It has 32.768KHz RTC crystal and RTC battery.
I am using library https://github.com/stm32duino/STM32RTC
And set to LSE clock
Code: Select all
rtc.setClockSource(STM32RTC::LSE_CLOCK);
How to calibrate the RTC?
Code: Select all
rtc.setClockSource(STM32RTC::LSE_CLOCK);