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

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4
const int button1   =  9;                   // button1 pin number
const int button2   = 10;                   // button1 pin number
const int button3   = 11;                   // button1 pin number
const int alarm_pin = 12;                   // Alarms pin number

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);
bool alarm1_status, alarm2_status;
char Time[]     = "  :  :  ",
     calendar[] = "      /  /20  ",
     alarm1[]   = "A1:   :  :00", alarm2[]   = "A2:   :  :00",
     temperature[] = "T:   .   C";
byte  i, second, minute, hour, day, date, month, year,
      alarm1_minute, alarm1_hour, alarm2_minute, alarm2_hour,
      status_reg;
 
void setup() {
  // Init
  lcd.init();
  lcd.backlight();
   pinMode(9,  INPUT_PULLUP);
  pinMode(10, INPUT_PULLUP);
  pinMode(11, INPUT_PULLUP);
  pinMode(12, OUTPUT);
  digitalWrite(alarm_pin, LOW);
  // set up the LCD's number of columns and rows
  lcd.begin(20, 4);
  Wire.begin();                                 // Join i2c bus
  //attachInterrupt(digitalPinToInterrupt(2), Alarm, FALLING);

  // Print something
  lcd.setCursor(3, 0);
  lcd.print("Hello, world!");
  lcd.setCursor(2, 1);
  lcd.print("Wokwi Online IoT");
  lcd.setCursor(5, 2);
  lcd.print("Simulator");
  lcd.setCursor(7, 3);
  lcd.print("Enjoy!");
}


void loop() {
}