/**
  ******************************************************************************
  * @file    stm32f4_discovery_audio.h
  * @author  MCD Application Team
  * @brief   This file contains the common defines and functions prototypes for
  *          stm32f4_discovery_audio.c driver.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2017 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F4_DISCOVERY_AUDIO_H
#define __STM32F4_DISCOVERY_AUDIO_H

#ifdef __cplusplus
 extern "C" {
#endif 

/* Includes ------------------------------------------------------------------*/
/* Include audio component Driver */
#include "../Components/cs43l22/cs43l22.h"

#include "stm32f4_discovery.h"
#include "../../../Middlewares/ST/STM32_Audio/Addons/PDM/Inc/pdm2pcm_glo.h"

/** @addtogroup BSP
  * @{
  */

/** @addtogroup STM32F4_DISCOVERY
  * @{
  */
    
/** @addtogroup STM32F4_DISCOVERY_AUDIO
  * @{
  */    


/** @defgroup STM32F4_DISCOVERY_AUDIO_Exported_Types STM32F4 DISCOVERY AUDIO Exported Types
  * @{
  */
/**
  * @}
  */ 

/** @defgroup STM32F4_DISCOVERY_AUDIO_OUT_Exported_Constants STM32F4 DISCOVERY AUDIO OUT Exported Constants
  * @{
  */ 

/*------------------------------------------------------------------------------
                          AUDIO OUT CONFIGURATION
------------------------------------------------------------------------------*/

/* I2S peripheral configuration defines */
#define I2S3                            SPI3
#define I2S3_CLK_ENABLE()               __HAL_RCC_SPI3_CLK_ENABLE()
#define I2S3_CLK_DISABLE()              __HAL_RCC_SPI3_CLK_DISABLE()
#define I2S3_SCK_SD_WS_AF               GPIO_AF6_SPI3
#define I2S3_SCK_SD_CLK_ENABLE()        __HAL_RCC_GPIOC_CLK_ENABLE()
#define I2S3_MCK_CLK_ENABLE()           __HAL_RCC_GPIOC_CLK_ENABLE()
#define I2S3_WS_CLK_ENABLE()            __HAL_RCC_GPIOA_CLK_ENABLE()
#define I2S3_WS_PIN                     GPIO_PIN_4
#define I2S3_SCK_PIN                    GPIO_PIN_10
#define I2S3_SD_PIN                     GPIO_PIN_12
#define I2S3_MCK_PIN                    GPIO_PIN_7
#define I2S3_SCK_SD_GPIO_PORT           GPIOC
#define I2S3_WS_GPIO_PORT               GPIOA
#define I2S3_MCK_GPIO_PORT              GPIOC

/* I2S DMA Stream definitions */
#define I2S3_DMAx_CLK_ENABLE()          __HAL_RCC_DMA1_CLK_ENABLE()
#define I2S3_DMAx_CLK_DISABLE()         __HAL_RCC_DMA1_CLK_DISABLE()
#define I2S3_DMAx_STREAM                DMA1_Stream7
#define I2S3_DMAx_CHANNEL               DMA_CHANNEL_0
#define I2S3_DMAx_IRQ                   DMA1_Stream7_IRQn
#define I2S3_DMAx_PERIPH_DATA_SIZE      DMA_PDATAALIGN_HALFWORD
#define I2S3_DMAx_MEM_DATA_SIZE         DMA_MDATAALIGN_HALFWORD
#define DMA_MAX_SZE                     0xFFFF

#define I2S3_IRQHandler                 DMA1_Stream7_IRQHandler

/* Select the interrupt preemption priority and subpriority for the DMA interrupt */
#define AUDIO_OUT_IRQ_PREPRIO           0x0E   /* Select the preemption priority level(0 is the highest) */

/*------------------------------------------------------------------------------
                          AUDIO IN CONFIGURATION
------------------------------------------------------------------------------*/
/* SPI Configuration defines */
#define I2S2                            SPI2
#define I2S2_CLK_ENABLE()               __HAL_RCC_SPI2_CLK_ENABLE()
#define I2S2_CLK_DISABLE()              __HAL_RCC_SPI2_CLK_DISABLE()
#define I2S2_SCK_PIN                    GPIO_PIN_10
#define I2S2_SCK_GPIO_PORT              GPIOB
#define I2S2_SCK_GPIO_CLK_ENABLE()      __HAL_RCC_GPIOB_CLK_ENABLE()
#define I2S2_SCK_AF                     GPIO_AF5_SPI2

#define I2S2_MOSI_PIN                   GPIO_PIN_3
#define I2S2_MOSI_GPIO_PORT             GPIOC
#define I2S2_MOSI_GPIO_CLK_ENABLE()     __HAL_RCC_GPIOC_CLK_ENABLE()
#define I2S2_MOSI_AF                    GPIO_AF5_SPI2

/* I2S DMA Stream Rx definitions */
#define I2S2_DMAx_CLK_ENABLE()          __HAL_RCC_DMA1_CLK_ENABLE()
#define I2S2_DMAx_CLK_DISABLE()         __HAL_RCC_DMA1_CLK_DISABLE()
#define I2S2_DMAx_STREAM                DMA1_Stream3
#define I2S2_DMAx_CHANNEL               DMA_CHANNEL_0
#define I2S2_DMAx_IRQ                   DMA1_Stream3_IRQn
#define I2S2_DMAx_PERIPH_DATA_SIZE      DMA_PDATAALIGN_HALFWORD
#define I2S2_DMAx_MEM_DATA_SIZE         DMA_MDATAALIGN_HALFWORD
   
#define I2S2_IRQHandler                 DMA1_Stream3_IRQHandler

/* Select the interrupt preemption priority and subpriority for the IT/DMA interrupt */
#define AUDIO_IN_IRQ_PREPRIO            0x0F   /* Select the preemption priority level(0 is the highest) */

/*------------------------------------------------------------------------------
             CONFIGURATION: Audio Driver Configuration parameters
------------------------------------------------------------------------------*/

#define AUDIODATA_SIZE                  2   /* 16-bits audio data size */

/* Audio status definition */     
#define AUDIO_OK                        0
#define AUDIO_ERROR                     1
#define AUDIO_TIMEOUT                   2

/* AudioFreq * DataSize (2 bytes) * NumChannels (Stereo: 2) */
#define DEFAULT_AUDIO_IN_FREQ                 I2S_AUDIOFREQ_16K
#define DEFAULT_AUDIO_IN_BIT_RESOLUTION       16
#define DEFAULT_AUDIO_IN_CHANNEL_NBR          1 /* Mono = 1, Stereo = 2 */
#define DEFAULT_AUDIO_IN_VOLUME               64

/* PDM buffer input size */
#define INTERNAL_BUFF_SIZE                    128*DEFAULT_AUDIO_IN_FREQ/16000*DEFAULT_AUDIO_IN_CHANNEL_NBR
/* PCM buffer output size */
#define PCM_OUT_SIZE                          DEFAULT_AUDIO_IN_FREQ/1000
#define CHANNEL_DEMUX_MASK                    0x55
   
/*------------------------------------------------------------------------------
                    OPTIONAL Configuration defines parameters
------------------------------------------------------------------------------*/

/**
  * @}
  */ 

/** @defgroup STM32F4_DISCOVERY_AUDIO_Exported_Variables STM32F4 DISCOVERY AUDIO Exported Variables
  * @{
  */ 
extern __IO uint16_t AudioInVolume;
/**
  * @}
  */ 

/** @defgroup STM32F4_DISCOVERY_AUDIO_Exported_Macros STM32F4 DISCOVERY AUDIO Exported Macros
  * @{
  */
#define DMA_MAX(_X_)                (((_X_) <= DMA_MAX_SZE)? (_X_):DMA_MAX_SZE)
#define HTONS(A)  ((((uint16_t)(A) & 0xff00) >> 8) | (((uint16_t)(A) & 0x00ff) << 8))
/**
  * @}
  */

/** @defgroup STM32F4_DISCOVERY_AUDIO_OUT_Exported_Functions  STM32F4 DISCOVERY AUDIO OUT Exported Functions
  * @{
  */ 
uint8_t BSP_AUDIO_OUT_Init(uint16_t OutputDevice, uint8_t Volume, uint32_t AudioFreq);
uint8_t BSP_AUDIO_OUT_Play(uint16_t* pBuffer, uint32_t Size);
void    BSP_AUDIO_OUT_ChangeBuffer(uint16_t *pData, uint16_t Size);
uint8_t BSP_AUDIO_OUT_Pause(void);
uint8_t BSP_AUDIO_OUT_Resume(void);
uint8_t BSP_AUDIO_OUT_Stop(uint32_t Option);
uint8_t BSP_AUDIO_OUT_SetVolume(uint8_t Volume);
void    BSP_AUDIO_OUT_SetFrequency(uint32_t AudioFreq);
uint8_t BSP_AUDIO_OUT_SetMute(uint32_t Cmd);
uint8_t BSP_AUDIO_OUT_SetOutputMode(uint8_t Output);

/* User Callbacks: user has to implement these functions in his code if they are needed. */
/* This function is called when the requested data has been completely transferred. */
void    BSP_AUDIO_OUT_TransferComplete_CallBack(void);

/* This function is called when half of the requested buffer has been transferred. */
void    BSP_AUDIO_OUT_HalfTransfer_CallBack(void);

/* This function is called when an Interrupt due to transfer error on or peripheral
   error occurs. */
void    BSP_AUDIO_OUT_Error_CallBack(void);

/* These function can be modified in case the current settings (e.g. DMA stream)
   need to be changed for specific application needs */
void  BSP_AUDIO_OUT_ClockConfig(I2S_HandleTypeDef *hi2s, uint32_t AudioFreq, void *Params);
void  BSP_AUDIO_OUT_MspInit(I2S_HandleTypeDef *hi2s, void *Params);
void  BSP_AUDIO_OUT_MspDeInit(I2S_HandleTypeDef *hi2s, void *Params);

/**
  * @}
  */

/** @defgroup STM32F4_DISCOVERY_AUDIO_IN_Exported_Functions STM32F4 DISCOVERY AUDIO IN Exported Functions
  * @{
  */ 
uint8_t BSP_AUDIO_IN_Init(uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr);
uint8_t BSP_AUDIO_IN_Record(uint16_t *pData, uint32_t Size);
uint8_t BSP_AUDIO_IN_Stop(void);
uint8_t BSP_AUDIO_IN_Pause(void);
uint8_t BSP_AUDIO_IN_Resume(void);
uint8_t BSP_AUDIO_IN_SetVolume(uint8_t Volume);
uint8_t BSP_AUDIO_IN_PDMToPCM(uint16_t *PDMBuf, uint16_t *PCMBuf);
/* User Callbacks: user has to implement these functions in his code if they are needed. */
/* This function should be implemented by the user application.
   It is called into this driver when the current buffer is filled to prepare the next
   buffer pointer and its size. */
void    BSP_AUDIO_IN_TransferComplete_CallBack(void);
void    BSP_AUDIO_IN_HalfTransfer_CallBack(void);

/* This function is called when an Interrupt due to transfer error on or peripheral
   error occurs. */
void    BSP_AUDIO_IN_Error_Callback(void);

/* These function can be modified in case the current settings (e.g. DMA stream)
   need to be changed for specific application needs */
void  BSP_AUDIO_IN_ClockConfig(I2S_HandleTypeDef *hi2s, uint32_t AudioFreq, void *Params);   
void  BSP_AUDIO_IN_MspInit(I2S_HandleTypeDef *hi2s, void *Params);
void  BSP_AUDIO_IN_MspDeInit(I2S_HandleTypeDef *hi2s, void *Params);

/**
  * @}
  */  

/**
  * @}
  */ 

/**
  * @}
  */

/**
  * @}
  */

#ifdef __cplusplus
}
#endif
   
#endif /* __STM32F4_DISCOVERY_AUDIO_H */
