Not possible to activate MRSUBG with LSI in CubeMX for STM32WL33

KarthikGo · ‎2025-02-10

- MRSUBG is disabled in CubeMX if i disable LSE ,

- CubeMX allows me to use MRSUBG only if i enable LSE. Is that possible to use MRSUBG with LSI ?

STTwo-32 · ‎2025-02-11

Hello @KarthikGo and welcome to the ST Community.

You can use the MRSUBG without any need to enable the LSE. The HSE is the only mandatory to use the MRSUBG radio since the accuracy is needed). So, the LSE is not an obligation, and you can use LSI. This STM32CubeMX wrong behavior is reported internally for correction on the Future (under internal ticket number 201372).

PS: Issue solved on the last release of the STM32CubeMX

Best Regards.

STTwo-32

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STTwo-32 · ‎2025-02-11

Hello @KarthikGo and welcome to the ST Community.

You can use the MRSUBG without any need to enable the LSE. The HSE is the only mandatory to use the MRSUBG radio since the accuracy is needed). So, the LSE is not an obligation, and you can use LSI. This STM32CubeMX wrong behavior is reported internally for correction on the Future (under internal ticket number 201372).

PS: Issue solved on the last release of the STM32CubeMX

Best Regards.

STTwo-32

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

KarthikGo · ‎2025-02-13

Hi !

Thanks for the feedback !

So what is the work around for this issue ! should we enable LSE in Cube MX in order to activate the MRSUBG , then after code generation disable LSE by change the code manually?

Regards

//Karthik