#include <LiquidCrystal_I2C.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#include "RTClib.h"

RTC_DS1307 rtc;

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
#define DHTPIN 2
#define DHTTYPE    DHT22

DHT_Unified dht(DHTPIN, DHTTYPE);

LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display


int counter = 0;

void setup()
{
  lcd.init();                      // initialize the lcd
  // Print a message to the LCD.
  lcd.backlight();
  lcd.setCursor(3,0);
  lcd.print("Hello");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Today is:");
  dht.begin();
  sensor_t sensor;
  dht.temperature().getSensor(&sensor);
  dht.humidity().getSensor(&sensor);
  Serial.begin(115200);
  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.day(), DEC);
  Serial.print('/');
  Serial.print(now.month(), DEC);
  Serial.print('/');
  Serial.print(now.year(), 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.print(':');
 
  Serial.println();


  Serial.println();
  delay(3000);
  delay(100);

 sensors_event_t event;
  dht.temperature().getEvent(&event);
  if (!isnan(event.temperature)) {
      lcd.setCursor(0,1);
      lcd.print(event.temperature); // pokazwa gradusite ot senzora DHT 22
      lcd.print(F("\xdf")); // oznachenie gradus
      lcd.print(F("C")); // oznachenie C
  }
  dht.humidity().getEvent(&event);
  if (!isnan(event.relative_humidity)) {
      lcd.setCursor(0,2);
      lcd.print(event.relative_humidity);
      lcd.print(F("%"));} // procenti humidity
}