stm32f7xx_hal_rtc_ex.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32f7xx_hal.h"

#ifdef HAL_RTC_MODULE_ENABLED

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

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->OR &= (uint32_t)~RTC_OR_TSINSEL;
  hrtc->Instance->OR |= (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;
}

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->OR &= (uint32_t)~RTC_OR_TSINSEL;
  hrtc->Instance->OR |= (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;
}

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;
}

HAL_StatusTypeDef HAL_RTCEx_SetInternalTimeStamp(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);

  /* Configure the internal Time Stamp Enable bits */
  __HAL_RTC_INTERNAL_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;
}

HAL_StatusTypeDef HAL_RTCEx_DeactivateInternalTimeStamp(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);

  /* Configure the internal Time Stamp Enable bits */
  __HAL_RTC_INTERNAL_TIMESTAMP_DISABLE(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;
}

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;
}

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_TRIGGER(sTamper->Trigger));
  assert_param(IS_RTC_TAMPER_ERASE_MODE(sTamper->NoErase));
  assert_param(IS_RTC_TAMPER_MASKFLAG_STATE(sTamper->MaskFlag));
  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); 
  } 
  
  if(sTamper->NoErase != RTC_TAMPER_ERASE_BACKUP_ENABLE)
  { 
    sTamper->NoErase = 0;
    if((sTamper->Tamper & RTC_TAMPER_1) != 0)
    {
      sTamper->NoErase |= RTC_TAMPCR_TAMP1NOERASE;
    }
    if((sTamper->Tamper & RTC_TAMPER_2) != 0)
    {
      sTamper->NoErase |= RTC_TAMPCR_TAMP2NOERASE;
    }
    if((sTamper->Tamper & RTC_TAMPER_3) != 0)
    {
      sTamper->NoErase |= RTC_TAMPCR_TAMP3NOERASE;
    }
  }

  if(sTamper->MaskFlag != RTC_TAMPERMASK_FLAG_DISABLE)
  {
    sTamper->MaskFlag = 0;
    if((sTamper->Tamper & RTC_TAMPER_1) != 0)
    {
      sTamper->MaskFlag |= RTC_TAMPCR_TAMP1MF;
    }
    if((sTamper->Tamper & RTC_TAMPER_2) != 0)
    {
      sTamper->MaskFlag |= RTC_TAMPCR_TAMP2MF;
    }
    if((sTamper->Tamper & RTC_TAMPER_3) != 0)
    {
      sTamper->MaskFlag |= RTC_TAMPCR_TAMP3MF;
    }
  }
  
  tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)sTamper->Trigger  | (uint32_t)sTamper->NoErase |\
            (uint32_t)sTamper->MaskFlag | (uint32_t)sTamper->Filter | (uint32_t)sTamper->SamplingFrequency |\
            (uint32_t)sTamper->PrechargeDuration | (uint32_t)sTamper->TamperPullUp | sTamper->TimeStampOnTamperDetection);

  hrtc->Instance->TAMPCR &= (uint32_t)~((uint32_t)sTamper->Tamper | (uint32_t)(sTamper->Tamper << 1) | (uint32_t)RTC_TAMPCR_TAMPTS |\
                                       (uint32_t)RTC_TAMPCR_TAMPFREQ | (uint32_t)RTC_TAMPCR_TAMPFLT | (uint32_t)RTC_TAMPCR_TAMPPRCH |\
                                       (uint32_t)RTC_TAMPCR_TAMPPUDIS | (uint32_t)RTC_TAMPCR_TAMPIE | (uint32_t)RTC_TAMPCR_TAMP1IE |\
                                       (uint32_t)RTC_TAMPCR_TAMP2IE | (uint32_t)RTC_TAMPCR_TAMP3IE | (uint32_t)RTC_TAMPCR_TAMP1NOERASE |\
                                       (uint32_t)RTC_TAMPCR_TAMP2NOERASE | (uint32_t)RTC_TAMPCR_TAMP3NOERASE | (uint32_t)RTC_TAMPCR_TAMP1MF |\
                                       (uint32_t)RTC_TAMPCR_TAMP2MF | (uint32_t)RTC_TAMPCR_TAMP3MF);

  hrtc->Instance->TAMPCR |= tmpreg;      
      
  hrtc->State = HAL_RTC_STATE_READY; 

  /* Process Unlocked */ 
  __HAL_UNLOCK(hrtc);
    
  return HAL_OK;
}

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_INTERRUPT(sTamper->Interrupt));
  assert_param(IS_RTC_TAMPER_TRIGGER(sTamper->Trigger));
  assert_param(IS_RTC_TAMPER_ERASE_MODE(sTamper->NoErase));
  assert_param(IS_RTC_TAMPER_MASKFLAG_STATE(sTamper->MaskFlag));
  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); 
  } 
  
  if(sTamper->NoErase != RTC_TAMPER_ERASE_BACKUP_ENABLE)
  { 
    sTamper->NoErase = 0;
    if((sTamper->Tamper & RTC_TAMPER_1) != 0)
    {
      sTamper->NoErase |= RTC_TAMPCR_TAMP1NOERASE;
    }
    if((sTamper->Tamper & RTC_TAMPER_2) != 0)
    {
      sTamper->NoErase |= RTC_TAMPCR_TAMP2NOERASE;
    }
    if((sTamper->Tamper & RTC_TAMPER_3) != 0)
    {
      sTamper->NoErase |= RTC_TAMPCR_TAMP3NOERASE;
    }
  }

  if(sTamper->MaskFlag != RTC_TAMPERMASK_FLAG_DISABLE)
  {
    sTamper->MaskFlag = 0;
    if((sTamper->Tamper & RTC_TAMPER_1) != 0)
    {
      sTamper->MaskFlag |= RTC_TAMPCR_TAMP1MF;
    }
    if((sTamper->Tamper & RTC_TAMPER_2) != 0)
    {
      sTamper->MaskFlag |= RTC_TAMPCR_TAMP2MF;
    }
    if((sTamper->Tamper & RTC_TAMPER_3) != 0)
    {
      sTamper->MaskFlag |= RTC_TAMPCR_TAMP3MF;
    }
  }
  
  tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)sTamper->Interrupt | (uint32_t)sTamper->Trigger  | (uint32_t)sTamper->NoErase |\
            (uint32_t)sTamper->MaskFlag | (uint32_t)sTamper->Filter | (uint32_t)sTamper->SamplingFrequency |\
            (uint32_t)sTamper->PrechargeDuration | (uint32_t)sTamper->TamperPullUp | sTamper->TimeStampOnTamperDetection);
  
  hrtc->Instance->TAMPCR &= (uint32_t)~((uint32_t)sTamper->Tamper | (uint32_t)(sTamper->Tamper << 1) | (uint32_t)RTC_TAMPCR_TAMPTS |\
                                       (uint32_t)RTC_TAMPCR_TAMPFREQ | (uint32_t)RTC_TAMPCR_TAMPFLT | (uint32_t)RTC_TAMPCR_TAMPPRCH |\
                                       (uint32_t)RTC_TAMPCR_TAMPPUDIS | (uint32_t)RTC_TAMPCR_TAMPIE | (uint32_t)RTC_TAMPCR_TAMP1IE |\
                                       (uint32_t)RTC_TAMPCR_TAMP2IE | (uint32_t)RTC_TAMPCR_TAMP3IE | (uint32_t)RTC_TAMPCR_TAMP1NOERASE |\
                                       (uint32_t)RTC_TAMPCR_TAMP2NOERASE | (uint32_t)RTC_TAMPCR_TAMP3NOERASE | (uint32_t)RTC_TAMPCR_TAMP1MF |\
                                       (uint32_t)RTC_TAMPCR_TAMP2MF | (uint32_t)RTC_TAMPCR_TAMP3MF);

  hrtc->Instance->TAMPCR |= tmpreg;

  /* 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;
}

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->TAMPCR &= (uint32_t)~Tamper;

  if ((Tamper & RTC_TAMPER_1) != 0)
  {
    /* Disable the Tamper1 interrupt */
    hrtc->Instance->TAMPCR &= (uint32_t)~(RTC_IT_TAMP | RTC_IT_TAMP1);
  }
  if ((Tamper & RTC_TAMPER_2) != 0)
  {
    /* Disable the Tamper2 interrupt */
    hrtc->Instance->TAMPCR &= (uint32_t)~(RTC_IT_TAMP | RTC_IT_TAMP2);
  }
  if ((Tamper & RTC_TAMPER_3) != 0)
  {
    /* Disable the Tamper2 interrupt */
    hrtc->Instance->TAMPCR &= (uint32_t)~(RTC_IT_TAMP | RTC_IT_TAMP3);
  } 
  
  hrtc->State = HAL_RTC_STATE_READY;   
  
  /* Process Unlocked */  
  __HAL_UNLOCK(hrtc);
  
  return HAL_OK; 
}

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_FLAG(hrtc, RTC_FLAG_TAMP1F)== SET)
  {
    /* Get the TAMPER Interrupt enable bit and pending bit */
    if((((hrtc->Instance->TAMPCR & RTC_TAMPCR_TAMPIE)) != (uint32_t)RESET) || \
       (((hrtc->Instance->TAMPCR & RTC_TAMPCR_TAMP1IE)) != (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_FLAG(hrtc, RTC_FLAG_TAMP2F)== SET)
  {
    /* Get the TAMPER Interrupt enable bit and pending bit */
    if((((hrtc->Instance->TAMPCR & RTC_TAMPCR_TAMPIE)) != (uint32_t)RESET) || \
       (((hrtc->Instance->TAMPCR & RTC_TAMPCR_TAMP2IE)) != (uint32_t)RESET))
    {
      /* Tamper callback */
      HAL_RTCEx_Tamper2EventCallback(hrtc);

      /* Clear the Tamper interrupt pending bit */
      __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP2F);
    }
  }

  /* Get the status of the Interrupt */
  if(__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP3F)== SET)
  {
    /* Get the TAMPER Interrupt enable bit and pending bit */
    if((((hrtc->Instance->TAMPCR & RTC_TAMPCR_TAMPIE)) != (uint32_t)RESET) || \
       (((hrtc->Instance->TAMPCR & RTC_TAMPCR_TAMP3IE)) != (uint32_t)RESET))
    {
      /* Tamper callback */
      HAL_RTCEx_Tamper3EventCallback(hrtc);

      /* Clear the Tamper interrupt pending bit */
      __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP3F);
    }
  }
  
  /* 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;
}

__weak void HAL_RTCEx_TimeStampEventCallback(RTC_HandleTypeDef *hrtc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hrtc);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_RTC_TimeStampEventCallback could be implemented in the user file
  */
}

__weak void HAL_RTCEx_Tamper1EventCallback(RTC_HandleTypeDef *hrtc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hrtc);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_RTC_Tamper1EventCallback could be implemented in the user file
   */
}

__weak void HAL_RTCEx_Tamper2EventCallback(RTC_HandleTypeDef *hrtc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hrtc);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_RTC_Tamper2EventCallback could be implemented in the user file
   */
}

__weak void HAL_RTCEx_Tamper3EventCallback(RTC_HandleTypeDef *hrtc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hrtc);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_RTCEx_Tamper3EventCallback could be implemented in the user file
   */
}

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(Timeout != HAL_MAX_DELAY)
    {
      if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
      {
        hrtc->State = HAL_RTC_STATE_TIMEOUT;
        return HAL_TIMEOUT;
      }
    }
  }
    
  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; 
   }
    
  /* Change RTC state */
  hrtc->State = HAL_RTC_STATE_READY; 
  
  return HAL_OK; 
}
  
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; 
}

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;
}

HAL_StatusTypeDef HAL_RTCEx_PollForTamper3Event(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
{
  uint32_t tickstart = HAL_GetTick();

  /* Get the status of the Interrupt */
  while(__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP3F) == 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_TAMP3F);

  /* Change RTC state */
  hrtc->State = HAL_RTC_STATE_READY;

  return HAL_OK;
}

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();

  /*Check RTC WUTWF flag is reset only when wake up timer enabled*/
  if((hrtc->Instance->CR & RTC_CR_WUTE) != RESET)
  {
    /* 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 Wakeup 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 Wakeup Timer counter */
  hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;
  
   /* Enable the Wakeup 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;
}

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();

    /*Check RTC WUTWF flag is reset only when wake up timer enabled*/
  if((hrtc->Instance->CR & RTC_CR_WUTE) != RESET)
  {
    /* 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 Wakeup Timer counter */
  hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;

  /* Clear the Wakeup 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 Wakeup 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;
}

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 Wakeup 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;
}

uint32_t HAL_RTCEx_GetWakeUpTimer(RTC_HandleTypeDef *hrtc)
{
  /* Get the counter value */
  return ((uint32_t)(hrtc->Instance->WUTR & RTC_WUTR_WUT)); 
}

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;
}

__weak void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hrtc);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_RTC_WakeUpTimerEventCallback could be implemented in the user file
   */
}

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; 
}

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;
}

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);
}

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;
}

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;
}

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;
}

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;
}

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;
}

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;
}

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;
}

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;
}

__weak void HAL_RTCEx_AlarmBEventCallback(RTC_HandleTypeDef *hrtc)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hrtc);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_RTC_AlarmBEventCallback could be implemented in the user file
   */
}

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****/