最近在搞得一个项目要用到时间、日期显示，开启stm32内部RTC，但是发现一个问题，就是我显示的时间老是不准确

大概要比正常的时间晚1个半小时之多。

/*-------------------------配置RTC时钟----------------------------------------*/
void RTC_CLK_Config(void)
{
    RCC_OscInitTypeDef          RCC_OscInitStruct;
    RCC_PeriphCLKInitTypeDef    eriphClkInitStruct;
    
  /*##-1- Configue LSI as  RTC clock soucre ############################*/     
    RCC_OscInitStruct.OscillatorType =  RCC_OSCILLATORTYPE_LSE;//外部LSE时钟为RTC时钟源
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
    RCC_OscInitStruct.LSEState = RCC_LSE_ON;    
    HAL_RCC_OscConfig(&RCC_OscInitStruct);


    PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
    PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
    HAL_RCCEx_PeriphCLKConfig(&eriphClkInitStruct);
    
  /*##-2- Enable RTC peripheral Clocks #######################################*/ 
  /* Enable RTC Clock */     
    __HAL_RCC_RTC_ENABLE();

}
/*------------------日期时间参数配置------------------------------------------*/
void RTC_Config(void)
{
//   HAL_RTC_CLK_ENABLE();
  
    RTC_CLK_Config();
  /*##-1- Configure the RTC peripheral #######################################*/
  /* Configure RTC prescaler and RTC data registers */
  /* RTC configured as follow:
      - Hour Format    = Format 24
      - Asynch Prediv  = Value according to source clock
      - Synch Prediv   = Value according to source clock
      - OutPut         = Output Disable
      - OutPutPolarity = High Polarity
      - OutPutType     = Open Drain */
  RtcHandle.Instance = RTC; 
  RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
  RtcHandle.Init.AsynchPrediv = 0x7F;              // RTC_ASYNCH_PREDIV;
  RtcHandle.Init.SynchPrediv = 0x0130;             //RTC_SYNCH_PREDIV;
  RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
  RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
  RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
  
  HAL_RTC_Init(&RtcHandle);
  
  /*##-2- Check if Data stored in BackUp register0: No Need to reconfigure RTC#*/
  /* Read the BackUp Register 0 Data */
  if(HAL_RTCEx_BKUPRead(&RtcHandle, RTC_BKP_DR0) != 0x32F2)
  {  
    /* Configure RTC Calendar */
    RTC_CalendarConfig();
  }  
  
}

大神给提提建议哪里出了问题？