Unlocking flash memory

[dooz]

Posted on September 18, 2015 at 12:46

I accidentaly  did something bad to my flash memory on stm32f3. I tried to disable the write protection to the whole flash but in the result now I have the whole flash write protected and cant debug any program ( I checked it using st-link utility). Is there anyway to fix it?

Regards

[Nesrine M_O]

Posted on September 18, 2015 at 14:21

Hi oziom.dominik,

If you are at Level2, unfortunately nothing can be done: Memory read protection Level 2 is an irreversible operation. When Level 2 is activated,the level of protection cannot be decreased to Level 0 or Level 1.If you are in level 1: you can use STM32 ST-LINK Utility: Target > Option Bytes to modify protection -Syrine –

[dooz]

Posted on September 18, 2015 at 14:46

Thanks for fast answer. Good for me it wasn't a level 2.  Changing Data 0(H) value to 0x00 in option bytes settings solved the problem.

Regards Dominik O.

[Nesrine M_O]

Posted on September 18, 2015 at 14:55

It is good to hear that it was solved.

-Syrine –