Hello everyone!
Hardware MCU is STM32WB5MMGH
I'm trying to set the MCU in shutdown mode in a complex project, but failing. And with "failing" i mean the code still execute even after the shutdown command run. So the MCU it's not entering shutdown mode.
I've translated the single feature to a new blank project, with just the necessary code for the shutdown feature. And this is the int main :
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();
/* Configure the peripherals common clocks */
PeriphCommonClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_RTC_Init();
/* USER CODE BEGIN 2 */
HAL_PWREx_ClearWakeupFlag(PWR_FLAG_WUF1);
HAL_PWREx_EnterSHUTDOWNMode();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
HAL_Delay(250);
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
No radios (Core2), nor IWDG at all.
The HAL_PWREx_EnterSHUTDOWNMode also suggest that something is not working, because after the command call, it goes istantly on the CLEAR_BIT line.
void HAL_PWREx_EnterSHUTDOWNMode(void)
{
/* Set Shutdown mode */
MODIFY_REG(PWR->CR1, PWR_CR1_LPMS, PWR_LOWPOWERMODE_SHUTDOWN);
/* Set SLEEPDEEP bit of Cortex System Control Register */
SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
/* This option is used to ensure that store operations are completed */
#if defined (__CC_ARM)
__force_stores();
#endif /* __CC_ARM */
/* Request Wait For Interrupt */
__WFI();
/* Following code is executed after wake up if system didn't go to SHUTDOWN
* or STANDBY mode according to power policy */
/* Reset SLEEPDEEP bit of Cortex System Control Register */
CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
}
Anyone else experienced the same problem ?
