I am trying to do OTA programming modifications using the DUAL bank feature of my STM32U575 IC with 1Mbyte of memory.
I have successfully done this when the program starts in BANK 1 and I reflash BANK 2. I change the User Option byte to OB_SWAP_BANK_ENABLE and the board reboots and successfully runs from BANK 2.
Now, on the next firmware update, programming BANK 1 when I am operating from BANK 2 the HAL_FLASH_Program command fails on the first byte.
The erase code is attached and it is very similar to others I have found on GIT for other products. Does the U5 have an inherent defect?
any help would be greatly appreciated.
