f103 hal RTC_alarm该怎样去使用呢

1.初始化RTCRTC_handle.Instance = RTC;RTC_handle.Lock = HAL_UNLOCKED;RTC_handle.Init.AsynchPrediv = RTC_AUTO_1_SECOND;RTC_handle.Init.OutPut = RTC_OUTPUTSOURCE_ALARM;        if(HAL_RTC_Init(&RTC_handle) != HAL_OK){        HAL_GPIO_WritePin(GPIOB,GPIO_PIN_8,GPIO_