Flash RDP activate

[RE11]

Hello everyone, 

I have board and I used STM32G071 MCU on this board. I want to activate RDP Level 1. There is my code: 

void SysCodeProtection( void )

{

FLASH_OBProgramInitTypeDef pOBInit = {0};

HAL_FLASHEx_OBGetConfig( &pOBInit );

if ( pOBInit.RDPLevel != OB_RDP_LEVEL_1 )

{

HAL_FLASH_Unlock();

HAL_FLASH_OB_Unlock();

pOBInit.OptionType = OPTIONBYTE_RDP;

pOBInit.RDPLevel = OB_RDP_LEVEL_1;

HAL_FLASHEx_OBProgram( &pOBInit );

HAL_FLASH_OB_Launch();

HAL_FLASH_OB_Lock();

HAL_FLASH_Lock();

}

}

I'm programming my MCU on ST-LINK with ST-LINK Utility. But sometimes after I programmed my MCU It's locking or crushing. My power LED is not working on my board and I can't connect my board. I lost many boards after activate RDP If I disable RDP I didn't see any problems. Can anyone help me about it ?

[Diane POMABIA]

Internal ticket number:156398 (This is an internal tracking number and is not accessible or usable by customers).

[JakubK]

Hi,

I encounter the similar problem at STM32L422CB. When I set OB_RDP_LEVEL_1 and then call HAL_FLASH_OB_Launch the MCU does not boot anymore. When setting OB_RDP_LEVEL_0 there is no problem. I have not tried OB_RDP_LEVEL_2.
Surprisingly, when I set the OB_RDP_LEVEL_1 without calling HAL_FLASH_OB_Launch but doing a manual power off-on, there is no problem at all and everything works as it should.
I guess the problem is the HAL_FLASH_OB_Launch procedure.
I hope it may be helpful.

Regards.