stm32 bor example
#define BOR_LEVEL_MASK ((uint32_t)0x0000FF00)
#define BOR_LEVEL_1_7V ((uint32_t)0xF800)
#define BOR_LEVEL_2_0V ((uint32_t)0xF900)
#define BOR_LEVEL_2_2V ((uint32_t)0xFA00)
#define BOR_LEVEL_2_5V ((uint32_t)0xFB00)
#define BOR_LEVEL_2_8V ((uint32_t)0xFC00)
/*
* chnage the brown out reset to another level
* device stm32l4
* whne the bor chnage the MCU reset, for the second time will not enter to the function because already saved
* By ABDERAHMAN HAOUDI
*/
uint8_t changeBrownOutReset(uint32_t bor_level){
FLASH_OBProgramInitTypeDef pOBInit;
HAL_FLASHEx_OBGetConfig(&pOBInit);
if((pOBInit.USERConfig & BOR_LEVEL_MASK) != BOR_LEVEL_2_2V){ //0xFFBFFB00
HAL_FLASH_Unlock();
///__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_OPTVERR);
HAL_FLASH_OB_Unlock();
pOBInit.OptionType = OPTIONBYTE_USER;
pOBInit.USERType = OB_USER_BOR_LEV;
pOBInit.USERConfig = bor_level;
//FLASH_OB_UserConfig(pOBInit.USERType, pOBInit.USERConfig);
if(HAL_FLASHEx_OBProgram(&pOBInit) != HAL_OK){
return 0;
}
HAL_FLASH_OB_Launch();
HAL_FLASH_OB_Lock();
HAL_FLASH_Lock();
return 1;
}else return 0;
}