text: /* USER CODE BEGIN Header */
  /**
    ******************************************************************************
    * @file    RTC/RTC_Alarm/Src/main.c
    * @author  MCD Application Team
    * @brief   This sample code shows how to use STM32WLxx RTC HAL API to configure
    *          Time and Date.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
    * All rights reserved.</center></h2>
    *
    * This software component is licensed by ST under BSD 3-Clause license,
    * the "License"; You may not use this file except in compliance with the
    * License. You may obtain a copy of the License at:
    *                        opensource.org/licenses/BSD-3-Clause
    *
    ******************************************************************************
    */
  /* USER CODE END Header */
  /* Includes ------------------------------------------------------------------*/
  #include "main.h"
  
  /* Private includes ----------------------------------------------------------*/
  /* USER CODE BEGIN Includes */
  
  /* USER CODE END Includes */
  
  /* Private typedef -----------------------------------------------------------*/
  /* USER CODE BEGIN PTD */
  
  /* USER CODE END PTD */
  
  /* Private define ------------------------------------------------------------*/
  /* USER CODE BEGIN PD */
  
  /* USER CODE END PD */
  
  /* Private macro -------------------------------------------------------------*/
  /* USER CODE BEGIN PM */
  
  /* USER CODE END PM */
  
  /* Private variables ---------------------------------------------------------*/
  RTC_HandleTypeDef hrtc;
  
  /* USER CODE BEGIN PV */
  /* Buffer used for displaying Time */
  uint8_t aShowTime[16] = "hh:ms:ss";
  __IO uint32_t RTCStatus = 0;
  /* USER CODE END PV */
  
  /* Private function prototypes -----------------------------------------------*/
  void SystemClock_Config(void);
  static void MX_RTC_Init(void);
  /* USER CODE BEGIN PFP */
  static void RTC_TimeShow(uint8_t *showtime);
  /* USER CODE END PFP */
  
  /* Private user code ---------------------------------------------------------*/
  /* USER CODE BEGIN 0 */
  
  /* USER CODE END 0 */
  
  /**
    * @brief  The application entry point.
    * @retval int
    */
  int main(void)
  {
    /* USER CODE BEGIN 1 */
    /* STM32WLxx HAL library initialization:
         - Configure the Flash prefetch
         - Systick timer is configured by default as source of time base, but user 
           can eventually implement his proper time base source (a general purpose 
           timer for example or other time source), keeping in mind that Time base 
           duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and 
           handled in milliseconds basis.
         - Set NVIC Group Priority to 4
         - Low Level Initialization
       */
    /* USER CODE END 1 */
  
    /* MCU Configuration--------------------------------------------------------*/
  
    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    HAL_Init();
  
    /* USER CODE BEGIN Init */
    /* Configure LED2 and LED3 */
    BSP_LED_Init(LED2);
    BSP_LED_Init(LED3);
    /* USER CODE END Init */
  
    /* Configure the system clock */
    SystemClock_Config();
  
    /* USER CODE BEGIN SysInit */
  
    /* USER CODE END SysInit */
  
    /* Initialize all configured peripherals */
    MX_RTC_Init();
    /* USER CODE BEGIN 2 */
  
    /* USER CODE END 2 */
  
    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    RTCStatus = 1;
    while (1)
    {
      /* USER CODE END WHILE */
  
      /* USER CODE BEGIN 3 */
      /* Display the updated Time */
      RTC_TimeShow(aShowTime);
    }
    /* USER CODE END 3 */
  }
  
  /**
    * @brief System Clock Configuration
    * @retval None
    */
  void SystemClock_Config(void)
  {
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  
    /** Configure the main internal regulator output voltage
    */
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
    /** Initializes the CPU, AHB and APB busses clocks
    */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_MSI;
    RCC_OscInitStruct.MSIState = RCC_MSI_ON;
    RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
    RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_11;
    RCC_OscInitStruct.LSIDiv = RCC_LSI_DIV1;
    RCC_OscInitStruct.LSIState = RCC_LSI_ON;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
      Error_Handler();
    }
    /** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers
    */
    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK3|RCC_CLOCKTYPE_HCLK
                                |RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1
                                |RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSI;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.AHBCLK3Divider = RCC_SYSCLK_DIV1;
  
    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
    {
      Error_Handler();
    }
  }
  
  /**
    * @brief RTC Initialization Function
    * @param None
    * @retval None
    */
  static void MX_RTC_Init(void)
  {
  
    /* USER CODE BEGIN RTC_Init 0 */
  
    /* USER CODE END RTC_Init 0 */
  
    RTC_TimeTypeDef sTime = {0};
    RTC_DateTypeDef sDate = {0};
    RTC_AlarmTypeDef sAlarm = {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 = RTC_ASYNCH_PREDIV;
    hrtc.Init.SynchPrediv = RTC_SYNCH_PREDIV;
    hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
    hrtc.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
    hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
    hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
    hrtc.Init.OutPutPullUp = RTC_OUTPUT_PULLUP_NONE;
    hrtc.Init.BinMode = RTC_BINARY_NONE;
    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 = 0x2;
    sTime.Minutes = 0x20;
    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_MONDAY;
    sDate.Month = RTC_MONTH_FEBRUARY;
    sDate.Date = 0x18;
    sDate.Year = 0x14;
  
    if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BCD) != HAL_OK)
    {
      Error_Handler();
    }
    /** Enable the Alarm A
    */
    sAlarm.AlarmTime.Hours = 0x2;
    sAlarm.AlarmTime.Minutes = 0x20;
    sAlarm.AlarmTime.Seconds = 0x30;
    sAlarm.AlarmTime.SubSeconds = 0x56;
    sAlarm.AlarmTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
    sAlarm.AlarmTime.StoreOperation = RTC_STOREOPERATION_RESET;
    sAlarm.AlarmMask = RTC_ALARMMASK_NONE;
    sAlarm.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_ALL;
    sAlarm.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_WEEKDAY;
    sAlarm.AlarmDateWeekDay = RTC_WEEKDAY_MONDAY;
    sAlarm.Alarm = RTC_ALARM_A;
    if (HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, RTC_FORMAT_BCD) != HAL_OK)
    {
      Error_Handler();
    }
    /* USER CODE BEGIN RTC_Init 2 */
  
    /* USER CODE END RTC_Init 2 */
  
  }
  
  /* USER CODE BEGIN 4 */
  /**
    * @brief  Alarm callback
    * @param  hrtc : RTC handle
    * @retval None
    */
  void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
  {
  
    /* Turn LED2 on: Alarm generation */
    BSP_LED_On(LED2);
  
  
  }
  
  /**
    * @brief  Display the current time.
    * @param  showtime : pointer to buffer
    * @retval None
    */
  static void RTC_TimeShow(uint8_t *showtime)
  {
    RTC_DateTypeDef sdatestructureget;
    RTC_TimeTypeDef stimestructureget;
  
    /* Get the RTC current Time */
    HAL_RTC_GetTime(&hrtc, &stimestructureget, RTC_FORMAT_BIN);
    /* Get the RTC current Date */
    HAL_RTC_GetDate(&hrtc, &sdatestructureget, RTC_FORMAT_BIN);
    /* Display time Format : hh:mm:ss */
    sprintf((char *)showtime, "%02d:%02d:%02d", stimestructureget.Hours, stimestructureget.Minutes, stimestructureget.Seconds);
  }
  /* USER CODE END 4 */
  
  /**
    * @brief  This function is executed in case of error occurrence.
    * @retval None
    */
  void Error_Handler(void)
  {
    /* USER CODE BEGIN Error_Handler_Debug */
    /* User can add his own implementation to report the HAL error return state */
    RTCStatus = 0xE;
    while (1)
    {
      /* Toggle LED3 with a period of one second */
      BSP_LED_Toggle(LED3);
      HAL_Delay(1000);
  
    }
    /* USER CODE END Error_Handler_Debug */
  }
  
  #ifdef  USE_FULL_ASSERT
  /**
    * @brief  Reports the name of the source file and the source line number
    *         where the assert_param error has occurred.
    * @param  file: pointer to the source file name
    * @param  line: assert_param error line source number
    * @retval None
    */
  void assert_failed(uint8_t *file, uint32_t line)
  {
    /* USER CODE BEGIN 6 */
    /* User can add his own implementation to report the file name and line number,
      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
    /* USER CODE END 6 */
  }
  #endif /* USE_FULL_ASSERT */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  