Alarm

Projects Programming
2

It seems i make some mistake writing.... nevermind

I have a strange problem with alarm code.
After 20 or so times my alarm stop working from unknown reason...
Can anybody have some idea?

here is the code:

 #include <Wire.h>
#include "RTClib.h"
#include <Time.h>
#include <TimeAlarms.h>

RTC_DS1307 rtc;

time_t syncProvider()     //sinhro vremena, funkcija radi isto što i RTC_DS1307::get()
{
  return rtc.now().unixtime();
}

int led = 13;

void setup()
{
Serial.begin(9600);
Serial.println("One timer is triggered every 15 seconds");
Serial.println();

pinMode(led, OUTPUT);

rtc.begin(); 
  setSyncProvider(syncProvider);
  Alarm.timerRepeat(15, RepeatTask);
}

void loop()
{
digitalClockDisplay();
Alarm.delay(1000);
}

void RepeatTask()
{
Serial.println("15 second timer");
  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);               // wait for a second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);
}

void digitalClockDisplay()
{
// digital clock display of the time
Serial.print(hour());
printDigits(minute());
printDigits(second());
Serial.println();
}

void printDigits(int digits)
{
// utility function for digital clock display: prints preceding colon and leading 0

Serial.print(":");
if(digits < 10)
Serial.print('0');
Serial.print(digits);
}