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jlecl.1
jlecl.1
Associate III
April 9, 2025
Question

STM32 custom Bootloader

  • April 9, 2025
  • 2 replies
  • 1397 views

Dear community,

My device is a logger. the configuration is over USB (UART vcp) via a web interface.
i'm able to connect it, to configure it and store data correctly.
i'm using a stm32L05x (whithout embeded DFU) and ,important, no external reset button.

My aim is to propose a firmware update over the webpage (device already connected).
what do you propose to me for my need.
do you have a experience, example or website to explain me the right way to do that .

my reseach , give me a pyserial could be a good way for the webinterface.
but what about the firmware update ?



 

 

2 replies

Andrew Neil
Andrew Neil
Super User
April 9, 2025

https://community.st.com/t5/stm32-mcus-embedded-software/stm32g0b1ret6-fota-update-through-uart/m-p/790491/highlight/true#M61959

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.
    jlecl.1
    jlecl.1Author
    Associate III
    April 9, 2025

    thanks for your rapid reply.

    My post is because i'm not conformable with a system of Two App and bootloader ( i think is the good reflexion)
    i' ve seen all document, the theory is seem to be clear but in pratice is often different.
    do you have an example for trying, to sur that is work as i want before modified it for my STM32xx ?

    Andrew Neil
    Andrew Neil
    Super User
    April 9, 2025

    Pardon?

    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.
    Pavel A.
    Pavel A.
    Super User
    April 10, 2025

    > My device is a logger.

    Logger to what? Is there some external flash chip or SD card that can be used to stage the update?

     

     

      jlecl.1
      jlecl.1Author
      Associate III
      April 10, 2025

      Exact, it's another way.
      My logger is a ultra tiny things ( 11mm x17mm, micro USB port included), so no sdcard BUT there is a NAND flash onboard .
      my reseach last night with me some example of "IAP" update.
      more news after try this week.

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