HELLO! STM32L051R8T6 it has a problem with the initialization of the LSE / LSI clock？

锋赵.1 · ‎2023-05-16

After the analysis, we know that the processor in the system is powered by a battery voltage of 3.6 V and cyclically/after meeting certain conditions, it goes into Standby mode. It is woken up by the wakeup pin. After waking up, the processor correctly enters the normal operating mode, but it has a problem with the initialization of the LSE / LSI clock, which makes it impossible to continue the program - the program hangs.

Peter BENSCH · ‎2023-05-16

Welcome, @锋赵, to the community!

Well, apart from a description of the problem, the photo and the value of the supply voltage, you have not provided any information such as the layout of the LSE, possibly HSE or the relevant programme section (initialisation, wake-up etc), so it is unlikely that anyone can make a statement about the cause.

Regards

/Peter

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