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  1. /**
  2.   ******************************************************************************
  3.   * @file    stm32f0xx_hal_rtc.c
  4.   * @author  MCD Application Team
  5.   * @brief   RTC HAL module driver.
  6.   *          This file provides firmware functions to manage the following
  7.   *          functionalities of the Real Time Clock (RTC) peripheral:
  8.   *           + Initialization and de-initialization functions
  9.   *           + RTC Time and Date functions
  10.   *           + RTC Alarm functions
  11.   *           + Peripheral Control functions
  12.   *           + Peripheral State functions
  13.   *
  14.   @verbatim
  15.   ==============================================================================
  16.                   ##### How to use RTC Driver #####
  17.  ===================================================================
  18.     [..]
  19.         (+) Enable the RTC domain access (see description in the section above).
  20.         (+) Configure the RTC Prescaler (Asynchronous and Synchronous) and RTC hour
  21.             format using the HAL_RTC_Init() function.
  22.  
  23.     *** Time and Date configuration ***
  24.     ===================================
  25.     [..]
  26.         (+) To configure the RTC Calendar (Time and Date) use the HAL_RTC_SetTime()
  27.             and HAL_RTC_SetDate() functions.
  28.         (+) To read the RTC Calendar, use the HAL_RTC_GetTime() and HAL_RTC_GetDate() functions.
  29.  
  30.     *** Alarm configuration ***
  31.     ===========================
  32.     [..]
  33.     (+) To configure the RTC Alarm use the HAL_RTC_SetAlarm() function.
  34.             You can also configure the RTC Alarm with interrupt mode using the
  35.             HAL_RTC_SetAlarm_IT() function.
  36.         (+) To read the RTC Alarm, use the HAL_RTC_GetAlarm() function.
  37.  
  38.                   ##### RTC and low power modes #####
  39.  ===================================================================
  40.     [..] The MCU can be woken up from a low power mode by an RTC alternate
  41.          function.
  42.     [..] The RTC alternate functions are the RTC alarm (Alarm A),
  43.          RTC wake-up, RTC tamper event detection and RTC time stamp event detection.
  44.          These RTC alternate functions can wake up the system from the Stop and
  45.          Standby low power modes.
  46.     [..] The system can also wake up from low power modes without depending
  47.          on an external interrupt (Auto-wake-up mode), by using the RTC alarm
  48.          or the RTC wake-up events.
  49.     [..] The RTC provides a programmable time base for waking up from the
  50.          Stop or Standby mode at regular intervals.
  51.          Wake-up from STOP and STANDBY modes is possible only when the RTC clock source
  52.          is LSE or LSI.
  53.  
  54.   *** Callback registration ***
  55.   =============================================
  56.  
  57.   The compilation define  USE_RTC_REGISTER_CALLBACKS when set to 1
  58.   allows the user to configure dynamically the driver callbacks.
  59.   Use Function @ref HAL_RTC_RegisterCallback() to register an interrupt callback.
  60.  
  61.   Function @ref HAL_RTC_RegisterCallback() allows to register following callbacks:
  62.     (+) AlarmAEventCallback          : RTC Alarm A Event callback.
  63.     (+) TimeStampEventCallback       : RTC TimeStamp Event callback.
  64.     (+) WakeUpTimerEventCallback     : RTC WakeUpTimer Event callback.
  65.     (+) Tamper1EventCallback         : RTC Tamper 1 Event callback.
  66.     (+) Tamper2EventCallback         : RTC Tamper 2 Event callback.
  67.     (+) Tamper3EventCallback         : RTC Tamper 3 Event callback.
  68.     (+) MspInitCallback              : RTC MspInit callback.
  69.     (+) MspDeInitCallback            : RTC MspDeInit callback.
  70.   This function takes as parameters the HAL peripheral handle, the Callback ID
  71.   and a pointer to the user callback function.
  72.  
  73.   Use function @ref HAL_RTC_UnRegisterCallback() to reset a callback to the default
  74.   weak function.
  75.   @ref HAL_RTC_UnRegisterCallback() takes as parameters the HAL peripheral handle,
  76.   and the Callback ID.
  77.   This function allows to reset following callbacks:
  78.     (+) AlarmAEventCallback          : RTC Alarm A Event callback.
  79.     (+) TimeStampEventCallback       : RTC TimeStamp Event callback.
  80.     (+) WakeUpTimerEventCallback     : RTC WakeUpTimer Event callback.
  81.     (+) Tamper1EventCallback         : RTC Tamper 1 Event callback.
  82.     (+) Tamper2EventCallback         : RTC Tamper 2 Event callback.
  83.     (+) Tamper3EventCallback         : RTC Tamper 3 Event callback.
  84.     (+) MspInitCallback              : RTC MspInit callback.
  85.     (+) MspDeInitCallback            : RTC MspDeInit callback.
  86.  
  87.   By default, after the @ref HAL_RTC_Init() and when the state is HAL_RTC_STATE_RESET,
  88.   all callbacks are set to the corresponding weak functions :
  89.   examples @ref AlarmAEventCallback(), @ref WakeUpTimerEventCallback().
  90.   Exception done for MspInit and MspDeInit callbacks that are reset to the legacy weak function
  91.   in the @ref HAL_RTC_Init()/@ref HAL_RTC_DeInit() only when these callbacks are null
  92.   (not registered beforehand).
  93.   If not, MspInit or MspDeInit are not null, @ref HAL_RTC_Init()/@ref HAL_RTC_DeInit()
  94.   keep and use the user MspInit/MspDeInit callbacks (registered beforehand)
  95.  
  96.   Callbacks can be registered/unregistered in HAL_RTC_STATE_READY state only.
  97.   Exception done MspInit/MspDeInit that can be registered/unregistered
  98.   in HAL_RTC_STATE_READY or HAL_RTC_STATE_RESET state,
  99.   thus registered (user) MspInit/DeInit callbacks can be used during the Init/DeInit.
  100.   In that case first register the MspInit/MspDeInit user callbacks
  101.   using @ref HAL_RTC_RegisterCallback() before calling @ref HAL_RTC_DeInit()
  102.   or @ref HAL_RTC_Init() function.
  103.  
  104.   When The compilation define USE_HAL_RTC_REGISTER_CALLBACKS is set to 0 or
  105.   not defined, the callback registration feature is not available and all callbacks
  106.   are set to the corresponding weak functions.
  107.   @endverbatim
  108.  
  109.   ******************************************************************************
  110.   * @attention
  111.   *
  112.   * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  113.   * All rights reserved.</center></h2>
  114.   *
  115.   * This software component is licensed by ST under BSD 3-Clause license,
  116.   * the "License"; You may not use this file except in compliance with the
  117.   * License. You may obtain a copy of the License at:
  118.   *                        opensource.org/licenses/BSD-3-Clause
  119.   *
  120.   ******************************************************************************
  121.   */
  122.  
  123. /* Includes ------------------------------------------------------------------*/
  124. #include "stm32f0xx_hal.h"
  125.  
  126. /** @addtogroup STM32F0xx_HAL_Driver
  127.   * @{
  128.   */
  129.  
  130. /** @addtogroup RTC
  131.   * @brief RTC HAL module driver
  132.   * @{
  133.   */
  134.  
  135. #ifdef HAL_RTC_MODULE_ENABLED
  136.  
  137. /* Private typedef -----------------------------------------------------------*/
  138. /* Private define ------------------------------------------------------------*/
  139. /* Private macro -------------------------------------------------------------*/
  140. /* Private variables ---------------------------------------------------------*/
  141. /* Private function prototypes -----------------------------------------------*/
  142. /* Exported functions ---------------------------------------------------------*/
  143.  
  144. /** @addtogroup RTC_Exported_Functions
  145.   * @{
  146.   */
  147.  
  148. /** @addtogroup RTC_Exported_Functions_Group1
  149.  *  @brief    Initialization and Configuration functions
  150.  *
  151. @verbatim
  152.  ===============================================================================
  153.               ##### Initialization and de-initialization functions #####
  154.  ===============================================================================
  155.    [..] This section provides functions allowing to initialize and configure the
  156.          RTC Prescaler (Synchronous and Asynchronous), RTC Hour format, disable
  157.          RTC registers Write protection, enter and exit the RTC initialization mode,
  158.          RTC registers synchronization check and reference clock detection enable.
  159.          (#) The RTC Prescaler is programmed to generate the RTC 1Hz time base.
  160.              It is split into 2 programmable prescalers to minimize power consumption.
  161.              (++) A 7-bit asynchronous prescaler and a 15-bit synchronous prescaler.
  162.              (++) When both prescalers are used, it is recommended to configure the
  163.                  asynchronous prescaler to a high value to minimize power consumption.
  164.          (#) All RTC registers are Write protected. Writing to the RTC registers
  165.              is enabled by writing a key into the Write Protection register, RTC_WPR.
  166.          (#) To configure the RTC Calendar, user application should enter
  167.              initialization mode. In this mode, the calendar counter is stopped
  168.              and its value can be updated. When the initialization sequence is
  169.              complete, the calendar restarts counting after 4 RTCCLK cycles.
  170.          (#) To read the calendar through the shadow registers after Calendar
  171.              initialization, calendar update or after wake-up from low power modes
  172.              the software must first clear the RSF flag. The software must then
  173.              wait until it is set again before reading the calendar, which means
  174.              that the calendar registers have been correctly copied into the
  175.              RTC_TR and RTC_DR shadow registers.The HAL_RTC_WaitForSynchro() function
  176.              implements the above software sequence (RSF clear and RSF check).
  177.  
  178. @endverbatim
  179.   * @{
  180.   */
  181.  
  182. /**
  183.   * @brief  Initialize the RTC according to the specified parameters
  184.   *         in the RTC_InitTypeDef structure and initialize the associated handle.
  185.   * @param  hrtc RTC handle
  186.   * @retval HAL status
  187.   */
  188. HAL_StatusTypeDef HAL_RTC_Init(RTC_HandleTypeDef *hrtc)
  189. {
  190.   /* Check the RTC peripheral state */
  191.   if (hrtc == NULL)
  192.   {
  193.     return HAL_ERROR;
  194.   }
  195.  
  196.   /* Check the parameters */
  197.   assert_param(IS_RTC_ALL_INSTANCE(hrtc->Instance));
  198.   assert_param(IS_RTC_HOUR_FORMAT(hrtc->Init.HourFormat));
  199.   assert_param(IS_RTC_ASYNCH_PREDIV(hrtc->Init.AsynchPrediv));
  200.   assert_param(IS_RTC_SYNCH_PREDIV(hrtc->Init.SynchPrediv));
  201.   assert_param(IS_RTC_OUTPUT(hrtc->Init.OutPut));
  202.   assert_param(IS_RTC_OUTPUT_POL(hrtc->Init.OutPutPolarity));
  203.   assert_param(IS_RTC_OUTPUT_TYPE(hrtc->Init.OutPutType));
  204.  
  205. #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
  206.   if (hrtc->State == HAL_RTC_STATE_RESET)
  207.   {
  208.     /* Allocate lock resource and initialize it */
  209.     hrtc->Lock = HAL_UNLOCKED;
  210.  
  211.     hrtc->AlarmAEventCallback          =  HAL_RTC_AlarmAEventCallback;        /* Legacy weak AlarmAEventCallback      */
  212.     hrtc->TimeStampEventCallback       =  HAL_RTCEx_TimeStampEventCallback;   /* Legacy weak TimeStampEventCallback   */
  213. #if defined(RTC_WAKEUP_SUPPORT)
  214.     hrtc->WakeUpTimerEventCallback     =  HAL_RTCEx_WakeUpTimerEventCallback; /* Legacy weak WakeUpTimerEventCallback */
  215. #endif /* RTC_WAKEUP_SUPPORT */
  216.     hrtc->Tamper1EventCallback         =  HAL_RTCEx_Tamper1EventCallback;     /* Legacy weak Tamper1EventCallback     */
  217.     hrtc->Tamper2EventCallback         =  HAL_RTCEx_Tamper2EventCallback;     /* Legacy weak Tamper2EventCallback     */
  218. #if defined(RTC_TAMPER3_SUPPORT)
  219.     hrtc->Tamper3EventCallback         =  HAL_RTCEx_Tamper3EventCallback;     /* Legacy weak Tamper3EventCallback     */
  220. #endif /* RTC_TAMPER3_SUPPORT */
  221.  
  222.     if (hrtc->MspInitCallback == NULL)
  223.     {
  224.       hrtc->MspInitCallback = HAL_RTC_MspInit;
  225.     }
  226.     /* Init the low level hardware */
  227.     hrtc->MspInitCallback(hrtc);
  228.  
  229.     if (hrtc->MspDeInitCallback == NULL)
  230.     {
  231.       hrtc->MspDeInitCallback = HAL_RTC_MspDeInit;
  232.     }
  233.   }
  234. #else
  235.   if (hrtc->State == HAL_RTC_STATE_RESET)
  236.   {
  237.     /* Allocate lock resource and initialize it */
  238.     hrtc->Lock = HAL_UNLOCKED;
  239.  
  240.     /* Initialize RTC MSP */
  241.     HAL_RTC_MspInit(hrtc);
  242.   }
  243. #endif /* (USE_HAL_RTC_REGISTER_CALLBACKS) */
  244.  
  245.   /* Set RTC state */
  246.   hrtc->State = HAL_RTC_STATE_BUSY;
  247.  
  248.   /* Disable the write protection for RTC registers */
  249.   __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
  250.  
  251.   /* Set Initialization mode */
  252.   if (RTC_EnterInitMode(hrtc) != HAL_OK)
  253.   {
  254.     /* Enable the write protection for RTC registers */
  255.     __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  256.  
  257.     /* Set RTC state */
  258.     hrtc->State = HAL_RTC_STATE_ERROR;
  259.  
  260.     return HAL_ERROR;
  261.   }
  262.   else
  263.   {
  264.     /* Clear RTC_CR FMT, OSEL and POL Bits */
  265.     hrtc->Instance->CR &= ((uint32_t)~(RTC_CR_FMT | RTC_CR_OSEL | RTC_CR_POL));
  266.     /* Set RTC_CR register */
  267.     hrtc->Instance->CR |= (uint32_t)(hrtc->Init.HourFormat | hrtc->Init.OutPut | hrtc->Init.OutPutPolarity);
  268.  
  269.     /* Configure the RTC PRER */
  270.     hrtc->Instance->PRER = (uint32_t)(hrtc->Init.SynchPrediv);
  271.     hrtc->Instance->PRER |= (uint32_t)(hrtc->Init.AsynchPrediv << 16U);
  272.  
  273.     /* Exit Initialization mode */
  274.     hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT;
  275.  
  276.     /* If  CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
  277.     if ((hrtc->Instance->CR & RTC_CR_BYPSHAD) == RESET)
  278.     {
  279.       if (HAL_RTC_WaitForSynchro(hrtc) != HAL_OK)
  280.       {
  281.         /* Enable the write protection for RTC registers */
  282.         __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  283.  
  284.         hrtc->State = HAL_RTC_STATE_ERROR;
  285.  
  286.         return HAL_ERROR;
  287.       }
  288.     }
  289.  
  290.     hrtc->Instance->TAFCR &= (uint32_t)~RTC_TAFCR_ALARMOUTTYPE;
  291.     hrtc->Instance->TAFCR |= (uint32_t)(hrtc->Init.OutPutType);
  292.  
  293.     /* Enable the write protection for RTC registers */
  294.     __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  295.  
  296.     /* Set RTC state */
  297.     hrtc->State = HAL_RTC_STATE_READY;
  298.  
  299.     return HAL_OK;
  300.   }
  301. }
  302.  
  303. /**
  304.   * @brief  DeInitialize the RTC peripheral.
  305.   * @param  hrtc RTC handle
  306.   * @note   This function doesn't reset the RTC Backup Data registers.
  307.   * @retval HAL status
  308.   */
  309. HAL_StatusTypeDef HAL_RTC_DeInit(RTC_HandleTypeDef *hrtc)
  310. {
  311. #if defined (STM32F030xC) || defined (STM32F070xB) || \
  312.     defined (STM32F071xB) || defined (STM32F072xB) || defined (STM32F078xx) || \
  313.     defined (STM32F091xC) || defined (STM32F098xx)
  314.   uint32_t tickstart = 0;
  315. #endif /* defined (STM32F030xC) || defined (STM32F070xB) ||\
  316.           defined (STM32F071xB) || defined (STM32F072xB) || defined (STM32F078xx) || \
  317.           defined (STM32F091xC) || defined (STM32F098xx) ||*/
  318.  
  319.   /* Check the parameters */
  320.   assert_param(IS_RTC_ALL_INSTANCE(hrtc->Instance));
  321.  
  322.   /* Set RTC state */
  323.   hrtc->State = HAL_RTC_STATE_BUSY;
  324.  
  325.   /* Disable the write protection for RTC registers */
  326.   __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
  327.  
  328.   /* Set Initialization mode */
  329.   if (RTC_EnterInitMode(hrtc) != HAL_OK)
  330.   {
  331.     /* Enable the write protection for RTC registers */
  332.     __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  333.  
  334.     /* Set RTC state */
  335.     hrtc->State = HAL_RTC_STATE_ERROR;
  336.  
  337.     return HAL_ERROR;
  338.   }
  339.   else
  340.   {
  341.     /* Reset TR, DR and CR registers */
  342.     hrtc->Instance->TR = 0x00000000U;
  343.     hrtc->Instance->DR = 0x00002101U;
  344.  
  345. #if defined (STM32F030xC) || defined (STM32F070xB) || \
  346.     defined (STM32F071xB) || defined (STM32F072xB) || defined (STM32F078xx) || \
  347.     defined (STM32F091xC) || defined (STM32F098xx)
  348.     /* Reset All CR bits except CR[2:0] */
  349.     hrtc->Instance->CR &= 0x00000007U;
  350.  
  351.     tickstart = HAL_GetTick();
  352.  
  353.     /* Wait till WUTWF flag is set and if Time out is reached exit */
  354.     while (((hrtc->Instance->ISR) & RTC_ISR_WUTWF) == (uint32_t)RESET)
  355.     {
  356.       if ((HAL_GetTick() - tickstart) >  RTC_TIMEOUT_VALUE)
  357.       {
  358.         /* Enable the write protection for RTC registers */
  359.         __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  360.  
  361.         /* Set RTC state */
  362.         hrtc->State = HAL_RTC_STATE_TIMEOUT;
  363.  
  364.         return HAL_TIMEOUT;
  365.       }
  366.     }
  367. #endif /* defined (STM32F030xC) || defined (STM32F070xB) ||\
  368.           defined (STM32F071xB) || defined (STM32F072xB) || defined (STM32F078xx) || \
  369.           defined (STM32F091xC) || defined (STM32F098xx) ||*/
  370.  
  371.     /* Reset all RTC CR register bits */
  372.     hrtc->Instance->CR &= 0x00000000U;
  373. #if defined (STM32F030xC) || defined (STM32F070xB) || \
  374.     defined (STM32F071xB) || defined (STM32F072xB) || defined (STM32F078xx) || \
  375.     defined (STM32F091xC) || defined (STM32F098xx)
  376.     hrtc->Instance->WUTR = 0x0000FFFFU;
  377. #endif /* defined (STM32F030xC) || defined (STM32F070xB) ||\
  378.           defined (STM32F071xB) || defined (STM32F072xB) || defined (STM32F078xx) || \
  379.           defined (STM32F091xC) || defined (STM32F098xx) ||*/
  380.     hrtc->Instance->PRER = 0x007F00FFU;
  381.     hrtc->Instance->ALRMAR = 0x00000000U;
  382.     hrtc->Instance->SHIFTR = 0x00000000U;
  383.     hrtc->Instance->CALR = 0x00000000U;
  384.     hrtc->Instance->ALRMASSR = 0x00000000U;
  385.  
  386.     /* Reset ISR register and exit initialization mode */
  387.     hrtc->Instance->ISR = 0x00000000U;
  388.  
  389.     /* Reset Tamper and alternate functions configuration register */
  390.     hrtc->Instance->TAFCR = 0x00000000;
  391.  
  392.     /* If  RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
  393.     if ((hrtc->Instance->CR & RTC_CR_BYPSHAD) == RESET)
  394.     {
  395.       if (HAL_RTC_WaitForSynchro(hrtc) != HAL_OK)
  396.       {
  397.         /* Enable the write protection for RTC registers */
  398.         __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  399.  
  400.         hrtc->State = HAL_RTC_STATE_ERROR;
  401.  
  402.         return HAL_ERROR;
  403.       }
  404.     }
  405.   }
  406.  
  407.   /* Enable the write protection for RTC registers */
  408.   __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  409.  
  410. #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
  411.   if (hrtc->MspDeInitCallback == NULL)
  412.   {
  413.     hrtc->MspDeInitCallback = HAL_RTC_MspDeInit;
  414.   }
  415.  
  416.   /* DeInit the low level hardware: CLOCK, NVIC.*/
  417.   hrtc->MspDeInitCallback(hrtc);
  418.  
  419. #else
  420.   /* De-Initialize RTC MSP */
  421.   HAL_RTC_MspDeInit(hrtc);
  422. #endif /* (USE_HAL_RTC_REGISTER_CALLBACKS) */
  423.  
  424.   hrtc->State = HAL_RTC_STATE_RESET;
  425.  
  426.   /* Release Lock */
  427.   __HAL_UNLOCK(hrtc);
  428.  
  429.   return HAL_OK;
  430. }
  431.  
  432. #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
  433. /**
  434.   * @brief  Register a User RTC Callback
  435.   *         To be used instead of the weak predefined callback
  436.   * @param  hrtc RTC handle
  437.   * @param  CallbackID ID of the callback to be registered
  438.   *         This parameter can be one of the following values:
  439.   *          @arg @ref HAL_RTC_ALARM_A_EVENT_CB_ID          Alarm A Event Callback ID
  440.   *          @arg @ref HAL_RTC_TIMESTAMP_EVENT_CB_ID        TimeStamp Event Callback ID
  441.   *          @arg @ref HAL_RTC_WAKEUPTIMER_EVENT_CB_ID      WakeUp Timer Event Callback ID
  442.   *          @arg @ref HAL_RTC_TAMPER1_EVENT_CB_ID          Tamper 1 Callback ID
  443.   *          @arg @ref HAL_RTC_TAMPER2_EVENT_CB_ID          Tamper 2 Callback ID
  444.   *          @arg @ref HAL_RTC_TAMPER3_EVENT_CB_ID          Tamper 3 Callback ID
  445.   *          @arg @ref HAL_RTC_MSPINIT_CB_ID                Msp Init callback ID
  446.   *          @arg @ref HAL_RTC_MSPDEINIT_CB_ID              Msp DeInit callback ID
  447.   * @param  pCallback pointer to the Callback function
  448.   * @retval HAL status
  449.   */
  450. HAL_StatusTypeDef HAL_RTC_RegisterCallback(RTC_HandleTypeDef *hrtc, HAL_RTC_CallbackIDTypeDef CallbackID, pRTC_CallbackTypeDef pCallback)
  451. {
  452.   HAL_StatusTypeDef status = HAL_OK;
  453.  
  454.   if (pCallback == NULL)
  455.   {
  456.     return HAL_ERROR;
  457.   }
  458.  
  459.   /* Process locked */
  460.   __HAL_LOCK(hrtc);
  461.  
  462.   if (HAL_RTC_STATE_READY == hrtc->State)
  463.   {
  464.     switch (CallbackID)
  465.     {
  466.       case HAL_RTC_ALARM_A_EVENT_CB_ID :
  467.         hrtc->AlarmAEventCallback = pCallback;
  468.         break;
  469.  
  470.       case HAL_RTC_TIMESTAMP_EVENT_CB_ID :
  471.         hrtc->TimeStampEventCallback = pCallback;
  472.         break;
  473.  
  474. #if defined(RTC_WAKEUP_SUPPORT)
  475.       case HAL_RTC_WAKEUPTIMER_EVENT_CB_ID :
  476.         hrtc->WakeUpTimerEventCallback = pCallback;
  477.         break;
  478. #endif /* RTC_WAKEUP_SUPPORT */
  479.       case HAL_RTC_TAMPER1_EVENT_CB_ID :
  480.         hrtc->Tamper1EventCallback = pCallback;
  481.         break;
  482.  
  483.       case HAL_RTC_TAMPER2_EVENT_CB_ID :
  484.         hrtc->Tamper2EventCallback = pCallback;
  485.         break;
  486.  
  487. #if defined(RTC_TAMPER3_SUPPORT)
  488.       case HAL_RTC_TAMPER3_EVENT_CB_ID :
  489.         hrtc->Tamper3EventCallback = pCallback;
  490.         break;
  491. #endif /* RTC_TAMPER3_SUPPORT   */
  492.       case HAL_RTC_MSPINIT_CB_ID :
  493.         hrtc->MspInitCallback = pCallback;
  494.         break;
  495.  
  496.       case HAL_RTC_MSPDEINIT_CB_ID :
  497.         hrtc->MspDeInitCallback = pCallback;
  498.         break;
  499.  
  500.       default :
  501.         /* Return error status */
  502.         status =  HAL_ERROR;
  503.         break;
  504.     }
  505.   }
  506.   else if (HAL_RTC_STATE_RESET == hrtc->State)
  507.   {
  508.     switch (CallbackID)
  509.     {
  510.       case HAL_RTC_MSPINIT_CB_ID :
  511.         hrtc->MspInitCallback = pCallback;
  512.         break;
  513.  
  514.       case HAL_RTC_MSPDEINIT_CB_ID :
  515.         hrtc->MspDeInitCallback = pCallback;
  516.         break;
  517.  
  518.       default :
  519.         /* Return error status */
  520.         status =  HAL_ERROR;
  521.         break;
  522.     }
  523.   }
  524.   else
  525.   {
  526.     /* Return error status */
  527.     status =  HAL_ERROR;
  528.   }
  529.  
  530.   /* Release Lock */
  531.   __HAL_UNLOCK(hrtc);
  532.  
  533.   return status;
  534. }
  535.  
  536. /**
  537.   * @brief  Unregister an RTC Callback
  538.   *         RTC callabck is redirected to the weak predefined callback
  539.   * @param  hrtc RTC handle
  540.   * @param  CallbackID ID of the callback to be unregistered
  541.   *         This parameter can be one of the following values:
  542.   *          @arg @ref HAL_RTC_ALARM_A_EVENT_CB_ID          Alarm A Event Callback ID
  543.   *          @arg @ref HAL_RTC_TIMESTAMP_EVENT_CB_ID        TimeStamp Event Callback ID
  544.   *          @arg @ref HAL_RTC_WAKEUPTIMER_EVENT_CB_ID      WakeUp Timer Event Callback ID
  545.   *          @arg @ref HAL_RTC_TAMPER1_EVENT_CB_ID          Tamper 1 Callback ID
  546.   *          @arg @ref HAL_RTC_TAMPER2_EVENT_CB_ID          Tamper 2 Callback ID
  547.   *          @arg @ref HAL_RTC_TAMPER3_EVENT_CB_ID          Tamper 3 Callback ID
  548.   *          @arg @ref HAL_RTC_MSPINIT_CB_ID Msp Init callback ID
  549.   *          @arg @ref HAL_RTC_MSPDEINIT_CB_ID Msp DeInit callback ID
  550.   * @retval HAL status
  551.   */
  552. HAL_StatusTypeDef HAL_RTC_UnRegisterCallback(RTC_HandleTypeDef *hrtc, HAL_RTC_CallbackIDTypeDef CallbackID)
  553. {
  554.   HAL_StatusTypeDef status = HAL_OK;
  555.  
  556.   /* Process locked */
  557.   __HAL_LOCK(hrtc);
  558.  
  559.   if (HAL_RTC_STATE_READY == hrtc->State)
  560.   {
  561.     switch (CallbackID)
  562.     {
  563.       case HAL_RTC_ALARM_A_EVENT_CB_ID :
  564.         hrtc->AlarmAEventCallback = HAL_RTC_AlarmAEventCallback;         /* Legacy weak AlarmAEventCallback    */
  565.         break;
  566.  
  567.       case HAL_RTC_TIMESTAMP_EVENT_CB_ID :
  568.         hrtc->TimeStampEventCallback = HAL_RTCEx_TimeStampEventCallback;    /* Legacy weak TimeStampEventCallback    */
  569.         break;
  570. #if defined(RTC_WAKEUP_SUPPORT)
  571.       case HAL_RTC_WAKEUPTIMER_EVENT_CB_ID :
  572.         hrtc->WakeUpTimerEventCallback = HAL_RTCEx_WakeUpTimerEventCallback; /* Legacy weak WakeUpTimerEventCallback */
  573.         break;
  574. #endif  /* RTC_WAKEUP_SUPPORT */
  575.       case HAL_RTC_TAMPER1_EVENT_CB_ID :
  576.         hrtc->Tamper1EventCallback = HAL_RTCEx_Tamper1EventCallback;         /* Legacy weak Tamper1EventCallback   */
  577.         break;
  578.  
  579.       case HAL_RTC_TAMPER2_EVENT_CB_ID :
  580.         hrtc->Tamper2EventCallback = HAL_RTCEx_Tamper2EventCallback;         /* Legacy weak Tamper2EventCallback         */
  581.         break;
  582. #if defined( RTC_TAMPER3_SUPPORT)
  583.       case HAL_RTC_TAMPER3_EVENT_CB_ID :
  584.         hrtc->Tamper3EventCallback = HAL_RTCEx_Tamper3EventCallback;         /* Legacy weak Tamper3EventCallback         */
  585.         break;
  586. #endif /* RTC_TAMPER3_SUPPORT */
  587.       case HAL_RTC_MSPINIT_CB_ID :
  588.         hrtc->MspInitCallback = HAL_RTC_MspInit;
  589.         break;
  590.  
  591.       case HAL_RTC_MSPDEINIT_CB_ID :
  592.         hrtc->MspDeInitCallback = HAL_RTC_MspDeInit;
  593.         break;
  594.  
  595.       default :
  596.         /* Return error status */
  597.         status =  HAL_ERROR;
  598.         break;
  599.     }
  600.   }
  601.   else if (HAL_RTC_STATE_RESET == hrtc->State)
  602.   {
  603.     switch (CallbackID)
  604.     {
  605.       case HAL_RTC_MSPINIT_CB_ID :
  606.         hrtc->MspInitCallback = HAL_RTC_MspInit;
  607.         break;
  608.  
  609.       case HAL_RTC_MSPDEINIT_CB_ID :
  610.         hrtc->MspDeInitCallback = HAL_RTC_MspDeInit;
  611.         break;
  612.  
  613.       default :
  614.         /* Return error status */
  615.         status =  HAL_ERROR;
  616.         break;
  617.     }
  618.   }
  619.   else
  620.   {
  621.     /* Return error status */
  622.     status =  HAL_ERROR;
  623.   }
  624.  
  625.   /* Release Lock */
  626.   __HAL_UNLOCK(hrtc);
  627.  
  628.   return status;
  629. }
  630. #endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
  631.  
  632. /**
  633.   * @brief  Initialize the RTC MSP.
  634.   * @param  hrtc RTC handle
  635.   * @retval None
  636.   */
  637. __weak void HAL_RTC_MspInit(RTC_HandleTypeDef *hrtc)
  638. {
  639.   /* Prevent unused argument(s) compilation warning */
  640.   UNUSED(hrtc);
  641.  
  642.   /* NOTE : This function should not be modified, when the callback is needed,
  643.             the HAL_RTC_MspInit could be implemented in the user file
  644.    */
  645. }
  646.  
  647. /**
  648.   * @brief  DeInitialize the RTC MSP.
  649.   * @param  hrtc RTC handle
  650.   * @retval None
  651.   */
  652. __weak void HAL_RTC_MspDeInit(RTC_HandleTypeDef *hrtc)
  653. {
  654.   /* Prevent unused argument(s) compilation warning */
  655.   UNUSED(hrtc);
  656.  
  657.   /* NOTE : This function should not be modified, when the callback is needed,
  658.             the HAL_RTC_MspDeInit could be implemented in the user file
  659.    */
  660. }
  661.  
  662. /**
  663.   * @}
  664.   */
  665.  
  666. /** @addtogroup RTC_Exported_Functions_Group2
  667.  *  @brief   RTC Time and Date functions
  668.  *
  669. @verbatim
  670.  ===============================================================================
  671.                  ##### RTC Time and Date functions #####
  672.  ===============================================================================
  673.  
  674.  [..] This section provides functions allowing to configure Time and Date features
  675.  
  676. @endverbatim
  677.   * @{
  678.   */
  679.  
  680. /**
  681.   * @brief  Set RTC current time.
  682.   * @param  hrtc RTC handle
  683.   * @param  sTime Pointer to Time structure
  684.   * @param  Format Specifies the format of the entered parameters.
  685.   *          This parameter can be one of the following values:
  686.   *            @arg RTC_FORMAT_BIN: Binary data format
  687.   *            @arg RTC_FORMAT_BCD: BCD data format
  688.   * @retval HAL status
  689.   */
  690. HAL_StatusTypeDef HAL_RTC_SetTime(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef *sTime, uint32_t Format)
  691. {
  692.   uint32_t tmpreg = 0U;
  693.  
  694.   /* Check the parameters */
  695.   assert_param(IS_RTC_FORMAT(Format));
  696.   assert_param(IS_RTC_DAYLIGHT_SAVING(sTime->DayLightSaving));
  697.   assert_param(IS_RTC_STORE_OPERATION(sTime->StoreOperation));
  698.  
  699.   /* Process Locked */
  700.   __HAL_LOCK(hrtc);
  701.  
  702.   hrtc->State = HAL_RTC_STATE_BUSY;
  703.  
  704.   if (Format == RTC_FORMAT_BIN)
  705.   {
  706.     if ((hrtc->Instance->CR & RTC_CR_FMT) != (uint32_t)RESET)
  707.     {
  708.       assert_param(IS_RTC_HOUR12(sTime->Hours));
  709.       assert_param(IS_RTC_HOURFORMAT12(sTime->TimeFormat));
  710.     }
  711.     else
  712.     {
  713.       sTime->TimeFormat = 0x00U;
  714.       assert_param(IS_RTC_HOUR24(sTime->Hours));
  715.     }
  716.     assert_param(IS_RTC_MINUTES(sTime->Minutes));
  717.     assert_param(IS_RTC_SECONDS(sTime->Seconds));
  718.  
  719.     tmpreg = (uint32_t)(((uint32_t)RTC_ByteToBcd2(sTime->Hours) << 16U) | \
  720.                         ((uint32_t)RTC_ByteToBcd2(sTime->Minutes) << 8U) | \
  721.                         ((uint32_t)RTC_ByteToBcd2(sTime->Seconds)) | \
  722.                         (((uint32_t)sTime->TimeFormat) << 16U));
  723.   }
  724.   else
  725.   {
  726.     if ((hrtc->Instance->CR & RTC_CR_FMT) != (uint32_t)RESET)
  727.     {
  728.       assert_param(IS_RTC_HOUR12(RTC_Bcd2ToByte(sTime->Hours)));
  729.       assert_param(IS_RTC_HOURFORMAT12(sTime->TimeFormat));
  730.     }
  731.     else
  732.     {
  733.       sTime->TimeFormat = 0x00U;
  734.       assert_param(IS_RTC_HOUR24(RTC_Bcd2ToByte(sTime->Hours)));
  735.     }
  736.     assert_param(IS_RTC_MINUTES(RTC_Bcd2ToByte(sTime->Minutes)));
  737.     assert_param(IS_RTC_SECONDS(RTC_Bcd2ToByte(sTime->Seconds)));
  738.     tmpreg = (((uint32_t)(sTime->Hours) << 16U) | \
  739.               ((uint32_t)(sTime->Minutes) << 8U) | \
  740.               ((uint32_t)sTime->Seconds) | \
  741.               ((uint32_t)(sTime->TimeFormat) << 16U));
  742.   }
  743.  
  744.   /* Disable the write protection for RTC registers */
  745.   __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
  746.  
  747.   /* Set Initialization mode */
  748.   if (RTC_EnterInitMode(hrtc) != HAL_OK)
  749.   {
  750.     /* Enable the write protection for RTC registers */
  751.     __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  752.  
  753.     /* Set RTC state */
  754.     hrtc->State = HAL_RTC_STATE_ERROR;
  755.  
  756.     /* Process Unlocked */
  757.     __HAL_UNLOCK(hrtc);
  758.  
  759.     return HAL_ERROR;
  760.   }
  761.   else
  762.   {
  763.     /* Set the RTC_TR register */
  764.     hrtc->Instance->TR = (uint32_t)(tmpreg & RTC_TR_RESERVED_MASK);
  765.  
  766.     /* Clear the bits to be configured */
  767.     hrtc->Instance->CR &= ((uint32_t)~RTC_CR_BKP);
  768.  
  769.     /* Configure the RTC_CR register */
  770.     hrtc->Instance->CR |= (uint32_t)(sTime->DayLightSaving | sTime->StoreOperation);
  771.  
  772.     /* Exit Initialization mode */
  773.     hrtc->Instance->ISR &= ((uint32_t)~RTC_ISR_INIT);
  774.  
  775.     /* If  CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
  776.     if ((hrtc->Instance->CR & RTC_CR_BYPSHAD) == RESET)
  777.     {
  778.       if (HAL_RTC_WaitForSynchro(hrtc) != HAL_OK)
  779.       {
  780.         /* Enable the write protection for RTC registers */
  781.         __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  782.  
  783.         hrtc->State = HAL_RTC_STATE_ERROR;
  784.  
  785.         /* Process Unlocked */
  786.         __HAL_UNLOCK(hrtc);
  787.  
  788.         return HAL_ERROR;
  789.       }
  790.     }
  791.  
  792.     /* Enable the write protection for RTC registers */
  793.     __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  794.  
  795.     hrtc->State = HAL_RTC_STATE_READY;
  796.  
  797.     __HAL_UNLOCK(hrtc);
  798.  
  799.     return HAL_OK;
  800.   }
  801. }
  802.  
  803. /**
  804.   * @brief  Get RTC current time.
  805.   * @param  hrtc RTC handle
  806.   * @param  sTime Pointer to Time structure with Hours, Minutes and Seconds fields returned
  807.   *                with input format (BIN or BCD), also SubSeconds field returning the
  808.   *                RTC_SSR register content and SecondFraction field the Synchronous pre-scaler
  809.   *                factor to be used for second fraction ratio computation.
  810.   * @param  Format Specifies the format of the entered parameters.
  811.   *          This parameter can be one of the following values:
  812.   *            @arg RTC_FORMAT_BIN: Binary data format
  813.   *            @arg RTC_FORMAT_BCD: BCD data format
  814.   * @note  You can use SubSeconds and SecondFraction (sTime structure fields returned) to convert SubSeconds
  815.   *        value in second fraction ratio with time unit following generic formula:
  816.   *        Second fraction ratio * time_unit= [(SecondFraction-SubSeconds)/(SecondFraction+1)] * time_unit
  817.   *        This conversion can be performed only if no shift operation is pending (ie. SHFP=0) when PREDIV_S >= SS
  818.   * @note You must call HAL_RTC_GetDate() after HAL_RTC_GetTime() to unlock the values
  819.   * in the higher-order calendar shadow registers to ensure consistency between the time and date values.
  820.   * Reading RTC current time locks the values in calendar shadow registers until Current date is read
  821.   * to ensure consistency between the time and date values.
  822.   * @retval HAL status
  823.   */
  824. HAL_StatusTypeDef HAL_RTC_GetTime(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef *sTime, uint32_t Format)
  825. {
  826.   uint32_t tmpreg = 0;
  827.  
  828.   /* Check the parameters */
  829.   assert_param(IS_RTC_FORMAT(Format));
  830.  
  831.   /* Get subseconds structure field from the corresponding register*/
  832.   sTime->SubSeconds = (uint32_t)(hrtc->Instance->SSR);
  833.  
  834.   /* Get SecondFraction structure field from the corresponding register field*/
  835.   sTime->SecondFraction = (uint32_t)(hrtc->Instance->PRER & RTC_PRER_PREDIV_S);
  836.  
  837.   /* Get the TR register */
  838.   tmpreg = (uint32_t)(hrtc->Instance->TR & RTC_TR_RESERVED_MASK);
  839.  
  840.   /* Fill the structure fields with the read parameters */
  841.   sTime->Hours = (uint8_t)((tmpreg & (RTC_TR_HT | RTC_TR_HU)) >> 16U);
  842.   sTime->Minutes = (uint8_t)((tmpreg & (RTC_TR_MNT | RTC_TR_MNU)) >> 8U);
  843.   sTime->Seconds = (uint8_t)(tmpreg & (RTC_TR_ST | RTC_TR_SU));
  844.   sTime->TimeFormat = (uint8_t)((tmpreg & (RTC_TR_PM)) >> 16U);
  845.  
  846.   /* Check the input parameters format */
  847.   if (Format == RTC_FORMAT_BIN)
  848.   {
  849.     /* Convert the time structure parameters to Binary format */
  850.     sTime->Hours = (uint8_t)RTC_Bcd2ToByte(sTime->Hours);
  851.     sTime->Minutes = (uint8_t)RTC_Bcd2ToByte(sTime->Minutes);
  852.     sTime->Seconds = (uint8_t)RTC_Bcd2ToByte(sTime->Seconds);
  853.   }
  854.  
  855.   return HAL_OK;
  856. }
  857.  
  858. /**
  859.   * @brief  Set RTC current date.
  860.   * @param  hrtc RTC handle
  861.   * @param  sDate Pointer to date structure
  862.   * @param  Format specifies the format of the entered parameters.
  863.   *          This parameter can be one of the following values:
  864.   *            @arg RTC_FORMAT_BIN: Binary data format
  865.   *            @arg RTC_FORMAT_BCD: BCD data format
  866.   * @retval HAL status
  867.   */
  868. HAL_StatusTypeDef HAL_RTC_SetDate(RTC_HandleTypeDef *hrtc, RTC_DateTypeDef *sDate, uint32_t Format)
  869. {
  870.   uint32_t datetmpreg = 0U;
  871.  
  872.   /* Check the parameters */
  873.   assert_param(IS_RTC_FORMAT(Format));
  874.  
  875.   /* Process Locked */
  876.   __HAL_LOCK(hrtc);
  877.  
  878.   hrtc->State = HAL_RTC_STATE_BUSY;
  879.  
  880.   if ((Format == RTC_FORMAT_BIN) && ((sDate->Month & 0x10U) == 0x10U))
  881.   {
  882.     sDate->Month = (uint8_t)((sDate->Month & (uint8_t)~(0x10U)) + (uint8_t)0x0AU);
  883.   }
  884.  
  885.   assert_param(IS_RTC_WEEKDAY(sDate->WeekDay));
  886.  
  887.   if (Format == RTC_FORMAT_BIN)
  888.   {
  889.     assert_param(IS_RTC_YEAR(sDate->Year));
  890.     assert_param(IS_RTC_MONTH(sDate->Month));
  891.     assert_param(IS_RTC_DATE(sDate->Date));
  892.  
  893.     datetmpreg = (((uint32_t)RTC_ByteToBcd2(sDate->Year) << 16U) | \
  894.                   ((uint32_t)RTC_ByteToBcd2(sDate->Month) << 8U) | \
  895.                   ((uint32_t)RTC_ByteToBcd2(sDate->Date)) | \
  896.                   ((uint32_t)sDate->WeekDay << 13U));
  897.   }
  898.   else
  899.   {
  900.     assert_param(IS_RTC_YEAR(RTC_Bcd2ToByte(sDate->Year)));
  901.     assert_param(IS_RTC_MONTH(RTC_Bcd2ToByte(sDate->Month)));
  902.     assert_param(IS_RTC_DATE(RTC_Bcd2ToByte(sDate->Date)));
  903.  
  904.     datetmpreg = ((((uint32_t)sDate->Year) << 16U) | \
  905.                   (((uint32_t)sDate->Month) << 8U) | \
  906.                   ((uint32_t)sDate->Date) | \
  907.                   (((uint32_t)sDate->WeekDay) << 13U));
  908.   }
  909.  
  910.   /* Disable the write protection for RTC registers */
  911.   __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
  912.  
  913.   /* Set Initialization mode */
  914.   if (RTC_EnterInitMode(hrtc) != HAL_OK)
  915.   {
  916.     /* Enable the write protection for RTC registers */
  917.     __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  918.  
  919.     /* Set RTC state*/
  920.     hrtc->State = HAL_RTC_STATE_ERROR;
  921.  
  922.     /* Process Unlocked */
  923.     __HAL_UNLOCK(hrtc);
  924.  
  925.     return HAL_ERROR;
  926.   }
  927.   else
  928.   {
  929.     /* Set the RTC_DR register */
  930.     hrtc->Instance->DR = (uint32_t)(datetmpreg & RTC_DR_RESERVED_MASK);
  931.  
  932.     /* Exit Initialization mode */
  933.     hrtc->Instance->ISR &= ((uint32_t)~RTC_ISR_INIT);
  934.  
  935.     /* If  CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
  936.     if ((hrtc->Instance->CR & RTC_CR_BYPSHAD) == RESET)
  937.     {
  938.       if (HAL_RTC_WaitForSynchro(hrtc) != HAL_OK)
  939.       {
  940.         /* Enable the write protection for RTC registers */
  941.         __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  942.  
  943.         hrtc->State = HAL_RTC_STATE_ERROR;
  944.  
  945.         /* Process Unlocked */
  946.         __HAL_UNLOCK(hrtc);
  947.  
  948.         return HAL_ERROR;
  949.       }
  950.     }
  951.  
  952.     /* Enable the write protection for RTC registers */
  953.     __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  954.  
  955.     hrtc->State = HAL_RTC_STATE_READY ;
  956.  
  957.     /* Process Unlocked */
  958.     __HAL_UNLOCK(hrtc);
  959.  
  960.     return HAL_OK;
  961.   }
  962. }
  963.  
  964. /**
  965.   * @brief  Get RTC current date.
  966.   * @param  hrtc RTC handle
  967.   * @param  sDate Pointer to Date structure
  968.   * @param  Format Specifies the format of the entered parameters.
  969.   *          This parameter can be one of the following values:
  970.   *            @arg RTC_FORMAT_BIN :  Binary data format
  971.   *            @arg RTC_FORMAT_BCD :  BCD data format
  972.   * @note You must call HAL_RTC_GetDate() after HAL_RTC_GetTime() to unlock the values
  973.   * in the higher-order calendar shadow registers to ensure consistency between the time and date values.
  974.   * Reading RTC current time locks the values in calendar shadow registers until Current date is read.
  975.   * @retval HAL status
  976.   */
  977. HAL_StatusTypeDef HAL_RTC_GetDate(RTC_HandleTypeDef *hrtc, RTC_DateTypeDef *sDate, uint32_t Format)
  978. {
  979.   uint32_t datetmpreg = 0U;
  980.  
  981.   /* Check the parameters */
  982.   assert_param(IS_RTC_FORMAT(Format));
  983.  
  984.   /* Get the DR register */
  985.   datetmpreg = (uint32_t)(hrtc->Instance->DR & RTC_DR_RESERVED_MASK);
  986.  
  987.   /* Fill the structure fields with the read parameters */
  988.   sDate->Year = (uint8_t)((datetmpreg & (RTC_DR_YT | RTC_DR_YU)) >> 16U);
  989.   sDate->Month = (uint8_t)((datetmpreg & (RTC_DR_MT | RTC_DR_MU)) >> 8U);
  990.   sDate->Date = (uint8_t)(datetmpreg & (RTC_DR_DT | RTC_DR_DU));
  991.   sDate->WeekDay = (uint8_t)((datetmpreg & (RTC_DR_WDU)) >> 13U);
  992.  
  993.   /* Check the input parameters format */
  994.   if (Format == RTC_FORMAT_BIN)
  995.   {
  996.     /* Convert the date structure parameters to Binary format */
  997.     sDate->Year = (uint8_t)RTC_Bcd2ToByte(sDate->Year);
  998.     sDate->Month = (uint8_t)RTC_Bcd2ToByte(sDate->Month);
  999.     sDate->Date = (uint8_t)RTC_Bcd2ToByte(sDate->Date);
  1000.   }
  1001.   return HAL_OK;
  1002. }
  1003.  
  1004. /**
  1005.   * @}
  1006.   */
  1007.  
  1008. /** @addtogroup RTC_Exported_Functions_Group3
  1009.  *  @brief   RTC Alarm functions
  1010.  *
  1011. @verbatim
  1012.  ===============================================================================
  1013.                  ##### RTC Alarm functions #####
  1014.  ===============================================================================
  1015.  
  1016.  [..] This section provides functions allowing to configure Alarm feature
  1017.  
  1018. @endverbatim
  1019.   * @{
  1020.   */
  1021. /**
  1022.   * @brief  Set the specified RTC Alarm.
  1023.   * @param  hrtc RTC handle
  1024.   * @param  sAlarm Pointer to Alarm structure
  1025.   * @param  Format Specifies the format of the entered parameters.
  1026.   *          This parameter can be one of the following values:
  1027.   *             @arg RTC_FORMAT_BIN: Binary data format
  1028.   *             @arg RTC_FORMAT_BCD: BCD data format
  1029.   * @retval HAL status
  1030.   */
  1031. HAL_StatusTypeDef HAL_RTC_SetAlarm(RTC_HandleTypeDef *hrtc, RTC_AlarmTypeDef *sAlarm, uint32_t Format)
  1032. {
  1033.   uint32_t tickstart = 0U;
  1034.   uint32_t tmpreg = 0U, subsecondtmpreg = 0U;
  1035.  
  1036.   /* Check the parameters */
  1037.   assert_param(IS_RTC_FORMAT(Format));
  1038.   assert_param(IS_RTC_ALARM(sAlarm->Alarm));
  1039.   assert_param(IS_RTC_ALARM_MASK(sAlarm->AlarmMask));
  1040.   assert_param(IS_RTC_ALARM_DATE_WEEKDAY_SEL(sAlarm->AlarmDateWeekDaySel));
  1041.   assert_param(IS_RTC_ALARM_SUB_SECOND_VALUE(sAlarm->AlarmTime.SubSeconds));
  1042.   assert_param(IS_RTC_ALARM_SUB_SECOND_MASK(sAlarm->AlarmSubSecondMask));
  1043.  
  1044.   /* Process Locked */
  1045.   __HAL_LOCK(hrtc);
  1046.  
  1047.   hrtc->State = HAL_RTC_STATE_BUSY;
  1048.  
  1049.   if (Format == RTC_FORMAT_BIN)
  1050.   {
  1051.     if ((hrtc->Instance->CR & RTC_CR_FMT) != (uint32_t)RESET)
  1052.     {
  1053.       assert_param(IS_RTC_HOUR12(sAlarm->AlarmTime.Hours));
  1054.       assert_param(IS_RTC_HOURFORMAT12(sAlarm->AlarmTime.TimeFormat));
  1055.     }
  1056.     else
  1057.     {
  1058.       sAlarm->AlarmTime.TimeFormat = 0x00U;
  1059.       assert_param(IS_RTC_HOUR24(sAlarm->AlarmTime.Hours));
  1060.     }
  1061.     assert_param(IS_RTC_MINUTES(sAlarm->AlarmTime.Minutes));
  1062.     assert_param(IS_RTC_SECONDS(sAlarm->AlarmTime.Seconds));
  1063.  
  1064.     if (sAlarm->AlarmDateWeekDaySel == RTC_ALARMDATEWEEKDAYSEL_DATE)
  1065.     {
  1066.       assert_param(IS_RTC_ALARM_DATE_WEEKDAY_DATE(sAlarm->AlarmDateWeekDay));
  1067.     }
  1068.     else
  1069.     {
  1070.       assert_param(IS_RTC_ALARM_DATE_WEEKDAY_WEEKDAY(sAlarm->AlarmDateWeekDay));
  1071.     }
  1072.  
  1073.     tmpreg = (((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Hours) << 16U) | \
  1074.               ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Minutes) << 8U) | \
  1075.               ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Seconds)) | \
  1076.               ((uint32_t)(sAlarm->AlarmTime.TimeFormat) << 16U) | \
  1077.               ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmDateWeekDay) << 24U) | \
  1078.               ((uint32_t)sAlarm->AlarmDateWeekDaySel) | \
  1079.               ((uint32_t)sAlarm->AlarmMask));
  1080.   }
  1081.   else
  1082.   {
  1083.     if ((hrtc->Instance->CR & RTC_CR_FMT) != (uint32_t)RESET)
  1084.     {
  1085.       assert_param(IS_RTC_HOUR12(RTC_Bcd2ToByte(sAlarm->AlarmTime.Hours)));
  1086.       assert_param(IS_RTC_HOURFORMAT12(sAlarm->AlarmTime.TimeFormat));
  1087.     }
  1088.     else
  1089.     {
  1090.       sAlarm->AlarmTime.TimeFormat = 0x00U;
  1091.       assert_param(IS_RTC_HOUR24(RTC_Bcd2ToByte(sAlarm->AlarmTime.Hours)));
  1092.     }
  1093.  
  1094.     assert_param(IS_RTC_MINUTES(RTC_Bcd2ToByte(sAlarm->AlarmTime.Minutes)));
  1095.     assert_param(IS_RTC_SECONDS(RTC_Bcd2ToByte(sAlarm->AlarmTime.Seconds)));
  1096.  
  1097.     if (sAlarm->AlarmDateWeekDaySel == RTC_ALARMDATEWEEKDAYSEL_DATE)
  1098.     {
  1099.       assert_param(IS_RTC_ALARM_DATE_WEEKDAY_DATE(RTC_Bcd2ToByte(sAlarm->AlarmDateWeekDay)));
  1100.     }
  1101.     else
  1102.     {
  1103.       assert_param(IS_RTC_ALARM_DATE_WEEKDAY_WEEKDAY(RTC_Bcd2ToByte(sAlarm->AlarmDateWeekDay)));
  1104.     }
  1105.  
  1106.     tmpreg = (((uint32_t)(sAlarm->AlarmTime.Hours) << 16U) | \
  1107.               ((uint32_t)(sAlarm->AlarmTime.Minutes) << 8U) | \
  1108.               ((uint32_t) sAlarm->AlarmTime.Seconds) | \
  1109.               ((uint32_t)(sAlarm->AlarmTime.TimeFormat) << 16U) | \
  1110.               ((uint32_t)(sAlarm->AlarmDateWeekDay) << 24U) | \
  1111.               ((uint32_t)sAlarm->AlarmDateWeekDaySel) | \
  1112.               ((uint32_t)sAlarm->AlarmMask));
  1113.   }
  1114.  
  1115.   /* Configure the Alarm A Sub Second registers */
  1116.   subsecondtmpreg = (uint32_t)((uint32_t)(sAlarm->AlarmTime.SubSeconds) | (uint32_t)(sAlarm->AlarmSubSecondMask));
  1117.  
  1118.   /* Disable the write protection for RTC registers */
  1119.   __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
  1120.  
  1121.   /* Disable the Alarm A interrupt */
  1122.   __HAL_RTC_ALARMA_DISABLE(hrtc);
  1123.  
  1124.   /* In case of interrupt mode is used, the interrupt source must disabled */
  1125.   __HAL_RTC_ALARM_DISABLE_IT(hrtc, RTC_IT_ALRA);
  1126.  
  1127.   tickstart = HAL_GetTick();
  1128.   /* Wait till RTC ALRAWF flag is set and if Time out is reached exit */
  1129.   while (__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRAWF) == RESET)
  1130.   {
  1131.     if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
  1132.     {
  1133.       /* Enable the write protection for RTC registers */
  1134.       __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  1135.  
  1136.       hrtc->State = HAL_RTC_STATE_TIMEOUT;
  1137.  
  1138.       /* Process Unlocked */
  1139.       __HAL_UNLOCK(hrtc);
  1140.  
  1141.       return HAL_TIMEOUT;
  1142.     }
  1143.   }
  1144.  
  1145.   hrtc->Instance->ALRMAR = (uint32_t)tmpreg;
  1146.   /* Configure the Alarm A Sub Second register */
  1147.   hrtc->Instance->ALRMASSR = subsecondtmpreg;
  1148.   /* Configure the Alarm state: Enable Alarm */
  1149.   __HAL_RTC_ALARMA_ENABLE(hrtc);
  1150.  
  1151.   /* Enable the write protection for RTC registers */
  1152.   __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  1153.  
  1154.   /* Change RTC state */
  1155.   hrtc->State = HAL_RTC_STATE_READY;
  1156.  
  1157.   /* Process Unlocked */
  1158.   __HAL_UNLOCK(hrtc);
  1159.  
  1160.   return HAL_OK;
  1161. }
  1162.  
  1163. /**
  1164.   * @brief  Set the specified RTC Alarm with Interrupt.
  1165.   * @param  hrtc RTC handle
  1166.   * @param  sAlarm Pointer to Alarm structure
  1167.   * @param  Format Specifies the format of the entered parameters.
  1168.   *          This parameter can be one of the following values:
  1169.   *             @arg RTC_FORMAT_BIN: Binary data format
  1170.   *             @arg RTC_FORMAT_BCD: BCD data format
  1171.   * @note   The Alarm register can only be written when the corresponding Alarm
  1172.   *         is disabled (Use the HAL_RTC_DeactivateAlarm()).
  1173.   * @note   The HAL_RTC_SetTime() must be called before enabling the Alarm feature.
  1174.   * @retval HAL status
  1175.   */
  1176. HAL_StatusTypeDef HAL_RTC_SetAlarm_IT(RTC_HandleTypeDef *hrtc, RTC_AlarmTypeDef *sAlarm, uint32_t Format)
  1177. {
  1178.   uint32_t tickstart = 0U;
  1179.   uint32_t tmpreg = 0U, subsecondtmpreg = 0U;
  1180.  
  1181.   /* Check the parameters */
  1182.   assert_param(IS_RTC_FORMAT(Format));
  1183.   assert_param(IS_RTC_ALARM(sAlarm->Alarm));
  1184.   assert_param(IS_RTC_ALARM_MASK(sAlarm->AlarmMask));
  1185.   assert_param(IS_RTC_ALARM_DATE_WEEKDAY_SEL(sAlarm->AlarmDateWeekDaySel));
  1186.   assert_param(IS_RTC_ALARM_SUB_SECOND_VALUE(sAlarm->AlarmTime.SubSeconds));
  1187.   assert_param(IS_RTC_ALARM_SUB_SECOND_MASK(sAlarm->AlarmSubSecondMask));
  1188.  
  1189.   /* Process Locked */
  1190.   __HAL_LOCK(hrtc);
  1191.  
  1192.   hrtc->State = HAL_RTC_STATE_BUSY;
  1193.  
  1194.   if (Format == RTC_FORMAT_BIN)
  1195.   {
  1196.     if ((hrtc->Instance->CR & RTC_CR_FMT) != (uint32_t)RESET)
  1197.     {
  1198.       assert_param(IS_RTC_HOUR12(sAlarm->AlarmTime.Hours));
  1199.       assert_param(IS_RTC_HOURFORMAT12(sAlarm->AlarmTime.TimeFormat));
  1200.     }
  1201.     else
  1202.     {
  1203.       sAlarm->AlarmTime.TimeFormat = 0x00U;
  1204.       assert_param(IS_RTC_HOUR24(sAlarm->AlarmTime.Hours));
  1205.     }
  1206.     assert_param(IS_RTC_MINUTES(sAlarm->AlarmTime.Minutes));
  1207.     assert_param(IS_RTC_SECONDS(sAlarm->AlarmTime.Seconds));
  1208.  
  1209.     if (sAlarm->AlarmDateWeekDaySel == RTC_ALARMDATEWEEKDAYSEL_DATE)
  1210.     {
  1211.       assert_param(IS_RTC_ALARM_DATE_WEEKDAY_DATE(sAlarm->AlarmDateWeekDay));
  1212.     }
  1213.     else
  1214.     {
  1215.       assert_param(IS_RTC_ALARM_DATE_WEEKDAY_WEEKDAY(sAlarm->AlarmDateWeekDay));
  1216.     }
  1217.     tmpreg = (((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Hours) << 16U) | \
  1218.               ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Minutes) << 8U) | \
  1219.               ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Seconds)) | \
  1220.               ((uint32_t)(sAlarm->AlarmTime.TimeFormat) << 16U) | \
  1221.               ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmDateWeekDay) << 24U) | \
  1222.               ((uint32_t)sAlarm->AlarmDateWeekDaySel) | \
  1223.               ((uint32_t)sAlarm->AlarmMask));
  1224.   }
  1225.   else
  1226.   {
  1227.     if ((hrtc->Instance->CR & RTC_CR_FMT) != (uint32_t)RESET)
  1228.     {
  1229.       assert_param(IS_RTC_HOUR12(RTC_Bcd2ToByte(sAlarm->AlarmTime.Hours)));
  1230.       assert_param(IS_RTC_HOURFORMAT12(sAlarm->AlarmTime.TimeFormat));
  1231.     }
  1232.     else
  1233.     {
  1234.       sAlarm->AlarmTime.TimeFormat = 0x00U;
  1235.       assert_param(IS_RTC_HOUR24(RTC_Bcd2ToByte(sAlarm->AlarmTime.Hours)));
  1236.     }
  1237.  
  1238.     assert_param(IS_RTC_MINUTES(RTC_Bcd2ToByte(sAlarm->AlarmTime.Minutes)));
  1239.     assert_param(IS_RTC_SECONDS(RTC_Bcd2ToByte(sAlarm->AlarmTime.Seconds)));
  1240.  
  1241.     if (sAlarm->AlarmDateWeekDaySel == RTC_ALARMDATEWEEKDAYSEL_DATE)
  1242.     {
  1243.       assert_param(IS_RTC_ALARM_DATE_WEEKDAY_DATE(RTC_Bcd2ToByte(sAlarm->AlarmDateWeekDay)));
  1244.     }
  1245.     else
  1246.     {
  1247.       assert_param(IS_RTC_ALARM_DATE_WEEKDAY_WEEKDAY(RTC_Bcd2ToByte(sAlarm->AlarmDateWeekDay)));
  1248.     }
  1249.     tmpreg = (((uint32_t)(sAlarm->AlarmTime.Hours) << 16U) | \
  1250.               ((uint32_t)(sAlarm->AlarmTime.Minutes) << 8U) | \
  1251.               ((uint32_t) sAlarm->AlarmTime.Seconds) | \
  1252.               ((uint32_t)(sAlarm->AlarmTime.TimeFormat) << 16U) | \
  1253.               ((uint32_t)(sAlarm->AlarmDateWeekDay) << 24U) | \
  1254.               ((uint32_t)sAlarm->AlarmDateWeekDaySel) | \
  1255.               ((uint32_t)sAlarm->AlarmMask));
  1256.   }
  1257.   /* Configure the Alarm A Sub Second registers */
  1258.   subsecondtmpreg = (uint32_t)((uint32_t)(sAlarm->AlarmTime.SubSeconds) | (uint32_t)(sAlarm->AlarmSubSecondMask));
  1259.  
  1260.   /* Disable the write protection for RTC registers */
  1261.   __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
  1262.  
  1263.   /* Disable the Alarm A interrupt */
  1264.   __HAL_RTC_ALARMA_DISABLE(hrtc);
  1265.  
  1266.   /* Clear flag alarm A */
  1267.   __HAL_RTC_ALARM_CLEAR_FLAG(hrtc, RTC_FLAG_ALRAF);
  1268.  
  1269.   tickstart = HAL_GetTick();
  1270.  
  1271.   /* Wait till RTC ALRAWF flag is set and if Time out is reached exit */
  1272.   while (__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRAWF) == RESET)
  1273.   {
  1274.     if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
  1275.     {
  1276.       /* Enable the write protection for RTC registers */
  1277.       __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  1278.  
  1279.       hrtc->State = HAL_RTC_STATE_TIMEOUT;
  1280.  
  1281.       /* Process Unlocked */
  1282.       __HAL_UNLOCK(hrtc);
  1283.  
  1284.       return HAL_TIMEOUT;
  1285.     }
  1286.   }
  1287.  
  1288.   hrtc->Instance->ALRMAR = (uint32_t)tmpreg;
  1289.   /* Configure the Alarm A Sub Second register */
  1290.   hrtc->Instance->ALRMASSR = subsecondtmpreg;
  1291.   /* Configure the Alarm state: Enable Alarm */
  1292.   __HAL_RTC_ALARMA_ENABLE(hrtc);
  1293.   /* Configure the Alarm interrupt */
  1294.   __HAL_RTC_ALARM_ENABLE_IT(hrtc, RTC_IT_ALRA);
  1295.  
  1296.   /* RTC Alarm Interrupt Configuration: EXTI configuration */
  1297.   __HAL_RTC_ALARM_EXTI_ENABLE_IT();
  1298.  
  1299.   __HAL_RTC_ALARM_EXTI_ENABLE_RISING_EDGE();
  1300.  
  1301.   /* Enable the write protection for RTC registers */
  1302.   __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  1303.  
  1304.   hrtc->State = HAL_RTC_STATE_READY;
  1305.  
  1306.   /* Process Unlocked */
  1307.   __HAL_UNLOCK(hrtc);
  1308.  
  1309.   return HAL_OK;
  1310. }
  1311.  
  1312. /**
  1313.   * @brief  Deactivate the specified RTC Alarm.
  1314.   * @param  hrtc RTC handle
  1315.   * @param  Alarm Specifies the Alarm.
  1316.   *          This parameter can be one of the following values:
  1317.   *            @arg RTC_ALARM_A:  AlarmA
  1318.   * @retval HAL status
  1319.   */
  1320. HAL_StatusTypeDef HAL_RTC_DeactivateAlarm(RTC_HandleTypeDef *hrtc, uint32_t Alarm)
  1321. {
  1322.   uint32_t tickstart = 0U;
  1323.  
  1324.   /* Check the parameters */
  1325.   assert_param(IS_RTC_ALARM(Alarm));
  1326.  
  1327.   /* Process Locked */
  1328.   __HAL_LOCK(hrtc);
  1329.  
  1330.   hrtc->State = HAL_RTC_STATE_BUSY;
  1331.  
  1332.   /* Disable the write protection for RTC registers */
  1333.   __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
  1334.  
  1335.   __HAL_RTC_ALARMA_DISABLE(hrtc);
  1336.  
  1337.   /* In case of interrupt mode is used, the interrupt source must disabled */
  1338.   __HAL_RTC_ALARM_DISABLE_IT(hrtc, RTC_IT_ALRA);
  1339.  
  1340.   tickstart = HAL_GetTick();
  1341.  
  1342.   /* Wait till RTC ALRxWF flag is set and if Time out is reached exit */
  1343.   while (__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRAWF) == RESET)
  1344.   {
  1345.     if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
  1346.     {
  1347.       /* Enable the write protection for RTC registers */
  1348.       __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  1349.  
  1350.       hrtc->State = HAL_RTC_STATE_TIMEOUT;
  1351.  
  1352.       /* Process Unlocked */
  1353.       __HAL_UNLOCK(hrtc);
  1354.  
  1355.       return HAL_TIMEOUT;
  1356.     }
  1357.   }
  1358.   /* Enable the write protection for RTC registers */
  1359.   __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
  1360.  
  1361.   hrtc->State = HAL_RTC_STATE_READY;
  1362.  
  1363.   /* Process Unlocked */
  1364.   __HAL_UNLOCK(hrtc);
  1365.  
  1366.   return HAL_OK;
  1367. }
  1368.  
  1369. /**
  1370.   * @brief  Get the RTC Alarm value and masks.
  1371.   * @param  hrtc RTC handle
  1372.   * @param  sAlarm Pointer to Date structure
  1373.   * @param  Alarm Specifies the Alarm.
  1374.   *          This parameter can be one of the following values:
  1375.   *             @arg RTC_ALARM_A: AlarmA
  1376.   * @param  Format Specifies the format of the entered parameters.
  1377.   *          This parameter can be one of the following values:
  1378.   *             @arg RTC_FORMAT_BIN: Binary data format
  1379.   *             @arg RTC_FORMAT_BCD: BCD data format
  1380.   * @retval HAL status
  1381.   */
  1382. HAL_StatusTypeDef HAL_RTC_GetAlarm(RTC_HandleTypeDef *hrtc, RTC_AlarmTypeDef *sAlarm, uint32_t Alarm, uint32_t Format)
  1383. {
  1384.   uint32_t tmpreg = 0U, subsecondtmpreg = 0U;
  1385.  
  1386.   /* Check the parameters */
  1387.   assert_param(IS_RTC_FORMAT(Format));
  1388.   assert_param(IS_RTC_ALARM(Alarm));
  1389.  
  1390.   sAlarm->Alarm = RTC_ALARM_A;
  1391.  
  1392.   tmpreg = (uint32_t)(hrtc->Instance->ALRMAR);
  1393.   subsecondtmpreg = (uint32_t)((hrtc->Instance->ALRMASSR) & RTC_ALRMASSR_SS);
  1394.  
  1395.   /* Fill the structure with the read parameters */
  1396.   sAlarm->AlarmTime.Hours = (uint32_t)((tmpreg & (RTC_ALRMAR_HT | RTC_ALRMAR_HU)) >> 16U);
  1397.   sAlarm->AlarmTime.Minutes = (uint32_t)((tmpreg & (RTC_ALRMAR_MNT | RTC_ALRMAR_MNU)) >> 8U);
  1398.   sAlarm->AlarmTime.Seconds = (uint32_t)(tmpreg & (RTC_ALRMAR_ST | RTC_ALRMAR_SU));
  1399.   sAlarm->AlarmTime.TimeFormat = (uint32_t)((tmpreg & RTC_ALRMAR_PM) >> 16U);
  1400.   sAlarm->AlarmTime.SubSeconds = (uint32_t) subsecondtmpreg;
  1401.   sAlarm->AlarmDateWeekDay = (uint32_t)((tmpreg & (RTC_ALRMAR_DT | RTC_ALRMAR_DU)) >> 24U);
  1402.   sAlarm->AlarmDateWeekDaySel = (uint32_t)(tmpreg & RTC_ALRMAR_WDSEL);
  1403.   sAlarm->AlarmMask = (uint32_t)(tmpreg & RTC_ALARMMASK_ALL);
  1404.  
  1405.   if (Format == RTC_FORMAT_BIN)
  1406.   {
  1407.     sAlarm->AlarmTime.Hours = RTC_Bcd2ToByte(sAlarm->AlarmTime.Hours);
  1408.     sAlarm->AlarmTime.Minutes = RTC_Bcd2ToByte(sAlarm->AlarmTime.Minutes);
  1409.     sAlarm->AlarmTime.Seconds = RTC_Bcd2ToByte(sAlarm->AlarmTime.Seconds);
  1410.     sAlarm->AlarmDateWeekDay = RTC_Bcd2ToByte(sAlarm->AlarmDateWeekDay);
  1411.   }
  1412.  
  1413.   return HAL_OK;
  1414. }
  1415.  
  1416. /**
  1417.   * @brief  Handle Alarm interrupt request.
  1418.   * @param  hrtc RTC handle
  1419.   * @retval None
  1420.   */
  1421. void HAL_RTC_AlarmIRQHandler(RTC_HandleTypeDef *hrtc)
  1422. {
  1423.   /* Get the AlarmA interrupt source enable status */
  1424.   if (__HAL_RTC_ALARM_GET_IT_SOURCE(hrtc, RTC_IT_ALRA) != RESET)
  1425.   {
  1426.     /* Get the pending status of the AlarmA Interrupt */
  1427.     if (__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRAF) != RESET)
  1428.     {
  1429.       /* AlarmA callback */
  1430. #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
  1431.       hrtc->AlarmAEventCallback(hrtc);
  1432. #else
  1433.       HAL_RTC_AlarmAEventCallback(hrtc);
  1434. #endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
  1435.  
  1436.       /* Clear the AlarmA interrupt pending bit */
  1437.       __HAL_RTC_ALARM_CLEAR_FLAG(hrtc, RTC_FLAG_ALRAF);
  1438.     }
  1439.   }
  1440.  
  1441.   /* Clear the EXTI's line Flag for RTC Alarm */
  1442.   __HAL_RTC_ALARM_EXTI_CLEAR_FLAG();
  1443.  
  1444.   /* Change RTC state */
  1445.   hrtc->State = HAL_RTC_STATE_READY;
  1446. }
  1447.  
  1448. /**
  1449.   * @brief  Alarm A callback.
  1450.   * @param  hrtc RTC handle
  1451.   * @retval None
  1452.   */
  1453. __weak void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
  1454. {
  1455.   /* Prevent unused argument(s) compilation warning */
  1456.   UNUSED(hrtc);
  1457.  
  1458.   /* NOTE : This function should not be modified, when the callback is needed,
  1459.             the HAL_RTC_AlarmAEventCallback could be implemented in the user file
  1460.    */
  1461. }
  1462.  
  1463. /**
  1464.   * @brief  Handle AlarmA Polling request.
  1465.   * @param  hrtc RTC handle
  1466.   * @param  Timeout Timeout duration
  1467.   * @retval HAL status
  1468.   */
  1469. HAL_StatusTypeDef HAL_RTC_PollForAlarmAEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
  1470. {
  1471.  
  1472.   uint32_t tickstart = HAL_GetTick();
  1473.  
  1474.   while (__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRAF) == RESET)
  1475.   {
  1476.     if (Timeout != HAL_MAX_DELAY)
  1477.     {
  1478.       if ((Timeout == 0U) || ((HAL_GetTick() - tickstart) > Timeout))
  1479.       {
  1480.         hrtc->State = HAL_RTC_STATE_TIMEOUT;
  1481.         return HAL_TIMEOUT;
  1482.       }
  1483.     }
  1484.   }
  1485.  
  1486.   /* Clear the Alarm interrupt pending bit */
  1487.   __HAL_RTC_ALARM_CLEAR_FLAG(hrtc, RTC_FLAG_ALRAF);
  1488.  
  1489.   /* Change RTC state */
  1490.   hrtc->State = HAL_RTC_STATE_READY;
  1491.  
  1492.   return HAL_OK;
  1493. }
  1494.  
  1495. /**
  1496.   * @}
  1497.   */
  1498.  
  1499. /** @addtogroup RTC_Exported_Functions_Group4
  1500.  *  @brief   Peripheral Control functions
  1501.  *
  1502. @verbatim
  1503.  ===============================================================================
  1504.                      ##### Peripheral Control functions #####
  1505.  ===============================================================================
  1506.     [..]
  1507.     This subsection provides functions allowing to
  1508.       (+) Wait for RTC Time and Date Synchronization
  1509.  
  1510. @endverbatim
  1511.   * @{
  1512.   */
  1513.  
  1514. /**
  1515.   * @brief  Wait until the RTC Time and Date registers (RTC_TR and RTC_DR) are
  1516.   *         synchronized with RTC APB clock.
  1517.   * @note   The RTC Resynchronization mode is write protected, use the
  1518.   *         __HAL_RTC_WRITEPROTECTION_DISABLE() before calling this function.
  1519.   * @note   To read the calendar through the shadow registers after Calendar
  1520.   *         initialization, calendar update or after wakeup from low power modes
  1521.   *         the software must first clear the RSF flag.
  1522.   *         The software must then wait until it is set again before reading
  1523.   *         the calendar, which means that the calendar registers have been
  1524.   *         correctly copied into the RTC_TR and RTC_DR shadow registers.
  1525.   * @param  hrtc RTC handle
  1526.   * @retval HAL status
  1527.   */
  1528. HAL_StatusTypeDef HAL_RTC_WaitForSynchro(RTC_HandleTypeDef *hrtc)
  1529. {
  1530.   uint32_t tickstart = 0U;
  1531.  
  1532.   /* Clear RSF flag */
  1533.   hrtc->Instance->ISR &= (uint32_t)RTC_RSF_MASK;
  1534.  
  1535.   tickstart = HAL_GetTick();
  1536.  
  1537.   /* Wait the registers to be synchronised */
  1538.   while ((hrtc->Instance->ISR & RTC_ISR_RSF) == (uint32_t)RESET)
  1539.   {
  1540.     if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
  1541.     {
  1542.       return HAL_TIMEOUT;
  1543.     }
  1544.   }
  1545.  
  1546.   return HAL_OK;
  1547. }
  1548.  
  1549. /**
  1550.   * @}
  1551.   */
  1552.  
  1553. /** @addtogroup RTC_Exported_Functions_Group5
  1554.  *  @brief   Peripheral State functions
  1555.  *
  1556. @verbatim
  1557.  ===============================================================================
  1558.                      ##### Peripheral State functions #####
  1559.  ===============================================================================
  1560.     [..]
  1561.     This subsection provides functions allowing to
  1562.       (+) Get RTC state
  1563.  
  1564. @endverbatim
  1565.   * @{
  1566.   */
  1567. /**
  1568.   * @brief  Return the RTC handle state.
  1569.   * @param  hrtc RTC handle
  1570.   * @retval HAL state
  1571.   */
  1572. HAL_RTCStateTypeDef HAL_RTC_GetState(RTC_HandleTypeDef *hrtc)
  1573. {
  1574.   /* Return RTC handle state */
  1575.   return hrtc->State;
  1576. }
  1577.  
  1578. /**
  1579.   * @}
  1580.   */
  1581.  
  1582. /**
  1583.   * @}
  1584.   */
  1585.  
  1586. /** @addtogroup RTC_Private_Functions
  1587.   * @{
  1588.   */
  1589. /**
  1590.   * @brief  Enter the RTC Initialization mode.
  1591.   * @note   The RTC Initialization mode is write protected, use the
  1592.   *         __HAL_RTC_WRITEPROTECTION_DISABLE() before calling this function.
  1593.   * @param  hrtc RTC handle
  1594.   * @retval HAL status
  1595.   */
  1596. HAL_StatusTypeDef RTC_EnterInitMode(RTC_HandleTypeDef *hrtc)
  1597. {
  1598.   uint32_t tickstart = 0U;
  1599.  
  1600.   /* Check if the Initialization mode is set */
  1601.   if ((hrtc->Instance->ISR & RTC_ISR_INITF) == (uint32_t)RESET)
  1602.   {
  1603.     /* Set the Initialization mode */
  1604.     hrtc->Instance->ISR = (uint32_t)RTC_INIT_MASK;
  1605.  
  1606.     tickstart = HAL_GetTick();
  1607.  
  1608.     /* Wait till RTC is in INIT state and if Time out is reached exit */
  1609.     while ((hrtc->Instance->ISR & RTC_ISR_INITF) == (uint32_t)RESET)
  1610.     {
  1611.       if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
  1612.       {
  1613.         return HAL_TIMEOUT;
  1614.       }
  1615.     }
  1616.   }
  1617.  
  1618.   return HAL_OK;
  1619. }
  1620.  
  1621.  
  1622. /**
  1623.   * @brief  Convert a 2 digit decimal to BCD format.
  1624.   * @param  Value Byte to be converted
  1625.   * @retval Converted byte
  1626.   */
  1627. uint8_t RTC_ByteToBcd2(uint8_t Value)
  1628. {
  1629.   uint32_t bcdhigh = 0U;
  1630.  
  1631.   while (Value >= 10U)
  1632.   {
  1633.     bcdhigh++;
  1634.     Value -= 10U;
  1635.   }
  1636.  
  1637.   return ((uint8_t)(bcdhigh << 4U) | Value);
  1638. }
  1639.  
  1640. /**
  1641.   * @brief  Convert from 2 digit BCD to Binary.
  1642.   * @param  Value BCD value to be converted
  1643.   * @retval Converted word
  1644.   */
  1645. uint8_t RTC_Bcd2ToByte(uint8_t Value)
  1646. {
  1647.   uint32_t tmp = 0U;
  1648.   tmp = ((uint8_t)(Value & (uint8_t)0xF0U) >> (uint8_t)0x4U) * 10U;
  1649.   return (tmp + (Value & (uint8_t)0x0FU));
  1650. }
  1651. /**
  1652.   * @}
  1653.   */
  1654.  
  1655. #endif /* HAL_RTC_MODULE_ENABLED */
  1656.  
  1657. /**
  1658.   * @}
  1659.   */
  1660.  
  1661.  
  1662. /**
  1663.   * @}
  1664.   */
  1665.  
  1666. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  1667.