Hello,
After reading the following threads:
How to program STM32 Option Bytes with the HAL API - STMicroelectronics Community
What are option bytes in STM32 and how do I use th... - STMicroelectronics Community
Problem with option bytes set from program level- ... - STMicroelectronics Community
and the manual:
STM32L41xxx/42xxx/43xxx/44xxx/45xxx/46xxx advanced Arm®-based 32-bit MCUs - Reference manual
I tried to stop the watchdog in the STM32G030C8TX under low power MCU modes, by adjusting the option bytes accordingly using the following examples of the HAL library but I get hardware faults. What am I missing?
HAL_StatusTypeDef set_OB(void) {
FLASH_OBProgramInitTypeDef OB;
HAL_FLASHEx_OBGetConfig(&OB);
HAL_FLASH_Unlock();
HAL_FLASH_OB_Unlock();
OB.OptionType = OPTIONBYTE_USER;
OB.USERType = OB_USER_IWDG_STOP;
OB.USERConfig = OB_IWDG_STOP_FREEZE;
if ( HAL_FLASHEx_OBProgram(&OB) != HAL_OK )
{
HAL_FLASH_OB_Lock();
HAL_FLASH_Lock();
return HAL_ERROR;
}
HAL_FLASH_OB_Launch();
/* We should not make it past the Launch, so lock
* flash memory and return an error from function
*/
HAL_FLASH_OB_Lock();
HAL_FLASH_Lock();
return HAL_ERROR;
}
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
set_OB();
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_DMA_Init();
MX_USART1_UART_Init();
MX_ADC1_Init();
MX_RTC_Init();
MX_TIM16_Init();
MX_IWDG_Init();
/* USER CODE BEGIN 2 */
Application(); // Call Application
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
