Solved: C5: Is BL_COM_CFG documented? - STMicroelectronics Community

C5 implements a way to de-activate selected boot devices. This will allow to use the system bootloader on custom board were some activity on pins used by the bootloader but not used for the bootloader would inhibit use of the bootloader. This feature has been requested before and is very welcome.

However neither in RM0522 nor in AN2606 I find the explanation for the fifferent bits. Did I miss something?

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Hello @Uwe Bonnes ,

These are the BL_COM_CFG bit description versus the device used:

Does it answer your question?

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Hello,

Do you mean the details of these bits?

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Yes.
The table tells "Note: For assignment of interfaces to register bits, see the bootloader documentation."
I did not find a bootloader documentation explaining the bits.

Question raised internally over this internal ticket CDM0062722.

I'll get back to you as soon as I have a feedback.

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Thank you for accepting the post as solution but I prefer to unmark it until I provide an answer.

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.

Hello @Uwe Bonnes ,

These are the BL_COM_CFG bit description versus the device used:

Does it answer your question?

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.