STM32C071RBT6 RTC Clock configuration is blocked

AndrewFFFF · ‎2025-03-31

Originally a reply here, but seems to be a new question.

Thank you, i worked in "Clock Configuration", but RTC is locked . It means for this MCU works only with internal clock for RTC?

Andrew Neil · ‎2025-03-31

@AndrewFFFF wrote:
Thank you, i worked in "Clock Configuration", but RTC is locked .

So are you talking about the system clock, or the clock for the RTC ?

RTC should be able to run from an internal or external source:

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

AndrewFFFF · ‎2025-03-31

Here the screenshoot

Andrew Neil · ‎2025-03-31

So this is a new question about the RTC clock configuration.

Have you enabled the RTC itself?

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

waclawek.jan · ‎2025-03-31

What do you mean by "RTC is locked"?

What are the expected behaviour and how does the observation differ from it?

How is the screenshot you've posted relevant to this question?

JW

Andrew Neil · ‎2025-03-31

The RTC part of the screenshot all looks greyed-out - I guess that's what he means by "locked" ?

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.