/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    rtc.c
  * @brief   This file provides code for the configuration
  *          of the RTC instances.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "rtc.h"

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

RTC_HandleTypeDef hrtc;

/* 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 DateToUpdate = {0};

  /* USER CODE BEGIN RTC_Init 1 */

  /* USER CODE END RTC_Init 1 */

  /** Initialize RTC Only
  */
  hrtc.Instance = RTC;
  hrtc.Init.AsynchPrediv = RTC_AUTO_1_SECOND;
  hrtc.Init.OutPut = RTC_OUTPUTSOURCE_ALARM;
  if (HAL_RTC_Init(&hrtc) != HAL_OK)
  {
    Error_Handler();
  }

  /* USER CODE BEGIN Check_RTC_BKUP */
  __HAL_RTC_SECOND_ENABLE_IT(&hrtc, RTC_IT_SEC);
  if (HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR1) == 0x1234) {
	//  从备份寄存器还原日期
	hrtc.DateToUpdate.Year = HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR2);
	hrtc.DateToUpdate.Month = HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR3);
	hrtc.DateToUpdate.Date = HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR4);
	//  把RTC计数单元的计数值更新到日期
	HAL_RTC_GetTime(&hrtc, &sTime, RTC_FORMAT_BIN);

	return;
  }
  /* USER CODE END Check_RTC_BKUP */

  /** Initialize RTC and set the Time and Date
  */
  sTime.Hours = 0;
  sTime.Minutes = 0;
  sTime.Seconds = 0;

  if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BIN) != HAL_OK)
  {
    Error_Handler();
  }
  DateToUpdate.WeekDay = RTC_WEEKDAY_MONDAY;
  DateToUpdate.Month = RTC_MONTH_JANUARY;
  DateToUpdate.Date = 1;
  DateToUpdate.Year = 0;

  if (HAL_RTC_SetDate(&hrtc, &DateToUpdate, RTC_FORMAT_BIN) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN RTC_Init 2 */
  HAL_RTCEx_BKUPWrite(&hrtc,RTC_BKP_DR1,0x1234);
  /* USER CODE END RTC_Init 2 */

}

void HAL_RTC_MspInit(RTC_HandleTypeDef* rtcHandle)
{

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

  /* USER CODE END RTC_MspInit 0 */
    HAL_PWR_EnableBkUpAccess();
    /* Enable BKP CLK enable for backup registers */
    __HAL_RCC_BKP_CLK_ENABLE();
    /* RTC clock enable */
    __HAL_RCC_RTC_ENABLE();

    /* RTC interrupt Init */
    HAL_NVIC_SetPriority(RTC_IRQn, 3, 0);
    HAL_NVIC_EnableIRQ(RTC_IRQn);
    HAL_NVIC_SetPriority(RTC_Alarm_IRQn, 3, 0);
    HAL_NVIC_EnableIRQ(RTC_Alarm_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_IRQn);
    HAL_NVIC_DisableIRQ(RTC_Alarm_IRQn);
  /* USER CODE BEGIN RTC_MspDeInit 1 */

  /* USER CODE END RTC_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */