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Uwe Bonnes
Uwe Bonnes
Chief
May 18, 2026
Question

C5: Is BL_COM_CFG documented?

  • May 18, 2026
  • 2 replies
  • 110 views

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?

    2 replies

    mƎALLEm
    mƎALLEm
    Technical Moderator
    May 18, 2026

    Hello,

    Do you mean the details of these bits?

    mALLEm_0-1779105212541.png

     

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    Uwe Bonnes
    Uwe BonnesAuthor
    Chief
    May 18, 2026

    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.

      mƎALLEm
      mƎALLEm
      Technical Moderator
      May 18, 2026

      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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      mƎALLEm
      mƎALLEm
      Technical Moderator
      May 18, 2026

      @Uwe Bonnes 

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

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