RTC losing time
RTC losing time
Yesterday I get the VBat pin working properly but overnight the RTC loose 8 minutes! There is any way to solve that problem?
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Re: RTC losing time
https://github.com/rogerclarkmelbourne/ ... issues/572
PDF: https://www.st.com/resource/en/applicat ... ronics.pdf
PDF: https://www.st.com/resource/en/applicat ... ronics.pdf
commented on Nov 5, 2018
... I have 6 STM32F103C8 units and have tested them all with the same sketch. 3 run slow, two run fast and one seems to be keeping step with the DS3232 RTC. Strikes me it's a variation in crystal frequency and not the RTClock library.
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Re: RTC losing time
If you use built-in RTC and board like blue pill, then remove PC14 and PC15 pins.