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Hi all,
I'm currently working on stm32f4xx controller, i need to protect the flash memory, so i used RDP as stated below, its worked and flash memory was not readable, but after that i was not able to re-program the flash using ULINK Pro or Ulink Me, can you please suggest best way to overcome this.
//HAL_FLASH_Unlock(); HAL_FLASH_OB_Unlock(); FLASH_RDP.RDPLevel = OB_RDP_LEVEL_1; FLASH_RDP.OptionType = OPTIONBYTE_RDP; HAL_FLASHEx_OBProgram(&FLASH_RDP); HAL_FLASH_OB_Launch(); HAL_FLASH_OB_Lock(); HAL_FLASH_Lock();
Thanks.
Isn't that exactly what setting RDP is supposed to do?
Please follow the instructionsfor posting source code:
www.danlhenry.com/.../keil_code.png
You could play with the connectivity options and Flash->Erase to do a mass erase.
You might need to use ST-LINK + Utilities, or J-LINK with external JlinkSTM32.EXE to unlock STM32 parts. The DFU or Flash Demonstrator might be effective.
I'd have complementary code so I could Nuke the part from orbit...
It is critically important that you are sharper than the people who might hack your device