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/**

  ******************************************************************************

  * @file    stm32l1xx_ll_rtc.c

  * @author  MCD Application Team

  * @brief   RTC LL module driver.

  ******************************************************************************

  * @attention

  *

  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.

  * All rights reserved.</center></h2>

  *

  * This software component is licensed by ST under BSD 3-Clause license,

  * the "License"; You may not use this file except in compliance with the

  * License. You may obtain a copy of the License at:

  *                        opensource.org/licenses/BSD-3-Clause

  *

  ******************************************************************************

  */

#if defined(USE_FULL_LL_DRIVER)

/* Includes ------------------------------------------------------------------*/

#include "stm32l1xx_ll_rtc.h"

#include "stm32l1xx_ll_cortex.h"

#ifdef  USE_FULL_ASSERT

#include "stm32_assert.h"

#else

#define assert_param(expr) ((void)0U)

#endif

/** @addtogroup STM32L1xx_LL_Driver

  * @{

  */

#if defined(RTC)

/** @addtogroup RTC_LL

  * @{

  */

/* Private types -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

/* Private constants ---------------------------------------------------------*/

/** @addtogroup RTC_LL_Private_Constants

  * @{

  */

/* Default values used for prescaler */

#define RTC_ASYNCH_PRESC_DEFAULT     0x0000007FU

#define RTC_SYNCH_PRESC_DEFAULT      0x000000FFU

/* Values used for timeout */

#define RTC_INITMODE_TIMEOUT         1000U /* 1s when tick set to 1ms */

#define RTC_SYNCHRO_TIMEOUT          1000U /* 1s when tick set to 1ms */

/**

  * @}

  */

/* Private macros ------------------------------------------------------------*/

/** @addtogroup RTC_LL_Private_Macros

  * @{

  */

#define IS_LL_RTC_HOURFORMAT(__VALUE__) (((__VALUE__) == LL_RTC_HOURFORMAT_24HOUR) \

                                      || ((__VALUE__) == LL_RTC_HOURFORMAT_AMPM))

#define IS_LL_RTC_ASYNCH_PREDIV(__VALUE__)   ((__VALUE__) <= 0x7FU)

#define IS_LL_RTC_SYNCH_PREDIV(__VALUE__)    ((__VALUE__) <= 0x7FFFU)

#define IS_LL_RTC_FORMAT(__VALUE__) (((__VALUE__) == LL_RTC_FORMAT_BIN) \

                                  || ((__VALUE__) == LL_RTC_FORMAT_BCD))

#define IS_LL_RTC_TIME_FORMAT(__VALUE__) (((__VALUE__) == LL_RTC_TIME_FORMAT_AM_OR_24) \

                                       || ((__VALUE__) == LL_RTC_TIME_FORMAT_PM))

#define IS_LL_RTC_HOUR12(__HOUR__)            (((__HOUR__) > 0U) && ((__HOUR__) <= 12U))

#define IS_LL_RTC_HOUR24(__HOUR__)            ((__HOUR__) <= 23U)

#define IS_LL_RTC_MINUTES(__MINUTES__)        ((__MINUTES__) <= 59U)

#define IS_LL_RTC_SECONDS(__SECONDS__)        ((__SECONDS__) <= 59U)

#define IS_LL_RTC_WEEKDAY(__VALUE__) (((__VALUE__) == LL_RTC_WEEKDAY_MONDAY) \

                                   || ((__VALUE__) == LL_RTC_WEEKDAY_TUESDAY) \

                                   || ((__VALUE__) == LL_RTC_WEEKDAY_WEDNESDAY) \

                                   || ((__VALUE__) == LL_RTC_WEEKDAY_THURSDAY) \

                                   || ((__VALUE__) == LL_RTC_WEEKDAY_FRIDAY) \

                                   || ((__VALUE__) == LL_RTC_WEEKDAY_SATURDAY) \

                                   || ((__VALUE__) == LL_RTC_WEEKDAY_SUNDAY))

#define IS_LL_RTC_DAY(__DAY__)    (((__DAY__) >= 1U) && ((__DAY__) <= 31U))

#define IS_LL_RTC_MONTH(__MONTH__) (((__MONTH__) >= 1U) && ((__MONTH__) <= 12U))

#define IS_LL_RTC_YEAR(__YEAR__) ((__YEAR__) <= 99U)

#define IS_LL_RTC_ALMA_MASK(__VALUE__) (((__VALUE__) == LL_RTC_ALMA_MASK_NONE) \

                                     || ((__VALUE__) == LL_RTC_ALMA_MASK_DATEWEEKDAY) \

                                     || ((__VALUE__) == LL_RTC_ALMA_MASK_HOURS) \

                                     || ((__VALUE__) == LL_RTC_ALMA_MASK_MINUTES) \

                                     || ((__VALUE__) == LL_RTC_ALMA_MASK_SECONDS) \

                                     || ((__VALUE__) == LL_RTC_ALMA_MASK_ALL))

#define IS_LL_RTC_ALMB_MASK(__VALUE__) (((__VALUE__) == LL_RTC_ALMB_MASK_NONE) \

                                     || ((__VALUE__) == LL_RTC_ALMB_MASK_DATEWEEKDAY) \

                                     || ((__VALUE__) == LL_RTC_ALMB_MASK_HOURS) \

                                     || ((__VALUE__) == LL_RTC_ALMB_MASK_MINUTES) \

                                     || ((__VALUE__) == LL_RTC_ALMB_MASK_SECONDS) \

                                     || ((__VALUE__) == LL_RTC_ALMB_MASK_ALL))

#define IS_LL_RTC_ALMA_DATE_WEEKDAY_SEL(__SEL__) (((__SEL__) == LL_RTC_ALMA_DATEWEEKDAYSEL_DATE) || \

                                                  ((__SEL__) == LL_RTC_ALMA_DATEWEEKDAYSEL_WEEKDAY))

#define IS_LL_RTC_ALMB_DATE_WEEKDAY_SEL(__SEL__) (((__SEL__) == LL_RTC_ALMB_DATEWEEKDAYSEL_DATE) || \

                                                  ((__SEL__) == LL_RTC_ALMB_DATEWEEKDAYSEL_WEEKDAY))

/**

  * @}

  */

/* Private function prototypes -----------------------------------------------*/

/* Exported functions --------------------------------------------------------*/

/** @addtogroup RTC_LL_Exported_Functions

  * @{

  */

/** @addtogroup RTC_LL_EF_Init

  * @{

  */

/**

  * @brief  De-Initializes the RTC registers to their default reset values.

  * @note   This function does not reset the RTC Clock source and RTC Backup Data

  *         registers.

  * @param  RTCx RTC Instance

  * @retval An ErrorStatus enumeration value:

  *          - SUCCESS: RTC registers are de-initialized

  *          - ERROR: RTC registers are not de-initialized

  */

ErrorStatus LL_RTC_DeInit(RTC_TypeDef *RTCx)

{

  ErrorStatus status = ERROR;

  /* Check the parameter */

  assert_param(IS_RTC_ALL_INSTANCE(RTCx));

  /* Disable the write protection for RTC registers */

  LL_RTC_DisableWriteProtection(RTCx);

  /* Set Initialization mode */

  if (LL_RTC_EnterInitMode(RTCx) != ERROR)

  {

    /* Reset TR, DR and CR registers */

    LL_RTC_WriteReg(RTCx, TR,       0x00000000U);

#if defined(RTC_WAKEUP_SUPPORT)

    LL_RTC_WriteReg(RTCx, WUTR,     RTC_WUTR_WUT);

#endif /* RTC_WAKEUP_SUPPORT */

    LL_RTC_WriteReg(RTCx, DR, (RTC_DR_WDU_0 | RTC_DR_MU_0 | RTC_DR_DU_0));

    /* Reset All CR bits except CR[2:0] */

#if defined(RTC_WAKEUP_SUPPORT)

    LL_RTC_WriteReg(RTCx, CR, (LL_RTC_ReadReg(RTCx, CR) & RTC_CR_WUCKSEL));

#else

    LL_RTC_WriteReg(RTCx, CR, 0x00000000U);

#endif /* RTC_WAKEUP_SUPPORT */

    LL_RTC_WriteReg(RTCx, PRER, (RTC_PRER_PREDIV_A | RTC_SYNCH_PRESC_DEFAULT));

    LL_RTC_WriteReg(RTCx, ALRMAR,   0x00000000U);

    LL_RTC_WriteReg(RTCx, ALRMBR,   0x00000000U);

#if defined(RTC_SHIFTR_ADD1S)

    LL_RTC_WriteReg(RTCx, SHIFTR,   0x00000000U);

#endif /* RTC_SHIFTR_ADD1S */

#if defined(RTC_SMOOTHCALIB_SUPPORT)

    LL_RTC_WriteReg(RTCx, CALR,     0x00000000U);

#endif /* RTC_SMOOTHCALIB_SUPPORT */

#if defined(RTC_SUBSECOND_SUPPORT)

    LL_RTC_WriteReg(RTCx, ALRMASSR, 0x00000000U);

    LL_RTC_WriteReg(RTCx, ALRMBSSR, 0x00000000U);

#endif /* RTC_SUBSECOND_SUPPORT */

    /* Reset ISR register and exit initialization mode */

    LL_RTC_WriteReg(RTCx, ISR,      0x00000000U);

    /* Reset Tamper and alternate functions configuration register */

    LL_RTC_WriteReg(RTCx, TAFCR, 0x00000000U);

    /* Wait till the RTC RSF flag is set */

    status = LL_RTC_WaitForSynchro(RTCx);

  }

  /* Enable the write protection for RTC registers */

  LL_RTC_EnableWriteProtection(RTCx);

  return status;

}

/**

  * @brief  Initializes the RTC registers according to the specified parameters

  *         in RTC_InitStruct.

  * @param  RTCx RTC Instance

  * @param  RTC_InitStruct pointer to a @ref LL_RTC_InitTypeDef structure that contains

  *         the configuration information for the RTC peripheral.

  * @note   The RTC Prescaler register is write protected and can be written in

  *         initialization mode only.

  * @retval An ErrorStatus enumeration value:

  *          - SUCCESS: RTC registers are initialized

  *          - ERROR: RTC registers are not initialized

  */

ErrorStatus LL_RTC_Init(RTC_TypeDef *RTCx, LL_RTC_InitTypeDef *RTC_InitStruct)

{

  ErrorStatus status = ERROR;

  /* Check the parameters */

  assert_param(IS_RTC_ALL_INSTANCE(RTCx));

  assert_param(IS_LL_RTC_HOURFORMAT(RTC_InitStruct->HourFormat));

  assert_param(IS_LL_RTC_ASYNCH_PREDIV(RTC_InitStruct->AsynchPrescaler));

  assert_param(IS_LL_RTC_SYNCH_PREDIV(RTC_InitStruct->SynchPrescaler));

  /* Disable the write protection for RTC registers */

  LL_RTC_DisableWriteProtection(RTCx);

  /* Set Initialization mode */

  if (LL_RTC_EnterInitMode(RTCx) != ERROR)

  {

    /* Set Hour Format */

    LL_RTC_SetHourFormat(RTCx, RTC_InitStruct->HourFormat);

    /* Configure Synchronous and Asynchronous prescaler factor */

    LL_RTC_SetSynchPrescaler(RTCx, RTC_InitStruct->SynchPrescaler);

    LL_RTC_SetAsynchPrescaler(RTCx, RTC_InitStruct->AsynchPrescaler);

    /* Exit Initialization mode */

    LL_RTC_DisableInitMode(RTCx);

    status = SUCCESS;

  }

  /* Enable the write protection for RTC registers */

  LL_RTC_EnableWriteProtection(RTCx);

  return status;

}

/**

  * @brief  Set each @ref LL_RTC_InitTypeDef field to default value.

  * @param  RTC_InitStruct pointer to a @ref LL_RTC_InitTypeDef structure which will be initialized.

  * @retval None

  */

void LL_RTC_StructInit(LL_RTC_InitTypeDef *RTC_InitStruct)

{

  /* Set RTC_InitStruct fields to default values */

  RTC_InitStruct->HourFormat      = LL_RTC_HOURFORMAT_24HOUR;

  RTC_InitStruct->AsynchPrescaler = RTC_ASYNCH_PRESC_DEFAULT;

  RTC_InitStruct->SynchPrescaler  = RTC_SYNCH_PRESC_DEFAULT;

}

/**

  * @brief  Set the RTC current time.

  * @param  RTCx RTC Instance

  * @param  RTC_Format This parameter can be one of the following values:

  *         @arg @ref LL_RTC_FORMAT_BIN

  *         @arg @ref LL_RTC_FORMAT_BCD

  * @param  RTC_TimeStruct pointer to a RTC_TimeTypeDef structure that contains

  *                        the time configuration information for the RTC.

  * @retval An ErrorStatus enumeration value:

  *          - SUCCESS: RTC Time register is configured

  *          - ERROR: RTC Time register is not configured

  */

ErrorStatus LL_RTC_TIME_Init(RTC_TypeDef *RTCx, uint32_t RTC_Format, LL_RTC_TimeTypeDef *RTC_TimeStruct)

{

  ErrorStatus status = ERROR;

  /* Check the parameters */

  assert_param(IS_RTC_ALL_INSTANCE(RTCx));

  assert_param(IS_LL_RTC_FORMAT(RTC_Format));

  if (RTC_Format == LL_RTC_FORMAT_BIN)

  {

    if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)

    {

      assert_param(IS_LL_RTC_HOUR12(RTC_TimeStruct->Hours));

      assert_param(IS_LL_RTC_TIME_FORMAT(RTC_TimeStruct->TimeFormat));

    }

    else

    {

      RTC_TimeStruct->TimeFormat = 0x00U;

      assert_param(IS_LL_RTC_HOUR24(RTC_TimeStruct->Hours));

    }

    assert_param(IS_LL_RTC_MINUTES(RTC_TimeStruct->Minutes));

    assert_param(IS_LL_RTC_SECONDS(RTC_TimeStruct->Seconds));

  }

  else

  {

    if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)

    {

      assert_param(IS_LL_RTC_HOUR12(__LL_RTC_CONVERT_BCD2BIN(RTC_TimeStruct->Hours)));

      assert_param(IS_LL_RTC_TIME_FORMAT(RTC_TimeStruct->TimeFormat));

    }

    else

    {

      RTC_TimeStruct->TimeFormat = 0x00U;

      assert_param(IS_LL_RTC_HOUR24(__LL_RTC_CONVERT_BCD2BIN(RTC_TimeStruct->Hours)));

    }

    assert_param(IS_LL_RTC_MINUTES(__LL_RTC_CONVERT_BCD2BIN(RTC_TimeStruct->Minutes)));

    assert_param(IS_LL_RTC_SECONDS(__LL_RTC_CONVERT_BCD2BIN(RTC_TimeStruct->Seconds)));

  }

  /* Disable the write protection for RTC registers */

  LL_RTC_DisableWriteProtection(RTCx);

  /* Set Initialization mode */

  if (LL_RTC_EnterInitMode(RTCx) != ERROR)

  {

    /* Check the input parameters format */

    if (RTC_Format != LL_RTC_FORMAT_BIN)

    {

      LL_RTC_TIME_Config(RTCx, RTC_TimeStruct->TimeFormat, RTC_TimeStruct->Hours,

                         RTC_TimeStruct->Minutes, RTC_TimeStruct->Seconds);

    }

    else

    {

      LL_RTC_TIME_Config(RTCx, RTC_TimeStruct->TimeFormat, __LL_RTC_CONVERT_BIN2BCD(RTC_TimeStruct->Hours),

                         __LL_RTC_CONVERT_BIN2BCD(RTC_TimeStruct->Minutes),

                         __LL_RTC_CONVERT_BIN2BCD(RTC_TimeStruct->Seconds));

    }

    /* Exit Initialization mode */

    LL_RTC_DisableInitMode(RTCx);

#if defined(RTC_CR_BYPSHAD)

    /* If  RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */

    if (LL_RTC_IsShadowRegBypassEnabled(RTCx) == 0U)

    {

      status = LL_RTC_WaitForSynchro(RTCx);

    }

    else

    {

      status = SUCCESS;

    }

#else

    status = SUCCESS;

#endif /* RTC_CR_BYPSHAD */

  }

  /* Enable the write protection for RTC registers */

  LL_RTC_EnableWriteProtection(RTCx);

  return status;

}

/**

  * @brief  Set each @ref LL_RTC_TimeTypeDef field to default value (Time = 00h:00min:00sec).

  * @param  RTC_TimeStruct pointer to a @ref LL_RTC_TimeTypeDef structure which will be initialized.

  * @retval None

  */

void LL_RTC_TIME_StructInit(LL_RTC_TimeTypeDef *RTC_TimeStruct)

{

  /* Time = 00h:00min:00sec */

  RTC_TimeStruct->TimeFormat = LL_RTC_TIME_FORMAT_AM_OR_24;

  RTC_TimeStruct->Hours      = 0U;

  RTC_TimeStruct->Minutes    = 0U;

  RTC_TimeStruct->Seconds    = 0U;

}

/**

  * @brief  Set the RTC current date.

  * @param  RTCx RTC Instance

  * @param  RTC_Format This parameter can be one of the following values:

  *         @arg @ref LL_RTC_FORMAT_BIN

  *         @arg @ref LL_RTC_FORMAT_BCD

  * @param  RTC_DateStruct pointer to a RTC_DateTypeDef structure that contains

  *                         the date configuration information for the RTC.

  * @retval An ErrorStatus enumeration value:

  *          - SUCCESS: RTC Day register is configured

  *          - ERROR: RTC Day register is not configured

  */

ErrorStatus LL_RTC_DATE_Init(RTC_TypeDef *RTCx, uint32_t RTC_Format, LL_RTC_DateTypeDef *RTC_DateStruct)

{

  ErrorStatus status = ERROR;

  /* Check the parameters */

  assert_param(IS_RTC_ALL_INSTANCE(RTCx));

  assert_param(IS_LL_RTC_FORMAT(RTC_Format));

  if ((RTC_Format == LL_RTC_FORMAT_BIN) && ((RTC_DateStruct->Month & 0x10U) == 0x10U))

  {

    RTC_DateStruct->Month = ((RTC_DateStruct->Month & (uint8_t)~(0x10U)) + 0x0AU);

  }

  if (RTC_Format == LL_RTC_FORMAT_BIN)

  {

    assert_param(IS_LL_RTC_YEAR(RTC_DateStruct->Year));

    assert_param(IS_LL_RTC_MONTH(RTC_DateStruct->Month));

    assert_param(IS_LL_RTC_DAY(RTC_DateStruct->Day));

  }

  else

  {

    assert_param(IS_LL_RTC_YEAR(__LL_RTC_CONVERT_BCD2BIN(RTC_DateStruct->Year)));

    assert_param(IS_LL_RTC_MONTH(__LL_RTC_CONVERT_BCD2BIN(RTC_DateStruct->Month)));

    assert_param(IS_LL_RTC_DAY(__LL_RTC_CONVERT_BCD2BIN(RTC_DateStruct->Day)));

  }

  assert_param(IS_LL_RTC_WEEKDAY(RTC_DateStruct->WeekDay));

  /* Disable the write protection for RTC registers */

  LL_RTC_DisableWriteProtection(RTCx);

  /* Set Initialization mode */

  if (LL_RTC_EnterInitMode(RTCx) != ERROR)

  {

    /* Check the input parameters format */

    if (RTC_Format != LL_RTC_FORMAT_BIN)

    {

      LL_RTC_DATE_Config(RTCx, RTC_DateStruct->WeekDay, RTC_DateStruct->Day, RTC_DateStruct->Month, RTC_DateStruct->Year);

    }

    else

    {

      LL_RTC_DATE_Config(RTCx, RTC_DateStruct->WeekDay, __LL_RTC_CONVERT_BIN2BCD(RTC_DateStruct->Day),

                         __LL_RTC_CONVERT_BIN2BCD(RTC_DateStruct->Month), __LL_RTC_CONVERT_BIN2BCD(RTC_DateStruct->Year));

    }

    /* Exit Initialization mode */

    LL_RTC_DisableInitMode(RTCx);

#if defined(RTC_CR_BYPSHAD)

    /* If  RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */

    if (LL_RTC_IsShadowRegBypassEnabled(RTCx) == 0U)

    {

      status = LL_RTC_WaitForSynchro(RTCx);

    }

    else

    {

      status = SUCCESS;

    }

#else

    status = SUCCESS;

#endif /* RTC_CR_BYPSHAD */

  }

  /* Enable the write protection for RTC registers */

  LL_RTC_EnableWriteProtection(RTCx);

  return status;

}

/**

  * @brief  Set each @ref LL_RTC_DateTypeDef field to default value (date = Monday, January 01 xx00)

  * @param  RTC_DateStruct pointer to a @ref LL_RTC_DateTypeDef structure which will be initialized.

  * @retval None

  */

void LL_RTC_DATE_StructInit(LL_RTC_DateTypeDef *RTC_DateStruct)

{

  /* Monday, January 01 xx00 */

  RTC_DateStruct->WeekDay = LL_RTC_WEEKDAY_MONDAY;

  RTC_DateStruct->Day     = 1U;

  RTC_DateStruct->Month   = LL_RTC_MONTH_JANUARY;

  RTC_DateStruct->Year    = 0U;

}

/**

  * @brief  Set the RTC Alarm A.

  * @note   The Alarm register can only be written when the corresponding Alarm

  *         is disabled (Use @ref LL_RTC_ALMA_Disable function).

  * @param  RTCx RTC Instance

  * @param  RTC_Format This parameter can be one of the following values:

  *         @arg @ref LL_RTC_FORMAT_BIN

  *         @arg @ref LL_RTC_FORMAT_BCD

  * @param  RTC_AlarmStruct pointer to a @ref LL_RTC_AlarmTypeDef structure that

  *                         contains the alarm configuration parameters.

  * @retval An ErrorStatus enumeration value:

  *          - SUCCESS: ALARMA registers are configured

  *          - ERROR: ALARMA registers are not configured

  */

ErrorStatus LL_RTC_ALMA_Init(RTC_TypeDef *RTCx, uint32_t RTC_Format, LL_RTC_AlarmTypeDef *RTC_AlarmStruct)

{

  /* Check the parameters */

  assert_param(IS_RTC_ALL_INSTANCE(RTCx));

  assert_param(IS_LL_RTC_FORMAT(RTC_Format));

  assert_param(IS_LL_RTC_ALMA_MASK(RTC_AlarmStruct->AlarmMask));

  assert_param(IS_LL_RTC_ALMA_DATE_WEEKDAY_SEL(RTC_AlarmStruct->AlarmDateWeekDaySel));

  if (RTC_Format == LL_RTC_FORMAT_BIN)

  {

    if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)

    {

      assert_param(IS_LL_RTC_HOUR12(RTC_AlarmStruct->AlarmTime.Hours));

      assert_param(IS_LL_RTC_TIME_FORMAT(RTC_AlarmStruct->AlarmTime.TimeFormat));

    }

    else

    {

      RTC_AlarmStruct->AlarmTime.TimeFormat = 0x00U;

      assert_param(IS_LL_RTC_HOUR24(RTC_AlarmStruct->AlarmTime.Hours));

    }

    assert_param(IS_LL_RTC_MINUTES(RTC_AlarmStruct->AlarmTime.Minutes));

    assert_param(IS_LL_RTC_SECONDS(RTC_AlarmStruct->AlarmTime.Seconds));

    if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMA_DATEWEEKDAYSEL_DATE)

    {

      assert_param(IS_LL_RTC_DAY(RTC_AlarmStruct->AlarmDateWeekDay));

    }

    else

    {

      assert_param(IS_LL_RTC_WEEKDAY(RTC_AlarmStruct->AlarmDateWeekDay));

    }

  }

  else

  {

    if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)

    {

      assert_param(IS_LL_RTC_HOUR12(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Hours)));

      assert_param(IS_LL_RTC_TIME_FORMAT(RTC_AlarmStruct->AlarmTime.TimeFormat));

    }

    else

    {

      RTC_AlarmStruct->AlarmTime.TimeFormat = 0x00U;

      assert_param(IS_LL_RTC_HOUR24(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Hours)));

    }

    assert_param(IS_LL_RTC_MINUTES(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Minutes)));

    assert_param(IS_LL_RTC_SECONDS(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Seconds)));

    if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMA_DATEWEEKDAYSEL_DATE)

    {

      assert_param(IS_LL_RTC_DAY(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmDateWeekDay)));

    }

    else

    {

      assert_param(IS_LL_RTC_WEEKDAY(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmDateWeekDay)));

    }

  }

  /* Disable the write protection for RTC registers */

  LL_RTC_DisableWriteProtection(RTCx);

  /* Select weekday selection */

  if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMA_DATEWEEKDAYSEL_DATE)

  {

    /* Set the date for ALARM */

    LL_RTC_ALMA_DisableWeekday(RTCx);

    if (RTC_Format != LL_RTC_FORMAT_BIN)

    {

      LL_RTC_ALMA_SetDay(RTCx, RTC_AlarmStruct->AlarmDateWeekDay);

    }

    else

    {

      LL_RTC_ALMA_SetDay(RTCx, __LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmDateWeekDay));

    }

  }

  else

  {

    /* Set the week day for ALARM */

    LL_RTC_ALMA_EnableWeekday(RTCx);

    LL_RTC_ALMA_SetWeekDay(RTCx, RTC_AlarmStruct->AlarmDateWeekDay);

  }

  /* Configure the Alarm register */

  if (RTC_Format != LL_RTC_FORMAT_BIN)

  {

    LL_RTC_ALMA_ConfigTime(RTCx, RTC_AlarmStruct->AlarmTime.TimeFormat, RTC_AlarmStruct->AlarmTime.Hours,

                           RTC_AlarmStruct->AlarmTime.Minutes, RTC_AlarmStruct->AlarmTime.Seconds);

  }

  else

  {

    LL_RTC_ALMA_ConfigTime(RTCx, RTC_AlarmStruct->AlarmTime.TimeFormat,

                           __LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Hours),

                           __LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Minutes),

                           __LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Seconds));

  }

  /* Set ALARM mask */

  LL_RTC_ALMA_SetMask(RTCx, RTC_AlarmStruct->AlarmMask);

  /* Enable the write protection for RTC registers */

  LL_RTC_EnableWriteProtection(RTCx);

  return SUCCESS;

}

/**

  * @brief  Set the RTC Alarm B.

  * @note   The Alarm register can only be written when the corresponding Alarm

  *         is disabled (@ref LL_RTC_ALMB_Disable function).

  * @param  RTCx RTC Instance

  * @param  RTC_Format This parameter can be one of the following values:

  *         @arg @ref LL_RTC_FORMAT_BIN

  *         @arg @ref LL_RTC_FORMAT_BCD

  * @param  RTC_AlarmStruct pointer to a @ref LL_RTC_AlarmTypeDef structure that

  *                         contains the alarm configuration parameters.

  * @retval An ErrorStatus enumeration value:

  *          - SUCCESS: ALARMB registers are configured

  *          - ERROR: ALARMB registers are not configured

  */

ErrorStatus LL_RTC_ALMB_Init(RTC_TypeDef *RTCx, uint32_t RTC_Format, LL_RTC_AlarmTypeDef *RTC_AlarmStruct)

{

  /* Check the parameters */

  assert_param(IS_RTC_ALL_INSTANCE(RTCx));

  assert_param(IS_LL_RTC_FORMAT(RTC_Format));

  assert_param(IS_LL_RTC_ALMB_MASK(RTC_AlarmStruct->AlarmMask));

  assert_param(IS_LL_RTC_ALMB_DATE_WEEKDAY_SEL(RTC_AlarmStruct->AlarmDateWeekDaySel));

  if (RTC_Format == LL_RTC_FORMAT_BIN)

  {

    if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)

    {

      assert_param(IS_LL_RTC_HOUR12(RTC_AlarmStruct->AlarmTime.Hours));

      assert_param(IS_LL_RTC_TIME_FORMAT(RTC_AlarmStruct->AlarmTime.TimeFormat));

    }

    else

    {

      RTC_AlarmStruct->AlarmTime.TimeFormat = 0x00U;

      assert_param(IS_LL_RTC_HOUR24(RTC_AlarmStruct->AlarmTime.Hours));

    }

    assert_param(IS_LL_RTC_MINUTES(RTC_AlarmStruct->AlarmTime.Minutes));

    assert_param(IS_LL_RTC_SECONDS(RTC_AlarmStruct->AlarmTime.Seconds));

    if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMB_DATEWEEKDAYSEL_DATE)

    {

      assert_param(IS_LL_RTC_DAY(RTC_AlarmStruct->AlarmDateWeekDay));

    }

    else

    {

      assert_param(IS_LL_RTC_WEEKDAY(RTC_AlarmStruct->AlarmDateWeekDay));

    }

  }

  else

  {

    if (LL_RTC_GetHourFormat(RTCx) != LL_RTC_HOURFORMAT_24HOUR)

    {

      assert_param(IS_LL_RTC_HOUR12(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Hours)));

      assert_param(IS_LL_RTC_TIME_FORMAT(RTC_AlarmStruct->AlarmTime.TimeFormat));

    }

    else

    {

      RTC_AlarmStruct->AlarmTime.TimeFormat = 0x00U;

      assert_param(IS_LL_RTC_HOUR24(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Hours)));

    }

    assert_param(IS_LL_RTC_MINUTES(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Minutes)));

    assert_param(IS_LL_RTC_SECONDS(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmTime.Seconds)));

    if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMB_DATEWEEKDAYSEL_DATE)

    {

      assert_param(IS_LL_RTC_DAY(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmDateWeekDay)));

    }

    else

    {

      assert_param(IS_LL_RTC_WEEKDAY(__LL_RTC_CONVERT_BCD2BIN(RTC_AlarmStruct->AlarmDateWeekDay)));

    }

  }

  /* Disable the write protection for RTC registers */

  LL_RTC_DisableWriteProtection(RTCx);

  /* Select weekday selection */

  if (RTC_AlarmStruct->AlarmDateWeekDaySel == LL_RTC_ALMB_DATEWEEKDAYSEL_DATE)

  {

    /* Set the date for ALARM */

    LL_RTC_ALMB_DisableWeekday(RTCx);

    if (RTC_Format != LL_RTC_FORMAT_BIN)

    {

      LL_RTC_ALMB_SetDay(RTCx, RTC_AlarmStruct->AlarmDateWeekDay);

    }

    else

    {

      LL_RTC_ALMB_SetDay(RTCx, __LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmDateWeekDay));

    }

  }

  else

  {

    /* Set the week day for ALARM */

    LL_RTC_ALMB_EnableWeekday(RTCx);

    LL_RTC_ALMB_SetWeekDay(RTCx, RTC_AlarmStruct->AlarmDateWeekDay);

  }

  /* Configure the Alarm register */

  if (RTC_Format != LL_RTC_FORMAT_BIN)

  {

    LL_RTC_ALMB_ConfigTime(RTCx, RTC_AlarmStruct->AlarmTime.TimeFormat, RTC_AlarmStruct->AlarmTime.Hours,

                           RTC_AlarmStruct->AlarmTime.Minutes, RTC_AlarmStruct->AlarmTime.Seconds);

  }

  else

  {

    LL_RTC_ALMB_ConfigTime(RTCx, RTC_AlarmStruct->AlarmTime.TimeFormat,

                           __LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Hours),

                           __LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Minutes),

                           __LL_RTC_CONVERT_BIN2BCD(RTC_AlarmStruct->AlarmTime.Seconds));

  }

  /* Set ALARM mask */

  LL_RTC_ALMB_SetMask(RTCx, RTC_AlarmStruct->AlarmMask);

  /* Enable the write protection for RTC registers */

  LL_RTC_EnableWriteProtection(RTCx);

  return SUCCESS;

}

/**

  * @brief  Set each @ref LL_RTC_AlarmTypeDef of ALARMA field to default value (Time = 00h:00mn:00sec /

  *         Day = 1st day of the month/Mask = all fields are masked).

  * @param  RTC_AlarmStruct pointer to a @ref LL_RTC_AlarmTypeDef structure which will be initialized.

  * @retval None

  */

void LL_RTC_ALMA_StructInit(LL_RTC_AlarmTypeDef *RTC_AlarmStruct)

{

  /* Alarm Time Settings : Time = 00h:00mn:00sec */

  RTC_AlarmStruct->AlarmTime.TimeFormat = LL_RTC_ALMA_TIME_FORMAT_AM;

  RTC_AlarmStruct->AlarmTime.Hours      = 0U;

  RTC_AlarmStruct->AlarmTime.Minutes    = 0U;

  RTC_AlarmStruct->AlarmTime.Seconds    = 0U;

  /* Alarm Day Settings : Day = 1st day of the month */

  RTC_AlarmStruct->AlarmDateWeekDaySel = LL_RTC_ALMA_DATEWEEKDAYSEL_DATE;

  RTC_AlarmStruct->AlarmDateWeekDay    = 1U;

  /* Alarm Masks Settings : Mask =  all fields are not masked */

  RTC_AlarmStruct->AlarmMask           = LL_RTC_ALMA_MASK_NONE;

}

/**

  * @brief  Set each @ref LL_RTC_AlarmTypeDef of ALARMA field to default value (Time = 00h:00mn:00sec /

  *         Day = 1st day of the month/Mask = all fields are masked).

  * @param  RTC_AlarmStruct pointer to a @ref LL_RTC_AlarmTypeDef structure which will be initialized.

  * @retval None

  */

void LL_RTC_ALMB_StructInit(LL_RTC_AlarmTypeDef *RTC_AlarmStruct)

{

  /* Alarm Time Settings : Time = 00h:00mn:00sec */

  RTC_AlarmStruct->AlarmTime.TimeFormat = LL_RTC_ALMB_TIME_FORMAT_AM;

  RTC_AlarmStruct->AlarmTime.Hours      = 0U;

  RTC_AlarmStruct->AlarmTime.Minutes    = 0U;

  RTC_AlarmStruct->AlarmTime.Seconds    = 0U;

  /* Alarm Day Settings : Day = 1st day of the month */

  RTC_AlarmStruct->AlarmDateWeekDaySel = LL_RTC_ALMB_DATEWEEKDAYSEL_DATE;

  RTC_AlarmStruct->AlarmDateWeekDay    = 1U;

  /* Alarm Masks Settings : Mask =  all fields are not masked */

  RTC_AlarmStruct->AlarmMask           = LL_RTC_ALMB_MASK_NONE;

}

/**

  * @brief  Enters the RTC Initialization mode.

  * @note   The RTC Initialization mode is write protected, use the

  *         @ref LL_RTC_DisableWriteProtection before calling this function.

  * @param  RTCx RTC Instance

  * @retval An ErrorStatus enumeration value:

  *          - SUCCESS: RTC is in Init mode

  *          - ERROR: RTC is not in Init mode

  */

ErrorStatus LL_RTC_EnterInitMode(RTC_TypeDef *RTCx)

{

  __IO uint32_t timeout = RTC_INITMODE_TIMEOUT;

  ErrorStatus status = SUCCESS;

  uint32_t tmp;

  /* Check the parameter */

  assert_param(IS_RTC_ALL_INSTANCE(RTCx));

  /* Check if the Initialization mode is set */

  if (LL_RTC_IsActiveFlag_INIT(RTCx) == 0U)

  {

    /* Set the Initialization mode */

    LL_RTC_EnableInitMode(RTCx);

    /* Wait till RTC is in INIT state and if Time out is reached exit */

    tmp = LL_RTC_IsActiveFlag_INIT(RTCx);

    while ((timeout != 0U) && (tmp != 1U))

    {

      if (LL_SYSTICK_IsActiveCounterFlag() == 1U)

      {

        timeout --;

      }

      tmp = LL_RTC_IsActiveFlag_INIT(RTCx);

      if (timeout == 0U)

      {

        status = ERROR;

      }

    }

  }

  return status;

}

/**

  * @brief  Exit the RTC Initialization mode.

  * @note   When the initialization sequence is complete, the calendar restarts

  *         counting after 4 RTCCLK cycles.

  * @note   The RTC Initialization mode is write protected, use the

  *         @ref LL_RTC_DisableWriteProtection before calling this function.

  * @param  RTCx RTC Instance

  * @retval An ErrorStatus enumeration value:

  *          - SUCCESS: RTC exited from in Init mode

  *          - ERROR: Not applicable

  */

ErrorStatus LL_RTC_ExitInitMode(RTC_TypeDef *RTCx)

{

  /* Check the parameter */

  assert_param(IS_RTC_ALL_INSTANCE(RTCx));

  /* Disable initialization mode */

  LL_RTC_DisableInitMode(RTCx);

  return SUCCESS;

}

/**

  * @brief  Waits until the RTC Time and Day registers (RTC_TR and RTC_DR) are

  *         synchronized with RTC APB clock.

  * @note   The RTC Resynchronization mode is write protected, use the

  *         @ref LL_RTC_DisableWriteProtection before calling this function.

  * @note   To read the calendar through the shadow registers after Calendar

  *         initialization, calendar update or after wakeup from low power modes

  *         the software must first clear the RSF flag.

  *         The software must then wait until it is set again before reading

  *         the calendar, which means that the calendar registers have been

  *         correctly copied into the RTC_TR and RTC_DR shadow registers.

  * @param  RTCx RTC Instance

  * @retval An ErrorStatus enumeration value:

  *          - SUCCESS: RTC registers are synchronised

  *          - ERROR: RTC registers are not synchronised

  */

ErrorStatus LL_RTC_WaitForSynchro(RTC_TypeDef *RTCx)

{

  __IO uint32_t timeout = RTC_SYNCHRO_TIMEOUT;

  ErrorStatus status = SUCCESS;

  uint32_t tmp;

  /* Check the parameter */

  assert_param(IS_RTC_ALL_INSTANCE(RTCx));

  /* Clear RSF flag */

  LL_RTC_ClearFlag_RS(RTCx);

  /* Wait the registers to be synchronised */

  tmp = LL_RTC_IsActiveFlag_RS(RTCx);

  while ((timeout != 0U) && (tmp != 1U))

  {

    if (LL_SYSTICK_IsActiveCounterFlag() == 1U)

    {

      timeout--;

    }

    tmp = LL_RTC_IsActiveFlag_RS(RTCx);

    if (timeout == 0U)

    {

      status = ERROR;

    }

  }

  return (status);

}

/**

  * @}

  */

/**

  * @}

  */

/**

  * @}

  */

#endif /* defined(RTC) */

/**

  * @}

  */

#endif /* USE_FULL_LL_DRIVER */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/