STM32F103 RDP Configure use HAL

[MagicFly]

my mcu is STM32F103RGT7.

I want to set RDP level to 1 in firmware.

Error occurs in HAL_FLASH_OB_Launch().​

Please tell me what to do.

The following sources have been used:

HAL_FLASHEx_OBGetConfig(&OptionsBytesStruct);

if( OptionsBytesStruct.RDPLevel != OB_RDP_LEVEL_1 )

{

/* Unlocks the option bytes block access */

HAL_FLASH_Unlock();

HAL_FLASH_OB_Unlock();

OptionsBytesStruct.RDPLevel = OB_RDP_LEVEL_1;

OptionsBytesStruct.OptionType = OPTIONBYTE_RDP;

if( HAL_FLASHEx_OBProgram(&OptionsBytesStruct) != HAL_OK )

{

DEBUG_PRINTF("RDP_WRITE Error\r\n");

/* Error occurred while options bytes programming. **********************/

while( 1 );

}

/* Launch the option byte loading */

HAL_FLASH_OB_Launch();

/* Locks the option bytes block access */

HAL_FLASH_OB_Lock();

HAL_FLASH_Lock();

}

[RKyzn.1]

Hello.

I apologize for the google translation.

Digging into

HAL_FLASH_OB_Launch (); // !!!!!! write OB to Flash and reset !!!!!

it will become visible

/ **
 
  \ brief System Reset
 
  \ details Initiates a system reset request to reset the MCU.
 
 * /
 
__NO_RETURN __STATIC_INLINE void __NVIC_SystemReset (void)
 
{
 
  __DSB (); / * Ensure all outstanding memory accesses included
 
                                                                       buffered write are completed before reset * /
 
  SCB-> AIRCR = (uint32_t) ((0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |
 
                           (SCB-> AIRCR & SCB_AIRCR_PRIGROUP_Msk) |
 
                            SCB_AIRCR_SYSRESETREQ_Msk); / * Keep priority group unchanged * /
 
  __DSB (); / * Ensure completion of memory access * /
 
 
 
  for (;;) / * wait until reset * /
 
  {
 
    __NOP ();
 
  }
 
}

I think it is clear that the system deliberately hangs waiting for a reset.