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GenuineDeveloper
GenuineDeveloper
Associate III
July 27, 2018
Question

How to recover bricked STM32F051R8T6(STM32F0 discovery)?

  • July 27, 2018
  • 4 replies
  • 847 views

My device is STM32F051R8T6, the same used in STM32F0 discovery board.

I was tweaking with the clock configuration section to try different clock configurations like HSI and HSE, etc. I could erase, flash and verify the program successfully, however the output doesn't seem to work as expected. So, i tried a simple GPIO pin toggle in program and flashed it successfully to the chip, still the output didn't change/work at all. I flashed the same program into my stm32f0 discovery board and the output worked fine. What might have happened to the STM32F051R8 chip? I guess I might have bricked the device, because of the clock tweaks.

How do I resolve this issue? How do I prevent this from happening in the future.

Any valid inputs will be of great help.

Thanks.

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    4 replies

    GenuineDeveloper
    GenuineDeveloperAuthor
    Associate III
    July 27, 2018

    A quick update!

    The program works fine when in debug mode. But as soon as I stop the debugger, the program stops executing. What could be the problem?

    T J
    T J
    Senior III
    July 27, 2018

    is Boot0 low or High ?

    I tie it low with 10K, to always boot from user flash

    T J
    T J
    Senior III
    July 27, 2018

    in Visual studio, if I stop debugging, the Processor is locked at stop or break, I guess.

    I have to power off to release the SWD, then the board reboots from user flash when the power is reapplied.

    GenuineDeveloper
    GenuineDeveloperAuthor
    Associate III
    July 28, 2018

    Yes, the BOOT0 pin is pulled low with 10K resistor. I was tweaking the clock configuration, I read somewhere that it can brick the device. Now, does it have anything to do with flash bootloader concept?

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