HAL_StatusTypeDef HAL_RTC_GetTime(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef *sTime, uint32_t Format)
{
  uint32_t counter_time = 0, counter_alarm = 0, days_elapsed = 0, hours = 0;
  
  /* Check input parameters */
  if((hrtc == NULL) || (sTime == NULL))
  {
     return HAL_ERROR;
  }

  /* Check the parameters */
  assert_param(IS_RTC_FORMAT(Format));

  /* Check if counter overflow occurred */
  if (__HAL_RTC_OVERFLOW_GET_FLAG(hrtc, RTC_FLAG_OW))
  {
      return HAL_ERROR;
  }

  /* Read the time counter*/
  counter_time = RTC_ReadTimeCounter(hrtc);

  /* Fill the structure fields with the read parameters */
  hours = counter_time / 3600;
  sTime->Minutes  = (uint8_t)((counter_time % 3600) / 60);
  sTime->Seconds  = (uint8_t)((counter_time % 3600) % 60);

  if (hours >= 24)
  {
    /* Get number of days elapsed from last calculation */
    days_elapsed = (hours / 24);

    /* Set Hours in RTC_TimeTypeDef structure*/
    sTime->Hours = (hours % 24);    

    /* Read Alarm counter in RTC registers */
    counter_alarm = RTC_ReadAlarmCounter(hrtc);

    /* Calculate remaining time to reach alarm (only if set and not yet expired)*/
    if ((counter_alarm != RTC_ALARM_RESETVALUE) && (counter_alarm > counter_time))
    {
      counter_alarm -= counter_time;
    }
    else 
    {
      /* In case of counter_alarm < counter_time */
      /* Alarm expiration already occurred but alarm not deactivated */
      counter_alarm = RTC_ALARM_RESETVALUE;
    }

    /* Set updated time in decreasing counter by number of days elapsed */
    counter_time -= (days_elapsed * 24 * 3600);
    
    /* Write time counter in RTC registers */
    if (RTC_WriteTimeCounter(hrtc, counter_time) != HAL_OK)
    {
      return HAL_ERROR;
    }

    /* Set updated alarm to be set */
    if (counter_alarm != RTC_ALARM_RESETVALUE)
    {
      counter_alarm += counter_time;
      
      /* Write time counter in RTC registers */
      if (RTC_WriteAlarmCounter(hrtc, counter_alarm) != HAL_OK)
      {
        return HAL_ERROR;
      }
    }
    else
    {
      /* Alarm already occurred. Set it to reset values to avoid unexpected expiration */
      if (RTC_WriteAlarmCounter(hrtc, counter_alarm) != HAL_OK)
      {
        return HAL_ERROR;
      }
    }
    
    /* Update date */
    RTC_DateUpdate(hrtc, days_elapsed);
  }
  else 
  {
    sTime->Hours = hours;    
  }

  /* Check the input parameters format */
  if(Format != RTC_FORMAT_BIN)
  {
    /* Convert the time structure parameters to BCD format */
    sTime->Hours    = (uint8_t)RTC_ByteToBcd2(sTime->Hours);
    sTime->Minutes  = (uint8_t)RTC_ByteToBcd2(sTime->Minutes);
    sTime->Seconds  = (uint8_t)RTC_ByteToBcd2(sTime->Seconds);  
  }
  
  return HAL_OK;
}

HAL_StatusTypeDef HAL_RTC_GetDate(RTC_HandleTypeDef *hrtc, RTC_DateTypeDef *sDate, uint32_t Format)
{
  RTC_TimeTypeDef stime = {0};
  
  /* Check input parameters */
  if((hrtc == NULL) || (sDate == NULL))
  {
     return HAL_ERROR;
  }
  
  /* Check the parameters */
  assert_param(IS_RTC_FORMAT(Format));
  
  /* Call HAL_RTC_GetTime function to update date if counter higher than 24 hours */
  if (HAL_RTC_GetTime(hrtc, &stime, RTC_FORMAT_BIN) != HAL_OK)
  {
    return HAL_ERROR;
  }

  /* Fill the structure fields with the read parameters */
  sDate->WeekDay  = hrtc->DateToUpdate.WeekDay;
  sDate->Year     = hrtc->DateToUpdate.Year;
  sDate->Month    = hrtc->DateToUpdate.Month;
  sDate->Date     = hrtc->DateToUpdate.Date;

  /* Check the input parameters format */
  if(Format != RTC_FORMAT_BIN)
  {    
    /* Convert the date structure parameters to BCD format */
    sDate->Year   = (uint8_t)RTC_ByteToBcd2(sDate->Year);
    sDate->Month  = (uint8_t)RTC_ByteToBcd2(sDate->Month);
    sDate->Date   = (uint8_t)RTC_ByteToBcd2(sDate->Date);  
  }
  return HAL_OK;
}

static void RTC_DateUpdate(RTC_HandleTypeDef* hrtc, uint32_t DayElapsed)
{
  uint32_t year = 0, month = 0, day = 0;
  uint32_t loop = 0;

  /* Get the current year*/
  year = hrtc->DateToUpdate.Year;

  /* Get the current month and day */
  month = hrtc->DateToUpdate.Month;
  day = hrtc->DateToUpdate.Date;

  for (loop = 0; loop < DayElapsed; loop++)
  {
    if((month == 1) || (month == 3) || (month == 5) || (month == 7) || \
       (month == 8) || (month == 10) || (month == 12))
    {
      if(day < 31)
      {
        day++;
      }
      /* Date structure member: day = 31 */
      else
      {
        if(month != 12)
        {
          month++;
          day = 1;
        }
        /* Date structure member: day = 31 & month =12 */
        else
        {
          month = 1;
          day = 1;
          year++;
        }
      }
    }
    else if((month == 4) || (month == 6) || (month == 9) || (month == 11))
    {
      if(day < 30)
      {
        day++;
      }
      /* Date structure member: day = 30 */
      else
      {
        month++;
        day = 1;
      }
    }
    else if(month == 2)
    {
      if(day < 28)
      {
        day++;
      }
      else if(day == 28)
      {
        /* Leap year */
        if(RTC_IsLeapYear(year))
        {
          day++;
        }
        else
        {
          month++;
          day = 1;
        }
      }
      else if(day == 29)
      {
        month++;
        day = 1;
      }
    }
  }

  /* Update year */
  hrtc->DateToUpdate.Year = year;

  /* Update day and month */
  hrtc->DateToUpdate.Month = month;
  hrtc->DateToUpdate.Date = day;

  /* Update day of the week */
  hrtc->DateToUpdate.WeekDay = RTC_WeekDayNum(year, month, day);
}

static uint32_t RTC_ReadTimeCounter(RTC_HandleTypeDef* hrtc)
{
  uint16_t high1 = 0, high2 = 0, low = 0;
  uint32_t timecounter = 0;

  high1 = READ_REG(hrtc->Instance->CNTH & RTC_CNTH_RTC_CNT);
  low   = READ_REG(hrtc->Instance->CNTL & RTC_CNTL_RTC_CNT);
  high2 = READ_REG(hrtc->Instance->CNTH & RTC_CNTH_RTC_CNT);

  if (high1 != high2)
  { /* In this case the counter roll over during reading of CNTL and CNTH registers, 
       read again CNTL register then return the counter value */
    timecounter = (((uint32_t) high2 << 16 ) | READ_REG(hrtc->Instance->CNTL & RTC_CNTL_RTC_CNT));
  }
  else
  { /* No counter roll over during reading of CNTL and CNTH registers, counter 
       value is equal to first value of CNTL and CNTH */
    timecounter = (((uint32_t) high1 << 16 ) | low);
  }

  return timecounter;
}

HAL_StatusTypeDef HAL_RTC_SetDate(RTC_HandleTypeDef *hrtc, RTC_DateTypeDef *sDate, uint32_t Format)
{
  uint32_t counter_time = 0, counter_alarm = 0, hours = 0;
  
  /* Check input parameters */
  if((hrtc == NULL) || (sDate == NULL))
  {
     return HAL_ERROR;
  }
  
  /* Check the parameters */
  assert_param(IS_RTC_FORMAT(Format));
  
 /* Process Locked */ 
 __HAL_LOCK(hrtc);
  
  hrtc->State = HAL_RTC_STATE_BUSY; 
  
  if(Format == RTC_FORMAT_BIN)
  {   
    assert_param(IS_RTC_YEAR(sDate->Year));
    assert_param(IS_RTC_MONTH(sDate->Month));
    assert_param(IS_RTC_DATE(sDate->Date)); 

    /* Change the current date */
    hrtc->DateToUpdate.Year  = sDate->Year;
    hrtc->DateToUpdate.Month = sDate->Month;
    hrtc->DateToUpdate.Date  = sDate->Date;
  }
  else
  {   
    assert_param(IS_RTC_YEAR(RTC_Bcd2ToByte(sDate->Year)));
    assert_param(IS_RTC_MONTH(RTC_Bcd2ToByte(sDate->Month)));
    assert_param(IS_RTC_DATE(RTC_Bcd2ToByte(sDate->Date)));
    
    /* Change the current date */
    hrtc->DateToUpdate.Year  = RTC_Bcd2ToByte(sDate->Year);
    hrtc->DateToUpdate.Month = RTC_Bcd2ToByte(sDate->Month);
    hrtc->DateToUpdate.Date  = RTC_Bcd2ToByte(sDate->Date);
  }

  /* WeekDay set by user can be ignored because automatically calculated */
  hrtc->DateToUpdate.WeekDay = RTC_WeekDayNum(hrtc->DateToUpdate.Year, hrtc->DateToUpdate.Month, hrtc->DateToUpdate.Date);
  sDate->WeekDay = hrtc->DateToUpdate.WeekDay;

  /* Reset time to be aligned on the same day */
  /* Read the time counter*/
  counter_time = RTC_ReadTimeCounter(hrtc);

  /* Fill the structure fields with the read parameters */
  hours = counter_time / 3600;
  if (hours > 24)
  {
    /* Set updated time in decreasing counter by number of days elapsed */
    counter_time -= ((hours / 24) * 24 * 3600);
    /* Write time counter in RTC registers */
    if (RTC_WriteTimeCounter(hrtc, counter_time) != HAL_OK)
    {
      /* Set RTC state */
      hrtc->State = HAL_RTC_STATE_ERROR;
      
      /* Process Unlocked */ 
      __HAL_UNLOCK(hrtc);
      
      return HAL_ERROR;
    }

    /* Read current Alarm counter in RTC registers */
    counter_alarm = RTC_ReadAlarmCounter(hrtc);

    /* Set again alarm to match with new time if enabled */
    if (counter_alarm != RTC_ALARM_RESETVALUE)
    {
      if(counter_alarm < counter_time)
      {
        /* Add 1 day to alarm counter*/
        counter_alarm += (uint32_t)(24 * 3600);
        
        /* Write new Alarm counter in RTC registers */
        if (RTC_WriteAlarmCounter(hrtc, counter_alarm) != HAL_OK)
        {
          /* Set RTC state */
          hrtc->State = HAL_RTC_STATE_ERROR;
          
          /* Process Unlocked */ 
          __HAL_UNLOCK(hrtc);
          
          return HAL_ERROR;
        }
      }
    }
    

  }

  hrtc->State = HAL_RTC_STATE_READY ;
  
  /* Process Unlocked */ 
  __HAL_UNLOCK(hrtc);
  
  return HAL_OK;    
}