AnsweredAssumed Answered

Failed to erase an STM32F779NIH6 MCU

Question asked by Julien M on Jul 19, 2017
Latest reply on Aug 1, 2017 by Julien M

Hello everybody,

 

I have some trouble when I want to erase my chip by  sector erase  or mass erase (ST LINK UTILITY with ST LINK dongle)   I obtain  some  dummy bytes after an erase operation like that :

 

 

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 00 00 00 00 00 00 00 00 3C 29 00 08 29 21 00 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF BD 3B 00 08 BD 3B 00 08 00 00 00 00 BD 3B 00 08 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF BD 3B 00 08 BD 3B 00 08 00 00 00 00 BD 3B 00 08 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF BD 3B 00 08 BD 3B 00 08 18 08 00 00 BD 3B 00 08 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

 

Can I forget something ?

Normaly is filled by 0xFF ?

When I use this method on a STM32F103 it works well.

 

Of course when I try to put a firmware it become like a random firmware because the flash was not really erased.

 

Do you have some idea to help me ?

 

Thank you so much .

Julien.

Outcomes