#include <Keypad.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "RTClib.h"
LiquidCrystal_I2C lcd(0x27,20,4);
RTC_DS1307 rtc;
const byte KEYPAD_ROWS = 4;
const byte KEYPAD_COLS = 4;
byte rowPins[KEYPAD_ROWS] = {2,3,4,5};
byte colPins[KEYPAD_COLS] = {A0,A1,A2,A3};
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'},
};
Keypad keypad = Keypad(makeKeymap(keys),rowPins,colPins,KEYPAD_ROWS,KEYPAD_COLS);

void setup() {
    pinMode(6, OUTPUT);
    LiquidCrystal_I2C lcd(0x27,20,4);
    lcd.init();
       if(! rtc.begin()){
         Serial.println("----");
         Serial.flush();
         abort();
       }
}

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

    lcd.setCursor (2,0);
    lcd.print(now.hour(),DEC);
    lcd.print(':');
    lcd.print(now.minute(),DEC);
    lcd.print(':');
    lcd.print(now.second(),DEC);
    lcd.print("");

    LiquidCrystal_I2C lcd(0x27,20,4);
    char key  = keypad.getKey();
    if(key=='1'){digitalWrite(6, HIGH);lcd.setCursor(0,2);lcd.print("LED ON");}
    if(key=='2'){digitalWrite(6, LOW);lcd.setCursor(0,2);lcd.print("LED OFF");}

}