芯片:STM32F29IIGT6 阿波罗开发板

1.配置时钟

2.HAL外设配置

3.代码解析

生成rtc文件

RTC_HandleTypeDef hrtc;

/* RTC init function */
void MX_RTC_Init(void)
{

  /* USER CODE BEGIN RTC_Init 0 */
  RTC_TimeTypeDef rtc_time;
  RTC_DateTypeDef rtc_data;
  /* USER CODE END RTC_Init 0 */

  RTC_TimeTypeDef sTime = {0};
  RTC_DateTypeDef sDate = {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 = 127;
  hrtc.Init.SynchPrediv = 255;
  hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
  hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
  hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
  if (HAL_RTC_Init(&hrtc) != HAL_OK)
  {
    Error_Handler();
  }

  /* USER CODE BEGIN Check_RTC_BKUP */

  /* USER CODE END Check_RTC_BKUP */

  /** Initialize RTC and set the Time and Date
  */
//  sTime.Hours = 0x21;
//  sTime.Minutes = 0x33;
//  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_FRIDAY;
//  sDate.Month = RTC_MONTH_JUNE;
//  sDate.Date = 0x2;
//  sDate.Year = 0x23;

//  if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BCD) != HAL_OK)
//  {
//    Error_Handler();
//  }

  /** Enable the WakeUp
  */
  __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&hrtc, RTC_FLAG_WUTF);
  if (HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 0, RTC_WAKEUPCLOCK_CK_SPRE_16BITS) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN RTC_Init 2 */
  
  /* USER CODE END RTC_Init 2 */

}

void HAL_RTC_MspInit(RTC_HandleTypeDef* rtcHandle)
{

  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
  if(rtcHandle->Instance==RTC)
  {
  /* USER CODE BEGIN RTC_MspInit 0 */

  /* USER CODE END RTC_MspInit 0 */

  /** Initializes the peripherals clock
  */
    PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
    PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
    {
      Error_Handler();
    }

    /* RTC clock enable */
    __HAL_RCC_RTC_ENABLE();

    /* RTC interrupt Init */
    HAL_NVIC_SetPriority(RTC_WKUP_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(RTC_WKUP_IRQn);
  /* USER CODE BEGIN RTC_MspInit 1 */

  /* USER CODE END RTC_MspInit 1 */
  }
}

void HAL_RTC_MspDeInit(RTC_HandleTypeDef* rtcHandle)
{

  if(rtcHandle->Instance==RTC)
  {
  /* USER CODE BEGIN RTC_MspDeInit 0 */

  /* USER CODE END RTC_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_RTC_DISABLE();

    /* RTC interrupt Deinit */
    HAL_NVIC_DisableIRQ(RTC_WKUP_IRQn);
  /* USER CODE BEGIN RTC_MspDeInit 1 */

  /* USER CODE END RTC_MspDeInit 1 */
  }
}

生成的中断函数

/**
  * @brief This function handles RTC wake-up interrupt through EXTI line 22.
  */
void RTC_WKUP_IRQHandler(void)
{
  /* USER CODE BEGIN RTC_WKUP_IRQn 0 */

  /* USER CODE END RTC_WKUP_IRQn 0 */
  HAL_RTCEx_WakeUpTimerIRQHandler(&hrtc);
  /* USER CODE BEGIN RTC_WKUP_IRQn 1 */

  /* USER CODE END RTC_WKUP_IRQn 1 */
}

点击进  HAL_RTCEx_WakeUpTimerIRQHandler(&hrtc);

 增加自我编写代码, 启动备份区数据,保护关机不掉时间

RTC_TimeTypeDef rtc_t; //时间
RTC_DateTypeDef rtc_d; //日期
//void RTC_Set_WakeUp(uint32_t wksel,uint16_t cnt);//配置WAKE UP中断,1秒钟中断一次


//!RTC时间设置
//hour,min,sec:小时,分钟,秒钟
//ampm:@RTC_AM_PM_Definitions:RTC_HOURFORMAT12_AM/RTC_HOURFORMAT12_PM
//返回值:SUCEE(1),成功
//       ERROR(0),进入初始化模式失败
HAL_StatusTypeDef RTC_Set_Time(uint8_t hour, uint8_t min, uint8_t sec, uint8_t ampm)
{
    RTC_TimeTypeDef RTC_TimeStructure;

    RTC_TimeStructure.Hours          = hour;
    RTC_TimeStructure.Minutes        = min;
    RTC_TimeStructure.Seconds        = sec;
    RTC_TimeStructure.TimeFormat     = ampm;
    RTC_TimeStructure.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
    RTC_TimeStructure.StoreOperation = RTC_STOREOPERATION_RESET;
    return HAL_RTC_SetTime(&hrtc, &RTC_TimeStructure, RTC_FORMAT_BIN);
}
//!RTC日期设置
//year,month,date:年(0~99),月(1~12),日(0~31)
//week:星期(1~7,0,非法!)
//返回值:SUCEE(1),成功
//       ERROR(0),进入初始化模式失败
HAL_StatusTypeDef RTC_Set_Date(uint8_t year,uint8_t month,uint8_t date,uint8_t week)
{
	RTC_DateTypeDef RTC_DateStructure;

	RTC_DateStructure.Date    = date;
	RTC_DateStructure.Month   = month;
	RTC_DateStructure.WeekDay = week;
	RTC_DateStructure.Year    = year;
	return HAL_RTC_SetDate(&hrtc,&RTC_DateStructure,RTC_FORMAT_BIN);
}
/* RTC_HandleTypeDef hrtc; */
//RTC初始化
int RTC_AutoInit(void)
{
    __HAL_RCC_PWR_CLK_ENABLE();//使能电源时钟PWR
	HAL_PWR_EnableBkUpAccess();//取消备份区域写保护
	COM_Printf("RTC_BKP_DR0 = %04X\r\n",HAL_RTCEx_BKUPRead(&hrtc,RTC_BKP_DR0));
    if(HAL_RTCEx_BKUPRead(&hrtc,RTC_BKP_DR0)!=0xAA55) //检查备份区数据
    {
        RTC_Set_Time(8,12,0,RTC_HOURFORMAT12_AM); //写时间(时分秒,(上,下午))
        RTC_Set_Date(23,6,1,4);                   //写日期(年月日,星期)
        HAL_RTCEx_BKUPWrite(&hrtc,RTC_BKP_DR0,0xAA55);
    }
    return 0;
}
//INIT_BOARD_EXPORT(RTC_AutoInit);

//RTC WAKE UP中断处理 (1秒回调一次读时间)
void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *phrtc)
{
    // 处理唤醒定时器超时中断
    HAL_RTC_GetTime(phrtc, &rtc_t, RTC_FORMAT_BIN);
    HAL_RTC_GetDate(phrtc, &rtc_d, RTC_FORMAT_BIN);

}

4.闹钟回调(暂时无)