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DavePfz
Senior
October 16, 2026
Question

Problem loading STM32WB5MM RTC prescalers

I have used STM32CubeMX to change the prescalers in the STM32_WPAN section. However, the code itself never uses the new values. It appears that “something” has marked the RTC as already initialized and it won’t execute that code.

How can I force my code to load the new values?

Nite: The values that are being loaded came from when I enabled the BLE code, but it causes the RTC to run too slow.