I want to use the FLASH bank-swap feature of the STM32H753 for custom firmware updates.
I have no problem erasing and programming FLASH bank 2 when running from bank 1 but I get a double bus fault when attepting to erase a sector in bank 1 when running from bank 2.
I check SWAP_BANK in FLASH_OPTCR before erasing to determine which bank is currently being run from. I've double checked with STM32Programmer to make sure I'm running from bank 2 and have single stepped in CubeIDE to verify I'm attempting to erase sector 0, bank 1.
Has any one else come across this ?
Thanks
Dave
