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/**
  ******************************************************************************
  * @file    stm32f4xx_hal_rtc.h
  * @author  MCD Application Team
  * @version V1.4.1
  * @date    09-October-2015
  * @brief   Header file of RTC HAL module.
  ******************************************************************************
  * @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.
  *
  ******************************************************************************
  */ 

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F4xx_HAL_RTC_H
#define __STM32F4xx_HAL_RTC_H

#ifdef __cplusplus
 extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal_def.h"

/** @addtogroup STM32F4xx_HAL_Driver
  * @{
  */

/** @addtogroup RTC
  * @{
  */ 

/* Exported types ------------------------------------------------------------*/
/** @defgroup RTC_Exported_Types RTC Exported Types
  * @{
  */
    
/** 
  * @brief  HAL State structures definition  
  */ 
typedef enum
{
  HAL_RTC_STATE_RESET             = 0x00,  /*!< RTC not yet initialized or disabled */
  HAL_RTC_STATE_READY             = 0x01,  /*!< RTC initialized and ready for use   */
  HAL_RTC_STATE_BUSY              = 0x02,  /*!< RTC process is ongoing              */     
  HAL_RTC_STATE_TIMEOUT           = 0x03,  /*!< RTC timeout state                   */  
  HAL_RTC_STATE_ERROR             = 0x04   /*!< RTC error state                     */      
                                                                        
}HAL_RTCStateTypeDef;

/** 
  * @brief  RTC Configuration Structure definition  
  */
typedef struct
{
  uint32_t HourFormat;      /*!< Specifies the RTC Hour Format.
                                 This parameter can be a value of @ref RTC_Hour_Formats */         

  uint32_t AsynchPrediv;    /*!< Specifies the RTC Asynchronous Predivider value.
                                 This parameter must be a number between Min_Data = 0x00 and Max_Data = 0x7F */        
                               
  uint32_t SynchPrediv;     /*!< Specifies the RTC Synchronous Predivider value.
                                 This parameter must be a number between Min_Data = 0x00 and Max_Data = 0x7FFF */   
  
  uint32_t OutPut;          /*!< Specifies which signal will be routed to the RTC output.   
                                 This parameter can be a value of @ref RTC_Output_selection_Definitions */      
  
  uint32_t OutPutPolarity;  /*!< Specifies the polarity of the output signal.  
                                 This parameter can be a value of @ref RTC_Output_Polarity_Definitions */ 
  
  uint32_t OutPutType;      /*!< Specifies the RTC Output Pin mode.   
                                 This parameter can be a value of @ref RTC_Output_Type_ALARM_OUT */             
}RTC_InitTypeDef;

/** 
  * @brief  RTC Time structure definition  
  */
typedef struct
{
  uint8_t Hours;            /*!< Specifies the RTC Time Hour.
                                 This parameter must be a number between Min_Data = 0 and Max_Data = 12 if the RTC_HourFormat_12 is selected.
                                 This parameter must be a number between Min_Data = 0 and Max_Data = 23 if the RTC_HourFormat_24 is selected  */

  uint8_t Minutes;          /*!< Specifies the RTC Time Minutes.
                                 This parameter must be a number between Min_Data = 0 and Max_Data = 59 */
  
  uint8_t Seconds;          /*!< Specifies the RTC Time Seconds.
                                 This parameter must be a number between Min_Data = 0 and Max_Data = 59 */

  uint8_t TimeFormat;       /*!< Specifies the RTC AM/PM Time.
                                 This parameter can be a value of @ref RTC_AM_PM_Definitions */
  
  uint32_t SubSeconds;     /*!< Specifies the RTC_SSR RTC Sub Second register content.
                                 This parameter corresponds to a time unit range between [0-1] Second
                                 with [1 Sec / SecondFraction +1] granularity */
 
  uint32_t SecondFraction;  /*!< Specifies the range or granularity of Sub Second register content
                                 corresponding to Synchronous pre-scaler factor value (PREDIV_S)
                                 This parameter corresponds to a time unit range between [0-1] Second
                                 with [1 Sec / SecondFraction +1] granularity.
                                 This field will be used only by HAL_RTC_GetTime function */

  uint32_t DayLightSaving;  /*!< Specifies DayLight Save Operation.
                                 This parameter can be a value of @ref RTC_DayLightSaving_Definitions */
  
  uint32_t StoreOperation;  /*!< Specifies RTC_StoreOperation value to be written in the BCK bit 
                                 in CR register to store the operation.
                                 This parameter can be a value of @ref RTC_StoreOperation_Definitions */
}RTC_TimeTypeDef; 
  
/** 
  * @brief  RTC Date structure definition  
  */
typedef struct
{
  uint8_t WeekDay;  /*!< Specifies the RTC Date WeekDay.
                         This parameter can be a value of @ref RTC_WeekDay_Definitions */
  
  uint8_t Month;    /*!< Specifies the RTC Date Month (in BCD format).
                         This parameter can be a value of @ref RTC_Month_Date_Definitions */

  uint8_t Date;     /*!< Specifies the RTC Date.
                         This parameter must be a number between Min_Data = 1 and Max_Data = 31 */
  
  uint8_t Year;     /*!< Specifies the RTC Date Year.
                         This parameter must be a number between Min_Data = 0 and Max_Data = 99 */
                        
}RTC_DateTypeDef;

/** 
  * @brief  RTC Alarm structure definition  
  */
typedef struct
{
  RTC_TimeTypeDef AlarmTime;     /*!< Specifies the RTC Alarm Time members */
    
  uint32_t AlarmMask;            /*!< Specifies the RTC Alarm Masks.
                                      This parameter can be a value of @ref RTC_AlarmMask_Definitions */
  
  uint32_t AlarmSubSecondMask;   /*!< Specifies the RTC Alarm SubSeconds Masks.
                                      This parameter can be a value of @ref RTC_Alarm_Sub_Seconds_Masks_Definitions */                                   

  uint32_t AlarmDateWeekDaySel;  /*!< Specifies the RTC Alarm is on Date or WeekDay.
                                     This parameter can be a value of @ref RTC_AlarmDateWeekDay_Definitions */
  
  uint8_t AlarmDateWeekDay;      /*!< Specifies the RTC Alarm Date/WeekDay.
                                      If the Alarm Date is selected, this parameter must be set to a value in the 1-31 range.
                                      If the Alarm WeekDay is selected, this parameter can be a value of @ref RTC_WeekDay_Definitions */
                                                                     
  uint32_t Alarm;                /*!< Specifies the alarm .
                                      This parameter can be a value of @ref RTC_Alarms_Definitions */                            
}RTC_AlarmTypeDef;

/** 
  * @brief  RTC Handle Structure definition  
  */ 
typedef struct
{
  RTC_TypeDef                 *Instance;  /*!< Register base address    */
   
  RTC_InitTypeDef             Init;       /*!< RTC required parameters  */ 
  
  HAL_LockTypeDef             Lock;       /*!< RTC locking object       */
  
  __IO HAL_RTCStateTypeDef    State;      /*!< Time communication state */
    
}RTC_HandleTypeDef;

/**
  * @}
  */

/* Exported constants --------------------------------------------------------*/
/** @defgroup RTC_Exported_Constants RTC Exported Constants
  * @{
  */

/** @defgroup RTC_Hour_Formats RTC Hour Formats
  * @{
  */ 
#define RTC_HOURFORMAT_24              ((uint32_t)0x00000000)
#define RTC_HOURFORMAT_12              ((uint32_t)0x00000040)
/**
  * @}
  */ 
  
/** @defgroup RTC_Output_selection_Definitions RTC Output Selection Definitions
  * @{
  */ 
#define RTC_OUTPUT_DISABLE             ((uint32_t)0x00000000)
#define RTC_OUTPUT_ALARMA              ((uint32_t)0x00200000)
#define RTC_OUTPUT_ALARMB              ((uint32_t)0x00400000)
#define RTC_OUTPUT_WAKEUP              ((uint32_t)0x00600000)
/**
  * @}
  */ 

/** @defgroup RTC_Output_Polarity_Definitions RTC Output Polarity Definitions
  * @{
  */ 
#define RTC_OUTPUT_POLARITY_HIGH       ((uint32_t)0x00000000)
#define RTC_OUTPUT_POLARITY_LOW        ((uint32_t)0x00100000)
/**
  * @}
  */ 

/** @defgroup RTC_Output_Type_ALARM_OUT RTC Output Type ALARM OUT
  * @{
  */ 
#define RTC_OUTPUT_TYPE_OPENDRAIN      ((uint32_t)0x00000000)
#define RTC_OUTPUT_TYPE_PUSHPULL       ((uint32_t)0x00040000)
/**
  * @}
  */ 

/** @defgroup RTC_AM_PM_Definitions RTC AM PM Definitions
  * @{
  */ 
#define RTC_HOURFORMAT12_AM            ((uint8_t)0x00)
#define RTC_HOURFORMAT12_PM            ((uint8_t)0x40)
/**
  * @}
  */ 

/** @defgroup RTC_DayLightSaving_Definitions RTC DayLight Saving Definitions
  * @{
  */ 
#define RTC_DAYLIGHTSAVING_SUB1H       ((uint32_t)0x00020000)
#define RTC_DAYLIGHTSAVING_ADD1H       ((uint32_t)0x00010000)
#define RTC_DAYLIGHTSAVING_NONE        ((uint32_t)0x00000000)
/**
  * @}
  */

/** @defgroup RTC_StoreOperation_Definitions RTC Store Operation Definitions
  * @{
  */ 
#define RTC_STOREOPERATION_RESET        ((uint32_t)0x00000000)
#define RTC_STOREOPERATION_SET          ((uint32_t)0x00040000)
/**
  * @}
  */

/** @defgroup RTC_Input_parameter_format_definitions RTC Input Parameter Format Definitions
  * @{
  */ 
#define RTC_FORMAT_BIN                      ((uint32_t)0x000000000)
#define RTC_FORMAT_BCD                      ((uint32_t)0x000000001)
/**
  * @}
  */

/** @defgroup RTC_Month_Date_Definitions RTC Month Date Definitions
  * @{
  */ 
/* Coded in BCD format */
#define RTC_MONTH_JANUARY              ((uint8_t)0x01)
#define RTC_MONTH_FEBRUARY             ((uint8_t)0x02)
#define RTC_MONTH_MARCH                ((uint8_t)0x03)
#define RTC_MONTH_APRIL                ((uint8_t)0x04)
#define RTC_MONTH_MAY                  ((uint8_t)0x05)
#define RTC_MONTH_JUNE                 ((uint8_t)0x06)
#define RTC_MONTH_JULY                 ((uint8_t)0x07)
#define RTC_MONTH_AUGUST               ((uint8_t)0x08)
#define RTC_MONTH_SEPTEMBER            ((uint8_t)0x09)
#define RTC_MONTH_OCTOBER              ((uint8_t)0x10)
#define RTC_MONTH_NOVEMBER             ((uint8_t)0x11)
#define RTC_MONTH_DECEMBER             ((uint8_t)0x12)
/**
  * @}
  */ 

/** @defgroup RTC_WeekDay_Definitions RTC WeekDay Definitions
  * @{
  */   
#define RTC_WEEKDAY_MONDAY             ((uint8_t)0x01)
#define RTC_WEEKDAY_TUESDAY            ((uint8_t)0x02)
#define RTC_WEEKDAY_WEDNESDAY          ((uint8_t)0x03)
#define RTC_WEEKDAY_THURSDAY           ((uint8_t)0x04)
#define RTC_WEEKDAY_FRIDAY             ((uint8_t)0x05)
#define RTC_WEEKDAY_SATURDAY           ((uint8_t)0x06)
#define RTC_WEEKDAY_SUNDAY             ((uint8_t)0x07)
/**
  * @}
  */ 

/** @defgroup RTC_AlarmDateWeekDay_Definitions RTC Alarm Date WeekDay Definitions
  * @{
  */ 
#define RTC_ALARMDATEWEEKDAYSEL_DATE      ((uint32_t)0x00000000)
#define RTC_ALARMDATEWEEKDAYSEL_WEEKDAY   ((uint32_t)0x40000000)
/**
  * @}
  */ 

/** @defgroup RTC_AlarmMask_Definitions RTC Alarm Mask Definitions
  * @{
  */ 
#define RTC_ALARMMASK_NONE                ((uint32_t)0x00000000)
#define RTC_ALARMMASK_DATEWEEKDAY         RTC_ALRMAR_MSK4
#define RTC_ALARMMASK_HOURS               RTC_ALRMAR_MSK3
#define RTC_ALARMMASK_MINUTES             RTC_ALRMAR_MSK2
#define RTC_ALARMMASK_SECONDS             RTC_ALRMAR_MSK1
#define RTC_ALARMMASK_ALL                 ((uint32_t)0x80808080)
/**
  * @}
  */ 

/** @defgroup RTC_Alarms_Definitions RTC Alarms Definitions
  * @{
  */ 
#define RTC_ALARM_A                       RTC_CR_ALRAE
#define RTC_ALARM_B                       RTC_CR_ALRBE
/**
  * @}
  */ 

/** @defgroup RTC_Alarm_Sub_Seconds_Masks_Definitions RTC Alarm Sub Seconds Masks Definitions
  * @{
  */ 
#define RTC_ALARMSUBSECONDMASK_ALL         ((uint32_t)0x00000000)  /*!< All Alarm SS fields are masked. 
                                                                        There is no comparison on sub seconds 
                                                                        for Alarm */
#define RTC_ALARMSUBSECONDMASK_SS14_1      ((uint32_t)0x01000000)  /*!< SS[14:1] are don't care in Alarm 
                                                                        comparison. Only SS[0] is compared.    */
#define RTC_ALARMSUBSECONDMASK_SS14_2      ((uint32_t)0x02000000)  /*!< SS[14:2] are don't care in Alarm 
                                                                        comparison. Only SS[1:0] are compared  */
#define RTC_ALARMSUBSECONDMASK_SS14_3      ((uint32_t)0x03000000)  /*!< SS[14:3] are don't care in Alarm 
                                                                        comparison. Only SS[2:0] are compared  */
#define RTC_ALARMSUBSECONDMASK_SS14_4      ((uint32_t)0x04000000)  /*!< SS[14:4] are don't care in Alarm 
                                                                        comparison. Only SS[3:0] are compared  */
#define RTC_ALARMSUBSECONDMASK_SS14_5      ((uint32_t)0x05000000)  /*!< SS[14:5] are don't care in Alarm 
                                                                        comparison. Only SS[4:0] are compared  */
#define RTC_ALARMSUBSECONDMASK_SS14_6      ((uint32_t)0x06000000)  /*!< SS[14:6] are don't care in Alarm 
                                                                        comparison. Only SS[5:0] are compared  */
#define RTC_ALARMSUBSECONDMASK_SS14_7      ((uint32_t)0x07000000)  /*!< SS[14:7] are don't care in Alarm 
                                                                        comparison. Only SS[6:0] are compared  */
#define RTC_ALARMSUBSECONDMASK_SS14_8      ((uint32_t)0x08000000)  /*!< SS[14:8] are don't care in Alarm 
                                                                        comparison. Only SS[7:0] are compared  */
#define RTC_ALARMSUBSECONDMASK_SS14_9      ((uint32_t)0x09000000)  /*!< SS[14:9] are don't care in Alarm 
                                                                        comparison. Only SS[8:0] are compared  */
#define RTC_ALARMSUBSECONDMASK_SS14_10     ((uint32_t)0x0A000000)  /*!< SS[14:10] are don't care in Alarm 
                                                                        comparison. Only SS[9:0] are compared  */
#define RTC_ALARMSUBSECONDMASK_SS14_11     ((uint32_t)0x0B000000)  /*!< SS[14:11] are don't care in Alarm 
                                                                        comparison. Only SS[10:0] are compared */
#define RTC_ALARMSUBSECONDMASK_SS14_12     ((uint32_t)0x0C000000)  /*!< SS[14:12] are don't care in Alarm 
                                                                        comparison.Only SS[11:0] are compared  */
#define RTC_ALARMSUBSECONDMASK_SS14_13     ((uint32_t)0x0D000000)  /*!< SS[14:13] are don't care in Alarm 
                                                                        comparison. Only SS[12:0] are compared */
#define RTC_ALARMSUBSECONDMASK_SS14        ((uint32_t)0x0E000000)  /*!< SS[14] is don't care in Alarm 
                                                                        comparison.Only SS[13:0] are compared  */
#define RTC_ALARMSUBSECONDMASK_NONE        ((uint32_t)0x0F000000)  /*!< SS[14:0] are compared and must match 
                                                                        to activate alarm. */
/**
  * @}
  */   

/** @defgroup RTC_Interrupts_Definitions RTC Interrupts Definitions
  * @{
  */ 
#define RTC_IT_TS                         ((uint32_t)0x00008000)
#define RTC_IT_WUT                        ((uint32_t)0x00004000)
#define RTC_IT_ALRB                       ((uint32_t)0x00002000)
#define RTC_IT_ALRA                       ((uint32_t)0x00001000)
#define RTC_IT_TAMP                       ((uint32_t)0x00000004) /* Used only to Enable the Tamper Interrupt */
#define RTC_IT_TAMP1                      ((uint32_t)0x00020000)
#define RTC_IT_TAMP2                      ((uint32_t)0x00040000)
/**
  * @}
  */

/** @defgroup RTC_Flags_Definitions RTC Flags Definitions
  * @{
  */ 
#define RTC_FLAG_RECALPF                  ((uint32_t)0x00010000)
#define RTC_FLAG_TAMP2F                   ((uint32_t)0x00004000)
#define RTC_FLAG_TAMP1F                   ((uint32_t)0x00002000)
#define RTC_FLAG_TSOVF                    ((uint32_t)0x00001000)
#define RTC_FLAG_TSF                      ((uint32_t)0x00000800)
#define RTC_FLAG_WUTF                     ((uint32_t)0x00000400)
#define RTC_FLAG_ALRBF                    ((uint32_t)0x00000200)
#define RTC_FLAG_ALRAF                    ((uint32_t)0x00000100)
#define RTC_FLAG_INITF                    ((uint32_t)0x00000040)
#define RTC_FLAG_RSF                      ((uint32_t)0x00000020)
#define RTC_FLAG_INITS                    ((uint32_t)0x00000010)
#define RTC_FLAG_SHPF                     ((uint32_t)0x00000008)
#define RTC_FLAG_WUTWF                    ((uint32_t)0x00000004)
#define RTC_FLAG_ALRBWF                   ((uint32_t)0x00000002)
#define RTC_FLAG_ALRAWF                   ((uint32_t)0x00000001)
/**
  * @}
  */

/**
  * @}
  */ 
  
/* Exported macro ------------------------------------------------------------*/
/** @defgroup RTC_Exported_Macros RTC Exported Macros
  * @{
  */

/** @brief Reset RTC handle state
  * @param  __HANDLE__: specifies the RTC handle.
  * @retval None
  */
#define __HAL_RTC_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_RTC_STATE_RESET)

/**
  * @brief  Disable the write protection for RTC registers.
  * @param  __HANDLE__: specifies the RTC handle.
  * @retval None
  */
#define __HAL_RTC_WRITEPROTECTION_DISABLE(__HANDLE__)             \
                        do{                                       \
                            (__HANDLE__)->Instance->WPR = 0xCA;   \
                            (__HANDLE__)->Instance->WPR = 0x53;   \
                          } while(0)

/**
  * @brief  Enable the write protection for RTC registers.
  * @param  __HANDLE__: specifies the RTC handle.
  * @retval None
  */
#define __HAL_RTC_WRITEPROTECTION_ENABLE(__HANDLE__)              \
                        do{                                       \
                            (__HANDLE__)->Instance->WPR = 0xFF;   \
                          } while(0)                            
 
/**
  * @brief  Enable the RTC ALARMA peripheral.
  * @param  __HANDLE__: specifies the RTC handle.
  * @retval None
  */
#define __HAL_RTC_ALARMA_ENABLE(__HANDLE__)                           ((__HANDLE__)->Instance->CR |= (RTC_CR_ALRAE))

/**
  * @brief  Disable the RTC ALARMA peripheral.
  * @param  __HANDLE__: specifies the RTC handle.
  * @retval None
  */
#define __HAL_RTC_ALARMA_DISABLE(__HANDLE__)                          ((__HANDLE__)->Instance->CR &= ~(RTC_CR_ALRAE))

/**
  * @brief  Enable the RTC ALARMB peripheral.
  * @param  __HANDLE__: specifies the RTC handle.
  * @retval None
  */
#define __HAL_RTC_ALARMB_ENABLE(__HANDLE__)                           ((__HANDLE__)->Instance->CR |= (RTC_CR_ALRBE))

/**
  * @brief  Disable the RTC ALARMB peripheral.
  * @param  __HANDLE__: specifies the RTC handle.
  * @retval None
  */
#define __HAL_RTC_ALARMB_DISABLE(__HANDLE__)                          ((__HANDLE__)->Instance->CR &= ~(RTC_CR_ALRBE))

/**
  * @brief  Enable the RTC Alarm interrupt.
  * @param  __HANDLE__: specifies the RTC handle.
  * @param  __INTERRUPT__: specifies the RTC Alarm interrupt sources to be enabled or disabled. 
  *          This parameter can be any combination of the following values:
  *             @arg RTC_IT_ALRA: Alarm A interrupt
  *             @arg RTC_IT_ALRB: Alarm B interrupt  
  * @retval None
  */   
#define __HAL_RTC_ALARM_ENABLE_IT(__HANDLE__, __INTERRUPT__)          ((__HANDLE__)->Instance->CR |= (__INTERRUPT__))

/**
  * @brief  Disable the RTC Alarm interrupt.
  * @param  __HANDLE__: specifies the RTC handle.
  * @param  __INTERRUPT__: specifies the RTC Alarm interrupt sources to be enabled or disabled. 
  *         This parameter can be any combination of the following values:
  *            @arg RTC_IT_ALRA: Alarm A interrupt
  *            @arg RTC_IT_ALRB: Alarm B interrupt  
  * @retval None
  */
#define __HAL_RTC_ALARM_DISABLE_IT(__HANDLE__, __INTERRUPT__)         ((__HANDLE__)->Instance->CR &= ~(__INTERRUPT__))

/**
  * @brief  Check whether the specified RTC Alarm interrupt has occurred or not.
  * @param  __HANDLE__: specifies the RTC handle.
  * @param  __INTERRUPT__: specifies the RTC Alarm interrupt to check.
  *         This parameter can be:
  *            @arg RTC_IT_ALRA: Alarm A interrupt
  *            @arg RTC_IT_ALRB: Alarm B interrupt  
  * @retval None
  */
#define __HAL_RTC_ALARM_GET_IT(__HANDLE__, __INTERRUPT__)           (((((__HANDLE__)->Instance->ISR)& ((__INTERRUPT__)>> 4)) != RESET)? SET : RESET)

/**
  * @brief  Get the selected RTC Alarm's flag status.
  * @param  __HANDLE__: specifies the RTC handle.
  * @param  __FLAG__: specifies the RTC Alarm Flag to check.
  *         This parameter can be:
  *            @arg RTC_FLAG_ALRAF
  *            @arg RTC_FLAG_ALRBF
  *            @arg RTC_FLAG_ALRAWF     
  *            @arg RTC_FLAG_ALRBWF    
  * @retval None
  */
#define __HAL_RTC_ALARM_GET_FLAG(__HANDLE__, __FLAG__)                (((((__HANDLE__)->Instance->ISR) & (__FLAG__)) != RESET)? SET : RESET)

/**
  * @brief  Clear the RTC Alarm's pending flags.
  * @param  __HANDLE__: specifies the RTC handle.
  * @param  __FLAG__: specifies the RTC Alarm Flag sources to be enabled or disabled.
  *          This parameter can be:
  *             @arg RTC_FLAG_ALRAF
  *             @arg RTC_FLAG_ALRBF 
  * @retval None
  */
#define __HAL_RTC_ALARM_CLEAR_FLAG(__HANDLE__, __FLAG__)                  ((__HANDLE__)->Instance->ISR) = (~((__FLAG__) | RTC_ISR_INIT)|((__HANDLE__)->Instance->ISR & RTC_ISR_INIT))
  
  
/**
  * @brief  Check whether the specified RTC Alarm interrupt has been enabled or not.
  * @param  __HANDLE__: specifies the RTC handle.
  * @param  __INTERRUPT__: specifies the RTC Alarm interrupt sources to check.
  *         This parameter can be:
  *            @arg RTC_IT_ALRA: Alarm A interrupt
  *            @arg RTC_IT_ALRB: Alarm B interrupt
  * @retval None
  */
#define __HAL_RTC_ALARM_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__)     (((((__HANDLE__)->Instance->CR) & (__INTERRUPT__)) != RESET) ? SET : RESET)

/**
  * @brief  Enable interrupt on the RTC Alarm associated Exti line.
  * @retval None
  */
#define __HAL_RTC_ALARM_EXTI_ENABLE_IT()            (EXTI->IMR |= RTC_EXTI_LINE_ALARM_EVENT)

/**
  * @brief  Disable interrupt on the RTC Alarm associated Exti line.
  * @retval None
  */
#define __HAL_RTC_ALARM_EXTI_DISABLE_IT()           (EXTI->IMR &= ~(RTC_EXTI_LINE_ALARM_EVENT))

/**
  * @brief  Enable event on the RTC Alarm associated Exti line.
  * @retval None.
  */
#define __HAL_RTC_ALARM_EXTI_ENABLE_EVENT()         (EXTI->EMR |= RTC_EXTI_LINE_ALARM_EVENT)

/**
  * @brief  Disable event on the RTC Alarm associated Exti line.
  * @retval None.
  */
#define __HAL_RTC_ALARM_EXTI_DISABLE_EVENT()         (EXTI->EMR &= ~(RTC_EXTI_LINE_ALARM_EVENT))

/**
  * @brief  Enable falling edge trigger on the RTC Alarm associated Exti line.  
  * @retval None.
  */
#define __HAL_RTC_ALARM_EXTI_ENABLE_FALLING_EDGE()   (EXTI->FTSR |= RTC_EXTI_LINE_ALARM_EVENT)

/**
  * @brief  Disable falling edge trigger on the RTC Alarm associated Exti line.  
  * @retval None.
  */
#define __HAL_RTC_ALARM_EXTI_DISABLE_FALLING_EDGE()  (EXTI->FTSR &= ~(RTC_EXTI_LINE_ALARM_EVENT))

/**
  * @brief  Enable rising edge trigger on the RTC Alarm associated Exti line.  
  * @retval None.
  */
#define __HAL_RTC_ALARM_EXTI_ENABLE_RISING_EDGE()    (EXTI->RTSR |= RTC_EXTI_LINE_ALARM_EVENT)

/**
  * @brief  Disable rising edge trigger on the RTC Alarm associated Exti line.  
  * @retval None.
  */
#define __HAL_RTC_ALARM_EXTI_DISABLE_RISING_EDGE()   (EXTI->RTSR &= ~(RTC_EXTI_LINE_ALARM_EVENT))

/**
  * @brief  Enable rising & falling edge trigger on the RTC Alarm associated Exti line.  
  * @retval None.
  */
#define __HAL_RTC_ALARM_EXTI_ENABLE_RISING_FALLING_EDGE() __HAL_RTC_ALARM_EXTI_ENABLE_RISING_EDGE();__HAL_RTC_ALARM_EXTI_ENABLE_FALLING_EDGE();

/**
  * @brief  Disable rising & falling edge trigger on the RTC Alarm associated Exti line.  
  * @retval None.
  */
#define __HAL_RTC_ALARM_EXTI_DISABLE_RISING_FALLING_EDGE() __HAL_RTC_ALARM_EXTI_DISABLE_RISING_EDGE();__HAL_RTC_ALARM_EXTI_DISABLE_FALLING_EDGE();

/**
  * @brief Check whether the RTC Alarm associated Exti line interrupt flag is set or not.
  * @retval Line Status.
  */
#define __HAL_RTC_ALARM_EXTI_GET_FLAG()              (EXTI->PR & RTC_EXTI_LINE_ALARM_EVENT)

/**
  * @brief Clear the RTC Alarm associated Exti line flag.
  * @retval None.
  */
#define __HAL_RTC_ALARM_EXTI_CLEAR_FLAG()            (EXTI->PR = RTC_EXTI_LINE_ALARM_EVENT)

/**
  * @brief Generate a Software interrupt on RTC Alarm associated Exti line.
  * @retval None.
  */
#define __HAL_RTC_ALARM_EXTI_GENERATE_SWIT()         (EXTI->SWIER |= RTC_EXTI_LINE_ALARM_EVENT)
/**
  * @}
  */

/* Include RTC HAL Extension module */
#include "stm32f4xx_hal_rtc_ex.h"

/* Exported functions --------------------------------------------------------*/
/** @addtogroup RTC_Exported_Functions
  * @{
  */

/** @addtogroup RTC_Exported_Functions_Group1
  * @{
  */
/* Initialization and de-initialization functions  ****************************/
HAL_StatusTypeDef HAL_RTC_Init(RTC_HandleTypeDef *hrtc);
HAL_StatusTypeDef HAL_RTC_DeInit(RTC_HandleTypeDef *hrtc);
void       HAL_RTC_MspInit(RTC_HandleTypeDef *hrtc);
void       HAL_RTC_MspDeInit(RTC_HandleTypeDef *hrtc);
/**
  * @}
  */

/** @addtogroup RTC_Exported_Functions_Group2
  * @{
  */
/* RTC Time and Date functions ************************************************/
HAL_StatusTypeDef HAL_RTC_SetTime(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef *sTime, uint32_t Format);
HAL_StatusTypeDef HAL_RTC_GetTime(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef *sTime, uint32_t Format);
HAL_StatusTypeDef HAL_RTC_SetDate(RTC_HandleTypeDef *hrtc, RTC_DateTypeDef *sDate, uint32_t Format);
HAL_StatusTypeDef HAL_RTC_GetDate(RTC_HandleTypeDef *hrtc, RTC_DateTypeDef *sDate, uint32_t Format);
/**
  * @}
  */

/** @addtogroup RTC_Exported_Functions_Group3
  * @{
  */
/* RTC Alarm functions ********************************************************/
HAL_StatusTypeDef HAL_RTC_SetAlarm(RTC_HandleTypeDef *hrtc, RTC_AlarmTypeDef *sAlarm, uint32_t Format);
HAL_StatusTypeDef HAL_RTC_SetAlarm_IT(RTC_HandleTypeDef *hrtc, RTC_AlarmTypeDef *sAlarm, uint32_t Format);
HAL_StatusTypeDef HAL_RTC_DeactivateAlarm(RTC_HandleTypeDef *hrtc, uint32_t Alarm);
HAL_StatusTypeDef HAL_RTC_GetAlarm(RTC_HandleTypeDef *hrtc, RTC_AlarmTypeDef *sAlarm, uint32_t Alarm, uint32_t Format);
void                HAL_RTC_AlarmIRQHandler(RTC_HandleTypeDef *hrtc);
HAL_StatusTypeDef   HAL_RTC_PollForAlarmAEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout);
void         HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc);
/**
  * @}
  */

/** @addtogroup RTC_Exported_Functions_Group4
  * @{
  */
/* Peripheral Control functions ***********************************************/
HAL_StatusTypeDef   HAL_RTC_WaitForSynchro(RTC_HandleTypeDef* hrtc);
/**
  * @}
  */

/** @addtogroup RTC_Exported_Functions_Group5
  * @{
  */
/* Peripheral State functions *************************************************/
HAL_RTCStateTypeDef HAL_RTC_GetState(RTC_HandleTypeDef *hrtc);
/**
  * @}
  */

/**
  * @}
  */

/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @defgroup RTC_Private_Constants RTC Private Constants
  * @{
  */
/* Masks Definition */
#define RTC_TR_RESERVED_MASK    ((uint32_t)0x007F7F7F)
#define RTC_DR_RESERVED_MASK    ((uint32_t)0x00FFFF3F) 
#define RTC_INIT_MASK           ((uint32_t)0xFFFFFFFF)  
#define RTC_RSF_MASK            ((uint32_t)0xFFFFFF5F)
#define RTC_FLAGS_MASK          ((uint32_t)(RTC_FLAG_TSOVF | RTC_FLAG_TSF | RTC_FLAG_WUTF | \
                                            RTC_FLAG_ALRBF | RTC_FLAG_ALRAF | RTC_FLAG_INITF | \
                                            RTC_FLAG_RSF | RTC_FLAG_INITS | RTC_FLAG_WUTWF | \
                                            RTC_FLAG_ALRBWF | RTC_FLAG_ALRAWF | RTC_FLAG_TAMP1F | \
                                            RTC_FLAG_RECALPF | RTC_FLAG_SHPF))

#define RTC_TIMEOUT_VALUE       1000

#define RTC_EXTI_LINE_ALARM_EVENT             ((uint32_t)EXTI_IMR_MR17)  /*!< External interrupt line 17 Connected to the RTC Alarm event */
/**
  * @}
  */

/* Private macros ------------------------------------------------------------*/
/** @defgroup RTC_Private_Macros RTC Private Macros
  * @{
  */

/** @defgroup RTC_IS_RTC_Definitions RTC Private macros to check input parameters
  * @{
  */
#define IS_RTC_HOUR_FORMAT(FORMAT)     (((FORMAT) == RTC_HOURFORMAT_12) || \
                                        ((FORMAT) == RTC_HOURFORMAT_24))
#define IS_RTC_OUTPUT(OUTPUT) (((OUTPUT) == RTC_OUTPUT_DISABLE) || \
                               ((OUTPUT) == RTC_OUTPUT_ALARMA)  || \
                               ((OUTPUT) == RTC_OUTPUT_ALARMB)  || \
                               ((OUTPUT) == RTC_OUTPUT_WAKEUP))
#define IS_RTC_OUTPUT_POL(POL) (((POL) == RTC_OUTPUT_POLARITY_HIGH) || \
                                ((POL) == RTC_OUTPUT_POLARITY_LOW))
#define IS_RTC_OUTPUT_TYPE(TYPE) (((TYPE) == RTC_OUTPUT_TYPE_OPENDRAIN) || \
                                  ((TYPE) == RTC_OUTPUT_TYPE_PUSHPULL))
#define IS_RTC_HOUR12(HOUR)            (((HOUR) > (uint32_t)0) && ((HOUR) <= (uint32_t)12))
#define IS_RTC_HOUR24(HOUR)            ((HOUR) <= (uint32_t)23)
#define IS_RTC_ASYNCH_PREDIV(PREDIV)   ((PREDIV) <= (uint32_t)0x7F)
#define IS_RTC_SYNCH_PREDIV(PREDIV)    ((PREDIV) <= (uint32_t)0x7FFF)
#define IS_RTC_MINUTES(MINUTES)        ((MINUTES) <= (uint32_t)59)
#define IS_RTC_SECONDS(SECONDS)        ((SECONDS) <= (uint32_t)59)

#define IS_RTC_HOURFORMAT12(PM)  (((PM) == RTC_HOURFORMAT12_AM) || ((PM) == RTC_HOURFORMAT12_PM))
#define IS_RTC_DAYLIGHT_SAVING(SAVE) (((SAVE) == RTC_DAYLIGHTSAVING_SUB1H) || \
                                      ((SAVE) == RTC_DAYLIGHTSAVING_ADD1H) || \
                                      ((SAVE) == RTC_DAYLIGHTSAVING_NONE))
#define IS_RTC_STORE_OPERATION(OPERATION) (((OPERATION) == RTC_STOREOPERATION_RESET) || \
                                           ((OPERATION) == RTC_STOREOPERATION_SET))
#define IS_RTC_FORMAT(FORMAT) (((FORMAT) == RTC_FORMAT_BIN) || ((FORMAT) == RTC_FORMAT_BCD))
#define IS_RTC_YEAR(YEAR)              ((YEAR) <= (uint32_t)99)
#define IS_RTC_MONTH(MONTH)            (((MONTH) >= (uint32_t)1) && ((MONTH) <= (uint32_t)12))
#define IS_RTC_DATE(DATE)              (((DATE) >= (uint32_t)1) && ((DATE) <= (uint32_t)31))
#define IS_RTC_WEEKDAY(WEEKDAY) (((WEEKDAY) == RTC_WEEKDAY_MONDAY)    || \
                                 ((WEEKDAY) == RTC_WEEKDAY_TUESDAY)   || \
                                 ((WEEKDAY) == RTC_WEEKDAY_WEDNESDAY) || \
                                 ((WEEKDAY) == RTC_WEEKDAY_THURSDAY)  || \
                                 ((WEEKDAY) == RTC_WEEKDAY_FRIDAY)    || \
                                 ((WEEKDAY) == RTC_WEEKDAY_SATURDAY)  || \
                                 ((WEEKDAY) == RTC_WEEKDAY_SUNDAY))
#define IS_RTC_ALARM_DATE_WEEKDAY_DATE(DATE) (((DATE) >(uint32_t) 0) && ((DATE) <= (uint32_t)31))
#define IS_RTC_ALARM_DATE_WEEKDAY_WEEKDAY(WEEKDAY) (((WEEKDAY) == RTC_WEEKDAY_MONDAY)    || \
                                                    ((WEEKDAY) == RTC_WEEKDAY_TUESDAY)   || \
                                                    ((WEEKDAY) == RTC_WEEKDAY_WEDNESDAY) || \
                                                    ((WEEKDAY) == RTC_WEEKDAY_THURSDAY)  || \
                                                    ((WEEKDAY) == RTC_WEEKDAY_FRIDAY)    || \
                                                    ((WEEKDAY) == RTC_WEEKDAY_SATURDAY)  || \
                                                    ((WEEKDAY) == RTC_WEEKDAY_SUNDAY))
#define IS_RTC_ALARM_DATE_WEEKDAY_SEL(SEL) (((SEL) == RTC_ALARMDATEWEEKDAYSEL_DATE) || \
                                            ((SEL) == RTC_ALARMDATEWEEKDAYSEL_WEEKDAY))
#define IS_RTC_ALARM_MASK(MASK)  (((MASK) & 0x7F7F7F7F) == (uint32_t)RESET)
#define IS_RTC_ALARM(ALARM)      (((ALARM) == RTC_ALARM_A) || ((ALARM) == RTC_ALARM_B))
#define IS_RTC_ALARM_SUB_SECOND_VALUE(VALUE) ((VALUE) <= (uint32_t)0x00007FFF)

#define IS_RTC_ALARM_SUB_SECOND_MASK(MASK)   (((MASK) == RTC_ALARMSUBSECONDMASK_ALL) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_1) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_2) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_3) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_4) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_5) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_6) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_7) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_8) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_9) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_10) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_11) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_12) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14_13) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_SS14) || \
                                              ((MASK) == RTC_ALARMSUBSECONDMASK_NONE))
/**
  * @}
  */

/**
  * @}
  */

/* Private functions ---------------------------------------------------------*/
/** @defgroup RTC_Private_Functions RTC Private Functions
  * @{
  */
HAL_StatusTypeDef  RTC_EnterInitMode(RTC_HandleTypeDef* hrtc);
uint8_t            RTC_ByteToBcd2(uint8_t Value);
uint8_t            RTC_Bcd2ToByte(uint8_t Value);
/**
  * @}
  */

/**
  * @}
  */ 

/**
  * @}
  */ 
  
#ifdef __cplusplus
}
#endif

#endif /* __STM32F4xx_HAL_RTC_H */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
tter Paul Selkirk <paul@psgd.org> 2016-04-14 18:50:38 -0400 import mbed rtos library' href='/sw/stm32/commit/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/stm32f4xx_hal_spdifrx.c?h=ice40mkm&id=4a38cf6f44d1c013cbe794093ea6c5b50337431a'>4a38cf6
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/**
  ******************************************************************************
  * @file    stm32f4xx_hal_spdifrx.c
  * @author  MCD Application Team
  * @version V1.4.1
  * @date    09-October-2015
  * @brief   This file provides firmware functions to manage the following 
  *          functionalities of the SPDIFRX audio interface:
  *           + Initialization and Configuration
  *           + Data transfers functions
  *           + DMA transfers management
  *           + Interrupts and flags management 
  @verbatim
 ===============================================================================
                  ##### How to use this driver #####
 ===============================================================================
 [..]
    The SPDIFRX HAL driver can be used as follow:
    
    (#) Declare SPDIFRX_HandleTypeDef handle structure.
    (#) Initialize the SPDIFRX low level resources by implement the HAL_SPDIFRX_MspInit() API:
        (##) Enable the SPDIFRX interface clock.                      
        (##) SPDIFRX pins configuration:
            (+++) Enable the clock for the SPDIFRX GPIOs.
            (+++) Configure these SPDIFRX pins as alternate function pull-up.
        (##) NVIC configuration if you need to use interrupt process (HAL_SPDIFRX_ReceiveControlFlow_IT() and HAL_SPDIFRX_ReceiveDataFlow_IT() API's).
            (+++) Configure the SPDIFRX interrupt priority.
            (+++) Enable the NVIC SPDIFRX IRQ handle.
        (##) DMA Configuration if you need to use DMA process (HAL_SPDIFRX_ReceiveDataFlow_DMA() and HAL_SPDIFRX_ReceiveControlFlow_DMA() API's).
            (+++) Declare a DMA handle structure for the reception of the Data Flow channel.
                      (+++) Declare a DMA handle structure for the reception of the Control Flow channel.
            (+++) Enable the DMAx interface clock.
            (+++) Configure the declared DMA handle structure CtrlRx/DataRx with the required parameters.
            (+++) Configure the DMA Channel.
            (+++) Associate the initialized DMA handle to the SPDIFRX DMA CtrlRx/DataRx handle.
            (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the 
                DMA CtrlRx/DataRx channel.
  
   (#) Program the input selection, re-tries number, wait for activity, channel status selection, data format, stereo mode and masking of user bits
       using HAL_SPDIFRX_Init() function.

   -@- The specific SPDIFRX interrupts (RXNE/CSRNE and Error Interrupts) will be managed using the macros
       __SPDIFRX_ENABLE_IT() and __SPDIFRX_DISABLE_IT() inside the receive process.
   -@- Make sure that ck_spdif clock is configured. 
   
   (#) Three operation modes are available within this driver :
  
   *** Polling mode for reception operation (for debug purpose) ***
   ================================================================
   [..]    
     (+) Receive data flow in blocking mode using HAL_SPDIFRX_ReceiveDataFlow()
         (+) Receive control flow of data in blocking mode using HAL_SPDIFRX_ReceiveControlFlow()
   
   *** Interrupt mode for reception operation ***
   =========================================
   [..]    
     (+) Receive an amount of data (Data Flow) in non blocking mode using HAL_SPDIFRX_ReceiveDataFlow_IT() 
         (+) Receive an amount of data (Control Flow) in non blocking mode using HAL_SPDIFRX_ReceiveControlFlow_IT() 
     (+) At reception end of half transfer HAL_SPDIFRX_RxHalfCpltCallback is executed and user can 
         add his own code by customization of function pointer HAL_SPDIFRX_RxHalfCpltCallback 
     (+) At reception end of transfer HAL_SPDIFRX_RxCpltCallback is executed and user can 
         add his own code by customization of function pointer HAL_SPDIFRX_RxCpltCallback
     (+) In case of transfer Error, HAL_SPDIFRX_ErrorCallback() function is executed and user can 
         add his own code by customization of function pointer HAL_SPDIFRX_ErrorCallback

   *** DMA mode for reception operation ***
   ========================================
   [..] 
     (+) Receive an amount of data (Data Flow) in non blocking mode (DMA) using HAL_SPDIFRX_ReceiveDataFlow_DMA() 
         (+) Receive an amount of data (Control Flow) in non blocking mode (DMA) using HAL_SPDIFRX_ReceiveControlFlow_DMA() 
     (+) At reception end of half transfer HAL_SPDIFRX_RxHalfCpltCallback is executed and user can 
         add his own code by customization of function pointer HAL_SPDIFRX_RxHalfCpltCallback 
     (+) At reception end of transfer HAL_SPDIFRX_RxCpltCallback is executed and user can 
         add his own code by customization of function pointer HAL_SPDIFRX_RxCpltCallback
     (+) In case of transfer Error, HAL_SPDIFRX_ErrorCallback() function is executed and user can 
         add his own code by customization of function pointer HAL_SPDIFRX_ErrorCallback
     (+) Stop the DMA Transfer using HAL_SPDIFRX_DMAStop()

   *** SPDIFRX HAL driver macros list ***
   =============================================
   [..]
     Below the list of most used macros in USART HAL driver.
      (+) __HAL_SPDIFRX_IDLE: Disable the specified SPDIFRX peripheral (IDEL State)
      (+) __HAL_SPDIFRX_SYNC: Enable the synchronization state of the specified SPDIFRX peripheral (SYNC State) 
      (+) __HAL_SPDIFRX_RCV: Enable the receive state of the specified SPDIFRX peripheral (RCV State)
      (+) __HAL_SPDIFRX_ENABLE_IT : Enable the specified SPDIFRX interrupts
      (+) __HAL_SPDIFRX_DISABLE_IT : Disable the specified SPDIFRX interrupts
      (+) __HAL_SPDIFRX_GET_FLAG: Check whether the specified SPDIFRX flag is set or not.

    [..]
      (@) You can refer to the SPDIFRX HAL driver header file for more useful macros

  @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 SPDIFRX SPDIFRX
  * @brief SPDIFRX HAL module driver
  * @{
  */

#ifdef HAL_SPDIFRX_MODULE_ENABLED

#if defined(STM32F446xx)

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define SPDIFRX_TIMEOUT_VALUE  0xFFFF

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/** @addtogroup SPDIFRX_Private_Functions
  * @{
  */
static void  SPDIFRX_DMARxCplt(DMA_HandleTypeDef *hdma);
static void  SPDIFRX_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
static void  SPDIFRX_DMACxCplt(DMA_HandleTypeDef *hdma);
static void  SPDIFRX_DMACxHalfCplt(DMA_HandleTypeDef *hdma);
static void  SPDIFRX_DMAError(DMA_HandleTypeDef *hdma);
static void  SPDIFRX_ReceiveControlFlow_IT(SPDIFRX_HandleTypeDef *hspdif);
static void  SPDIFRX_ReceiveDataFlow_IT(SPDIFRX_HandleTypeDef *hspdif);
static HAL_StatusTypeDef  SPDIFRX_WaitOnFlagUntilTimeout(SPDIFRX_HandleTypeDef *hspdif, uint32_t Flag, FlagStatus Status, uint32_t Timeout);
/**
  * @}
  */
/* Exported functions ---------------------------------------------------------*/

/** @defgroup SPDIFRX_Exported_Functions SPDIFRX Exported Functions
  * @{
  */

/** @defgroup  SPDIFRX_Exported_Functions_Group1 Initialization and de-initialization functions 
  *  @brief    Initialization and Configuration functions 
  *
  @verbatim    
  ===============================================================================
  ##### Initialization and de-initialization functions #####
  ===============================================================================
  [..]  This subsection provides a set of functions allowing to initialize and 
  de-initialize the SPDIFRX peripheral:
  
  (+) User must Implement HAL_SPDIFRX_MspInit() function in which he configures 
  all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC ).
  
  (+) Call the function HAL_SPDIFRX_Init() to configure the SPDIFRX peripheral with 
  the selected configuration:
  (++) Input Selection (IN0, IN1,...)
  (++) Maximum allowed re-tries during synchronization phase
  (++) Wait for activity on SPDIF selected input
  (++) Channel status selection (from channel A or B)
  (++) Data format (LSB, MSB, ...)
  (++) Stereo mode
  (++) User bits masking (PT,C,U,V,...)
  
  (+) Call the function HAL_SPDIFRX_DeInit() to restore the default configuration 
  of the selected SPDIFRXx peripheral. 
  @endverbatim
  * @{
  */

/**
  * @brief Initializes the SPDIFRX according to the specified parameters 
  *        in the SPDIFRX_InitTypeDef and create the associated handle.
  * @param hspdif: SPDIFRX handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SPDIFRX_Init(SPDIFRX_HandleTypeDef *hspdif)
{
  uint32_t tmpreg = 0;
  
  /* Check the SPDIFRX handle allocation */
  if(hspdif == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check the SPDIFRX parameters */
  assert_param(IS_STEREO_MODE(hspdif->Init.StereoMode));
  assert_param(IS_SPDIFRX_INPUT_SELECT(hspdif->Init.InputSelection));
  assert_param(IS_SPDIFRX_MAX_RETRIES(hspdif->Init.Retries));
  assert_param(IS_SPDIFRX_WAIT_FOR_ACTIVITY(hspdif->Init.WaitForActivity));
  assert_param(IS_SPDIFRX_CHANNEL(hspdif->Init.ChannelSelection));
  assert_param(IS_SPDIFRX_DATA_FORMAT(hspdif->Init.DataFormat));
  assert_param(IS_PREAMBLE_TYPE_MASK(hspdif->Init.PreambleTypeMask));
  assert_param(IS_CHANNEL_STATUS_MASK(hspdif->Init.ChannelStatusMask));
  assert_param(IS_VALIDITY_MASK(hspdif->Init.ValidityBitMask));
  assert_param(IS_PARITY_ERROR_MASK(hspdif->Init.ParityErrorMask));
  
  if(hspdif->State == HAL_SPDIFRX_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    hspdif->Lock = HAL_UNLOCKED;
    /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */
    HAL_SPDIFRX_MspInit(hspdif);
  }
  
     /* SPDIFRX peripheral state is BUSY*/
   hspdif->State = HAL_SPDIFRX_STATE_BUSY;  
  
  /* Disable SPDIFRX interface (IDLE State) */
  __HAL_SPDIFRX_IDLE(hspdif);
  
  /* Reset the old SPDIFRX CR configuration */
  tmpreg = hspdif->Instance->CR;
  
  tmpreg &= ~((uint16_t) SPDIFRX_CR_RXSTEO  | SPDIFRX_CR_DRFMT  | SPDIFRX_CR_PMSK |
                         SPDIFRX_CR_VMSK | SPDIFRX_CR_CUMSK | SPDIFRX_CR_PTMSK  |
                         SPDIFRX_CR_CHSEL | SPDIFRX_CR_NBTR | SPDIFRX_CR_WFA |
                         SPDIFRX_CR_INSEL); 
                  
  /* Sets the new configuration of the SPDIFRX peripheral */
  tmpreg |= ((uint16_t) hspdif->Init.StereoMode |
                        hspdif->Init.InputSelection |
                        hspdif->Init.Retries |
                        hspdif->Init.WaitForActivity |
                        hspdif->Init.ChannelSelection |
                        hspdif->Init.DataFormat |
                        hspdif->Init.PreambleTypeMask |
                        hspdif->Init.ChannelStatusMask |
                        hspdif->Init.ValidityBitMask |
                        hspdif->Init.ParityErrorMask);

  hspdif->Instance->CR = tmpreg;  
  
  hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
    
    /* SPDIFRX peripheral state is READY*/
  hspdif->State = HAL_SPDIFRX_STATE_READY;
  
  return HAL_OK;
}

/**
  * @brief DeInitializes the SPDIFRX peripheral 
  * @param hspdif: SPDIFRX handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SPDIFRX_DeInit(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Check the SPDIFRX handle allocation */
  if(hspdif == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check the parameters */
  assert_param(IS_SPDIFRX_ALL_INSTANCE(hspdif->Instance));

  hspdif->State = HAL_SPDIFRX_STATE_BUSY;
  
  /* Disable SPDIFRX interface (IDLE state) */
  __HAL_SPDIFRX_IDLE(hspdif);

  /* DeInit the low level hardware: GPIO, CLOCK, NVIC... */
  HAL_SPDIFRX_MspDeInit(hspdif);
  
  hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
    
    /* SPDIFRX peripheral state is RESET*/
  hspdif->State = HAL_SPDIFRX_STATE_RESET;
  
  /* Release Lock */
  __HAL_UNLOCK(hspdif);

  return HAL_OK;
}

/**
  * @brief SPDIFRX MSP Init
  * @param hspdif: SPDIFRX handle
  * @retval None
  */
__weak void HAL_SPDIFRX_MspInit(SPDIFRX_HandleTypeDef *hspdif)
{
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_MspInit could be implemented in the user file
  */ 
}

/**
  * @brief SPDIFRX MSP DeInit
  * @param hspdif: SPDIFRX handle
  * @retval None
  */
__weak void HAL_SPDIFRX_MspDeInit(SPDIFRX_HandleTypeDef *hspdif)
{
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_MspDeInit could be implemented in the user file
  */ 
}

/**
  * @brief Sets the SPDIFRX  dtat format according to the specified parameters 
  *        in the SPDIFRX_InitTypeDef.
  * @param hspdif: SPDIFRX handle
  * @param sDataFormat: SPDIFRX data format
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SPDIFRX_SetDataFormat(SPDIFRX_HandleTypeDef *hspdif, SPDIFRX_SetDataFormatTypeDef  sDataFormat)
{
  uint32_t tmpreg = 0;
  
  /* Check the SPDIFRX handle allocation */
  if(hspdif == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check the SPDIFRX parameters */
  assert_param(IS_STEREO_MODE(sDataFormat.StereoMode));
  assert_param(IS_SPDIFRX_DATA_FORMAT(sDataFormat.DataFormat));
  assert_param(IS_PREAMBLE_TYPE_MASK(sDataFormat.PreambleTypeMask));
  assert_param(IS_CHANNEL_STATUS_MASK(sDataFormat.ChannelStatusMask));
  assert_param(IS_VALIDITY_MASK(sDataFormat.ValidityBitMask));
  assert_param(IS_PARITY_ERROR_MASK(sDataFormat.ParityErrorMask));
  
  /* Reset the old SPDIFRX CR configuration */
  tmpreg = hspdif->Instance->CR;
  
  if(((tmpreg & SPDIFRX_STATE_RCV) == SPDIFRX_STATE_RCV) &&
    (((tmpreg & SPDIFRX_CR_DRFMT) != sDataFormat.DataFormat) ||
    ((tmpreg & SPDIFRX_CR_RXSTEO) != sDataFormat.StereoMode)))  
  {
      return HAL_ERROR;    
  }  
  
  tmpreg &= ~((uint16_t) SPDIFRX_CR_RXSTEO  | SPDIFRX_CR_DRFMT  | SPDIFRX_CR_PMSK |
                         SPDIFRX_CR_VMSK | SPDIFRX_CR_CUMSK | SPDIFRX_CR_PTMSK);   
  
  /* Sets the new configuration of the SPDIFRX peripheral */
  tmpreg |= ((uint16_t) sDataFormat.StereoMode |
                        sDataFormat.DataFormat |
                        sDataFormat.PreambleTypeMask |
                        sDataFormat.ChannelStatusMask |
                        sDataFormat.ValidityBitMask |
                        sDataFormat.ParityErrorMask);

  hspdif->Instance->CR = tmpreg;  
  
  return HAL_OK;
}

/**
  * @}
  */

/** @defgroup SPDIFRX_Exported_Functions_Group2 IO operation functions 
  *  @brief Data transfers functions 
  *
@verbatim   
===============================================================================
##### IO operation functions #####
===============================================================================  
    [..]
    This subsection provides a set of functions allowing to manage the SPDIFRX data 
    transfers.

    (#) There is two mode of transfer:
        (++) Blocking mode : The communication is performed in the polling mode. 
             The status of all data processing is returned by the same function 
             after finishing transfer.  
        (++) No-Blocking mode : The communication is performed using Interrupts 
             or DMA. These functions return the status of the transfer start-up.
             The end of the data processing will be indicated through the 
             dedicated SPDIFRX IRQ when using Interrupt mode or the DMA IRQ when 
             using DMA mode.

    (#) Blocking mode functions are :
        (++) HAL_SPDIFRX_ReceiveDataFlow()
        (++) HAL_SPDIFRX_ReceiveControlFlow()
                (+@) Do not use blocking mode to receive both control and data flow at the same time.

    (#) No-Blocking mode functions with Interrupt are :
        (++) HAL_SPDIFRX_ReceiveControlFlow_IT()
        (++) HAL_SPDIFRX_ReceiveDataFlow_IT()

    (#) No-Blocking mode functions with DMA are :
        (++) HAL_SPDIFRX_ReceiveControlFlow_DMA()
        (++) HAL_SPDIFRX_ReceiveDataFlow_DMA()

    (#) A set of Transfer Complete Callbacks are provided in No_Blocking mode:
        (++) HAL_SPDIFRX_RxCpltCallback()
        (++) HAL_SPDIFRX_ErrorCallback()

@endverbatim
  * @{
  */

/**
  * @brief  Receives an amount of data (Data Flow) in blocking mode. 
  * @param  hspdif: pointer to SPDIFRX_HandleTypeDef structure that contains
  *                 the configuration information for SPDIFRX module.
  * @param  pData: Pointer to data buffer
  * @param  Size: Amount of data to be received
  * @param  Timeout: Timeout duration
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SPDIFRX_ReceiveDataFlow(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size, uint32_t Timeout)
{
 
  if((pData == NULL ) || (Size == 0)) 
  {
    return  HAL_ERROR;
  }
  
  if(hspdif->State == HAL_SPDIFRX_STATE_READY)
  { 
    /* Process Locked */
    __HAL_LOCK(hspdif);
    
     hspdif->State = HAL_SPDIFRX_STATE_BUSY;

        /* Start synchronisation */
        __HAL_SPDIFRX_SYNC(hspdif);
        
            /* Wait until SYNCD flag is set */
      if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_SYNCD, RESET, Timeout) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
    
            /* Start reception */    
      __HAL_SPDIFRX_RCV(hspdif);
            
    /* Receive data flow */
    while(Size > 0)
    {      
      /* Wait until RXNE flag is set */
      if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_RXNE, RESET, Timeout) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
      
      (*pData++) = hspdif->Instance->DR;
      Size--; 
    }      

    /* SPDIFRX ready */
    hspdif->State = HAL_SPDIFRX_STATE_READY;

    /* Process Unlocked */
    __HAL_UNLOCK(hspdif);
    
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}

/**
  * @brief  Receives an amount of data (Control Flow) in blocking mode. 
  * @param  hspdif: pointer to a SPDIFRX_HandleTypeDef structure that contains
  *                 the configuration information for SPDIFRX module.
  * @param  pData: Pointer to data buffer
  * @param  Size: Amount of data to be received
  * @param  Timeout: Timeout duration
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SPDIFRX_ReceiveControlFlow(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size, uint32_t Timeout)
{
 
  if((pData == NULL ) || (Size == 0)) 
  {
    return  HAL_ERROR;
  }
  
  if(hspdif->State == HAL_SPDIFRX_STATE_READY)
  { 
    /* Process Locked */
    __HAL_LOCK(hspdif);
    
     hspdif->State = HAL_SPDIFRX_STATE_BUSY;
        
        /* Start synchronization */
        __HAL_SPDIFRX_SYNC(hspdif);
        
        /* Wait until SYNCD flag is set */
      if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_SYNCD, RESET, Timeout) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
            
        /* Start reception */    
      __HAL_SPDIFRX_RCV(hspdif);
   
        /* Receive control flow */
    while(Size > 0)
    {      
      /* Wait until CSRNE flag is set */
      if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_CSRNE, RESET, Timeout) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
      
      (*pData++) = hspdif->Instance->CSR;
      Size--; 
    }      

    /* SPDIFRX ready */
    hspdif->State = HAL_SPDIFRX_STATE_READY;

    /* Process Unlocked */
    __HAL_UNLOCK(hspdif);
    
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
/**
  * @brief Receive an amount of data (Data Flow) in non-blocking mode with Interrupt
  * @param hspdif: SPDIFRX handle
  * @param pData: a 32-bit pointer to the Receive data buffer.
  * @param Size: number of data sample to be received .
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SPDIFRX_ReceiveDataFlow_IT(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size)
{
 if((hspdif->State == HAL_SPDIFRX_STATE_READY) || (hspdif->State == HAL_SPDIFRX_STATE_BUSY_CX))
  {
    if((pData == NULL) || (Size == 0)) 
    {
      return HAL_ERROR;
    }

    /* Process Locked */
    __HAL_LOCK(hspdif);

    hspdif->pRxBuffPtr = pData;
    hspdif->RxXferSize = Size;
    hspdif->RxXferCount = Size;

    hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
    
    /* Check if a receive process is ongoing or not */
     hspdif->State = HAL_SPDIFRX_STATE_BUSY_RX;

        
    /* Enable the SPDIFRX  PE Error Interrupt */
    __HAL_SPDIFRX_ENABLE_IT(hspdif, SPDIFRX_IT_PERRIE);

    /* Enable the SPDIFRX  OVR Error Interrupt */
    __HAL_SPDIFRX_ENABLE_IT(hspdif, SPDIFRX_IT_OVRIE);

    /* Process Unlocked */
    __HAL_UNLOCK(hspdif);

    /* Enable the SPDIFRX RXNE interrupt */
    __HAL_SPDIFRX_ENABLE_IT(hspdif, SPDIFRX_IT_RXNE);
        
        if ((SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != SPDIFRX_STATE_SYNC || (SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != 0x00) 
        {
        /* Start synchronization */
        __HAL_SPDIFRX_SYNC(hspdif);
        
        /* Wait until SYNCD flag is set */
      if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_SYNCD, RESET, SPDIFRX_TIMEOUT_VALUE) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
            
        /* Start reception */    
      __HAL_SPDIFRX_RCV(hspdif);
        }

    return HAL_OK;
  }
  else
  {
    return HAL_BUSY; 
  }
}

/**
  * @brief Receive an amount of data (Control Flow) with Interrupt
  * @param hspdif: SPDIFRX handle
  * @param pData: a 32-bit pointer to the Receive data buffer.
  * @param Size: number of data sample (Control Flow) to be received :
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SPDIFRX_ReceiveControlFlow_IT(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size)
{
 if((hspdif->State == HAL_SPDIFRX_STATE_READY) || (hspdif->State == HAL_SPDIFRX_STATE_BUSY_RX))
  {
    if((pData == NULL ) || (Size == 0)) 
    {
      return HAL_ERROR;
    }

    /* Process Locked */
    __HAL_LOCK(hspdif);

    hspdif->pCsBuffPtr = pData;
    hspdif->CsXferSize = Size;
    hspdif->CsXferCount = Size;

    hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
    
    /* Check if a receive process is ongoing or not */
     hspdif->State = HAL_SPDIFRX_STATE_BUSY_CX;


    /* Enable the SPDIFRX PE Error Interrupt */
     __HAL_SPDIFRX_ENABLE_IT(hspdif, SPDIFRX_IT_PERRIE);

    /* Enable the SPDIFRX OVR Error Interrupt */
     __HAL_SPDIFRX_ENABLE_IT(hspdif, SPDIFRX_IT_OVRIE);

    /* Process Unlocked */
    __HAL_UNLOCK(hspdif);

    /* Enable the SPDIFRX CSRNE interrupt */
    __HAL_SPDIFRX_ENABLE_IT(hspdif, SPDIFRX_IT_CSRNE);
        
        if ((SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != SPDIFRX_STATE_SYNC || (SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != 0x00) 
        {
        /* Start synchronization */
        __HAL_SPDIFRX_SYNC(hspdif);
        
        /* Wait until SYNCD flag is set */
      if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_SYNCD, RESET, SPDIFRX_TIMEOUT_VALUE) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
                        
        /* Start reception */    
      __HAL_SPDIFRX_RCV(hspdif);
      }
        
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY; 
  }
}

/**
  * @brief Receive an amount of data (Data Flow) mode with DMA 
  * @param hspdif: SPDIFRX handle
  * @param pData: a 32-bit pointer to the Receive data buffer.
  * @param Size: number of data sample to be received :
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SPDIFRX_ReceiveDataFlow_DMA(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size)
{
  
  if((pData == NULL) || (Size == 0)) 
  {
    return  HAL_ERROR;                                    
  } 
  
  if((hspdif->State == HAL_SPDIFRX_STATE_READY) || (hspdif->State == HAL_SPDIFRX_STATE_BUSY_CX))
  {   
    hspdif->pRxBuffPtr = pData;
    hspdif->RxXferSize = Size;
    hspdif->RxXferCount = Size;

    /* Process Locked */
    __HAL_LOCK(hspdif);
    
    hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
    hspdif->State = HAL_SPDIFRX_STATE_BUSY_RX;
    
    /* Set the SPDIFRX Rx DMA Half transfer complete callback */
    hspdif->hdmaDrRx->XferHalfCpltCallback = SPDIFRX_DMARxHalfCplt;
    
    /* Set the SPDIFRX Rx DMA transfer complete callback */
    hspdif->hdmaDrRx->XferCpltCallback = SPDIFRX_DMARxCplt;
    
    /* Set the DMA error callback */
    hspdif->hdmaDrRx->XferErrorCallback = SPDIFRX_DMAError;
       
    /* Enable the DMA request */
    HAL_DMA_Start_IT(hspdif->hdmaDrRx, (uint32_t)&hspdif->Instance->DR, (uint32_t)hspdif->pRxBuffPtr, Size);

    /* Enable RXDMAEN bit in SPDIFRX CR register for data flow reception*/
     hspdif->Instance->CR |= SPDIFRX_CR_RXDMAEN;
             
        if ((SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != SPDIFRX_STATE_SYNC || (SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != 0x00) 
        {
        /* Start synchronization */
        __HAL_SPDIFRX_SYNC(hspdif);
        
        /* Wait until SYNCD flag is set */
      if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_SYNCD, RESET, SPDIFRX_TIMEOUT_VALUE) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
            
        /* Start reception */    
      __HAL_SPDIFRX_RCV(hspdif);
        }
    
    /* Process Unlocked */
    __HAL_UNLOCK(hspdif);
     
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY; 
  }
}

/**
  * @brief Receive an amount of data (Control Flow) with DMA 
  * @param hspdif: SPDIFRX handle
  * @param pData: a 32-bit pointer to the Receive data buffer.
  * @param Size: number of data (Control Flow) sample to be received :
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SPDIFRX_ReceiveControlFlow_DMA(SPDIFRX_HandleTypeDef *hspdif, uint32_t *pData, uint16_t Size)
{
  if((pData == NULL) || (Size == 0)) 
  {
    return  HAL_ERROR;                                    
  } 
  
 if((hspdif->State == HAL_SPDIFRX_STATE_READY) || (hspdif->State == HAL_SPDIFRX_STATE_BUSY_RX))
  {    
    hspdif->pCsBuffPtr = pData;
    hspdif->CsXferSize = Size;
    hspdif->CsXferCount = Size;

    /* Process Locked */
    __HAL_LOCK(hspdif);
    
    hspdif->ErrorCode = HAL_SPDIFRX_ERROR_NONE;
    hspdif->State = HAL_SPDIFRX_STATE_BUSY_CX;
    
    /* Set the SPDIFRX Rx DMA Half transfer complete callback */
    hspdif->hdmaCsRx->XferHalfCpltCallback = SPDIFRX_DMACxHalfCplt;
    
    /* Set the SPDIFRX Rx DMA transfer complete callback */
    hspdif->hdmaCsRx->XferCpltCallback = SPDIFRX_DMACxCplt;
    
    /* Set the DMA error callback */
    hspdif->hdmaCsRx->XferErrorCallback = SPDIFRX_DMAError;
       
    /* Enable the DMA request */
    HAL_DMA_Start_IT(hspdif->hdmaCsRx, (uint32_t)&hspdif->Instance->CSR, (uint32_t)hspdif->pCsBuffPtr, Size);

    /* Enable CBDMAEN bit in SPDIFRX CR register for control flow reception*/
    hspdif->Instance->CR |= SPDIFRX_CR_CBDMAEN;
    
        if ((SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != SPDIFRX_STATE_SYNC || (SPDIFRX->CR & SPDIFRX_CR_SPDIFEN) != 0x00) 
        {
        /* Start synchronization */
        __HAL_SPDIFRX_SYNC(hspdif);
        
        /* Wait until SYNCD flag is set */
      if(SPDIFRX_WaitOnFlagUntilTimeout(hspdif, SPDIFRX_FLAG_SYNCD, RESET, SPDIFRX_TIMEOUT_VALUE) != HAL_OK)
      { 
        return HAL_TIMEOUT;
      }  
            
        /* Start reception */    
      __HAL_SPDIFRX_RCV(hspdif);
        }
        
    /* Process Unlocked */
    __HAL_UNLOCK(hspdif);
    
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY; 
  }
}

/**
  * @brief stop the audio stream receive from the Media.
  * @param hspdif: SPDIFRX handle
  * @retval None
  */
HAL_StatusTypeDef HAL_SPDIFRX_DMAStop(SPDIFRX_HandleTypeDef *hspdif)
{
  /* Process Locked */
  __HAL_LOCK(hspdif);
  
  /* Disable the SPDIFRX DMA requests */
  hspdif->Instance->CR &= (uint16_t)(~SPDIFRX_CR_RXDMAEN);
  hspdif->Instance->CR &= (uint16_t)(~SPDIFRX_CR_CBDMAEN);
  
  /* Disable the SPDIFRX DMA channel */
  __HAL_DMA_DISABLE(hspdif->hdmaDrRx);
  __HAL_DMA_DISABLE(hspdif->hdmaCsRx);
  
  /* Disable SPDIFRX peripheral */
  __HAL_SPDIFRX_IDLE(hspdif);
  
  hspdif->State = HAL_SPDIFRX_STATE_READY;
  
  /* Process Unlocked */
  __HAL_UNLOCK(hspdif);
  
  return HAL_OK;
}

/**
  * @brief  This function handles SPDIFRX interrupt request.
  * @param  hspdif: SPDIFRX handle
  * @retval HAL status
  */
void HAL_SPDIFRX_IRQHandler(SPDIFRX_HandleTypeDef *hspdif)
{  
  /* SPDIFRX in mode Data Flow Reception ------------------------------------------------*/
  if((__HAL_SPDIFRX_GET_FLAG(hspdif, SPDIFRX_FLAG_RXNE) != RESET) && (__HAL_SPDIFRX_GET_IT_SOURCE(hspdif, SPDIFRX_IT_RXNE) != RESET))
  {
      __HAL_SPDIFRX_CLEAR_IT(hspdif, SPDIFRX_IT_RXNE);
    SPDIFRX_ReceiveDataFlow_IT(hspdif);
  }
  
   /* SPDIFRX in mode Control Flow Reception ------------------------------------------------*/
  if((__HAL_SPDIFRX_GET_FLAG(hspdif, SPDIFRX_FLAG_CSRNE) != RESET) && (__HAL_SPDIFRX_GET_IT_SOURCE(hspdif, SPDIFRX_IT_CSRNE) != RESET))
  {
        __HAL_SPDIFRX_CLEAR_IT(hspdif, SPDIFRX_IT_CSRNE);
    SPDIFRX_ReceiveControlFlow_IT(hspdif);
  }
    
  /* SPDIFRX Overrun error interrupt occurred ---------------------------------*/
  if((__HAL_SPDIFRX_GET_FLAG(hspdif, SPDIFRX_FLAG_OVR) != RESET) && (__HAL_SPDIFRX_GET_IT_SOURCE(hspdif, SPDIFRX_IT_OVRIE) != RESET))
  {
    __HAL_SPDIFRX_CLEAR_IT(hspdif, SPDIFRX_FLAG_OVR);
    
        /* Change the SPDIFRX error code */
    hspdif->ErrorCode |= HAL_SPDIFRX_ERROR_OVR;
    
        /* the transfer is not stopped */
    HAL_SPDIFRX_ErrorCallback(hspdif);
  } 
    
      /* SPDIFRX Parity error interrupt occurred ---------------------------------*/
  if((__HAL_SPDIFRX_GET_FLAG(hspdif, SPDIFRX_FLAG_PERR) != RESET) && (__HAL_SPDIFRX_GET_IT_SOURCE(hspdif, SPDIFRX_IT_PERRIE) != RESET))
  {
    __HAL_SPDIFRX_CLEAR_IT(hspdif, SPDIFRX_FLAG_PERR);
    
        /* Change the SPDIFRX error code */
    hspdif->ErrorCode |= HAL_SPDIFRX_ERROR_PE;
        
        /* the transfer is not stopped */
    HAL_SPDIFRX_ErrorCallback(hspdif);
  } 
  
}

/**
  * @brief Rx Transfer (Data flow) half completed callbacks
  * @param hspdif: SPDIFRX handle
  * @retval None
  */
__weak void HAL_SPDIFRX_RxHalfCpltCallback(SPDIFRX_HandleTypeDef *hspdif)
{
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_RxCpltCallback could be implemented in the user file
  */
}

/**
  * @brief Rx Transfer (Data flow) completed callbacks
  * @param hspdif: SPDIFRX handle
  * @retval None
  */
__weak void HAL_SPDIFRX_RxCpltCallback(SPDIFRX_HandleTypeDef *hspdif)
{
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_RxCpltCallback could be implemented in the user file
  */
}

/**
  * @brief Rx (Control flow) Transfer half completed callbacks
  * @param hspdif: SPDIFRX handle
  * @retval None
  */
__weak void HAL_SPDIFRX_CxHalfCpltCallback(SPDIFRX_HandleTypeDef *hspdif)
{
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_RxCpltCallback could be implemented in the user file
  */
}

/**
  * @brief Rx Transfer (Control flow) completed callbacks
  * @param hspdif: SPDIFRX handle
  * @retval None
  */
__weak void HAL_SPDIFRX_CxCpltCallback(SPDIFRX_HandleTypeDef *hspdif)
{
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_RxCpltCallback could be implemented in the user file
  */
}

/**
  * @brief SPDIFRX error callbacks
  * @param hspdif: SPDIFRX handle
  * @retval None
  */
__weak void HAL_SPDIFRX_ErrorCallback(SPDIFRX_HandleTypeDef *hspdif)
{
  /* NOTE : This function Should not be modified, when the callback is needed,
  the HAL_SPDIFRX_ErrorCallback could be implemented in the user file
  */ 
}

/**
  * @}
  */

/** @defgroup SPDIFRX_Exported_Functions_Group3 Peripheral State and Errors functions 
  *  @brief   Peripheral State functions 
  *
@verbatim   
===============================================================================
##### Peripheral State and Errors functions #####
===============================================================================  
[..]
This subsection permit to get in run-time the status of the peripheral 
and the data flow.

@endverbatim
  * @{
  */

/**
  * @brief  Return the SPDIFRX state
  * @param  hspdif : SPDIFRX handle
  * @retval HAL state
  */
HAL_SPDIFRX_StateTypeDef HAL_SPDIFRX_GetState(SPDIFRX_HandleTypeDef *hspdif)
{
  return hspdif->State;
}

/**
  * @brief  Return the SPDIFRX error code
  * @param  hspdif : SPDIFRX handle
  * @retval SPDIFRX Error Code
  */
uint32_t HAL_SPDIFRX_GetError(SPDIFRX_HandleTypeDef *hspdif)
{
  return hspdif->ErrorCode;
}

/**
  * @}
  */  

/**
  * @brief DMA SPDIFRX receive process (Data flow) complete callback 
  * @param hdma : DMA handle
  * @retval None
  */
static void SPDIFRX_DMARxCplt(DMA_HandleTypeDef *hdma)
{
  SPDIFRX_HandleTypeDef* hspdif = ( SPDIFRX_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
  
  /* Disable Rx DMA Request */
  hspdif->Instance->CR &= (uint16_t)(~SPDIFRX_CR_RXDMAEN);
  hspdif->RxXferCount = 0;
  
  hspdif->State = HAL_SPDIFRX_STATE_READY; 
  HAL_SPDIFRX_RxCpltCallback(hspdif); 
}

/**
  * @brief DMA SPDIFRX receive process (Data flow) half complete callback 
  * @param hdma : DMA handle
  * @retval None
  */
static void SPDIFRX_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
{
  SPDIFRX_HandleTypeDef* hspdif = (SPDIFRX_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
  
  HAL_SPDIFRX_RxHalfCpltCallback(hspdif); 
}


/**
  * @brief DMA SPDIFRX receive process (Control flow) complete callback 
  * @param hdma : DMA handle
  * @retval None
  */
static void SPDIFRX_DMACxCplt(DMA_HandleTypeDef *hdma)
{
  SPDIFRX_HandleTypeDef* hspdif = ( SPDIFRX_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
  
  /* Disable Cb DMA Request */
  hspdif->Instance->CR &= (uint16_t)(~SPDIFRX_CR_CBDMAEN);
  hspdif->CsXferCount = 0;
  
  hspdif->State = HAL_SPDIFRX_STATE_READY; 
  HAL_SPDIFRX_CxCpltCallback(hspdif); 
}

/**
  * @brief DMA SPDIFRX receive process (Control flow) half complete callback 
  * @param hdma : DMA handle
  * @retval None
  */
static void SPDIFRX_DMACxHalfCplt(DMA_HandleTypeDef *hdma)
{
  SPDIFRX_HandleTypeDef* hspdif = (SPDIFRX_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
  
  HAL_SPDIFRX_CxHalfCpltCallback(hspdif); 
}

/**
  * @brief DMA SPDIFRX communication error callback 
  * @param hdma : DMA handle
  * @retval None
  */
static void SPDIFRX_DMAError(DMA_HandleTypeDef *hdma)
{
  SPDIFRX_HandleTypeDef* hspdif = ( SPDIFRX_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
  
  /* Disable Rx and Cb DMA Request */
  hspdif->Instance->CR &= (uint16_t)(~(SPDIFRX_CR_RXDMAEN | SPDIFRX_CR_CBDMAEN));
  hspdif->RxXferCount = 0;
  
  hspdif->State= HAL_SPDIFRX_STATE_READY;
  
  /* Set the error code and execute error callback*/
  hspdif->ErrorCode |= HAL_SPDIFRX_ERROR_DMA;
  HAL_SPDIFRX_ErrorCallback(hspdif);
}


/**
  * @brief Receive an amount of data (Data Flow) with Interrupt
  * @param hspdif: SPDIFRX handle
  * @retval None
  */
static void SPDIFRX_ReceiveDataFlow_IT(SPDIFRX_HandleTypeDef *hspdif)
{
    /* Receive data */
    (*hspdif->pRxBuffPtr++) = hspdif->Instance->DR;
    hspdif->RxXferCount--;

    if(hspdif->RxXferCount == 0)
    {            
      /* Disable RXNE/PE and OVR interrupts */
      __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_OVRIE | SPDIFRX_IT_PERRIE | SPDIFRX_IT_RXNE);

      hspdif->State = HAL_SPDIFRX_STATE_READY;

      /* Process Unlocked */
      __HAL_UNLOCK(hspdif);

      HAL_SPDIFRX_RxCpltCallback(hspdif);
    }
}

/**
  * @brief Receive an amount of data (Control Flow) with Interrupt
  * @param hspdif: SPDIFRX handle
  * @retval None
  */
static void SPDIFRX_ReceiveControlFlow_IT(SPDIFRX_HandleTypeDef *hspdif)
{
    /* Receive data */
    (*hspdif->pCsBuffPtr++) = hspdif->Instance->CSR;
    hspdif->CsXferCount--;

    if(hspdif->CsXferCount == 0)
    {        
      /* Disable CSRNE interrupt */
      __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_CSRNE);

       hspdif->State = HAL_SPDIFRX_STATE_READY; 

      /* Process Unlocked */
      __HAL_UNLOCK(hspdif);

      HAL_SPDIFRX_CxCpltCallback(hspdif);
    }
}

/**
  * @brief This function handles SPDIFRX Communication Timeout.
  * @param hspdif: SPDIFRX handle
  * @param Flag: Flag checked
  * @param Status: Value of the flag expected
  * @param Timeout: Duration of the timeout
  * @retval HAL status
  */
static HAL_StatusTypeDef SPDIFRX_WaitOnFlagUntilTimeout(SPDIFRX_HandleTypeDef *hspdif, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
{
  uint32_t tickstart = 0;

  /* Get tick */ 
  tickstart = HAL_GetTick();

  /* Wait until flag is set */
  if(Status == RESET)
  {
    while(__HAL_SPDIFRX_GET_FLAG(hspdif, Flag) == RESET)
    {
      /* Check for the Timeout */
      if(Timeout != HAL_MAX_DELAY)
      {
        if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
        {
          /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_RXNE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_CSRNE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_PERRIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_OVRIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_SBLKIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_SYNCDIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_IFEIE);

          hspdif->State= HAL_SPDIFRX_STATE_READY;

          /* Process Unlocked */
          __HAL_UNLOCK(hspdif);

          return HAL_TIMEOUT;
        }
      }
    }
  }
  else
  {
    while(__HAL_SPDIFRX_GET_FLAG(hspdif, Flag) != RESET)
    {
      /* Check for the Timeout */
      if(Timeout != HAL_MAX_DELAY)
      {
        if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
        {
          /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_RXNE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_CSRNE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_PERRIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_OVRIE);
                    __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_SBLKIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_SYNCDIE);
          __HAL_SPDIFRX_DISABLE_IT(hspdif, SPDIFRX_IT_IFEIE);

          hspdif->State= HAL_SPDIFRX_STATE_READY;

          /* Process Unlocked */
          __HAL_UNLOCK(hspdif);

          return HAL_TIMEOUT;
        }
      }
    }
  }
  return HAL_OK;
}

/**
  * @}
  */
#endif /* STM32F446xx */

#endif /* HAL_SPDIFRX_MODULE_ENABLED */
/**
  * @}
  */

/**
  * @}
  */

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