Posted on June 01, 2018 at 07:55
Hi all,
The following problem is appearing
changing
sectors write protection and
power disappearing in the middle of a HAL_FLASH_OB_Launch operation. After the next power up, flash options are reset with RDP = 1 and all sectors are read / write protected with SPRMOD enabled (PCROP protected sectors).
So the mcu is totally inoperative, the cpu is not able to load the interrupt vector through flash D-Bus
.The starting situation is:
If power cycle the board repeatedly, chaining sector write protection operations, these are the flash options after some resets:
Anyone can confirm that this behavior is correct?
Is there any way to mitigate this problem?
Thanks,
#flash-corrupt #stm32-f4 #flash-api