STM32U575 Bank1 Flashing Problem from Bank2

[SDembededDev]

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.

[NFern.1]

I am facing the same issue. Please share the fix if you have managed to solve this.

[SDembededDev]

Unfortunately I was unable to solve this problem

[rulin]

I am facing the same issue too. Please share the fix if you have managed to solve this.

[NFern.1]

I could not solve it. My other post on the same issue is unanswered by ST.

can't erase correct Flash Bank when attempting to ... - STMicroelectronics Community

[rulin]

有一个点你是否注意到，就是flash擦除时，bank和page这两个参数，这里的bank是指物理bank，与是否从bank2启动无关。