Based on user/ft/stm32-dev-bridge, without the project-specific build

directories (and duplicated code).

1 files changed, 1710 insertions, 0 deletions

diff --git a/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rtc_ex.c b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rtc_ex.c
new file mode 100644
index 0000000..cafbe8a
--- /dev/null
+++ b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rtc_ex.c
@@ -0,0 +1,1710 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_hal_rtc_ex.c
+  * @author  MCD Application Team
+  * @version V1.3.2
+  * @date    26-June-2015
+  * @brief   RTC HAL module driver.
+  *          This file provides firmware functions to manage the following
+  *          functionalities of the Real Time Clock (RTC) Extension peripheral:
+  *           + RTC Time Stamp functions
+  *           + RTC Tamper functions
+  *           + RTC Wake-up functions
+  *           + Extension Control functions
+  *           + Extension RTC features functions
+  *
+  @verbatim
+  ==============================================================================
+                  ##### How to use this driver #####
+  ==============================================================================
+  [..]
+    (+) Enable the RTC domain access.
+    (+) Configure the RTC Prescaler (Asynchronous and Synchronous) and RTC hour
+        format using the HAL_RTC_Init() function.
+
+  *** RTC Wake-up configuration ***
+  ================================
+  [..]
+    (+) To configure the RTC Wake-up Clock source and Counter use the HAL_RTC_SetWakeUpTimer()
+        function. You can also configure the RTC Wake-up timer in interrupt mode
+        using the HAL_RTC_SetWakeUpTimer_IT() function.
+    (+) To read the RTC Wake-up Counter register, use the HAL_RTC_GetWakeUpTimer()
+        function.
+
+  *** TimeStamp configuration ***
+  ===============================
+  [..]
+    (+) Configure the RTC_AFx trigger and enable the RTC TimeStamp using the
+        HAL_RTC_SetTimeStamp() function. You can also configure the RTC TimeStamp with
+        interrupt mode using the HAL_RTC_SetTimeStamp_IT() function.
+    (+) To read the RTC TimeStamp Time and Date register, use the HAL_RTC_GetTimeStamp()
+        function.
+    (+) The TIMESTAMP alternate function can be mapped either to RTC_AF1 (PC13)
+        or RTC_AF2 (PI8 or PA0 only for STM32F446xx devices) depending on the value of TSINSEL bit in
+        RTC_TAFCR register. The corresponding pin is also selected by HAL_RTC_SetTimeStamp()
+        or HAL_RTC_SetTimeStamp_IT() function.
+
+  *** Tamper configuration ***
+  ============================
+  [..]
+    (+) Enable the RTC Tamper and configure the Tamper filter count, trigger Edge
+        or Level according to the Tamper filter (if equal to 0 Edge else Level)
+        value, sampling frequency, precharge or discharge and Pull-UP using the
+        HAL_RTC_SetTamper() function. You can configure RTC Tamper in interrupt
+        mode using HAL_RTC_SetTamper_IT() function.
+    (+) The TAMPER1 alternate function can be mapped either to RTC_AF1 (PC13)
+        or RTC_AF2 (PI8 or PA0 only for STM32F446xx devices) depending on the value of TAMP1INSEL bit in
+        RTC_TAFCR register. The corresponding pin is also selected by HAL_RTC_SetTamper()
+        or HAL_RTC_SetTamper_IT() function.
+
+  *** Backup Data Registers configuration ***
+  ===========================================
+  [..]
+    (+) To write to the RTC Backup Data registers, use the HAL_RTC_BKUPWrite()
+        function.
+    (+) To read the RTC Backup Data registers, use the HAL_RTC_BKUPRead()
+        function.
+
+   @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_hal.h"
+
+/** @addtogroup STM32F4xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup RTCEx RTCEx
+  * @brief RTC HAL module driver
+  * @{
+  */
+
+#ifdef HAL_RTC_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup RTCEx_Exported_Functions RTCEx Exported Functions
+  * @{
+  */
+
+/** @defgroup RTCEx_Exported_Functions_Group1 RTC TimeStamp and Tamper functions
+ *  @brief   RTC TimeStamp and Tamper functions
+ *
+@verbatim
+ ===============================================================================
+                 ##### RTC TimeStamp and Tamper functions #####
+ ===============================================================================
+
+ [..] This section provides functions allowing to configure TimeStamp feature
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Sets TimeStamp.
+  * @note   This API must be called before enabling the TimeStamp feature.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  TimeStampEdge: Specifies the pin edge on which the TimeStamp is
+  *         activated.
+  *          This parameter can be one of the following values:
+  *             @arg RTC_TIMESTAMPEDGE_RISING: the Time stamp event occurs on the
+  *                                        rising edge of the related pin.
+  *             @arg RTC_TIMESTAMPEDGE_FALLING: the Time stamp event occurs on the
+  *                                         falling edge of the related pin.
+  * @param  RTC_TimeStampPin: specifies the RTC TimeStamp Pin.
+  *          This parameter can be one of the following values:
+  *             @arg RTC_TIMESTAMPPIN_DEFAULT: PC13 is selected as RTC TimeStamp Pin.
+  *             @arg RTC_TIMESTAMPPIN_POS1: PI8/PA0 is selected as RTC TimeStamp Pin.
+  *             (PI8 for all STM32 devices except for STM32F446xx devices the PA0 is used)
+  *             @arg RTC_TIMESTAMPPIN_PA0: PA0 is selected as RTC TimeStamp Pin only for STM32F446xx devices
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp(RTC_HandleTypeDef *hrtc, uint32_t TimeStampEdge, uint32_t RTC_TimeStampPin)
+{
+  uint32_t tmpreg = 0;
+
+  /* Check the parameters */
+  assert_param(IS_TIMESTAMP_EDGE(TimeStampEdge));
+  assert_param(IS_RTC_TIMESTAMP_PIN(RTC_TimeStampPin));
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Get the RTC_CR register and clear the bits to be configured */
+  tmpreg = (uint32_t)(hrtc->Instance->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
+
+  tmpreg|= TimeStampEdge;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  hrtc->Instance->TAFCR &= (uint32_t)~RTC_TAFCR_TSINSEL;
+  hrtc->Instance->TAFCR |= (uint32_t)(RTC_TimeStampPin);
+
+  /* Configure the Time Stamp TSEDGE and Enable bits */
+  hrtc->Instance->CR = (uint32_t)tmpreg;
+
+  __HAL_RTC_TIMESTAMP_ENABLE(hrtc);
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Sets TimeStamp with Interrupt.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @note   This API must be called before enabling the TimeStamp feature.
+  * @param  TimeStampEdge: Specifies the pin edge on which the TimeStamp is
+  *         activated.
+  *          This parameter can be one of the following values:
+  *             @arg RTC_TIMESTAMPEDGE_RISING: the Time stamp event occurs on the
+  *                                        rising edge of the related pin.
+  *             @arg RTC_TIMESTAMPEDGE_FALLING: the Time stamp event occurs on the
+  *                                         falling edge of the related pin.
+  * @param  RTC_TimeStampPin: Specifies the RTC TimeStamp Pin.
+  *          This parameter can be one of the following values:
+  *             @arg RTC_TIMESTAMPPIN_PC13: PC13 is selected as RTC TimeStamp Pin.
+  *             @arg RTC_TIMESTAMPPIN_PI8: PI8 is selected as RTC TimeStamp Pin. (not applicable in the case of STM32F446xx devices)
+  *             @arg RTC_TIMESTAMPPIN_PA0: PA0 is selected as RTC TimeStamp Pin only for STM32F446xx devices
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp_IT(RTC_HandleTypeDef *hrtc, uint32_t TimeStampEdge, uint32_t RTC_TimeStampPin)
+{
+  uint32_t tmpreg = 0;
+
+  /* Check the parameters */
+  assert_param(IS_TIMESTAMP_EDGE(TimeStampEdge));
+  assert_param(IS_RTC_TIMESTAMP_PIN(RTC_TimeStampPin));
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Get the RTC_CR register and clear the bits to be configured */
+  tmpreg = (uint32_t)(hrtc->Instance->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
+
+  tmpreg |= TimeStampEdge;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Configure the Time Stamp TSEDGE and Enable bits */
+  hrtc->Instance->CR = (uint32_t)tmpreg;
+
+  hrtc->Instance->TAFCR &= (uint32_t)~RTC_TAFCR_TSINSEL;
+  hrtc->Instance->TAFCR |= (uint32_t)(RTC_TimeStampPin);
+
+  __HAL_RTC_TIMESTAMP_ENABLE(hrtc);
+
+  /* Enable IT timestamp */
+  __HAL_RTC_TIMESTAMP_ENABLE_IT(hrtc,RTC_IT_TS);
+
+  /* RTC timestamp Interrupt Configuration: EXTI configuration */
+  __HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_IT();
+
+  EXTI->RTSR |= RTC_EXTI_LINE_TAMPER_TIMESTAMP_EVENT;
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Deactivates TimeStamp.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_DeactivateTimeStamp(RTC_HandleTypeDef *hrtc)
+{
+  uint32_t tmpreg = 0;
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* In case of interrupt mode is used, the interrupt source must disabled */
+  __HAL_RTC_TIMESTAMP_DISABLE_IT(hrtc, RTC_IT_TS);
+
+  /* Get the RTC_CR register and clear the bits to be configured */
+  tmpreg = (uint32_t)(hrtc->Instance->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
+
+  /* Configure the Time Stamp TSEDGE and Enable bits */
+  hrtc->Instance->CR = (uint32_t)tmpreg;
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Gets the RTC TimeStamp value.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  sTimeStamp: Pointer to Time structure
+  * @param  sTimeStampDate: Pointer to Date structure
+  * @param  Format: specifies the format of the entered parameters.
+  *          This parameter can be one of the following values:
+  *             RTC_FORMAT_BIN: Binary data format
+  *             RTC_FORMAT_BCD: BCD data format
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_GetTimeStamp(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef* sTimeStamp, RTC_DateTypeDef* sTimeStampDate, uint32_t Format)
+{
+  uint32_t tmptime = 0, tmpdate = 0;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_FORMAT(Format));
+
+  /* Get the TimeStamp time and date registers values */
+  tmptime = (uint32_t)(hrtc->Instance->TSTR & RTC_TR_RESERVED_MASK);
+  tmpdate = (uint32_t)(hrtc->Instance->TSDR & RTC_DR_RESERVED_MASK);
+
+  /* Fill the Time structure fields with the read parameters */
+  sTimeStamp->Hours = (uint8_t)((tmptime & (RTC_TR_HT | RTC_TR_HU)) >> 16);
+  sTimeStamp->Minutes = (uint8_t)((tmptime & (RTC_TR_MNT | RTC_TR_MNU)) >> 8);
+  sTimeStamp->Seconds = (uint8_t)(tmptime & (RTC_TR_ST | RTC_TR_SU));
+  sTimeStamp->TimeFormat = (uint8_t)((tmptime & (RTC_TR_PM)) >> 16);
+  sTimeStamp->SubSeconds = (uint32_t) hrtc->Instance->TSSSR;
+
+  /* Fill the Date structure fields with the read parameters */
+  sTimeStampDate->Year = 0;
+  sTimeStampDate->Month = (uint8_t)((tmpdate & (RTC_DR_MT | RTC_DR_MU)) >> 8);
+  sTimeStampDate->Date = (uint8_t)(tmpdate & (RTC_DR_DT | RTC_DR_DU));
+  sTimeStampDate->WeekDay = (uint8_t)((tmpdate & (RTC_DR_WDU)) >> 13);
+
+  /* Check the input parameters format */
+  if(Format == RTC_FORMAT_BIN)
+  {
+    /* Convert the TimeStamp structure parameters to Binary format */
+    sTimeStamp->Hours = (uint8_t)RTC_Bcd2ToByte(sTimeStamp->Hours);
+    sTimeStamp->Minutes = (uint8_t)RTC_Bcd2ToByte(sTimeStamp->Minutes);
+    sTimeStamp->Seconds = (uint8_t)RTC_Bcd2ToByte(sTimeStamp->Seconds);
+
+    /* Convert the DateTimeStamp structure parameters to Binary format */
+    sTimeStampDate->Month = (uint8_t)RTC_Bcd2ToByte(sTimeStampDate->Month);
+    sTimeStampDate->Date = (uint8_t)RTC_Bcd2ToByte(sTimeStampDate->Date);
+    sTimeStampDate->WeekDay = (uint8_t)RTC_Bcd2ToByte(sTimeStampDate->WeekDay);
+  }
+
+  /* Clear the TIMESTAMP Flag */
+  __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSF);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Sets Tamper
+  * @note   By calling this API we disable the tamper interrupt for all tampers.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  sTamper: Pointer to Tamper Structure.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetTamper(RTC_HandleTypeDef *hrtc, RTC_TamperTypeDef* sTamper)
+{
+  uint32_t tmpreg = 0;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_TAMPER(sTamper->Tamper));
+  assert_param(IS_RTC_TAMPER_PIN(sTamper->PinSelection));
+  assert_param(IS_RTC_TAMPER_TRIGGER(sTamper->Trigger));
+  assert_param(IS_RTC_TAMPER_FILTER(sTamper->Filter));
+  assert_param(IS_RTC_TAMPER_SAMPLING_FREQ(sTamper->SamplingFrequency));
+  assert_param(IS_RTC_TAMPER_PRECHARGE_DURATION(sTamper->PrechargeDuration));
+  assert_param(IS_RTC_TAMPER_PULLUP_STATE(sTamper->TamperPullUp));
+  assert_param(IS_RTC_TAMPER_TIMESTAMPONTAMPER_DETECTION(sTamper->TimeStampOnTamperDetection));
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  if(sTamper->Trigger != RTC_TAMPERTRIGGER_RISINGEDGE)
+  {
+    sTamper->Trigger = (uint32_t)(sTamper->Tamper << 1);
+  }
+
+  tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)sTamper->PinSelection | (uint32_t)sTamper->Trigger  |\
+            (uint32_t)sTamper->Filter | (uint32_t)sTamper->SamplingFrequency | (uint32_t)sTamper->PrechargeDuration |\
+            (uint32_t)sTamper->TamperPullUp | sTamper->TimeStampOnTamperDetection);
+
+  hrtc->Instance->TAFCR &= (uint32_t)~((uint32_t)sTamper->Tamper | (uint32_t)(sTamper->Tamper << 1) | (uint32_t)RTC_TAFCR_TAMPTS |\
+                                       (uint32_t)RTC_TAFCR_TAMPFREQ | (uint32_t)RTC_TAFCR_TAMPFLT | (uint32_t)RTC_TAFCR_TAMPPRCH |\
+                                       (uint32_t)RTC_TAFCR_TAMPPUDIS | (uint32_t)RTC_TAFCR_TAMPINSEL | (uint32_t)RTC_TAFCR_TAMPIE);
+
+  hrtc->Instance->TAFCR |= tmpreg;
+
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Sets Tamper with interrupt.
+  * @note   By calling this API we force the tamper interrupt for all tampers.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  sTamper: Pointer to RTC Tamper.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetTamper_IT(RTC_HandleTypeDef *hrtc, RTC_TamperTypeDef* sTamper)
+{
+  uint32_t tmpreg = 0;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_TAMPER(sTamper->Tamper));
+  assert_param(IS_RTC_TAMPER_PIN(sTamper->PinSelection));
+  assert_param(IS_RTC_TAMPER_TRIGGER(sTamper->Trigger));
+  assert_param(IS_RTC_TAMPER_FILTER(sTamper->Filter));
+  assert_param(IS_RTC_TAMPER_SAMPLING_FREQ(sTamper->SamplingFrequency));
+  assert_param(IS_RTC_TAMPER_PRECHARGE_DURATION(sTamper->PrechargeDuration));
+  assert_param(IS_RTC_TAMPER_PULLUP_STATE(sTamper->TamperPullUp));
+  assert_param(IS_RTC_TAMPER_TIMESTAMPONTAMPER_DETECTION(sTamper->TimeStampOnTamperDetection));
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Configure the tamper trigger */
+  if(sTamper->Trigger != RTC_TAMPERTRIGGER_RISINGEDGE)
+  {
+    sTamper->Trigger = (uint32_t)(sTamper->Tamper << 1);
+  }
+
+  tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)sTamper->PinSelection | (uint32_t)sTamper->Trigger  |\
+            (uint32_t)sTamper->Filter | (uint32_t)sTamper->SamplingFrequency | (uint32_t)sTamper->PrechargeDuration |\
+            (uint32_t)sTamper->TamperPullUp | sTamper->TimeStampOnTamperDetection);
+
+  hrtc->Instance->TAFCR &= (uint32_t)~((uint32_t)sTamper->Tamper | (uint32_t)(sTamper->Tamper << 1) | (uint32_t)RTC_TAFCR_TAMPTS |\
+                                       (uint32_t)RTC_TAFCR_TAMPFREQ | (uint32_t)RTC_TAFCR_TAMPFLT | (uint32_t)RTC_TAFCR_TAMPPRCH |\
+                                       (uint32_t)RTC_TAFCR_TAMPPUDIS | (uint32_t)RTC_TAFCR_TAMPINSEL);
+
+  hrtc->Instance->TAFCR |= tmpreg;
+
+  /* Configure the Tamper Interrupt in the RTC_TAFCR */
+  hrtc->Instance->TAFCR |= (uint32_t)RTC_TAFCR_TAMPIE;
+
+  /* RTC Tamper Interrupt Configuration: EXTI configuration */
+  __HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_IT();
+
+  EXTI->RTSR |= RTC_EXTI_LINE_TAMPER_TIMESTAMP_EVENT;
+
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Deactivates Tamper.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  Tamper: Selected tamper pin.
+  *          This parameter can be RTC_Tamper_1 and/or RTC_TAMPER_2.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_DeactivateTamper(RTC_HandleTypeDef *hrtc, uint32_t Tamper)
+{
+  assert_param(IS_RTC_TAMPER(Tamper));
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the selected Tamper pin */
+  hrtc->Instance->TAFCR &= (uint32_t)~Tamper;
+
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  This function handles TimeStamp interrupt request.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+void HAL_RTCEx_TamperTimeStampIRQHandler(RTC_HandleTypeDef *hrtc)
+{
+  if(__HAL_RTC_TIMESTAMP_GET_IT(hrtc, RTC_IT_TS))
+  {
+    /* Get the status of the Interrupt */
+    if((uint32_t)(hrtc->Instance->CR & RTC_IT_TS) != (uint32_t)RESET)
+    {
+      /* TIMESTAMP callback */
+      HAL_RTCEx_TimeStampEventCallback(hrtc);
+
+      /* Clear the TIMESTAMP interrupt pending bit */
+      __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc,RTC_FLAG_TSF);
+    }
+  }
+
+  /* Get the status of the Interrupt */
+  if(__HAL_RTC_TAMPER_GET_IT(hrtc,RTC_IT_TAMP1))
+  {
+    /* Get the TAMPER Interrupt enable bit and pending bit */
+    if(((hrtc->Instance->TAFCR & (RTC_TAFCR_TAMPIE))) != (uint32_t)RESET)
+    {
+      /* Tamper callback */
+      HAL_RTCEx_Tamper1EventCallback(hrtc);
+
+      /* Clear the Tamper interrupt pending bit */
+      __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc,RTC_FLAG_TAMP1F);
+    }
+  }
+
+  /* Get the status of the Interrupt */
+  if(__HAL_RTC_TAMPER_GET_IT(hrtc, RTC_IT_TAMP2))
+  {
+    /* Get the TAMPER Interrupt enable bit and pending bit */
+    if(((hrtc->Instance->TAFCR & RTC_TAFCR_TAMPIE)) != (uint32_t)RESET)
+    {
+      /* Tamper callback */
+      HAL_RTCEx_Tamper2EventCallback(hrtc);
+
+      /* Clear the Tamper interrupt pending bit */
+      __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP2F);
+    }
+  }
+  /* Clear the EXTI's Flag for RTC TimeStamp and Tamper */
+  __HAL_RTC_TAMPER_TIMESTAMP_EXTI_CLEAR_FLAG();
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+}
+
+/**
+  * @brief  TimeStamp callback.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+__weak void HAL_RTCEx_TimeStampEventCallback(RTC_HandleTypeDef *hrtc)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_RTC_TimeStampEventCallback could be implemented in the user file
+  */
+}
+
+/**
+  * @brief  Tamper 1 callback.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+__weak void HAL_RTCEx_Tamper1EventCallback(RTC_HandleTypeDef *hrtc)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_RTC_Tamper1EventCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  Tamper 2 callback.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+__weak void HAL_RTCEx_Tamper2EventCallback(RTC_HandleTypeDef *hrtc)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_RTC_Tamper2EventCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  This function handles TimeStamp polling request.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  Timeout: Timeout duration
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_PollForTimeStampEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
+{
+  uint32_t tickstart = 0;
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  while(__HAL_RTC_TIMESTAMP_GET_FLAG(hrtc, RTC_FLAG_TSF) == RESET)
+  {
+    if(__HAL_RTC_TIMESTAMP_GET_FLAG(hrtc, RTC_FLAG_TSOVF) != RESET)
+    {
+      /* Clear the TIMESTAMP Overrun Flag */
+      __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSOVF);
+
+      /* Change TIMESTAMP state */
+      hrtc->State = HAL_RTC_STATE_ERROR;
+
+      return HAL_ERROR;
+    }
+
+    if(Timeout != HAL_MAX_DELAY)
+    {
+      if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
+      {
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  This function handles Tamper1 Polling.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  Timeout: Timeout duration
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_PollForTamper1Event(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
+{
+  uint32_t tickstart = 0;
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  /* Get the status of the Interrupt */
+  while(__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP1F)== RESET)
+  {
+    if(Timeout != HAL_MAX_DELAY)
+    {
+      if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
+      {
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+
+  /* Clear the Tamper Flag */
+  __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc,RTC_FLAG_TAMP1F);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  This function handles Tamper2 Polling.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  Timeout: Timeout duration
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_PollForTamper2Event(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
+{
+  uint32_t tickstart = 0;
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  /* Get the status of the Interrupt */
+  while(__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP2F) == RESET)
+  {
+    if(Timeout != HAL_MAX_DELAY)
+    {
+      if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
+      {
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+
+  /* Clear the Tamper Flag */
+  __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc,RTC_FLAG_TAMP2F);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  return HAL_OK;
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup RTCEx_Exported_Functions_Group2 RTC Wake-up functions
+ *  @brief   RTC Wake-up functions
+ *
+@verbatim
+ ===============================================================================
+                        ##### RTC Wake-up functions #####
+ ===============================================================================
+
+ [..] This section provides functions allowing to configure Wake-up feature
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Sets wake up timer.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  WakeUpCounter: Wake up counter
+  * @param  WakeUpClock: Wake up clock
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetWakeUpTimer(RTC_HandleTypeDef *hrtc, uint32_t WakeUpCounter, uint32_t WakeUpClock)
+{
+  uint32_t tickstart = 0;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_WAKEUP_CLOCK(WakeUpClock));
+  assert_param(IS_RTC_WAKEUP_COUNTER(WakeUpCounter));
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  __HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  /* Wait till RTC WUTWF flag is set and if Time out is reached exit */
+  while(__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == RESET)
+  {
+    if((HAL_GetTick() - tickstart ) > RTC_TIMEOUT_VALUE)
+    {
+      /* Enable the write protection for RTC registers */
+      __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+      hrtc->State = HAL_RTC_STATE_TIMEOUT;
+
+      /* Process Unlocked */
+      __HAL_UNLOCK(hrtc);
+
+      return HAL_TIMEOUT;
+    }
+  }
+
+  /* Clear the Wake-up Timer clock source bits in CR register */
+  hrtc->Instance->CR &= (uint32_t)~RTC_CR_WUCKSEL;
+
+  /* Configure the clock source */
+  hrtc->Instance->CR |= (uint32_t)WakeUpClock;
+
+  /* Configure the Wake-up Timer counter */
+  hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;
+
+   /* Enable the Wake-up Timer */
+  __HAL_RTC_WAKEUPTIMER_ENABLE(hrtc);
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Sets wake up timer with interrupt
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  WakeUpCounter: Wake up counter
+  * @param  WakeUpClock: Wake up clock
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetWakeUpTimer_IT(RTC_HandleTypeDef *hrtc, uint32_t WakeUpCounter, uint32_t WakeUpClock)
+{
+  uint32_t tickstart = 0;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_WAKEUP_CLOCK(WakeUpClock));
+  assert_param(IS_RTC_WAKEUP_COUNTER(WakeUpCounter));
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  __HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  /* Wait till RTC WUTWF flag is set and if Time out is reached exit */
+  while(__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == RESET)
+  {
+    if((HAL_GetTick() - tickstart ) > RTC_TIMEOUT_VALUE)
+    {
+      /* Enable the write protection for RTC registers */
+      __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+      hrtc->State = HAL_RTC_STATE_TIMEOUT;
+
+      /* Process Unlocked */
+      __HAL_UNLOCK(hrtc);
+
+      return HAL_TIMEOUT;
+    }
+  }
+
+  /* Configure the Wake-up Timer counter */
+  hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;
+
+  /* Clear the Wake-up Timer clock source bits in CR register */
+  hrtc->Instance->CR &= (uint32_t)~RTC_CR_WUCKSEL;
+
+  /* Configure the clock source */
+  hrtc->Instance->CR |= (uint32_t)WakeUpClock;
+
+  /* RTC WakeUpTimer Interrupt Configuration: EXTI configuration */
+  __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_IT();
+
+  EXTI->RTSR |= RTC_EXTI_LINE_WAKEUPTIMER_EVENT;
+
+  /* Configure the Interrupt in the RTC_CR register */
+  __HAL_RTC_WAKEUPTIMER_ENABLE_IT(hrtc,RTC_IT_WUT);
+
+  /* Enable the Wake-up Timer */
+  __HAL_RTC_WAKEUPTIMER_ENABLE(hrtc);
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Deactivates wake up timer counter.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval HAL status
+  */
+uint32_t HAL_RTCEx_DeactivateWakeUpTimer(RTC_HandleTypeDef *hrtc)
+{
+  uint32_t tickstart = 0;
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Disable the Wake-up Timer */
+  __HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
+
+  /* In case of interrupt mode is used, the interrupt source must disabled */
+  __HAL_RTC_WAKEUPTIMER_DISABLE_IT(hrtc,RTC_IT_WUT);
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  /* Wait till RTC WUTWF flag is set and if Time out is reached exit */
+  while(__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == RESET)
+  {
+    if((HAL_GetTick() - tickstart ) > RTC_TIMEOUT_VALUE)
+    {
+      /* Enable the write protection for RTC registers */
+      __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+      hrtc->State = HAL_RTC_STATE_TIMEOUT;
+
+      /* Process Unlocked */
+      __HAL_UNLOCK(hrtc);
+
+      return HAL_TIMEOUT;
+    }
+  }
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Gets wake up timer counter.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval Counter value
+  */
+uint32_t HAL_RTCEx_GetWakeUpTimer(RTC_HandleTypeDef *hrtc)
+{
+  /* Get the counter value */
+  return ((uint32_t)(hrtc->Instance->WUTR & RTC_WUTR_WUT));
+}
+
+/**
+  * @brief  This function handles Wake Up Timer interrupt request.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+void HAL_RTCEx_WakeUpTimerIRQHandler(RTC_HandleTypeDef *hrtc)
+{
+  if(__HAL_RTC_WAKEUPTIMER_GET_IT(hrtc, RTC_IT_WUT))
+  {
+    /* Get the status of the Interrupt */
+    if((uint32_t)(hrtc->Instance->CR & RTC_IT_WUT) != (uint32_t)RESET)
+    {
+      /* WAKEUPTIMER callback */
+      HAL_RTCEx_WakeUpTimerEventCallback(hrtc);
+
+      /* Clear the WAKEUPTIMER interrupt pending bit */
+      __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
+    }
+  }
+
+  /* Clear the EXTI's line Flag for RTC WakeUpTimer */
+  __HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG();
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+}
+
+/**
+  * @brief  Wake Up Timer callback.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+__weak void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_RTC_WakeUpTimerEventCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  This function handles Wake Up Timer Polling.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  Timeout: Timeout duration
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_PollForWakeUpTimerEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
+{
+  uint32_t tickstart = 0;
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  while(__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTF) == RESET)
+  {
+    if(Timeout != HAL_MAX_DELAY)
+    {
+      if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
+      {
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+
+  /* Clear the WAKEUPTIMER Flag */
+  __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  return HAL_OK;
+}
+
+/**
+  * @}
+  */
+
+
+/** @defgroup RTCEx_Exported_Functions_Group3 Extension Peripheral Control functions
+ *  @brief   Extension Peripheral Control functions
+ *
+@verbatim
+ ===============================================================================
+              ##### Extension Peripheral Control functions #####
+ ===============================================================================
+    [..]
+    This subsection provides functions allowing to
+      (+) Write a data in a specified RTC Backup data register
+      (+) Read a data in a specified RTC Backup data register
+      (+) Set the Coarse calibration parameters.
+      (+) Deactivate the Coarse calibration parameters
+      (+) Set the Smooth calibration parameters.
+      (+) Configure the Synchronization Shift Control Settings.
+      (+) Configure the Calibration Pinout (RTC_CALIB) Selection (1Hz or 512Hz).
+      (+) Deactivate the Calibration Pinout (RTC_CALIB) Selection (1Hz or 512Hz).
+      (+) Enable the RTC reference clock detection.
+      (+) Disable the RTC reference clock detection.
+      (+) Enable the Bypass Shadow feature.
+      (+) Disable the Bypass Shadow feature.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Writes a data in a specified RTC Backup data register.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  BackupRegister: RTC Backup data Register number.
+  *          This parameter can be: RTC_BKP_DRx where x can be from 0 to 19 to
+  *                                 specify the register.
+  * @param  Data: Data to be written in the specified RTC Backup data register.
+  * @retval None
+  */
+void HAL_RTCEx_BKUPWrite(RTC_HandleTypeDef *hrtc, uint32_t BackupRegister, uint32_t Data)
+{
+  uint32_t tmp = 0;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_BKP(BackupRegister));
+
+  tmp = (uint32_t)&(hrtc->Instance->BKP0R);
+  tmp += (BackupRegister * 4);
+
+  /* Write the specified register */
+  *(__IO uint32_t *)tmp = (uint32_t)Data;
+}
+
+/**
+  * @brief  Reads data from the specified RTC Backup data Register.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  BackupRegister: RTC Backup data Register number.
+  *          This parameter can be: RTC_BKP_DRx where x can be from 0 to 19 to
+  *                                 specify the register.
+  * @retval Read value
+  */
+uint32_t HAL_RTCEx_BKUPRead(RTC_HandleTypeDef *hrtc, uint32_t BackupRegister)
+{
+  uint32_t tmp = 0;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_BKP(BackupRegister));
+
+  tmp = (uint32_t)&(hrtc->Instance->BKP0R);
+  tmp += (BackupRegister * 4);
+
+  /* Read the specified register */
+  return (*(__IO uint32_t *)tmp);
+}
+
+/**
+  * @brief  Sets the Coarse calibration parameters.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  CalibSign: Specifies the sign of the coarse calibration value.
+  *          This parameter can be  one of the following values :
+  *             @arg RTC_CALIBSIGN_POSITIVE: The value sign is positive
+  *             @arg RTC_CALIBSIGN_NEGATIVE: The value sign is negative
+  * @param  Value: value of coarse calibration expressed in ppm (coded on 5 bits).
+  *
+  * @note   This Calibration value should be between 0 and 63 when using negative
+  *         sign with a 2-ppm step.
+  *
+  * @note   This Calibration value should be between 0 and 126 when using positive
+  *         sign with a 4-ppm step.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetCoarseCalib(RTC_HandleTypeDef* hrtc, uint32_t CalibSign, uint32_t Value)
+{
+  /* Check the parameters */
+  assert_param(IS_RTC_CALIB_SIGN(CalibSign));
+  assert_param(IS_RTC_CALIB_VALUE(Value));
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Set Initialization mode */
+  if(RTC_EnterInitMode(hrtc) != HAL_OK)
+  {
+    /* Enable the write protection for RTC registers */
+    __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+    /* Set RTC state*/
+    hrtc->State = HAL_RTC_STATE_ERROR;
+
+    /* Process Unlocked */
+    __HAL_UNLOCK(hrtc);
+
+    return HAL_ERROR;
+  }
+  else
+  {
+    /* Enable the Coarse Calibration */
+    __HAL_RTC_COARSE_CALIB_ENABLE(hrtc);
+
+    /* Set the coarse calibration value */
+    hrtc->Instance->CALIBR = (uint32_t)(CalibSign|Value);
+
+    /* Exit Initialization mode */
+    hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT;
+  }
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  /* Change state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Deactivates the Coarse calibration parameters.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_DeactivateCoarseCalib(RTC_HandleTypeDef* hrtc)
+{
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Set Initialization mode */
+  if(RTC_EnterInitMode(hrtc) != HAL_OK)
+  {
+    /* Enable the write protection for RTC registers */
+    __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+    /* Set RTC state*/
+    hrtc->State = HAL_RTC_STATE_ERROR;
+
+    /* Process Unlocked */
+    __HAL_UNLOCK(hrtc);
+
+    return HAL_ERROR;
+  }
+  else
+  {
+    /* Enable the Coarse Calibration */
+    __HAL_RTC_COARSE_CALIB_DISABLE(hrtc);
+
+    /* Exit Initialization mode */
+    hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT;
+  }
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  /* Change state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Sets the Smooth calibration parameters.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  SmoothCalibPeriod: Select the Smooth Calibration Period.
+  *          This parameter can be can be one of the following values :
+  *             @arg RTC_SMOOTHCALIB_PERIOD_32SEC: The smooth calibration period is 32s.
+  *             @arg RTC_SMOOTHCALIB_PERIOD_16SEC: The smooth calibration period is 16s.
+  *             @arg RTC_SMOOTHCALIB_PERIOD_8SEC: The smooth calibration period is 8s.
+  * @param  SmoothCalibPlusPulses: Select to Set or reset the CALP bit.
+  *          This parameter can be one of the following values:
+  *             @arg RTC_SMOOTHCALIB_PLUSPULSES_SET: Add one RTCCLK pulse every 2*11 pulses.
+  *             @arg RTC_SMOOTHCALIB_PLUSPULSES_RESET: No RTCCLK pulses are added.
+  * @param  SmouthCalibMinusPulsesValue: Select the value of CALM[8:0] bits.
+  *          This parameter can be one any value from 0 to 0x000001FF.
+  * @note   To deactivate the smooth calibration, the field SmoothCalibPlusPulses
+  *         must be equal to SMOOTHCALIB_PLUSPULSES_RESET and the field
+  *         SmouthCalibMinusPulsesValue must be equal to 0.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetSmoothCalib(RTC_HandleTypeDef* hrtc, uint32_t SmoothCalibPeriod, uint32_t SmoothCalibPlusPulses, uint32_t SmouthCalibMinusPulsesValue)
+{
+  uint32_t tickstart = 0;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_SMOOTH_CALIB_PERIOD(SmoothCalibPeriod));
+  assert_param(IS_RTC_SMOOTH_CALIB_PLUS(SmoothCalibPlusPulses));
+  assert_param(IS_RTC_SMOOTH_CALIB_MINUS(SmouthCalibMinusPulsesValue));
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* check if a calibration is pending*/
+  if((hrtc->Instance->ISR & RTC_ISR_RECALPF) != RESET)
+  {
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+    /* check if a calibration is pending*/
+    while((hrtc->Instance->ISR & RTC_ISR_RECALPF) != RESET)
+    {
+      if((HAL_GetTick() - tickstart ) > RTC_TIMEOUT_VALUE)
+      {
+        /* Enable the write protection for RTC registers */
+        __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+        /* Change RTC state */
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+
+        /* Process Unlocked */
+        __HAL_UNLOCK(hrtc);
+
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+
+  /* Configure the Smooth calibration settings */
+  hrtc->Instance->CALR = (uint32_t)((uint32_t)SmoothCalibPeriod | (uint32_t)SmoothCalibPlusPulses | (uint32_t)SmouthCalibMinusPulsesValue);
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Configures the Synchronization Shift Control Settings.
+  * @note   When REFCKON is set, firmware must not write to Shift control register.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  ShiftAdd1S: Select to add or not 1 second to the time calendar.
+  *          This parameter can be one of the following values :
+  *             @arg RTC_SHIFTADD1S_SET: Add one second to the clock calendar.
+  *             @arg RTC_SHIFTADD1S_RESET: No effect.
+  * @param  ShiftSubFS: Select the number of Second Fractions to substitute.
+  *          This parameter can be one any value from 0 to 0x7FFF.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetSynchroShift(RTC_HandleTypeDef* hrtc, uint32_t ShiftAdd1S, uint32_t ShiftSubFS)
+{
+  uint32_t tickstart = 0;
+
+  /* Check the parameters */
+  assert_param(IS_RTC_SHIFT_ADD1S(ShiftAdd1S));
+  assert_param(IS_RTC_SHIFT_SUBFS(ShiftSubFS));
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+    /* Wait until the shift is completed*/
+    while((hrtc->Instance->ISR & RTC_ISR_SHPF) != RESET)
+    {
+      if((HAL_GetTick() - tickstart ) > RTC_TIMEOUT_VALUE)
+      {
+        /* Enable the write protection for RTC registers */
+        __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+
+        /* Process Unlocked */
+        __HAL_UNLOCK(hrtc);
+
+        return HAL_TIMEOUT;
+      }
+    }
+
+    /* Check if the reference clock detection is disabled */
+    if((hrtc->Instance->CR & RTC_CR_REFCKON) == RESET)
+    {
+      /* Configure the Shift settings */
+      hrtc->Instance->SHIFTR = (uint32_t)(uint32_t)(ShiftSubFS) | (uint32_t)(ShiftAdd1S);
+
+      /* If  RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
+      if((hrtc->Instance->CR & RTC_CR_BYPSHAD) == RESET)
+      {
+        if(HAL_RTC_WaitForSynchro(hrtc) != HAL_OK)
+        {
+          /* Enable the write protection for RTC registers */
+          __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+          hrtc->State = HAL_RTC_STATE_ERROR;
+
+          /* Process Unlocked */
+          __HAL_UNLOCK(hrtc);
+
+          return HAL_ERROR;
+        }
+      }
+    }
+    else
+    {
+      /* Enable the write protection for RTC registers */
+      __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+      /* Change RTC state */
+      hrtc->State = HAL_RTC_STATE_ERROR;
+
+      /* Process Unlocked */
+      __HAL_UNLOCK(hrtc);
+
+      return HAL_ERROR;
+    }
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Configures the Calibration Pinout (RTC_CALIB) Selection (1Hz or 512Hz).
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  CalibOutput: Select the Calibration output Selection .
+  *          This parameter can be one of the following values:
+  *             @arg RTC_CALIBOUTPUT_512HZ: A signal has a regular waveform at 512Hz.
+  *             @arg RTC_CALIBOUTPUT_1HZ: A signal has a regular waveform at 1Hz.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetCalibrationOutPut(RTC_HandleTypeDef* hrtc, uint32_t CalibOutput)
+{
+  /* Check the parameters */
+  assert_param(IS_RTC_CALIB_OUTPUT(CalibOutput));
+
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Clear flags before config */
+  hrtc->Instance->CR &= (uint32_t)~RTC_CR_COSEL;
+
+  /* Configure the RTC_CR register */
+  hrtc->Instance->CR |= (uint32_t)CalibOutput;
+
+  __HAL_RTC_CALIBRATION_OUTPUT_ENABLE(hrtc);
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Deactivates the Calibration Pinout (RTC_CALIB) Selection (1Hz or 512Hz).
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_DeactivateCalibrationOutPut(RTC_HandleTypeDef* hrtc)
+{
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  __HAL_RTC_CALIBRATION_OUTPUT_DISABLE(hrtc);
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Enables the RTC reference clock detection.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_SetRefClock(RTC_HandleTypeDef* hrtc)
+{
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Set Initialization mode */
+  if(RTC_EnterInitMode(hrtc) != HAL_OK)
+  {
+    /* Enable the write protection for RTC registers */
+    __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+    /* Set RTC state*/
+    hrtc->State = HAL_RTC_STATE_ERROR;
+
+    /* Process Unlocked */
+    __HAL_UNLOCK(hrtc);
+
+    return HAL_ERROR;
+  }
+  else
+  {
+    __HAL_RTC_CLOCKREF_DETECTION_ENABLE(hrtc);
+
+    /* Exit Initialization mode */
+    hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT;
+  }
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+   /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Disable the RTC reference clock detection.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_DeactivateRefClock(RTC_HandleTypeDef* hrtc)
+{
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Set Initialization mode */
+  if(RTC_EnterInitMode(hrtc) != HAL_OK)
+  {
+    /* Enable the write protection for RTC registers */
+    __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+    /* Set RTC state*/
+    hrtc->State = HAL_RTC_STATE_ERROR;
+
+    /* Process Unlocked */
+    __HAL_UNLOCK(hrtc);
+
+    return HAL_ERROR;
+  }
+  else
+  {
+    __HAL_RTC_CLOCKREF_DETECTION_DISABLE(hrtc);
+
+    /* Exit Initialization mode */
+    hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT;
+  }
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Enables the Bypass Shadow feature.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @note   When the Bypass Shadow is enabled the calendar value are taken
+  *         directly from the Calendar counter.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_EnableBypassShadow(RTC_HandleTypeDef* hrtc)
+{
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Set the BYPSHAD bit */
+  hrtc->Instance->CR |= (uint8_t)RTC_CR_BYPSHAD;
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @brief  Disables the Bypass Shadow feature.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @note   When the Bypass Shadow is enabled the calendar value are taken
+  *         directly from the Calendar counter.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_DisableBypassShadow(RTC_HandleTypeDef* hrtc)
+{
+  /* Process Locked */
+  __HAL_LOCK(hrtc);
+
+  hrtc->State = HAL_RTC_STATE_BUSY;
+
+  /* Disable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
+
+  /* Reset the BYPSHAD bit */
+  hrtc->Instance->CR &= (uint8_t)~RTC_CR_BYPSHAD;
+
+  /* Enable the write protection for RTC registers */
+  __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  /* Process Unlocked */
+  __HAL_UNLOCK(hrtc);
+
+  return HAL_OK;
+}
+
+/**
+  * @}
+  */
+
+  /** @defgroup RTCEx_Exported_Functions_Group4 Extended features functions
+ *  @brief    Extended features functions
+ *
+@verbatim
+ ===============================================================================
+                 ##### Extended features functions #####
+ ===============================================================================
+    [..]  This section provides functions allowing to:
+      (+) RTC Alarm B callback
+      (+) RTC Poll for Alarm B request
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Alarm B callback.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @retval None
+  */
+__weak void HAL_RTCEx_AlarmBEventCallback(RTC_HandleTypeDef *hrtc)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_RTC_AlarmBEventCallback could be implemented in the user file
+   */
+}
+
+/**
+  * @brief  This function handles AlarmB Polling request.
+  * @param  hrtc: pointer to a RTC_HandleTypeDef structure that contains
+  *                the configuration information for RTC.
+  * @param  Timeout: Timeout duration
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_RTCEx_PollForAlarmBEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
+{
+  uint32_t tickstart = 0;
+
+  /* Get tick */
+  tickstart = HAL_GetTick();
+
+  while(__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRBF) == RESET)
+  {
+    if(Timeout != HAL_MAX_DELAY)
+    {
+      if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
+      {
+        hrtc->State = HAL_RTC_STATE_TIMEOUT;
+        return HAL_TIMEOUT;
+      }
+    }
+  }
+
+  /* Clear the Alarm Flag */
+  __HAL_RTC_ALARM_CLEAR_FLAG(hrtc, RTC_FLAG_ALRBF);
+
+  /* Change RTC state */
+  hrtc->State = HAL_RTC_STATE_READY;
+
+  return HAL_OK;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+#endif /* HAL_RTC_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/