#include "RTClib.h"
RTC_DS1307 rtc;
char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 1);  // Set the LCD I2C address
int pinYear = 7;
int pinDay = 2;
int pinMonth = 4;
int pinHour = 8;
int pinMinute = 5;
int pinBregg = 3;
float AngleBregg=10;
int Y;
int M;
void setup()  
{
  pinMode(8,INPUT);//инициализация портов

  
  lcd.begin(20,4); // Initialize LCD
  lcd.setCursor(3,0); // Set the cursor at the 4th column and 1st row
  lcd.print("Hello!");
  lcd.setCursor(8,1);  // Set the cursor at the 9th column and 2nd row
  lcd.print("AngleBregg");
  lcd.setCursor(0,2);  // Set the cursor at the 1st column and 3rd row
  lcd.print("This is a demo text");
  lcd.setCursor(8,3);  // Set the cursor at the 9th column and 4th row
  lcd.print("****");
delay(3000);
lcd.clear(); 
analogReference(INTERNAL);  // Встановлення опорної напруги АЦП 1,1В

  Serial.begin(115200);

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

void loop () {
  DateTime now = rtc.now();
   lcd.setCursor(0, 0);
   lcd.print(now.year(), DEC);
   lcd.print('/');
   lcd.print(now.month(), DEC);
   lcd.print('/');
   lcd.print(now.day(), DEC);
   lcd.print("   ");
   //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);

int Xray0 = analogRead(A0);
float voltage = Xray0 * (1.1 / 1024.0)*1000;
lcd.setCursor(0, 1);
Serial.println(voltage);

if(digitalRead(pinBregg) == HIGH)      // если кнопка нажата
      {         AngleBregg++;      }
  else                                // иначе
      {
        //digitalWrite(LedPin,LOW);         // светодиод отключаем
      }
if(AngleBregg>40)
       {         AngleBregg =10;       }
  
//if(digitalRead(pinDay)==HIGH)
//{ setTime(-1, -1, -1, 1, -1, -1);}

if (digitalRead(pinYear) == HIGH) {
  Y = now.year();  
if(Y>2030) { Y = 2022 ;}
	rtc.adjust(DateTime(Y+1, now.month(), now.day(), now.hour(), now.minute(), 0));
  }

if (digitalRead(pinMonth) == HIGH) {
 	rtc.adjust(DateTime(now.year(), now.month()+1, now.day(), now.hour(), now.minute(), 0));
  }
if (digitalRead(pinMonth) == HIGH) {
 	rtc.adjust(DateTime(now.year(), now.month()+1, now.day(), now.hour(), now.minute(), 0));
  }
if (digitalRead(pinDay) == HIGH) {
 	rtc.adjust(DateTime(now.year(), now.month(), now.day()+1, now.hour(), now.minute(), 0));
  }
if (digitalRead(pinHour) == HIGH) {
 	rtc.adjust(DateTime(now.year(), now.month(), now.day(), now.hour()+1, now.minute(), 0));
  }
if (digitalRead(pinMinute) == HIGH) {
 	rtc.adjust(DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute()+1, 0));
  }

lcd.print(voltage);
lcd.print(':');
lcd.print(AngleBregg);

  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();


  Serial.println();
  delay(50);
}