#include <LiquidCrystal_I2C.h>
#include <RTClib.h>
#include <TaskScheduler.h>

Scheduler runner;

RTC_DS1307 rtc;

LiquidCrystal_I2C lcd(0x27, 16, 2);

int hora;

int minutos;

int segundos;

int buzzerpin = 28;

Task tasca1(0, TASK_FOREVER, []() {
  DateTime now = rtc.now();
  hora=now.hour();
   
  minutos=now.minute();
  segundos=now.second();
  // Display the date & time on the LCD
  lcd.setCursor(6, 1);
  if (hora < 10) {
    lcd.print('0');
  }
  lcd.print(hora, DEC);
  lcd.print(':');
  if (minutos < 10) {
    lcd.print('0');
  }
  lcd.print(minutos, DEC);
  lcd.print(':');
  if (segundos < 10) {
    lcd.print('0');
  }
  lcd.print(segundos, DEC);

  delay(1000);
});


Task tasca2(0, TASK_FOREVER, []() {
if (hora > 12) {
  hora = hora % 12;
}

if (hora == 0){
  hora = 12;
}

Serial.println(hora);  
if ((minutos == 0)&&(segundos == 0)) {

for (int i = 0; i <hora;i++){
  digitalWrite(buzzerpin, HIGH);
  delay(500);
  digitalWrite(buzzerpin, LOW);
  delay(500);
}
}

});


void setup() {
  Serial.begin(115200);
  pinMode(ledpin , OUTPUT ); 
  // SETUP RTC MODULE
  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    while (1);
  }

  // automatically sets the RTC to the date & time on the PC this sketch was compiled
  //rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

  // manually sets the RTC with an explicit date & time, for example, to set
  // January 21, 2021, at 3 am, you would call:
  rtc.adjust(DateTime(2021, 1, 21, 11, 59, 56));

  lcd.init();      // Initialize the LCD
  lcd.backlight(); // Turn on the backlight
  lcd.setCursor(0, 0);
  lcd.print("Time: ");
  runner.init();
  runner.addTask(tasca1);
  runner.addTask(tasca2);
  tasca1.enable();
  tasca2.enable(); 
}


void loop(){
	runner.execute();
}