Hi, I want to program the brownout in code:
void setBrownout (uint32_t level) {
FLASH_OBProgramInitTypeDef OBInit;
HAL_FLASHEx_OBGetConfig(&OBInit);
if (OBInit.BORLevel == 0) { // not programmed yet
OBInit.BORLevel = level;
OBInit.OptionType = OPTIONBYTE_BOR;
if(HAL_FLASH_Unlock() == HAL_OK) {
if(HAL_FLASH_OB_Unlock() == HAL_OK) {
// if(HAL_FLASHEx_OBErase() == HAL_OK) {
HAL_FLASHEx_OBProgram(&OBInit);
if(HAL_FLASH_OB_Lock() == HAL_OK) {
HAL_FLASH_Lock();
HAL_FLASH_OB_Launch();
}
// }
}
}
}
HAL_FLASHEx_OBGetConfig(&OBInit); // check
}
I see all FLASH registers being updated. HAL_FLASH_OB_Launch() waits until the busy flag is cleared, but this flag isnt even set. Readout of the BORLevel stays zero.
What am i missing?
Dig
