Alarm waking up befor 1 Min when after 2 or 3 days

Kai_Satone · ‎2025-01-28

i am using stm32f41ceu6 with RTC and RCC in that we are using LSE with 100HZ
if i set Alarm for 1H or more then still working but after 2 or 3 days it wakeup early befor one Min
example i set alarm at 11:30 then it will wakeup after one hour that time after 2 or 3 days wakeup day 11:29
there need of any other calibration or any other solution

SofLit · ‎2025-01-28

Hello,

You need to calibrate the RTC. Review this article.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.
PS:
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2 - Please be polite in your reply. Otherwise, it will be reported as inappropriate and you will be permanently blacklisted from my help.

View solution in original post

SofLit · ‎2025-01-28

Hello,

You need to calibrate the RTC. Review this article.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.
PS:
1 - This is NOT an online support (https://ols.st.com) but a collaborative space.
2 - Please be polite in your reply. Otherwise, it will be reported as inappropriate and you will be permanently blacklisted from my help.

Kai_Satone · ‎2025-01-28

thank you sir