/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file    rtc.c
 * @brief   This file provides code for the configuration
 *          of the RTC instances.
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2025 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 init function */
void MX_RTC_Init(void)
{

  /* USER CODE BEGIN RTC_Init 0 */

  /* USER CODE END RTC_Init 0 */

  LL_RTC_InitTypeDef RTC_InitStruct = {0};
  LL_RTC_TimeTypeDef RTC_TimeStruct = {0};
  LL_RTC_DateTypeDef RTC_DateStruct = {0};

  if (LL_RCC_GetRTCClockSource() != LL_RCC_RTC_CLKSOURCE_LSE)
  {
    FlagStatus pwrclkchanged = RESET;
    /* Update LSE configuration in Backup Domain control register */
    /* Requires to enable write access to Backup Domain if necessary */
    if (LL_APB1_GRP1_IsEnabledClock(LL_APB1_GRP1_PERIPH_PWR) != 1U)
    {
      /* Enables the PWR Clock and Enables access to the backup domain */
      LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
      pwrclkchanged = SET;
    }
    if (LL_PWR_IsEnabledBkUpAccess() != 1U)
    {
      /* Enable write access to Backup domain */
      LL_PWR_EnableBkUpAccess();
      while (LL_PWR_IsEnabledBkUpAccess() == 0U)
      {
      }
    }
    LL_RCC_ForceBackupDomainReset();
    LL_RCC_ReleaseBackupDomainReset();
    LL_RCC_LSE_EnableBypass();
    LL_RCC_LSE_Enable();

    /* Wait till LSE is ready */
    while (LL_RCC_LSE_IsReady() != 1)
    {
    }
    LL_RCC_SetRTCClockSource(LL_RCC_RTC_CLKSOURCE_LSE);
    /* Restore clock configuration if changed */
    if (pwrclkchanged == SET)
    {
      LL_APB1_GRP1_DisableClock(LL_APB1_GRP1_PERIPH_PWR);
    }
  }

  /* Peripheral clock enable */
  LL_RCC_EnableRTC();

  /* USER CODE BEGIN RTC_Init 1 */

  /* USER CODE END RTC_Init 1 */

  /** Initialize RTC and set the Time and Date
   */
  RTC_InitStruct.HourFormat = LL_RTC_HOURFORMAT_24HOUR;
  RTC_InitStruct.AsynchPrescaler = 127;
  RTC_InitStruct.SynchPrescaler = 255;
  LL_RTC_Init(RTC, &RTC_InitStruct);
  LL_RTC_SetAsynchPrescaler(RTC, 127);
  LL_RTC_SetSynchPrescaler(RTC, 255);

  /** Initialize RTC and set the Time and Date
   */
  if (LL_RTC_BAK_GetRegister(RTC, LL_RTC_BKP_DR0) != 0x32F2)
  {

    RTC_TimeStruct.Hours = 0;
    RTC_TimeStruct.Minutes = 0;
    RTC_TimeStruct.Seconds = 0;
    LL_RTC_TIME_Init(RTC, LL_RTC_FORMAT_BCD, &RTC_TimeStruct);
    RTC_DateStruct.WeekDay = LL_RTC_WEEKDAY_MONDAY;
    RTC_DateStruct.Month = LL_RTC_MONTH_JANUARY;
    RTC_DateStruct.Day = 0x1;
    RTC_DateStruct.Year = 0;
    LL_RTC_DATE_Init(RTC, LL_RTC_FORMAT_BCD, &RTC_DateStruct);
    LL_RTC_BAK_SetRegister(RTC, LL_RTC_BKP_DR0, 0x32F2);
  }
  /* USER CODE BEGIN RTC_Init 2 */

  /* USER CODE END RTC_Init 2 */
}

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */