2024-12-02 09:50 PM
Hello everyone, I am using an internal RTC on STM32L431. After running for 23:59:59 seconds, the time changes to 24:00:00 instead of 00:00:00, and the week day has not been incremented. Why is this?
2024-12-03 02:21 AM
Hello @AlfRomeo,
Is the RTC correctly configured to use the 24-hour format?
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2024-12-03 02:23 AM
As @Sarra.S said above, you probably have set the RTC inadvertently to 12 hour format, probably because of uninitialized struct when calling Cube/HAL functions setting time.
JW
2024-12-03 04:09 PM
The format of the hour is still 24 hours, and I haven't changed it
2024-12-04 02:00 AM
Does the RTC continue with 24:01 ? Otherwise, where is the problem?
2024-12-04 02:05 AM
@Uwe Bonnes wrote:Otherwise, where is the problem?
Otherwise, where is the problem?
24:00 is never a valid time - it should go from 23:59:59.999 to 00:00
2024-12-04 02:06 AM
@AlfRomeo wrote:The format of the hour is still 24 hours, and I haven't changed it
Did you follow @waclawek.jan's link - to details about the issues with uninitialised or incompletely-initialised config structures?
2024-12-04 02:09 AM
> The format of the hour is still 24 hours, and I haven't changed it
Read out and check/post the RTC registers content.
