When i read my time alarm it outputs not what i set it as

Using Arduino Programming Questions
1

here is the repositry becouse the code base is big.

This all happens in the src/classes.times_manager.hpp

I set one of the alarms to 00:00 and the other to 14:39 (on line 4, timestate constructor, movetimes constructor), but when I read them with Alarm.read() in the begin method they both return 6:28.

I use an esp32s3 and platformio

2

Then can you create an MCVE? Oftentimes you'll find your own problem in the process.

3

Hmm, i have never heard of a MCVE, I'll try to create one

4

here is the MCVE, it still dose the same thing:

#include <TimeLib.h>
#include <TimeAlarms.h>
#include <Arduino.h>

void alarm_callback()
{
  Serial.println("did something");
}

void setup()
{
    Serial.begin(115200);
    Alarm.delay(100);
    tmElements_t tm;
    tm.Hour=7;
    tm.Minute=34;
    int alarmID=Alarm.alarmRepeat(0, alarm_callback);
    Alarm.write(alarmID,makeTime(tm));
    breakTime(Alarm.read(alarmID),tm);
    Serial.println(tm.Hour);
    Serial.println(tm.Minute);
}

void loop()
{

}

the serial output is:

6
28

instead of:

7
34
5

Is this the output always, or a sample of that single compile? Are you setting and expecting an alarm and the code is giving you a time or a length of time until the alarm?

6

It gave me the same output in both the mcve and the full codebase, over multiple compiles. There is a lack of documentation for these functions, so i am asuming, the library is called 'TimeAlarms' by paul stoffregen

7

I think tmElements_t is from TimeAlarms.h. I read that in the examples and .CPP in the libraries.

8

If you set the time in TimeLib, and populate all the fields in your tm struct with valid values, your code produces what you are expecting to see.

Replace

    tm.Hour=7;
    tm.Minute=34;

with

    setTime(13, 5, 0, 25, 12, 2023);
    breakTime(now(), tm);
    tm.Hour=7;
    tm.Minute=34;

and you'll get your expected output.

9

tanks this worked

10

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