Read Protection Problem

[Mert_Serhat_Sarihan]

Hello. I have an STM32F407 Discovery Board. I have been using the same board for years. Last time i used it i was experimenting a speed control of a DC Motor which i had done it many times. After i started debug mode my board strangely shut down and stopped debug mode. Then i was not able to start the debug mode neither  i was able to upload code to it. Then i tried to erase registers from Cube Programmer. I failed to do. I do not understand what happend my board, for that reason i uploaded some screenshots of Cube Programmer so that you can see what is going on.

Can someone please help me ?

[Issamos]

Hello @Mert_Serhat_Sarihan 

Setting the RDP to 0xFF means that the level1 of read protection is activated. To desactivate this protection you have to change the RDP value to 0xAA and retry. For more information take a look at the part 3.7.3, 3.7.4 and 3.7.5 of the RM0090.

Best regards.

II

[Mert_Serhat_Sarihan]

I am unable to do that. The MCU does not respond when i try to make changes.