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

gnaugs
Associate

‎2024-01-09 05:59 PM

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

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FBL
ST Employee

‎2024-01-10 01:40 AM

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.

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.

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