Help, How to set Read protection in STM32F207

[jun_01]

Posted on August 18, 2011 at 07:34

use API set the RDP to Level_2 :

if ((*(__IO uint8_t*)(OPTCR_BYTE1_ADDRESS) != (uint8_t)OB_RDP_Level_2))

 {

  FLASH_OB_Unlock();

  FLASH_OB_RDPConfig(OB_RDP_Level_2);

  FLASH_OB_Lock();

}

and read value from OPTCR_BYTE1_ADDRESS, send it to USART, make sure the RDP value has changed to 0xCC already.

but , why RDP no effect, the code can be read out by ''Flash Loader Demonstrator'' ?

How to protect code by program to prevent code is read out  ?

[root]

Posted on August 18, 2011 at 15:06

Hello,

My code to change write protection ...

// disables write protection on sector 4 and 5.

FLASH_OB_Unlock();

FLASH_OB_WRPConfig(OB_WRP_Sector_4, DISABLE);

FLASH_OB_WRPConfig(OB_WRP_Sector_5, DISABLE);

if (FLASH_OB_Launch() != FLASH_COMPLETE)

return False;

FLASH_OB_Lock();

It seems you are missing the FLASH_OB_Launch() step.

Thomas.

[jun_01]

Posted on August 18, 2011 at 15:29

thank you very much!

I will test tomorrow.