RTC drift adjustment and calibration

stm32duino / STM32RTC

Arduino RTC library for STM32.

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RTC drift adjustment and calibration #34

Closed HamidSaffari closed 4 years ago

HamidSaffari commented 4 years ago

Hi there. I'm using STM32F103 and external 32.768kHz crystal in LSE Mode, but I've seen drifting about 10sec per day, so I wonder how can I calibrate this drift. Also in the RTC_setPrediv(int8_t asynch, int16_t synch) there no definition for STM32F1xx. I found one library which said did something about it: https://github.com/ag88/stm32duino_rtcadj but it works with maple core.

HamidSaffari commented 4 years ago

I think this PR ought do the job.

HamidSaffari commented 4 years ago

why my PR got a style check error? https://github.com/stm32duino/STM32RTC/pull/38