.print("Arduino Nano");  // "Arduino Nano" auf Zeile 2 schreiben

if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }

}

void loop() {
 DateTime now = rtc.now();

/*
  Serial.print("Current time: ");
  Serial.print(now.year(), DEC);
  Serial.print('/');
  Serial.print(now.month(), DEC);
  Serial.print('/');
  Serial.print(now.day(), DEC);
  Serial.print(" (");
  Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
  Serial.print(") ");
  Serial.print(now.hour(), DEC);
  Serial.print(':');
  Serial.print(now.minute(), DEC);
  Serial.print(':');
  Serial.print(now.second(), DEC);
  Serial.println();
*/
  lcd.setCursor(0, 2);
  lcd.print(daysOfTheWeek[now.dayOfTheWeek()]);
  lcd.print(" ");
  lcd.print(now.hour(), DEC);
  lcd.print(':');
  lcd.print(now.minute(), DEC);
  lcd.print(':');
  lcd.print(now.second(), DEC);
  lcd.println();

  delay(3000);
}