flash write protected

[vijayaporeddy]

Posted on October 11, 2012 at 09:59

Hi,

my stm32f205ze controller become write protected,when i am trying to program its flash option bytes i was written all sectors write protect command. now i am unable to load the program now.what i can do to remove write protection can any one help me to come out of this..

thanks,

santhi

[vijayaporeddy]

Posted on October 11, 2012 at 11:01

my problem is solved. from st-link utility i have changed option bytes values.now i am able to program normally.

[frankmeyer9]

Posted on October 11, 2012 at 11:28

You need to take care what you write to the option bytes

If the values are not complementary, the uC defaults to RP level 1, which is obviously not what you want. Better check the specification again.