After altering BOOT_ADD0 and BOOT_ADD1, can't connect to chip

gnaugs · ‎2024-01-09

Hi,

I made a custom board that uses a STM32H747IGT6 but left the BOOT0 pin floating. In order to ensure that the chip would execute the code that was flashed to the user memory I altered the BOOT_ADD1 to be the same as BOOT_ADD0 (for both the M7 and M4 cores). I read that this could be a workaround until I print an updated board. I was able to connect to the STM within a minute of changing those address bits but now I am unable to connect to the chip anymore (I'm using SWD w/ STLinkMinieV3).

Is there anything I can do to connect to the chip again or is it bricked :(

FBL · ‎2024-01-10

Hello @gnaugs

Could you connect via USB port. If DFU bootloader installed, you may be able to access the bootloader by holding down BOOT0 pin while resetting the chip.

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