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.
So, as Clive1 said, use an ST-Link with the ST-Link Utility to clear the RDP.
You can probably also do that with a Segger JLink ...