方法1：代碼解密

FLASH_OBProgramInitTypeDef OBInit;

__HAL_FLASH_PREFETCH_BUFFER_DISABLE();

HAL_FLASHEx_OBGetConfig(&OBInit);

if(OBInit.RDPLevel ！= OB_RDP_LEVEL_0)

{

OBInit.OptionType = OPTIONBYTE_RDP;

OBInit.RDPLevel = OB_RDP_LEVEL_0;

(void)HAL_FLASH_Unlock();

(void)HAL_FLASH_OB_Unlock();

(void)HAL_FLASHEx_OBProgram(&OBInit);

(void)HAL_FLASH_OB_Lock();

(void)HAL_FLASH_Lock();

}

__HAL_FLASH_PREFETCH_BUFFER_ENABLE();

方法2：STVP 命令行解密

• 1）配置后save as unlock.hex

• 2）通過stvp界面或命令行燒寫OPTION BYTE（unlock.hex）

STVP_CmdLine -port=USB -BoardName=ST-LINK -Device=stm32L073xB -ProgMode=SWD -progress -no_warn_protect -no_loop -FileOption=unlock.hex

文章整合自：CSDN

編輯：ymf