RTC Initialization have a problem.

[ngodoanvan]

Hi

I created my new project follow SubGHz Phy Ping Pong example project. This is my MX_RTC_Init() function:

void MX_RTC_Init(void)
{
 
  /* USER CODE BEGIN RTC_Init 0 */
 
  /* USER CODE END RTC_Init 0 */
 
  RTC_TimeTypeDef sTime = {0};
  RTC_DateTypeDef sDate = {0};
  RTC_AlarmTypeDef sAlarm = {0};
 
  /* USER CODE BEGIN RTC_Init 1 */
 
  /* USER CODE END RTC_Init 1 */
 
  /** Initialize RTC Only
  */
  hrtc.Instance = RTC;
  hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
  hrtc.Init.AsynchPrediv = RTC_PREDIV_A;
  hrtc.Init.SynchPrediv = RTC_PREDIV_S;
  hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
  hrtc.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
  hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
  hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
  hrtc.Init.OutPutPullUp = RTC_OUTPUT_PULLUP_NONE;
  hrtc.Init.BinMode = RTC_BINARY_NONE;
  if (HAL_RTC_Init(&hrtc) != HAL_OK)
  {
    Error_Handler();
  }
 
  /* USER CODE BEGIN Check_RTC_BKUP */
	if(HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR10) != 0x32F2)
	{
  /* USER CODE END Check_RTC_BKUP */
 
  /** Initialize RTC and set the Time and Date
  */
  sTime.Hours = 0x0;
  sTime.Minutes = 0x0;
  sTime.Seconds = 0x0;
  sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
  sTime.StoreOperation = RTC_STOREOPERATION_RESET;
  if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BCD) != HAL_OK)
  {
    Error_Handler();
  }
  sDate.WeekDay = RTC_WEEKDAY_MONDAY;
  sDate.Month = RTC_MONTH_JANUARY;
  sDate.Date = 0x1;
  sDate.Year = 0x0;
  if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BCD) != HAL_OK)
  {
    Error_Handler();
  }
 
  /** Enable the Alarm A
  */
  sAlarm.AlarmTime.Hours = 0x0;
  sAlarm.AlarmTime.Minutes = 0x0;
  sAlarm.AlarmTime.Seconds = 0x0;
  sAlarm.AlarmTime.SubSeconds = 0x0;
  sAlarm.AlarmTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
  sAlarm.AlarmTime.StoreOperation = RTC_STOREOPERATION_RESET;
  sAlarm.AlarmMask = RTC_ALARMMASK_NONE;
  sAlarm.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_NONE;
  sAlarm.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_DATE;
  sAlarm.AlarmDateWeekDay = 0x1;
  sAlarm.Alarm = RTC_ALARM_A;
  if (HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, RTC_FORMAT_BCD) != HAL_OK)
  {
    Error_Handler();
  }
 
  /** Enable the Alarm B
  */
  sAlarm.AlarmTime.Seconds = 0x10;
  sAlarm.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY|RTC_ALARMMASK_HOURS
                              |RTC_ALARMMASK_MINUTES;
  sAlarm.Alarm = RTC_ALARM_B;
  if (HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, RTC_FORMAT_BCD) != HAL_OK)
  {
    Error_Handler();
  }
 
  /** Enable the WakeUp
  */
  if (HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 0, RTC_WAKEUPCLOCK_CK_SPRE_16BITS, 0) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN RTC_Init 2 */
	HAL_RTCEx_BKUPWrite(&hrtc, RTC_BKP_DR10, 0x32F2);
	}
  /* USER CODE END RTC_Init 2 */
 
}

First time, I write 0x32F2 to BackUp register 10. The TIMER_IF_Init() function below,

UTIL_TIMER_Status_t TIMER_IF_Init(void)
{
  UTIL_TIMER_Status_t ret = UTIL_TIMER_OK;
  /* USER CODE BEGIN TIMER_IF_Init */
 
  /* USER CODE END TIMER_IF_Init */
  if (RTC_Initialized == false)
  {
    hrtc.IsEnabled.RtcFeatures = UINT32_MAX;
    /*Init RTC*/
    MX_RTC_Init();
    /*Stop Timer */
    TIMER_IF_StopTimer();
    /** DeActivate the Alarm A enabled by STM32CubeMX during MX_RTC_Init() */
    HAL_RTC_DeactivateAlarm(&hrtc, RTC_ALARM_A);
    /*overload RTC feature enable*/
    hrtc.IsEnabled.RtcFeatures = UINT32_MAX;
 
    /*Enable Direct Read of the calendar registers (not through Shadow) */
    HAL_RTCEx_EnableBypassShadow(&hrtc);
    /*Initialize MSB ticks*/
    TIMER_IF_BkUp_Write_MSBticks(0);
 
    TIMER_IF_SetTimerContext();
 
    /* Register a task to associate to UTIL_TIMER_Irq() interrupt */
    UTIL_TIMER_IRQ_MAP_INIT();
 
    RTC_Initialized = true;
  }
 
  /* USER CODE BEGIN TIMER_IF_Init_Last */
 
  /* USER CODE END TIMER_IF_Init_Last */
  return ret;
}

My project run without no stuck in first time. When I reset MCU, my project stuck when called PWR_ExitStopMode().

What wrong in my code.

Anyone know how to fix this problem? Please support me.