topic S32K344 resets every three days or RTC system clock returns to initial value every three days in S32K

S32K344 resets every three days or RTC system clock returns to initial value every three days

SCoder41 — Tue, 18 Mar 2025 08:20:56 GMT

(S32K344) I implemented a function where the RTC system clock was set to an initial value (2025-3-11 15:25:0), and then the current system time was obtained every 0.5 seconds and stored on the SD card. I tested continuously for 7 days, but after 7 days, I found that the logs in the SD card would return to the initial value of 2025-3-11 15:25:0 every time it reached [2025-3-13, 4:41:57]. Is it because the system reset or is it just an issue with RTC?

Re: S32K344 resets every three days or RTC system clock returns to initial value every three days

Julián_AragónM — Tue, 18 Mar 2025 23:01:43 GMT

Hi @SCoder41,

Just from the log, I am unable to pinpoint if the issue is mainly the RTC or the MCU. Could you share the code (either here, or by a private message). If not, could you share exactly what the code does?

Also, if the reset source is not a SW reset, (i.e. hardware reset), the counter value will be reset. You must configure either SIRC or SXOSC, and perform SW reset to avoid resetting the counter: Solved: Does the S32K312 RTC support system time keeping at reset? - NXP Community

Best regards,
Julián

Re: S32K344 resets every three days or RTC system clock returns to initial value every three days

SCoder41 — Wed, 19 Mar 2025 01:30:35 GMT

My code size exceeds 25MB, is there any other way to send it to you?

Re: S32K344 resets every three days or RTC system clock returns to initial value every three days

SCoder41 — Wed, 19 Mar 2025 02:30:22 GMT

I have sent you the code via private message.