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BSP_DISCO_F746NG/stm32746g_discovery_audio.c@0:4e245f4bc8ac, 2019-06-07 (annotated)

Committer:: phungductung
Date:: Fri Jun 07 05:06:42 2019 +0000
Revision:: 0:4e245f4bc8ac

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User	Revision	Line number	New contents of line
phungductung	0:4e245f4bc8ac	1	/**
phungductung	0:4e245f4bc8ac	2	******************************************************************************
phungductung	0:4e245f4bc8ac	3	* @file stm32746g_discovery_audio.c
phungductung	0:4e245f4bc8ac	4	* @author MCD Application Team
phungductung	0:4e245f4bc8ac	5	* @version V1.0.0
phungductung	0:4e245f4bc8ac	6	* @date 25-June-2015
phungductung	0:4e245f4bc8ac	7	* @brief This file provides the Audio driver for the STM32746G-Discovery board.
phungductung	0:4e245f4bc8ac	8	@verbatim
phungductung	0:4e245f4bc8ac	9	How To use this driver:
phungductung	0:4e245f4bc8ac	10	-----------------------
phungductung	0:4e245f4bc8ac	11	+ This driver supports STM32F7xx devices on STM32746G-Discovery (MB1191) board.
phungductung	0:4e245f4bc8ac	12	+ Call the function BSP_AUDIO_OUT_Init(
phungductung	0:4e245f4bc8ac	13	OutputDevice: physical output mode (OUTPUT_DEVICE_SPEAKER,
phungductung	0:4e245f4bc8ac	14	OUTPUT_DEVICE_HEADPHONE or OUTPUT_DEVICE_BOTH)
phungductung	0:4e245f4bc8ac	15	Volume : Initial volume to be set (0 is min (mute), 100 is max (100%)
phungductung	0:4e245f4bc8ac	16	AudioFreq : Audio frequency in Hz (8000, 16000, 22500, 32000...)
phungductung	0:4e245f4bc8ac	17	this parameter is relative to the audio file/stream type.
phungductung	0:4e245f4bc8ac	18	)
phungductung	0:4e245f4bc8ac	19	This function configures all the hardware required for the audio application (codec, I2C, SAI,
phungductung	0:4e245f4bc8ac	20	GPIOs, DMA and interrupt if needed). This function returns AUDIO_OK if configuration is OK.
phungductung	0:4e245f4bc8ac	21	If the returned value is different from AUDIO_OK or the function is stuck then the communication with
phungductung	0:4e245f4bc8ac	22	the codec or the MFX has failed (try to un-plug the power or reset device in this case).
phungductung	0:4e245f4bc8ac	23	- OUTPUT_DEVICE_SPEAKER : only speaker will be set as output for the audio stream.
phungductung	0:4e245f4bc8ac	24	- OUTPUT_DEVICE_HEADPHONE: only headphones will be set as output for the audio stream.
phungductung	0:4e245f4bc8ac	25	- OUTPUT_DEVICE_BOTH : both Speaker and Headphone are used as outputs for the audio stream
phungductung	0:4e245f4bc8ac	26	at the same time.
phungductung	0:4e245f4bc8ac	27	Note. On STM32746G-Discovery SAI_DMA is configured in CIRCULAR mode. Due to this the application
phungductung	0:4e245f4bc8ac	28	does NOT need to call BSP_AUDIO_OUT_ChangeBuffer() to assure streaming.
phungductung	0:4e245f4bc8ac	29	+ Call the function BSP_DISCOVERY_AUDIO_OUT_Play(
phungductung	0:4e245f4bc8ac	30	pBuffer: pointer to the audio data file address
phungductung	0:4e245f4bc8ac	31	Size : size of the buffer to be sent in Bytes
phungductung	0:4e245f4bc8ac	32	)
phungductung	0:4e245f4bc8ac	33	to start playing (for the first time) from the audio file/stream.
phungductung	0:4e245f4bc8ac	34	+ Call the function BSP_AUDIO_OUT_Pause() to pause playing
phungductung	0:4e245f4bc8ac	35	+ Call the function BSP_AUDIO_OUT_Resume() to resume playing.
phungductung	0:4e245f4bc8ac	36	Note. After calling BSP_AUDIO_OUT_Pause() function for pause, only BSP_AUDIO_OUT_Resume() should be called
phungductung	0:4e245f4bc8ac	37	for resume (it is not allowed to call BSP_AUDIO_OUT_Play() in this case).
phungductung	0:4e245f4bc8ac	38	Note. This function should be called only when the audio file is played or paused (not stopped).
phungductung	0:4e245f4bc8ac	39	+ For each mode, you may need to implement the relative callback functions into your code.
phungductung	0:4e245f4bc8ac	40	The Callback functions are named AUDIO_OUT_XXX_CallBack() and only their prototypes are declared in
phungductung	0:4e245f4bc8ac	41	the stm32746g_discovery_audio.h file. (refer to the example for more details on the callbacks implementations)
phungductung	0:4e245f4bc8ac	42	+ To Stop playing, to modify the volume level, the frequency, the audio frame slot,
phungductung	0:4e245f4bc8ac	43	the device output mode the mute or the stop, use the functions: BSP_AUDIO_OUT_SetVolume(),
phungductung	0:4e245f4bc8ac	44	AUDIO_OUT_SetFrequency(), BSP_AUDIO_OUT_SetAudioFrameSlot(), BSP_AUDIO_OUT_SetOutputMode(),
phungductung	0:4e245f4bc8ac	45	BSP_AUDIO_OUT_SetMute() and BSP_AUDIO_OUT_Stop().
phungductung	0:4e245f4bc8ac	46	+ The driver API and the callback functions are at the end of the stm32746g_discovery_audio.h file.
phungductung	0:4e245f4bc8ac	47
phungductung	0:4e245f4bc8ac	48	Driver architecture:
phungductung	0:4e245f4bc8ac	49	--------------------
phungductung	0:4e245f4bc8ac	50	+ This driver provides the High Audio Layer: consists of the function API exported in the stm32746g_discovery_audio.h file
phungductung	0:4e245f4bc8ac	51	(BSP_AUDIO_OUT_Init(), BSP_AUDIO_OUT_Play() ...)
phungductung	0:4e245f4bc8ac	52	+ This driver provide also the Media Access Layer (MAL): which consists of functions allowing to access the media containing/
phungductung	0:4e245f4bc8ac	53	providing the audio file/stream. These functions are also included as local functions into
phungductung	0:4e245f4bc8ac	54	the stm32746g_discovery_audio_codec.c file (SAIx_Out_Init() and SAIx_Out_DeInit(), SAIx_In_Init() and SAIx_In_DeInit())
phungductung	0:4e245f4bc8ac	55
phungductung	0:4e245f4bc8ac	56	Known Limitations:
phungductung	0:4e245f4bc8ac	57	------------------
phungductung	0:4e245f4bc8ac	58	1- If the TDM Format used to play in parallel 2 audio Stream (the first Stream is configured in codec SLOT0 and second
phungductung	0:4e245f4bc8ac	59	Stream in SLOT1) the Pause/Resume, volume and mute feature will control the both streams.
phungductung	0:4e245f4bc8ac	60	2- Parsing of audio file is not implemented (in order to determine audio file properties: Mono/Stereo, Data size,
phungductung	0:4e245f4bc8ac	61	File size, Audio Frequency, Audio Data header size ...). The configuration is fixed for the given audio file.
phungductung	0:4e245f4bc8ac	62	3- Supports only Stereo audio streaming.
phungductung	0:4e245f4bc8ac	63	4- Supports only 16-bits audio data size.
phungductung	0:4e245f4bc8ac	64	@endverbatim
phungductung	0:4e245f4bc8ac	65	******************************************************************************
phungductung	0:4e245f4bc8ac	66	* @attention
phungductung	0:4e245f4bc8ac	67	*
phungductung	0:4e245f4bc8ac	68	* <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
phungductung	0:4e245f4bc8ac	69	*
phungductung	0:4e245f4bc8ac	70	* Redistribution and use in source and binary forms, with or without modification,
phungductung	0:4e245f4bc8ac	71	* are permitted provided that the following conditions are met:
phungductung	0:4e245f4bc8ac	72	* 1. Redistributions of source code must retain the above copyright notice,
phungductung	0:4e245f4bc8ac	73	* this list of conditions and the following disclaimer.
phungductung	0:4e245f4bc8ac	74	* 2. Redistributions in binary form must reproduce the above copyright notice,
phungductung	0:4e245f4bc8ac	75	* this list of conditions and the following disclaimer in the documentation
phungductung	0:4e245f4bc8ac	76	* and/or other materials provided with the distribution.
phungductung	0:4e245f4bc8ac	77	* 3. Neither the name of STMicroelectronics nor the names of its contributors
phungductung	0:4e245f4bc8ac	78	* may be used to endorse or promote products derived from this software
phungductung	0:4e245f4bc8ac	79	* without specific prior written permission.
phungductung	0:4e245f4bc8ac	80	*
phungductung	0:4e245f4bc8ac	81	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
phungductung	0:4e245f4bc8ac	82	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
phungductung	0:4e245f4bc8ac	83	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
phungductung	0:4e245f4bc8ac	84	* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
phungductung	0:4e245f4bc8ac	85	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
phungductung	0:4e245f4bc8ac	86	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
phungductung	0:4e245f4bc8ac	87	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
phungductung	0:4e245f4bc8ac	88	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
phungductung	0:4e245f4bc8ac	89	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
phungductung	0:4e245f4bc8ac	90	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
phungductung	0:4e245f4bc8ac	91	*
phungductung	0:4e245f4bc8ac	92	******************************************************************************
phungductung	0:4e245f4bc8ac	93	*/
phungductung	0:4e245f4bc8ac	94
phungductung	0:4e245f4bc8ac	95	/* Includes ------------------------------------------------------------------*/
phungductung	0:4e245f4bc8ac	96	#include "stm32746g_discovery_audio.h"
phungductung	0:4e245f4bc8ac	97
phungductung	0:4e245f4bc8ac	98	/** @addtogroup BSP
phungductung	0:4e245f4bc8ac	99	* @{
phungductung	0:4e245f4bc8ac	100	*/
phungductung	0:4e245f4bc8ac	101
phungductung	0:4e245f4bc8ac	102	/** @addtogroup STM32746G_DISCOVERY
phungductung	0:4e245f4bc8ac	103	* @{
phungductung	0:4e245f4bc8ac	104	*/
phungductung	0:4e245f4bc8ac	105
phungductung	0:4e245f4bc8ac	106	/** @defgroup STM32746G_DISCOVERY_AUDIO STM32746G_DISCOVERY AUDIO
phungductung	0:4e245f4bc8ac	107	* @brief This file includes the low layer driver for wm8994 Audio Codec
phungductung	0:4e245f4bc8ac	108	* available on STM32746G-Discovery board(MB1191).
phungductung	0:4e245f4bc8ac	109	* @{
phungductung	0:4e245f4bc8ac	110	*/
phungductung	0:4e245f4bc8ac	111
phungductung	0:4e245f4bc8ac	112	/** @defgroup STM32746G_DISCOVERY_AUDIO_Private_Types STM32746G_DISCOVERY AUDIO Private Types
phungductung	0:4e245f4bc8ac	113	* @{
phungductung	0:4e245f4bc8ac	114	*/
phungductung	0:4e245f4bc8ac	115	/**
phungductung	0:4e245f4bc8ac	116	* @}
phungductung	0:4e245f4bc8ac	117	*/
phungductung	0:4e245f4bc8ac	118
phungductung	0:4e245f4bc8ac	119	/** @defgroup STM32746G_DISCOVERY_AUDIO_Private_Defines STM32746G_DISCOVERY AUDIO Private Defines
phungductung	0:4e245f4bc8ac	120	* @{
phungductung	0:4e245f4bc8ac	121	*/
phungductung	0:4e245f4bc8ac	122	/**
phungductung	0:4e245f4bc8ac	123	* @}
phungductung	0:4e245f4bc8ac	124	*/
phungductung	0:4e245f4bc8ac	125
phungductung	0:4e245f4bc8ac	126	/** @defgroup STM32746G_DISCOVERY_AUDIO_Private_Macros STM32746G_DISCOVERY AUDIO Private Macros
phungductung	0:4e245f4bc8ac	127	* @{
phungductung	0:4e245f4bc8ac	128	*/
phungductung	0:4e245f4bc8ac	129	/**
phungductung	0:4e245f4bc8ac	130	* @}
phungductung	0:4e245f4bc8ac	131	*/
phungductung	0:4e245f4bc8ac	132
phungductung	0:4e245f4bc8ac	133	/** @defgroup STM32746G_DISCOVERY_AUDIO_Private_Variables STM32746G_DISCOVERY AUDIO Private Variables
phungductung	0:4e245f4bc8ac	134	* @{
phungductung	0:4e245f4bc8ac	135	*/
phungductung	0:4e245f4bc8ac	136	AUDIO_DrvTypeDef *audio_drv;
phungductung	0:4e245f4bc8ac	137	SAI_HandleTypeDef haudio_out_sai={0};
phungductung	0:4e245f4bc8ac	138	SAI_HandleTypeDef haudio_in_sai={0};
phungductung	0:4e245f4bc8ac	139	TIM_HandleTypeDef haudio_tim;
phungductung	0:4e245f4bc8ac	140
phungductung	0:4e245f4bc8ac	141	uint16_t __IO AudioInVolume = DEFAULT_AUDIO_IN_VOLUME;
phungductung	0:4e245f4bc8ac	142
phungductung	0:4e245f4bc8ac	143	/**
phungductung	0:4e245f4bc8ac	144	* @}
phungductung	0:4e245f4bc8ac	145	*/
phungductung	0:4e245f4bc8ac	146
phungductung	0:4e245f4bc8ac	147	/** @defgroup STM32746G_DISCOVERY_AUDIO_Private_Function_Prototypes STM32746G_DISCOVERY AUDIO Private Function Prototypes
phungductung	0:4e245f4bc8ac	148	* @{
phungductung	0:4e245f4bc8ac	149	*/
phungductung	0:4e245f4bc8ac	150	static void AUDIO_IN_INT_IRQHandler(void); // MBED
phungductung	0:4e245f4bc8ac	151	static void AUDIO_IN_SAIx_DMAx_IRQHandler(void); // MBED
phungductung	0:4e245f4bc8ac	152	static void AUDIO_OUT_SAIx_DMAx_IRQHandler(void); // MBED
phungductung	0:4e245f4bc8ac	153	static void SAIx_Out_Init(uint32_t AudioFreq);
phungductung	0:4e245f4bc8ac	154	static void SAIx_Out_DeInit(void);
phungductung	0:4e245f4bc8ac	155	static void SAIx_In_Init(uint32_t SaiOutMode, uint32_t SlotActive, uint32_t AudioFreq);
phungductung	0:4e245f4bc8ac	156	static void SAIx_In_DeInit(void);
phungductung	0:4e245f4bc8ac	157	/**
phungductung	0:4e245f4bc8ac	158	* @}
phungductung	0:4e245f4bc8ac	159	*/
phungductung	0:4e245f4bc8ac	160
phungductung	0:4e245f4bc8ac	161	/** @defgroup STM32746G_DISCOVERY_AUDIO_OUT_Exported_Functions STM32746G_DISCOVERY AUDIO Out Exported Functions
phungductung	0:4e245f4bc8ac	162	* @{
phungductung	0:4e245f4bc8ac	163	*/
phungductung	0:4e245f4bc8ac	164
phungductung	0:4e245f4bc8ac	165	/**
phungductung	0:4e245f4bc8ac	166	* @brief Configures the audio peripherals.
phungductung	0:4e245f4bc8ac	167	* @param OutputDevice: OUTPUT_DEVICE_SPEAKER, OUTPUT_DEVICE_HEADPHONE,
phungductung	0:4e245f4bc8ac	168	* or OUTPUT_DEVICE_BOTH.
phungductung	0:4e245f4bc8ac	169	* @param Volume: Initial volume level (from 0 (Mute) to 100 (Max))
phungductung	0:4e245f4bc8ac	170	* @param AudioFreq: Audio frequency used to play the audio stream.
phungductung	0:4e245f4bc8ac	171	* @note The I2S PLL input clock must be done in the user application.
phungductung	0:4e245f4bc8ac	172	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	173	*/
phungductung	0:4e245f4bc8ac	174	uint8_t BSP_AUDIO_OUT_Init(uint16_t OutputDevice, uint8_t Volume, uint32_t AudioFreq)
phungductung	0:4e245f4bc8ac	175	{
phungductung	0:4e245f4bc8ac	176	uint8_t ret = AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	177	uint32_t deviceid = 0x00;
phungductung	0:4e245f4bc8ac	178
phungductung	0:4e245f4bc8ac	179	/* Disable SAI */
phungductung	0:4e245f4bc8ac	180	SAIx_Out_DeInit();
phungductung	0:4e245f4bc8ac	181
phungductung	0:4e245f4bc8ac	182	/* PLL clock is set depending on the AudioFreq (44.1khz vs 48khz groups) */
phungductung	0:4e245f4bc8ac	183	BSP_AUDIO_OUT_ClockConfig(&haudio_out_sai, AudioFreq, NULL);
phungductung	0:4e245f4bc8ac	184
phungductung	0:4e245f4bc8ac	185	/* SAI data transfer preparation:
phungductung	0:4e245f4bc8ac	186	Prepare the Media to be used for the audio transfer from memory to SAI peripheral */
phungductung	0:4e245f4bc8ac	187	haudio_out_sai.Instance = AUDIO_OUT_SAIx;
phungductung	0:4e245f4bc8ac	188	if(HAL_SAI_GetState(&haudio_out_sai) == HAL_SAI_STATE_RESET)
phungductung	0:4e245f4bc8ac	189	{
phungductung	0:4e245f4bc8ac	190	/* Init the SAI MSP: this __weak function can be redefined by the application*/
phungductung	0:4e245f4bc8ac	191	BSP_AUDIO_OUT_MspInit(&haudio_out_sai, NULL);
phungductung	0:4e245f4bc8ac	192	}
phungductung	0:4e245f4bc8ac	193	SAIx_Out_Init(AudioFreq);
phungductung	0:4e245f4bc8ac	194
phungductung	0:4e245f4bc8ac	195	/* wm8994 codec initialization */
phungductung	0:4e245f4bc8ac	196	deviceid = wm8994_drv.ReadID(AUDIO_I2C_ADDRESS);
phungductung	0:4e245f4bc8ac	197
phungductung	0:4e245f4bc8ac	198	if((deviceid) == WM8994_ID)
phungductung	0:4e245f4bc8ac	199	{
phungductung	0:4e245f4bc8ac	200	/* Reset the Codec Registers */
phungductung	0:4e245f4bc8ac	201	wm8994_drv.Reset(AUDIO_I2C_ADDRESS);
phungductung	0:4e245f4bc8ac	202	/* Initialize the audio driver structure */
phungductung	0:4e245f4bc8ac	203	audio_drv = &wm8994_drv;
phungductung	0:4e245f4bc8ac	204	ret = AUDIO_OK;
phungductung	0:4e245f4bc8ac	205	}
phungductung	0:4e245f4bc8ac	206	else
phungductung	0:4e245f4bc8ac	207	{
phungductung	0:4e245f4bc8ac	208	ret = AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	209	}
phungductung	0:4e245f4bc8ac	210
phungductung	0:4e245f4bc8ac	211	if(ret == AUDIO_OK)
phungductung	0:4e245f4bc8ac	212	{
phungductung	0:4e245f4bc8ac	213	/* Initialize the codec internal registers */
phungductung	0:4e245f4bc8ac	214	audio_drv->Init(AUDIO_I2C_ADDRESS, OutputDevice, Volume, AudioFreq);
phungductung	0:4e245f4bc8ac	215	}
phungductung	0:4e245f4bc8ac	216
phungductung	0:4e245f4bc8ac	217	return ret;
phungductung	0:4e245f4bc8ac	218	}
phungductung	0:4e245f4bc8ac	219
phungductung	0:4e245f4bc8ac	220	/**
phungductung	0:4e245f4bc8ac	221	* @brief Starts playing audio stream from a data buffer for a determined size.
phungductung	0:4e245f4bc8ac	222	* @param pBuffer: Pointer to the buffer
phungductung	0:4e245f4bc8ac	223	* @param Size: Number of audio data in BYTES unit.
phungductung	0:4e245f4bc8ac	224	* In memory, first element is for left channel, second element is for right channel
phungductung	0:4e245f4bc8ac	225	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	226	*/
phungductung	0:4e245f4bc8ac	227	uint8_t BSP_AUDIO_OUT_Play(uint16_t* pBuffer, uint32_t Size)
phungductung	0:4e245f4bc8ac	228	{
phungductung	0:4e245f4bc8ac	229	/* Call the audio Codec Play function */
phungductung	0:4e245f4bc8ac	230	if(audio_drv->Play(AUDIO_I2C_ADDRESS, pBuffer, Size) != 0)
phungductung	0:4e245f4bc8ac	231	{
phungductung	0:4e245f4bc8ac	232	return AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	233	}
phungductung	0:4e245f4bc8ac	234	else
phungductung	0:4e245f4bc8ac	235	{
phungductung	0:4e245f4bc8ac	236	/* Update the Media layer and enable it for play */
phungductung	0:4e245f4bc8ac	237	HAL_SAI_Transmit_DMA(&haudio_out_sai, (uint8_t*) pBuffer, DMA_MAX(Size / AUDIODATA_SIZE));
phungductung	0:4e245f4bc8ac	238
phungductung	0:4e245f4bc8ac	239	return AUDIO_OK;
phungductung	0:4e245f4bc8ac	240	}
phungductung	0:4e245f4bc8ac	241	}
phungductung	0:4e245f4bc8ac	242
phungductung	0:4e245f4bc8ac	243	/**
phungductung	0:4e245f4bc8ac	244	* @brief Sends n-Bytes on the SAI interface.
phungductung	0:4e245f4bc8ac	245	* @param pData: pointer on data address
phungductung	0:4e245f4bc8ac	246	* @param Size: number of data to be written
phungductung	0:4e245f4bc8ac	247	* @retval None
phungductung	0:4e245f4bc8ac	248	*/
phungductung	0:4e245f4bc8ac	249	void BSP_AUDIO_OUT_ChangeBuffer(uint16_t *pData, uint16_t Size)
phungductung	0:4e245f4bc8ac	250	{
phungductung	0:4e245f4bc8ac	251	HAL_SAI_Transmit_DMA(&haudio_out_sai, (uint8_t*) pData, Size);
phungductung	0:4e245f4bc8ac	252	}
phungductung	0:4e245f4bc8ac	253
phungductung	0:4e245f4bc8ac	254	/**
phungductung	0:4e245f4bc8ac	255	* @brief This function Pauses the audio file stream. In case
phungductung	0:4e245f4bc8ac	256	* of using DMA, the DMA Pause feature is used.
phungductung	0:4e245f4bc8ac	257	* @note When calling BSP_AUDIO_OUT_Pause() function for pause, only
phungductung	0:4e245f4bc8ac	258	* BSP_AUDIO_OUT_Resume() function should be called for resume (use of BSP_AUDIO_OUT_Play()
phungductung	0:4e245f4bc8ac	259	* function for resume could lead to unexpected behaviour).
phungductung	0:4e245f4bc8ac	260	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	261	*/
phungductung	0:4e245f4bc8ac	262	uint8_t BSP_AUDIO_OUT_Pause(void)
phungductung	0:4e245f4bc8ac	263	{
phungductung	0:4e245f4bc8ac	264	/* Call the Audio Codec Pause/Resume function */
phungductung	0:4e245f4bc8ac	265	if(audio_drv->Pause(AUDIO_I2C_ADDRESS) != 0)
phungductung	0:4e245f4bc8ac	266	{
phungductung	0:4e245f4bc8ac	267	return AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	268	}
phungductung	0:4e245f4bc8ac	269	else
phungductung	0:4e245f4bc8ac	270	{
phungductung	0:4e245f4bc8ac	271	/* Call the Media layer pause function */
phungductung	0:4e245f4bc8ac	272	HAL_SAI_DMAPause(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	273
phungductung	0:4e245f4bc8ac	274	/* Return AUDIO_OK when all operations are correctly done */
phungductung	0:4e245f4bc8ac	275	return AUDIO_OK;
phungductung	0:4e245f4bc8ac	276	}
phungductung	0:4e245f4bc8ac	277	}
phungductung	0:4e245f4bc8ac	278
phungductung	0:4e245f4bc8ac	279	/**
phungductung	0:4e245f4bc8ac	280	* @brief This function Resumes the audio file stream.
phungductung	0:4e245f4bc8ac	281	* @note When calling BSP_AUDIO_OUT_Pause() function for pause, only
phungductung	0:4e245f4bc8ac	282	* BSP_AUDIO_OUT_Resume() function should be called for resume (use of BSP_AUDIO_OUT_Play()
phungductung	0:4e245f4bc8ac	283	* function for resume could lead to unexpected behaviour).
phungductung	0:4e245f4bc8ac	284	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	285	*/
phungductung	0:4e245f4bc8ac	286	uint8_t BSP_AUDIO_OUT_Resume(void)
phungductung	0:4e245f4bc8ac	287	{
phungductung	0:4e245f4bc8ac	288	/* Call the Audio Codec Pause/Resume function */
phungductung	0:4e245f4bc8ac	289	if(audio_drv->Resume(AUDIO_I2C_ADDRESS) != 0)
phungductung	0:4e245f4bc8ac	290	{
phungductung	0:4e245f4bc8ac	291	return AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	292	}
phungductung	0:4e245f4bc8ac	293	else
phungductung	0:4e245f4bc8ac	294	{
phungductung	0:4e245f4bc8ac	295	/* Call the Media layer pause/resume function */
phungductung	0:4e245f4bc8ac	296	HAL_SAI_DMAResume(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	297
phungductung	0:4e245f4bc8ac	298	/* Return AUDIO_OK when all operations are correctly done */
phungductung	0:4e245f4bc8ac	299	return AUDIO_OK;
phungductung	0:4e245f4bc8ac	300	}
phungductung	0:4e245f4bc8ac	301	}
phungductung	0:4e245f4bc8ac	302
phungductung	0:4e245f4bc8ac	303	/**
phungductung	0:4e245f4bc8ac	304	* @brief Stops audio playing and Power down the Audio Codec.
phungductung	0:4e245f4bc8ac	305	* @param Option: could be one of the following parameters
phungductung	0:4e245f4bc8ac	306	* - CODEC_PDWN_SW: for software power off (by writing registers).
phungductung	0:4e245f4bc8ac	307	* Then no need to reconfigure the Codec after power on.
phungductung	0:4e245f4bc8ac	308	* - CODEC_PDWN_HW: completely shut down the codec (physically).
phungductung	0:4e245f4bc8ac	309	* Then need to reconfigure the Codec after power on.
phungductung	0:4e245f4bc8ac	310	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	311	*/
phungductung	0:4e245f4bc8ac	312	uint8_t BSP_AUDIO_OUT_Stop(uint32_t Option)
phungductung	0:4e245f4bc8ac	313	{
phungductung	0:4e245f4bc8ac	314	/* Call the Media layer stop function */
phungductung	0:4e245f4bc8ac	315	HAL_SAI_DMAStop(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	316
phungductung	0:4e245f4bc8ac	317	/* Call Audio Codec Stop function */
phungductung	0:4e245f4bc8ac	318	if(audio_drv->Stop(AUDIO_I2C_ADDRESS, Option) != 0)
phungductung	0:4e245f4bc8ac	319	{
phungductung	0:4e245f4bc8ac	320	return AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	321	}
phungductung	0:4e245f4bc8ac	322	else
phungductung	0:4e245f4bc8ac	323	{
phungductung	0:4e245f4bc8ac	324	if(Option == CODEC_PDWN_HW)
phungductung	0:4e245f4bc8ac	325	{
phungductung	0:4e245f4bc8ac	326	/* Wait at least 100us */
phungductung	0:4e245f4bc8ac	327	HAL_Delay(1);
phungductung	0:4e245f4bc8ac	328	}
phungductung	0:4e245f4bc8ac	329	/* Return AUDIO_OK when all operations are correctly done */
phungductung	0:4e245f4bc8ac	330	return AUDIO_OK;
phungductung	0:4e245f4bc8ac	331	}
phungductung	0:4e245f4bc8ac	332	}
phungductung	0:4e245f4bc8ac	333
phungductung	0:4e245f4bc8ac	334	/**
phungductung	0:4e245f4bc8ac	335	* @brief Controls the current audio volume level.
phungductung	0:4e245f4bc8ac	336	* @param Volume: Volume level to be set in percentage from 0% to 100% (0 for
phungductung	0:4e245f4bc8ac	337	* Mute and 100 for Max volume level).
phungductung	0:4e245f4bc8ac	338	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	339	*/
phungductung	0:4e245f4bc8ac	340	uint8_t BSP_AUDIO_OUT_SetVolume(uint8_t Volume)
phungductung	0:4e245f4bc8ac	341	{
phungductung	0:4e245f4bc8ac	342	/* Call the codec volume control function with converted volume value */
phungductung	0:4e245f4bc8ac	343	if(audio_drv->SetVolume(AUDIO_I2C_ADDRESS, Volume) != 0)
phungductung	0:4e245f4bc8ac	344	{
phungductung	0:4e245f4bc8ac	345	return AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	346	}
phungductung	0:4e245f4bc8ac	347	else
phungductung	0:4e245f4bc8ac	348	{
phungductung	0:4e245f4bc8ac	349	/* Return AUDIO_OK when all operations are correctly done */
phungductung	0:4e245f4bc8ac	350	return AUDIO_OK;
phungductung	0:4e245f4bc8ac	351	}
phungductung	0:4e245f4bc8ac	352	}
phungductung	0:4e245f4bc8ac	353
phungductung	0:4e245f4bc8ac	354	/**
phungductung	0:4e245f4bc8ac	355	* @brief Enables or disables the MUTE mode by software
phungductung	0:4e245f4bc8ac	356	* @param Cmd: Could be AUDIO_MUTE_ON to mute sound or AUDIO_MUTE_OFF to
phungductung	0:4e245f4bc8ac	357	* unmute the codec and restore previous volume level.
phungductung	0:4e245f4bc8ac	358	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	359	*/
phungductung	0:4e245f4bc8ac	360	uint8_t BSP_AUDIO_OUT_SetMute(uint32_t Cmd)
phungductung	0:4e245f4bc8ac	361	{
phungductung	0:4e245f4bc8ac	362	/* Call the Codec Mute function */
phungductung	0:4e245f4bc8ac	363	if(audio_drv->SetMute(AUDIO_I2C_ADDRESS, Cmd) != 0)
phungductung	0:4e245f4bc8ac	364	{
phungductung	0:4e245f4bc8ac	365	return AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	366	}
phungductung	0:4e245f4bc8ac	367	else
phungductung	0:4e245f4bc8ac	368	{
phungductung	0:4e245f4bc8ac	369	/* Return AUDIO_OK when all operations are correctly done */
phungductung	0:4e245f4bc8ac	370	return AUDIO_OK;
phungductung	0:4e245f4bc8ac	371	}
phungductung	0:4e245f4bc8ac	372	}
phungductung	0:4e245f4bc8ac	373
phungductung	0:4e245f4bc8ac	374	/**
phungductung	0:4e245f4bc8ac	375	* @brief Switch dynamically (while audio file is played) the output target
phungductung	0:4e245f4bc8ac	376	* (speaker or headphone).
phungductung	0:4e245f4bc8ac	377	* @param Output: The audio output target: OUTPUT_DEVICE_SPEAKER,
phungductung	0:4e245f4bc8ac	378	* OUTPUT_DEVICE_HEADPHONE or OUTPUT_DEVICE_BOTH
phungductung	0:4e245f4bc8ac	379	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	380	*/
phungductung	0:4e245f4bc8ac	381	uint8_t BSP_AUDIO_OUT_SetOutputMode(uint8_t Output)
phungductung	0:4e245f4bc8ac	382	{
phungductung	0:4e245f4bc8ac	383	/* Call the Codec output device function */
phungductung	0:4e245f4bc8ac	384	if(audio_drv->SetOutputMode(AUDIO_I2C_ADDRESS, Output) != 0)
phungductung	0:4e245f4bc8ac	385	{
phungductung	0:4e245f4bc8ac	386	return AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	387	}
phungductung	0:4e245f4bc8ac	388	else
phungductung	0:4e245f4bc8ac	389	{
phungductung	0:4e245f4bc8ac	390	/* Return AUDIO_OK when all operations are correctly done */
phungductung	0:4e245f4bc8ac	391	return AUDIO_OK;
phungductung	0:4e245f4bc8ac	392	}
phungductung	0:4e245f4bc8ac	393	}
phungductung	0:4e245f4bc8ac	394
phungductung	0:4e245f4bc8ac	395	/**
phungductung	0:4e245f4bc8ac	396	* @brief Updates the audio frequency.
phungductung	0:4e245f4bc8ac	397	* @param AudioFreq: Audio frequency used to play the audio stream.
phungductung	0:4e245f4bc8ac	398	* @note This API should be called after the BSP_AUDIO_OUT_Init() to adjust the
phungductung	0:4e245f4bc8ac	399	* audio frequency.
phungductung	0:4e245f4bc8ac	400	* @retval None
phungductung	0:4e245f4bc8ac	401	*/
phungductung	0:4e245f4bc8ac	402	void BSP_AUDIO_OUT_SetFrequency(uint32_t AudioFreq)
phungductung	0:4e245f4bc8ac	403	{
phungductung	0:4e245f4bc8ac	404	/* PLL clock is set depending by the AudioFreq (44.1khz vs 48khz groups) */
phungductung	0:4e245f4bc8ac	405	BSP_AUDIO_OUT_ClockConfig(&haudio_out_sai, AudioFreq, NULL);
phungductung	0:4e245f4bc8ac	406
phungductung	0:4e245f4bc8ac	407	/* Disable SAI peripheral to allow access to SAI internal registers */
phungductung	0:4e245f4bc8ac	408	__HAL_SAI_DISABLE(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	409
phungductung	0:4e245f4bc8ac	410	/* Update the SAI audio frequency configuration */
phungductung	0:4e245f4bc8ac	411	haudio_out_sai.Init.AudioFrequency = AudioFreq;
phungductung	0:4e245f4bc8ac	412	HAL_SAI_Init(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	413
phungductung	0:4e245f4bc8ac	414	/* Enable SAI peripheral to generate MCLK */
phungductung	0:4e245f4bc8ac	415	__HAL_SAI_ENABLE(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	416	}
phungductung	0:4e245f4bc8ac	417
phungductung	0:4e245f4bc8ac	418	/**
phungductung	0:4e245f4bc8ac	419	* @brief Updates the Audio frame slot configuration.
phungductung	0:4e245f4bc8ac	420	* @param AudioFrameSlot: specifies the audio Frame slot
phungductung	0:4e245f4bc8ac	421	* This parameter can be one of the following values
phungductung	0:4e245f4bc8ac	422	* @arg CODEC_AUDIOFRAME_SLOT_0123
phungductung	0:4e245f4bc8ac	423	* @arg CODEC_AUDIOFRAME_SLOT_02
phungductung	0:4e245f4bc8ac	424	* @arg CODEC_AUDIOFRAME_SLOT_13
phungductung	0:4e245f4bc8ac	425	* @note This API should be called after the BSP_AUDIO_OUT_Init() to adjust the
phungductung	0:4e245f4bc8ac	426	* audio frame slot.
phungductung	0:4e245f4bc8ac	427	* @retval None
phungductung	0:4e245f4bc8ac	428	*/
phungductung	0:4e245f4bc8ac	429	void BSP_AUDIO_OUT_SetAudioFrameSlot(uint32_t AudioFrameSlot)
phungductung	0:4e245f4bc8ac	430	{
phungductung	0:4e245f4bc8ac	431	/* Disable SAI peripheral to allow access to SAI internal registers */
phungductung	0:4e245f4bc8ac	432	__HAL_SAI_DISABLE(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	433
phungductung	0:4e245f4bc8ac	434	/* Update the SAI audio frame slot configuration */
phungductung	0:4e245f4bc8ac	435	haudio_out_sai.SlotInit.SlotActive = AudioFrameSlot;
phungductung	0:4e245f4bc8ac	436	HAL_SAI_Init(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	437
phungductung	0:4e245f4bc8ac	438	/* Enable SAI peripheral to generate MCLK */
phungductung	0:4e245f4bc8ac	439	__HAL_SAI_ENABLE(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	440	}
phungductung	0:4e245f4bc8ac	441
phungductung	0:4e245f4bc8ac	442	/**
phungductung	0:4e245f4bc8ac	443	* @brief Deinit the audio peripherals.
phungductung	0:4e245f4bc8ac	444	* @retval None
phungductung	0:4e245f4bc8ac	445	*/
phungductung	0:4e245f4bc8ac	446	void BSP_AUDIO_OUT_DeInit(void)
phungductung	0:4e245f4bc8ac	447	{
phungductung	0:4e245f4bc8ac	448	SAIx_Out_DeInit();
phungductung	0:4e245f4bc8ac	449	/* DeInit the SAI MSP : this __weak function can be rewritten by the application */
phungductung	0:4e245f4bc8ac	450	BSP_AUDIO_OUT_MspDeInit(&haudio_out_sai, NULL);
phungductung	0:4e245f4bc8ac	451	}
phungductung	0:4e245f4bc8ac	452
phungductung	0:4e245f4bc8ac	453	/**
phungductung	0:4e245f4bc8ac	454	* @brief Tx Transfer completed callbacks.
phungductung	0:4e245f4bc8ac	455	* @param hsai: SAI handle
phungductung	0:4e245f4bc8ac	456	* @retval None
phungductung	0:4e245f4bc8ac	457	*/
phungductung	0:4e245f4bc8ac	458	void HAL_SAI_TxCpltCallback(SAI_HandleTypeDef *hsai)
phungductung	0:4e245f4bc8ac	459	{
phungductung	0:4e245f4bc8ac	460	/* Manage the remaining file size and new address offset: This function
phungductung	0:4e245f4bc8ac	461	should be coded by user (its prototype is already declared in stm32746g_discovery_audio.h) */
phungductung	0:4e245f4bc8ac	462	BSP_AUDIO_OUT_TransferComplete_CallBack();
phungductung	0:4e245f4bc8ac	463	}
phungductung	0:4e245f4bc8ac	464
phungductung	0:4e245f4bc8ac	465	/**
phungductung	0:4e245f4bc8ac	466	* @brief Tx Half Transfer completed callbacks.
phungductung	0:4e245f4bc8ac	467	* @param hsai: SAI handle
phungductung	0:4e245f4bc8ac	468	* @retval None
phungductung	0:4e245f4bc8ac	469	*/
phungductung	0:4e245f4bc8ac	470	void HAL_SAI_TxHalfCpltCallback(SAI_HandleTypeDef *hsai)
phungductung	0:4e245f4bc8ac	471	{
phungductung	0:4e245f4bc8ac	472	/* Manage the remaining file size and new address offset: This function
phungductung	0:4e245f4bc8ac	473	should be coded by user (its prototype is already declared in stm32746g_discovery_audio.h) */
phungductung	0:4e245f4bc8ac	474	BSP_AUDIO_OUT_HalfTransfer_CallBack();
phungductung	0:4e245f4bc8ac	475	}
phungductung	0:4e245f4bc8ac	476
phungductung	0:4e245f4bc8ac	477	/**
phungductung	0:4e245f4bc8ac	478	* @brief SAI error callbacks.
phungductung	0:4e245f4bc8ac	479	* @param hsai: SAI handle
phungductung	0:4e245f4bc8ac	480	* @retval None
phungductung	0:4e245f4bc8ac	481	*/
phungductung	0:4e245f4bc8ac	482	void HAL_SAI_ErrorCallback(SAI_HandleTypeDef *hsai)
phungductung	0:4e245f4bc8ac	483	{
phungductung	0:4e245f4bc8ac	484	HAL_SAI_StateTypeDef audio_out_state;
phungductung	0:4e245f4bc8ac	485	HAL_SAI_StateTypeDef audio_in_state;
phungductung	0:4e245f4bc8ac	486
phungductung	0:4e245f4bc8ac	487	audio_out_state = HAL_SAI_GetState(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	488	audio_in_state = HAL_SAI_GetState(&haudio_in_sai);
phungductung	0:4e245f4bc8ac	489
phungductung	0:4e245f4bc8ac	490	/* Determines if it is an audio out or audio in error */
phungductung	0:4e245f4bc8ac	491	if ((audio_out_state == HAL_SAI_STATE_BUSY) \|\| (audio_out_state == HAL_SAI_STATE_BUSY_TX))
phungductung	0:4e245f4bc8ac	492	// \|\| (audio_out_state == HAL_SAI_STATE_TIMEOUT) \|\| (audio_out_state == HAL_SAI_STATE_ERROR)) // Removed in STM32746G-Discovery BSP Driver V1.1.1
phungductung	0:4e245f4bc8ac	493	{
phungductung	0:4e245f4bc8ac	494	BSP_AUDIO_OUT_Error_CallBack();
phungductung	0:4e245f4bc8ac	495	}
phungductung	0:4e245f4bc8ac	496
phungductung	0:4e245f4bc8ac	497	if ((audio_in_state == HAL_SAI_STATE_BUSY) \|\| (audio_in_state == HAL_SAI_STATE_BUSY_RX))
phungductung	0:4e245f4bc8ac	498	// \|\| (audio_in_state == HAL_SAI_STATE_TIMEOUT) \|\| (audio_in_state == HAL_SAI_STATE_ERROR)) // Removed in STM32746G-Discovery BSP Driver V1.1.1
phungductung	0:4e245f4bc8ac	499	{
phungductung	0:4e245f4bc8ac	500	BSP_AUDIO_IN_Error_CallBack();
phungductung	0:4e245f4bc8ac	501	}
phungductung	0:4e245f4bc8ac	502	}
phungductung	0:4e245f4bc8ac	503
phungductung	0:4e245f4bc8ac	504	/**
phungductung	0:4e245f4bc8ac	505	* @brief Manages the DMA full Transfer complete event.
phungductung	0:4e245f4bc8ac	506	* @retval None
phungductung	0:4e245f4bc8ac	507	*/
phungductung	0:4e245f4bc8ac	508	__weak void BSP_AUDIO_OUT_TransferComplete_CallBack(void)
phungductung	0:4e245f4bc8ac	509	{
phungductung	0:4e245f4bc8ac	510	}
phungductung	0:4e245f4bc8ac	511
phungductung	0:4e245f4bc8ac	512	/**
phungductung	0:4e245f4bc8ac	513	* @brief Manages the DMA Half Transfer complete event.
phungductung	0:4e245f4bc8ac	514	* @retval None
phungductung	0:4e245f4bc8ac	515	*/
phungductung	0:4e245f4bc8ac	516	__weak void BSP_AUDIO_OUT_HalfTransfer_CallBack(void)
phungductung	0:4e245f4bc8ac	517	{
phungductung	0:4e245f4bc8ac	518	}
phungductung	0:4e245f4bc8ac	519
phungductung	0:4e245f4bc8ac	520	/**
phungductung	0:4e245f4bc8ac	521	* @brief Manages the DMA FIFO error event.
phungductung	0:4e245f4bc8ac	522	* @retval None
phungductung	0:4e245f4bc8ac	523	*/
phungductung	0:4e245f4bc8ac	524	__weak void BSP_AUDIO_OUT_Error_CallBack(void)
phungductung	0:4e245f4bc8ac	525	{
phungductung	0:4e245f4bc8ac	526	}
phungductung	0:4e245f4bc8ac	527
phungductung	0:4e245f4bc8ac	528	/**
phungductung	0:4e245f4bc8ac	529	* @brief Initializes BSP_AUDIO_OUT MSP.
phungductung	0:4e245f4bc8ac	530	* @param hsai: SAI handle
phungductung	0:4e245f4bc8ac	531	* @param Params
phungductung	0:4e245f4bc8ac	532	* @retval None
phungductung	0:4e245f4bc8ac	533	*/
phungductung	0:4e245f4bc8ac	534	__weak void BSP_AUDIO_OUT_MspInit(SAI_HandleTypeDef hsai, void Params)
phungductung	0:4e245f4bc8ac	535	{
phungductung	0:4e245f4bc8ac	536	static DMA_HandleTypeDef hdma_sai_tx;
phungductung	0:4e245f4bc8ac	537	GPIO_InitTypeDef gpio_init_structure;
phungductung	0:4e245f4bc8ac	538
phungductung	0:4e245f4bc8ac	539	/* Enable SAI clock */
phungductung	0:4e245f4bc8ac	540	AUDIO_OUT_SAIx_CLK_ENABLE();
phungductung	0:4e245f4bc8ac	541
phungductung	0:4e245f4bc8ac	542	/* Enable GPIO clock */
phungductung	0:4e245f4bc8ac	543	AUDIO_OUT_SAIx_MCLK_ENABLE();
phungductung	0:4e245f4bc8ac	544	AUDIO_OUT_SAIx_SCK_SD_ENABLE();
phungductung	0:4e245f4bc8ac	545	AUDIO_OUT_SAIx_FS_ENABLE();
phungductung	0:4e245f4bc8ac	546	/* CODEC_SAI pins configuration: FS, SCK, MCK and SD pins ------------------*/
phungductung	0:4e245f4bc8ac	547	gpio_init_structure.Pin = AUDIO_OUT_SAIx_FS_PIN;
phungductung	0:4e245f4bc8ac	548	gpio_init_structure.Mode = GPIO_MODE_AF_PP;
phungductung	0:4e245f4bc8ac	549	gpio_init_structure.Pull = GPIO_NOPULL;
phungductung	0:4e245f4bc8ac	550	gpio_init_structure.Speed = GPIO_SPEED_HIGH;
phungductung	0:4e245f4bc8ac	551	gpio_init_structure.Alternate = AUDIO_OUT_SAIx_FS_SD_MCLK_AF;
phungductung	0:4e245f4bc8ac	552	HAL_GPIO_Init(AUDIO_OUT_SAIx_FS_GPIO_PORT, &gpio_init_structure);
phungductung	0:4e245f4bc8ac	553
phungductung	0:4e245f4bc8ac	554	gpio_init_structure.Pin = AUDIO_OUT_SAIx_SCK_PIN;
phungductung	0:4e245f4bc8ac	555	gpio_init_structure.Mode = GPIO_MODE_AF_PP;
phungductung	0:4e245f4bc8ac	556	gpio_init_structure.Pull = GPIO_NOPULL;
phungductung	0:4e245f4bc8ac	557	gpio_init_structure.Speed = GPIO_SPEED_HIGH;
phungductung	0:4e245f4bc8ac	558	gpio_init_structure.Alternate = AUDIO_OUT_SAIx_SCK_AF;
phungductung	0:4e245f4bc8ac	559	HAL_GPIO_Init(AUDIO_OUT_SAIx_SCK_SD_GPIO_PORT, &gpio_init_structure);
phungductung	0:4e245f4bc8ac	560
phungductung	0:4e245f4bc8ac	561	gpio_init_structure.Pin = AUDIO_OUT_SAIx_SD_PIN;
phungductung	0:4e245f4bc8ac	562	gpio_init_structure.Mode = GPIO_MODE_AF_PP;
phungductung	0:4e245f4bc8ac	563	gpio_init_structure.Pull = GPIO_NOPULL;
phungductung	0:4e245f4bc8ac	564	gpio_init_structure.Speed = GPIO_SPEED_HIGH;
phungductung	0:4e245f4bc8ac	565	gpio_init_structure.Alternate = AUDIO_OUT_SAIx_FS_SD_MCLK_AF;
phungductung	0:4e245f4bc8ac	566	HAL_GPIO_Init(AUDIO_OUT_SAIx_SCK_SD_GPIO_PORT, &gpio_init_structure);
phungductung	0:4e245f4bc8ac	567
phungductung	0:4e245f4bc8ac	568	gpio_init_structure.Pin = AUDIO_OUT_SAIx_MCLK_PIN;
phungductung	0:4e245f4bc8ac	569	gpio_init_structure.Mode = GPIO_MODE_AF_PP;
phungductung	0:4e245f4bc8ac	570	gpio_init_structure.Pull = GPIO_NOPULL;
phungductung	0:4e245f4bc8ac	571	gpio_init_structure.Speed = GPIO_SPEED_HIGH;
phungductung	0:4e245f4bc8ac	572	gpio_init_structure.Alternate = AUDIO_OUT_SAIx_FS_SD_MCLK_AF;
phungductung	0:4e245f4bc8ac	573	HAL_GPIO_Init(AUDIO_OUT_SAIx_MCLK_GPIO_PORT, &gpio_init_structure);
phungductung	0:4e245f4bc8ac	574
phungductung	0:4e245f4bc8ac	575	/* Enable the DMA clock */
phungductung	0:4e245f4bc8ac	576	AUDIO_OUT_SAIx_DMAx_CLK_ENABLE();
phungductung	0:4e245f4bc8ac	577
phungductung	0:4e245f4bc8ac	578	if(hsai->Instance == AUDIO_OUT_SAIx)
phungductung	0:4e245f4bc8ac	579	{
phungductung	0:4e245f4bc8ac	580	/* Configure the hdma_saiTx handle parameters */
phungductung	0:4e245f4bc8ac	581	hdma_sai_tx.Init.Channel = AUDIO_OUT_SAIx_DMAx_CHANNEL;
phungductung	0:4e245f4bc8ac	582	hdma_sai_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
phungductung	0:4e245f4bc8ac	583	hdma_sai_tx.Init.PeriphInc = DMA_PINC_DISABLE;
phungductung	0:4e245f4bc8ac	584	hdma_sai_tx.Init.MemInc = DMA_MINC_ENABLE;
phungductung	0:4e245f4bc8ac	585	hdma_sai_tx.Init.PeriphDataAlignment = AUDIO_OUT_SAIx_DMAx_PERIPH_DATA_SIZE;
phungductung	0:4e245f4bc8ac	586	hdma_sai_tx.Init.MemDataAlignment = AUDIO_OUT_SAIx_DMAx_MEM_DATA_SIZE;
phungductung	0:4e245f4bc8ac	587	hdma_sai_tx.Init.Mode = DMA_CIRCULAR;
phungductung	0:4e245f4bc8ac	588	hdma_sai_tx.Init.Priority = DMA_PRIORITY_HIGH;
phungductung	0:4e245f4bc8ac	589	hdma_sai_tx.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
phungductung	0:4e245f4bc8ac	590	hdma_sai_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
phungductung	0:4e245f4bc8ac	591	hdma_sai_tx.Init.MemBurst = DMA_MBURST_SINGLE;
phungductung	0:4e245f4bc8ac	592	hdma_sai_tx.Init.PeriphBurst = DMA_PBURST_SINGLE;
phungductung	0:4e245f4bc8ac	593
phungductung	0:4e245f4bc8ac	594	hdma_sai_tx.Instance = AUDIO_OUT_SAIx_DMAx_STREAM;
phungductung	0:4e245f4bc8ac	595
phungductung	0:4e245f4bc8ac	596	/* Associate the DMA handle */
phungductung	0:4e245f4bc8ac	597	__HAL_LINKDMA(hsai, hdmatx, hdma_sai_tx);
phungductung	0:4e245f4bc8ac	598
phungductung	0:4e245f4bc8ac	599	/* Deinitialize the Stream for new transfer */
phungductung	0:4e245f4bc8ac	600	HAL_DMA_DeInit(&hdma_sai_tx);
phungductung	0:4e245f4bc8ac	601
phungductung	0:4e245f4bc8ac	602	/* Configure the DMA Stream */
phungductung	0:4e245f4bc8ac	603	HAL_DMA_Init(&hdma_sai_tx);
phungductung	0:4e245f4bc8ac	604	}
phungductung	0:4e245f4bc8ac	605	#if ( __MBED__ == 1)
phungductung	0:4e245f4bc8ac	606	// Enable interrupt
phungductung	0:4e245f4bc8ac	607	IRQn_Type irqn = (IRQn_Type)(AUDIO_OUT_SAIx_DMAx_IRQ);
phungductung	0:4e245f4bc8ac	608	NVIC_ClearPendingIRQ(irqn);
phungductung	0:4e245f4bc8ac	609	NVIC_DisableIRQ(irqn);
phungductung	0:4e245f4bc8ac	610	NVIC_SetPriority(irqn, AUDIO_OUT_IRQ_PREPRIO);
phungductung	0:4e245f4bc8ac	611	NVIC_SetVector(irqn, (uint32_t)AUDIO_OUT_SAIx_DMAx_IRQHandler);
phungductung	0:4e245f4bc8ac	612	NVIC_EnableIRQ(irqn);
phungductung	0:4e245f4bc8ac	613
phungductung	0:4e245f4bc8ac	614	#else
phungductung	0:4e245f4bc8ac	615	/* SAI DMA IRQ Channel configuration */
phungductung	0:4e245f4bc8ac	616	HAL_NVIC_SetPriority(AUDIO_OUT_SAIx_DMAx_IRQ, AUDIO_OUT_IRQ_PREPRIO, 0);
phungductung	0:4e245f4bc8ac	617	HAL_NVIC_EnableIRQ(AUDIO_OUT_SAIx_DMAx_IRQ);
phungductung	0:4e245f4bc8ac	618	#endif
phungductung	0:4e245f4bc8ac	619	}
phungductung	0:4e245f4bc8ac	620
phungductung	0:4e245f4bc8ac	621	/**
phungductung	0:4e245f4bc8ac	622	* @brief Deinitializes SAI MSP.
phungductung	0:4e245f4bc8ac	623	* @param hsai: SAI handle
phungductung	0:4e245f4bc8ac	624	* @param Params
phungductung	0:4e245f4bc8ac	625	* @retval None
phungductung	0:4e245f4bc8ac	626	*/
phungductung	0:4e245f4bc8ac	627	__weak void BSP_AUDIO_OUT_MspDeInit(SAI_HandleTypeDef hsai, void Params)
phungductung	0:4e245f4bc8ac	628	{
phungductung	0:4e245f4bc8ac	629	GPIO_InitTypeDef gpio_init_structure;
phungductung	0:4e245f4bc8ac	630
phungductung	0:4e245f4bc8ac	631	/* SAI DMA IRQ Channel deactivation */
phungductung	0:4e245f4bc8ac	632	HAL_NVIC_DisableIRQ(AUDIO_OUT_SAIx_DMAx_IRQ);
phungductung	0:4e245f4bc8ac	633
phungductung	0:4e245f4bc8ac	634	if(hsai->Instance == AUDIO_OUT_SAIx)
phungductung	0:4e245f4bc8ac	635	{
phungductung	0:4e245f4bc8ac	636	/* Deinitialize the DMA stream */
phungductung	0:4e245f4bc8ac	637	HAL_DMA_DeInit(hsai->hdmatx);
phungductung	0:4e245f4bc8ac	638	}
phungductung	0:4e245f4bc8ac	639
phungductung	0:4e245f4bc8ac	640	/* Disable SAI peripheral */
phungductung	0:4e245f4bc8ac	641	__HAL_SAI_DISABLE(hsai);
phungductung	0:4e245f4bc8ac	642
phungductung	0:4e245f4bc8ac	643	/* Deactives CODEC_SAI pins FS, SCK, MCK and SD by putting them in input mode */
phungductung	0:4e245f4bc8ac	644	gpio_init_structure.Pin = AUDIO_OUT_SAIx_FS_PIN;
phungductung	0:4e245f4bc8ac	645	HAL_GPIO_DeInit(AUDIO_OUT_SAIx_FS_GPIO_PORT, gpio_init_structure.Pin);
phungductung	0:4e245f4bc8ac	646
phungductung	0:4e245f4bc8ac	647	gpio_init_structure.Pin = AUDIO_OUT_SAIx_SCK_PIN;
phungductung	0:4e245f4bc8ac	648	HAL_GPIO_DeInit(AUDIO_OUT_SAIx_SCK_SD_GPIO_PORT, gpio_init_structure.Pin);
phungductung	0:4e245f4bc8ac	649
phungductung	0:4e245f4bc8ac	650	gpio_init_structure.Pin = AUDIO_OUT_SAIx_SD_PIN;
phungductung	0:4e245f4bc8ac	651	HAL_GPIO_DeInit(AUDIO_OUT_SAIx_SCK_SD_GPIO_PORT, gpio_init_structure.Pin);
phungductung	0:4e245f4bc8ac	652
phungductung	0:4e245f4bc8ac	653	gpio_init_structure.Pin = AUDIO_OUT_SAIx_MCLK_PIN;
phungductung	0:4e245f4bc8ac	654	HAL_GPIO_DeInit(AUDIO_OUT_SAIx_MCLK_GPIO_PORT, gpio_init_structure.Pin);
phungductung	0:4e245f4bc8ac	655
phungductung	0:4e245f4bc8ac	656	/* Disable SAI clock */
phungductung	0:4e245f4bc8ac	657	AUDIO_OUT_SAIx_CLK_DISABLE();
phungductung	0:4e245f4bc8ac	658
phungductung	0:4e245f4bc8ac	659	/* GPIO pins clock and DMA clock can be shut down in the application
phungductung	0:4e245f4bc8ac	660	by surcharging this __weak function */
phungductung	0:4e245f4bc8ac	661	}
phungductung	0:4e245f4bc8ac	662
phungductung	0:4e245f4bc8ac	663	/**
phungductung	0:4e245f4bc8ac	664	* @brief Clock Config.
phungductung	0:4e245f4bc8ac	665	* @param hsai: might be required to set audio peripheral predivider if any.
phungductung	0:4e245f4bc8ac	666	* @param AudioFreq: Audio frequency used to play the audio stream.
phungductung	0:4e245f4bc8ac	667	* @param Params
phungductung	0:4e245f4bc8ac	668	* @note This API is called by BSP_AUDIO_OUT_Init() and BSP_AUDIO_OUT_SetFrequency()
phungductung	0:4e245f4bc8ac	669	* Being __weak it can be overwritten by the application
phungductung	0:4e245f4bc8ac	670	* @retval None
phungductung	0:4e245f4bc8ac	671	*/
phungductung	0:4e245f4bc8ac	672	__weak void BSP_AUDIO_OUT_ClockConfig(SAI_HandleTypeDef hsai, uint32_t AudioFreq, void Params)
phungductung	0:4e245f4bc8ac	673	{
phungductung	0:4e245f4bc8ac	674	RCC_PeriphCLKInitTypeDef rcc_ex_clk_init_struct;
phungductung	0:4e245f4bc8ac	675
phungductung	0:4e245f4bc8ac	676	HAL_RCCEx_GetPeriphCLKConfig(&rcc_ex_clk_init_struct);
phungductung	0:4e245f4bc8ac	677
phungductung	0:4e245f4bc8ac	678	/* Set the PLL configuration according to the audio frequency */
phungductung	0:4e245f4bc8ac	679	if((AudioFreq == AUDIO_FREQUENCY_11K) \|\| (AudioFreq == AUDIO_FREQUENCY_22K) \|\| (AudioFreq == AUDIO_FREQUENCY_44K))
phungductung	0:4e245f4bc8ac	680	{
phungductung	0:4e245f4bc8ac	681	/* Configure PLLI2S prescalers */
phungductung	0:4e245f4bc8ac	682	/* PLLI2S_VCO: VCO_429M
phungductung	0:4e245f4bc8ac	683	I2S_CLK(first level) = PLLI2S_VCO/PLLI2SQ = 429/2 = 214.5 Mhz
phungductung	0:4e245f4bc8ac	684	I2S_CLK_x = I2S_CLK(first level)/PLLI2SDIVQ = 214.5/19 = 11.289 Mhz */
phungductung	0:4e245f4bc8ac	685	rcc_ex_clk_init_struct.PeriphClockSelection = RCC_PERIPHCLK_SAI2;
phungductung	0:4e245f4bc8ac	686	rcc_ex_clk_init_struct.Sai2ClockSelection = RCC_SAI2CLKSOURCE_PLLI2S;
phungductung	0:4e245f4bc8ac	687	rcc_ex_clk_init_struct.PLLI2S.PLLI2SN = 429;
phungductung	0:4e245f4bc8ac	688	rcc_ex_clk_init_struct.PLLI2S.PLLI2SQ = 2;
phungductung	0:4e245f4bc8ac	689	rcc_ex_clk_init_struct.PLLI2SDivQ = 19;
phungductung	0:4e245f4bc8ac	690
phungductung	0:4e245f4bc8ac	691	HAL_RCCEx_PeriphCLKConfig(&rcc_ex_clk_init_struct);
phungductung	0:4e245f4bc8ac	692
phungductung	0:4e245f4bc8ac	693	}
phungductung	0:4e245f4bc8ac	694	else /* AUDIO_FREQUENCY_8K, AUDIO_FREQUENCY_16K, AUDIO_FREQUENCY_48K), AUDIO_FREQUENCY_96K */
phungductung	0:4e245f4bc8ac	695	{
phungductung	0:4e245f4bc8ac	696	/* I2S clock config
phungductung	0:4e245f4bc8ac	697	PLLI2S_VCO: VCO_344M
phungductung	0:4e245f4bc8ac	698	I2S_CLK(first level) = PLLI2S_VCO/PLLI2SQ = 344/7 = 49.142 Mhz
phungductung	0:4e245f4bc8ac	699	I2S_CLK_x = I2S_CLK(first level)/PLLI2SDIVQ = 49.142/1 = 49.142 Mhz */
phungductung	0:4e245f4bc8ac	700	rcc_ex_clk_init_struct.PeriphClockSelection = RCC_PERIPHCLK_SAI2;
phungductung	0:4e245f4bc8ac	701	rcc_ex_clk_init_struct.Sai2ClockSelection = RCC_SAI2CLKSOURCE_PLLI2S;
phungductung	0:4e245f4bc8ac	702	rcc_ex_clk_init_struct.PLLI2S.PLLI2SN = 344;
phungductung	0:4e245f4bc8ac	703	rcc_ex_clk_init_struct.PLLI2S.PLLI2SQ = 7;
phungductung	0:4e245f4bc8ac	704	rcc_ex_clk_init_struct.PLLI2SDivQ = 1;
phungductung	0:4e245f4bc8ac	705
phungductung	0:4e245f4bc8ac	706	HAL_RCCEx_PeriphCLKConfig(&rcc_ex_clk_init_struct);
phungductung	0:4e245f4bc8ac	707	}
phungductung	0:4e245f4bc8ac	708	}
phungductung	0:4e245f4bc8ac	709
phungductung	0:4e245f4bc8ac	710	/*******************************************************************************
phungductung	0:4e245f4bc8ac	711	Static Functions
phungductung	0:4e245f4bc8ac	712	*******************************************************************************/
phungductung	0:4e245f4bc8ac	713
phungductung	0:4e245f4bc8ac	714	/**
phungductung	0:4e245f4bc8ac	715	* @brief Initializes the output Audio Codec audio interface (SAI).
phungductung	0:4e245f4bc8ac	716	* @param AudioFreq: Audio frequency to be configured for the SAI peripheral.
phungductung	0:4e245f4bc8ac	717	* @note The default SlotActive configuration is set to CODEC_AUDIOFRAME_SLOT_0123
phungductung	0:4e245f4bc8ac	718	* and user can update this configuration using
phungductung	0:4e245f4bc8ac	719	* @retval None
phungductung	0:4e245f4bc8ac	720	*/
phungductung	0:4e245f4bc8ac	721	static void SAIx_Out_Init(uint32_t AudioFreq)
phungductung	0:4e245f4bc8ac	722	{
phungductung	0:4e245f4bc8ac	723	/* Initialize the haudio_out_sai Instance parameter */
phungductung	0:4e245f4bc8ac	724	haudio_out_sai.Instance = AUDIO_OUT_SAIx;
phungductung	0:4e245f4bc8ac	725
phungductung	0:4e245f4bc8ac	726	/* Disable SAI peripheral to allow access to SAI internal registers */
phungductung	0:4e245f4bc8ac	727	__HAL_SAI_DISABLE(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	728
phungductung	0:4e245f4bc8ac	729	/* Configure SAI_Block_x
phungductung	0:4e245f4bc8ac	730	LSBFirst: Disabled
phungductung	0:4e245f4bc8ac	731	DataSize: 16 */
phungductung	0:4e245f4bc8ac	732	haudio_out_sai.Init.AudioFrequency = AudioFreq;
phungductung	0:4e245f4bc8ac	733	haudio_out_sai.Init.AudioMode = SAI_MODEMASTER_TX;
phungductung	0:4e245f4bc8ac	734	haudio_out_sai.Init.NoDivider = SAI_MASTERDIVIDER_ENABLED;
phungductung	0:4e245f4bc8ac	735	haudio_out_sai.Init.Protocol = SAI_FREE_PROTOCOL;
phungductung	0:4e245f4bc8ac	736	haudio_out_sai.Init.DataSize = SAI_DATASIZE_16;
phungductung	0:4e245f4bc8ac	737	haudio_out_sai.Init.FirstBit = SAI_FIRSTBIT_MSB;
phungductung	0:4e245f4bc8ac	738	haudio_out_sai.Init.ClockStrobing = SAI_CLOCKSTROBING_RISINGEDGE;
phungductung	0:4e245f4bc8ac	739	haudio_out_sai.Init.Synchro = SAI_ASYNCHRONOUS;
phungductung	0:4e245f4bc8ac	740	haudio_out_sai.Init.OutputDrive = SAI_OUTPUTDRIVE_ENABLED;
phungductung	0:4e245f4bc8ac	741	haudio_out_sai.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_1QF;
phungductung	0:4e245f4bc8ac	742
phungductung	0:4e245f4bc8ac	743	/* Configure SAI_Block_x Frame
phungductung	0:4e245f4bc8ac	744	Frame Length: 64
phungductung	0:4e245f4bc8ac	745	Frame active Length: 32
phungductung	0:4e245f4bc8ac	746	FS Definition: Start frame + Channel Side identification
phungductung	0:4e245f4bc8ac	747	FS Polarity: FS active Low
phungductung	0:4e245f4bc8ac	748	FS Offset: FS asserted one bit before the first bit of slot 0 */
phungductung	0:4e245f4bc8ac	749	haudio_out_sai.FrameInit.FrameLength = 64;
phungductung	0:4e245f4bc8ac	750	haudio_out_sai.FrameInit.ActiveFrameLength = 32;
phungductung	0:4e245f4bc8ac	751	haudio_out_sai.FrameInit.FSDefinition = SAI_FS_CHANNEL_IDENTIFICATION;
phungductung	0:4e245f4bc8ac	752	haudio_out_sai.FrameInit.FSPolarity = SAI_FS_ACTIVE_LOW;
phungductung	0:4e245f4bc8ac	753	haudio_out_sai.FrameInit.FSOffset = SAI_FS_BEFOREFIRSTBIT;
phungductung	0:4e245f4bc8ac	754
phungductung	0:4e245f4bc8ac	755	/* Configure SAI Block_x Slot
phungductung	0:4e245f4bc8ac	756	Slot First Bit Offset: 0
phungductung	0:4e245f4bc8ac	757	Slot Size : 16
phungductung	0:4e245f4bc8ac	758	Slot Number: 4
phungductung	0:4e245f4bc8ac	759	Slot Active: All slot actives */
phungductung	0:4e245f4bc8ac	760	haudio_out_sai.SlotInit.FirstBitOffset = 0;
phungductung	0:4e245f4bc8ac	761	haudio_out_sai.SlotInit.SlotSize = SAI_SLOTSIZE_DATASIZE;
phungductung	0:4e245f4bc8ac	762	haudio_out_sai.SlotInit.SlotNumber = 4;
phungductung	0:4e245f4bc8ac	763	haudio_out_sai.SlotInit.SlotActive = CODEC_AUDIOFRAME_SLOT_0123;
phungductung	0:4e245f4bc8ac	764
phungductung	0:4e245f4bc8ac	765	HAL_SAI_Init(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	766
phungductung	0:4e245f4bc8ac	767	/* Enable SAI peripheral to generate MCLK */
phungductung	0:4e245f4bc8ac	768	__HAL_SAI_ENABLE(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	769	}
phungductung	0:4e245f4bc8ac	770
phungductung	0:4e245f4bc8ac	771
phungductung	0:4e245f4bc8ac	772
phungductung	0:4e245f4bc8ac	773	/**
phungductung	0:4e245f4bc8ac	774	* @brief Deinitializes the output Audio Codec audio interface (SAI).
phungductung	0:4e245f4bc8ac	775	* @retval None
phungductung	0:4e245f4bc8ac	776	*/
phungductung	0:4e245f4bc8ac	777	static void SAIx_Out_DeInit(void)
phungductung	0:4e245f4bc8ac	778	{
phungductung	0:4e245f4bc8ac	779	/* Initialize the haudio_out_sai Instance parameter */
phungductung	0:4e245f4bc8ac	780	haudio_out_sai.Instance = AUDIO_OUT_SAIx;
phungductung	0:4e245f4bc8ac	781
phungductung	0:4e245f4bc8ac	782	/* Disable SAI peripheral */
phungductung	0:4e245f4bc8ac	783	__HAL_SAI_DISABLE(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	784
phungductung	0:4e245f4bc8ac	785	HAL_SAI_DeInit(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	786	}
phungductung	0:4e245f4bc8ac	787
phungductung	0:4e245f4bc8ac	788	/**
phungductung	0:4e245f4bc8ac	789	* @}
phungductung	0:4e245f4bc8ac	790	*/
phungductung	0:4e245f4bc8ac	791
phungductung	0:4e245f4bc8ac	792	/** @defgroup STM32746G_DISCOVERY_AUDIO_Out_Private_Functions STM32746G_DISCOVERY_AUDIO Out Private Functions
phungductung	0:4e245f4bc8ac	793	* @{
phungductung	0:4e245f4bc8ac	794	*/
phungductung	0:4e245f4bc8ac	795
phungductung	0:4e245f4bc8ac	796	/**
phungductung	0:4e245f4bc8ac	797	* @brief Initializes wave recording.
phungductung	0:4e245f4bc8ac	798	* @param InputDevice: INPUT_DEVICE_DIGITAL_MICROPHONE_2 or INPUT_DEVICE_INPUT_LINE_1
phungductung	0:4e245f4bc8ac	799	* @param Volume: Initial volume level (in range 0(Mute)..80(+0dB)..100(+17.625dB))
phungductung	0:4e245f4bc8ac	800	* @param AudioFreq: Audio frequency to be configured for the SAI peripheral.
phungductung	0:4e245f4bc8ac	801	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	802	*/
phungductung	0:4e245f4bc8ac	803	uint8_t BSP_AUDIO_IN_Init(uint16_t InputDevice, uint8_t Volume, uint32_t AudioFreq)
phungductung	0:4e245f4bc8ac	804	{
phungductung	0:4e245f4bc8ac	805	uint8_t ret = AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	806	uint32_t deviceid = 0x00;
phungductung	0:4e245f4bc8ac	807	uint32_t slot_active;
phungductung	0:4e245f4bc8ac	808
phungductung	0:4e245f4bc8ac	809	if ((InputDevice != INPUT_DEVICE_INPUT_LINE_1) && /* Only INPUT_LINE_1 and MICROPHONE_2 inputs supported */
phungductung	0:4e245f4bc8ac	810	(InputDevice != INPUT_DEVICE_DIGITAL_MICROPHONE_2))
phungductung	0:4e245f4bc8ac	811	{
phungductung	0:4e245f4bc8ac	812	ret = AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	813	}
phungductung	0:4e245f4bc8ac	814	else
phungductung	0:4e245f4bc8ac	815	{
phungductung	0:4e245f4bc8ac	816	/* Disable SAI */
phungductung	0:4e245f4bc8ac	817	SAIx_In_DeInit();
phungductung	0:4e245f4bc8ac	818
phungductung	0:4e245f4bc8ac	819	/* PLL clock is set depending on the AudioFreq (44.1khz vs 48khz groups) */
phungductung	0:4e245f4bc8ac	820	BSP_AUDIO_OUT_ClockConfig(&haudio_in_sai, AudioFreq, NULL); /* Clock config is shared between AUDIO IN and OUT */
phungductung	0:4e245f4bc8ac	821
phungductung	0:4e245f4bc8ac	822	/* SAI data transfer preparation:
phungductung	0:4e245f4bc8ac	823	Prepare the Media to be used for the audio transfer from SAI peripheral to memory */
phungductung	0:4e245f4bc8ac	824	haudio_in_sai.Instance = AUDIO_IN_SAIx;
phungductung	0:4e245f4bc8ac	825	if(HAL_SAI_GetState(&haudio_in_sai) == HAL_SAI_STATE_RESET)
phungductung	0:4e245f4bc8ac	826	{
phungductung	0:4e245f4bc8ac	827	/* Init the SAI MSP: this __weak function can be redefined by the application*/
phungductung	0:4e245f4bc8ac	828	BSP_AUDIO_OUT_MspInit(&haudio_in_sai, NULL); /* Initialize GPIOs for SAI2 block A Master signals */
phungductung	0:4e245f4bc8ac	829	BSP_AUDIO_IN_MspInit(&haudio_in_sai, NULL);
phungductung	0:4e245f4bc8ac	830	}
phungductung	0:4e245f4bc8ac	831
phungductung	0:4e245f4bc8ac	832	/* Configure SAI in master RX mode :
phungductung	0:4e245f4bc8ac	833	* - SAI2_block_A in master RX mode
phungductung	0:4e245f4bc8ac	834	* - SAI2_block_B in slave RX mode synchronous from SAI2_block_A
phungductung	0:4e245f4bc8ac	835	*/
phungductung	0:4e245f4bc8ac	836	if (InputDevice == INPUT_DEVICE_DIGITAL_MICROPHONE_2)
phungductung	0:4e245f4bc8ac	837	{
phungductung	0:4e245f4bc8ac	838	slot_active = CODEC_AUDIOFRAME_SLOT_13;
phungductung	0:4e245f4bc8ac	839	}
phungductung	0:4e245f4bc8ac	840	else
phungductung	0:4e245f4bc8ac	841	{
phungductung	0:4e245f4bc8ac	842	slot_active = CODEC_AUDIOFRAME_SLOT_02;
phungductung	0:4e245f4bc8ac	843	}
phungductung	0:4e245f4bc8ac	844	SAIx_In_Init(SAI_MODEMASTER_RX, slot_active, AudioFreq);
phungductung	0:4e245f4bc8ac	845
phungductung	0:4e245f4bc8ac	846	/* wm8994 codec initialization */
phungductung	0:4e245f4bc8ac	847	deviceid = wm8994_drv.ReadID(AUDIO_I2C_ADDRESS);
phungductung	0:4e245f4bc8ac	848
phungductung	0:4e245f4bc8ac	849	if((deviceid) == WM8994_ID)
phungductung	0:4e245f4bc8ac	850	{
phungductung	0:4e245f4bc8ac	851	/* Reset the Codec Registers */
phungductung	0:4e245f4bc8ac	852	wm8994_drv.Reset(AUDIO_I2C_ADDRESS);
phungductung	0:4e245f4bc8ac	853	/* Initialize the audio driver structure */
phungductung	0:4e245f4bc8ac	854	audio_drv = &wm8994_drv;
phungductung	0:4e245f4bc8ac	855	ret = AUDIO_OK;
phungductung	0:4e245f4bc8ac	856	}
phungductung	0:4e245f4bc8ac	857	else
phungductung	0:4e245f4bc8ac	858	{
phungductung	0:4e245f4bc8ac	859	ret = AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	860	}
phungductung	0:4e245f4bc8ac	861
phungductung	0:4e245f4bc8ac	862	if(ret == AUDIO_OK)
phungductung	0:4e245f4bc8ac	863	{
phungductung	0:4e245f4bc8ac	864	/* Initialize the codec internal registers */
phungductung	0:4e245f4bc8ac	865	audio_drv->Init(AUDIO_I2C_ADDRESS, InputDevice, Volume, AudioFreq);
phungductung	0:4e245f4bc8ac	866	}
phungductung	0:4e245f4bc8ac	867	}
phungductung	0:4e245f4bc8ac	868	return ret;
phungductung	0:4e245f4bc8ac	869	}
phungductung	0:4e245f4bc8ac	870
phungductung	0:4e245f4bc8ac	871	/**
phungductung	0:4e245f4bc8ac	872	* @brief Initializes wave recording and playback in parallel.
phungductung	0:4e245f4bc8ac	873	* @param InputDevice: INPUT_DEVICE_DIGITAL_MICROPHONE_2
phungductung	0:4e245f4bc8ac	874	* @param OutputDevice: OUTPUT_DEVICE_SPEAKER, OUTPUT_DEVICE_HEADPHONE,
phungductung	0:4e245f4bc8ac	875	* or OUTPUT_DEVICE_BOTH.
phungductung	0:4e245f4bc8ac	876	* @param Volume: Initial volume level (in range 0(Mute)..80(+0dB)..100(+17.625dB))
phungductung	0:4e245f4bc8ac	877	* @param AudioFreq: Audio frequency to be configured for the SAI peripheral.
phungductung	0:4e245f4bc8ac	878	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	879	*/
phungductung	0:4e245f4bc8ac	880	uint8_t BSP_AUDIO_IN_OUT_Init(uint16_t InputDevice, uint16_t OutputDevice, uint8_t Volume, uint32_t AudioFreq)
phungductung	0:4e245f4bc8ac	881	{
phungductung	0:4e245f4bc8ac	882	uint8_t ret = AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	883	uint32_t deviceid = 0x00;
phungductung	0:4e245f4bc8ac	884	uint32_t slot_active;
phungductung	0:4e245f4bc8ac	885
phungductung	0:4e245f4bc8ac	886	if (InputDevice != INPUT_DEVICE_DIGITAL_MICROPHONE_2) /* Only MICROPHONE_2 input supported */
phungductung	0:4e245f4bc8ac	887	{
phungductung	0:4e245f4bc8ac	888	ret = AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	889	}
phungductung	0:4e245f4bc8ac	890	else
phungductung	0:4e245f4bc8ac	891	{
phungductung	0:4e245f4bc8ac	892	/* Disable SAI */
phungductung	0:4e245f4bc8ac	893	SAIx_In_DeInit();
phungductung	0:4e245f4bc8ac	894	SAIx_Out_DeInit();
phungductung	0:4e245f4bc8ac	895
phungductung	0:4e245f4bc8ac	896	/* PLL clock is set depending on the AudioFreq (44.1khz vs 48khz groups) */
phungductung	0:4e245f4bc8ac	897	BSP_AUDIO_OUT_ClockConfig(&haudio_in_sai, AudioFreq, NULL); /* Clock config is shared between AUDIO IN and OUT */
phungductung	0:4e245f4bc8ac	898
phungductung	0:4e245f4bc8ac	899	/* SAI data transfer preparation:
phungductung	0:4e245f4bc8ac	900	Prepare the Media to be used for the audio transfer from SAI peripheral to memory */
phungductung	0:4e245f4bc8ac	901	haudio_in_sai.Instance = AUDIO_IN_SAIx;
phungductung	0:4e245f4bc8ac	902	if(HAL_SAI_GetState(&haudio_in_sai) == HAL_SAI_STATE_RESET)
phungductung	0:4e245f4bc8ac	903	{
phungductung	0:4e245f4bc8ac	904	/* Init the SAI MSP: this __weak function can be redefined by the application*/
phungductung	0:4e245f4bc8ac	905	BSP_AUDIO_IN_MspInit(&haudio_in_sai, NULL);
phungductung	0:4e245f4bc8ac	906	}
phungductung	0:4e245f4bc8ac	907
phungductung	0:4e245f4bc8ac	908	/* SAI data transfer preparation:
phungductung	0:4e245f4bc8ac	909	Prepare the Media to be used for the audio transfer from memory to SAI peripheral */
phungductung	0:4e245f4bc8ac	910	haudio_out_sai.Instance = AUDIO_OUT_SAIx;
phungductung	0:4e245f4bc8ac	911	if(HAL_SAI_GetState(&haudio_out_sai) == HAL_SAI_STATE_RESET)
phungductung	0:4e245f4bc8ac	912	{
phungductung	0:4e245f4bc8ac	913	/* Init the SAI MSP: this __weak function can be redefined by the application*/
phungductung	0:4e245f4bc8ac	914	BSP_AUDIO_OUT_MspInit(&haudio_out_sai, NULL);
phungductung	0:4e245f4bc8ac	915	}
phungductung	0:4e245f4bc8ac	916
phungductung	0:4e245f4bc8ac	917	/* Configure SAI in master mode :
phungductung	0:4e245f4bc8ac	918	* - SAI2_block_A in master TX mode
phungductung	0:4e245f4bc8ac	919	* - SAI2_block_B in slave RX mode synchronous from SAI2_block_A
phungductung	0:4e245f4bc8ac	920	*/
phungductung	0:4e245f4bc8ac	921	if (InputDevice == INPUT_DEVICE_DIGITAL_MICROPHONE_2)
phungductung	0:4e245f4bc8ac	922	{
phungductung	0:4e245f4bc8ac	923	slot_active = CODEC_AUDIOFRAME_SLOT_13;
phungductung	0:4e245f4bc8ac	924	}
phungductung	0:4e245f4bc8ac	925	else
phungductung	0:4e245f4bc8ac	926	{
phungductung	0:4e245f4bc8ac	927	slot_active = CODEC_AUDIOFRAME_SLOT_02;
phungductung	0:4e245f4bc8ac	928	}
phungductung	0:4e245f4bc8ac	929	SAIx_In_Init(SAI_MODEMASTER_TX, slot_active, AudioFreq);
phungductung	0:4e245f4bc8ac	930
phungductung	0:4e245f4bc8ac	931	/* wm8994 codec initialization */
phungductung	0:4e245f4bc8ac	932	deviceid = wm8994_drv.ReadID(AUDIO_I2C_ADDRESS);
phungductung	0:4e245f4bc8ac	933
phungductung	0:4e245f4bc8ac	934	if((deviceid) == WM8994_ID)
phungductung	0:4e245f4bc8ac	935	{
phungductung	0:4e245f4bc8ac	936	/* Reset the Codec Registers */
phungductung	0:4e245f4bc8ac	937	wm8994_drv.Reset(AUDIO_I2C_ADDRESS);
phungductung	0:4e245f4bc8ac	938	/* Initialize the audio driver structure */
phungductung	0:4e245f4bc8ac	939	audio_drv = &wm8994_drv;
phungductung	0:4e245f4bc8ac	940	ret = AUDIO_OK;
phungductung	0:4e245f4bc8ac	941	}
phungductung	0:4e245f4bc8ac	942	else
phungductung	0:4e245f4bc8ac	943	{
phungductung	0:4e245f4bc8ac	944	ret = AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	945	}
phungductung	0:4e245f4bc8ac	946
phungductung	0:4e245f4bc8ac	947	if(ret == AUDIO_OK)
phungductung	0:4e245f4bc8ac	948	{
phungductung	0:4e245f4bc8ac	949	/* Initialize the codec internal registers */
phungductung	0:4e245f4bc8ac	950	audio_drv->Init(AUDIO_I2C_ADDRESS, InputDevice \| OutputDevice, Volume, AudioFreq);
phungductung	0:4e245f4bc8ac	951	}
phungductung	0:4e245f4bc8ac	952	}
phungductung	0:4e245f4bc8ac	953	return ret;
phungductung	0:4e245f4bc8ac	954	}
phungductung	0:4e245f4bc8ac	955
phungductung	0:4e245f4bc8ac	956
phungductung	0:4e245f4bc8ac	957	/**
phungductung	0:4e245f4bc8ac	958	* @brief Starts audio recording.
phungductung	0:4e245f4bc8ac	959	* @param pbuf: Main buffer pointer for the recorded data storing
phungductung	0:4e245f4bc8ac	960	* @param size: size of the recorded buffer in number of elements (typically number of half-words)
phungductung	0:4e245f4bc8ac	961	* Be careful that it is not the same unit than BSP_AUDIO_OUT_Play function
phungductung	0:4e245f4bc8ac	962	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	963	*/
phungductung	0:4e245f4bc8ac	964	uint8_t BSP_AUDIO_IN_Record(uint16_t* pbuf, uint32_t size)
phungductung	0:4e245f4bc8ac	965	{
phungductung	0:4e245f4bc8ac	966	uint32_t ret = AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	967
phungductung	0:4e245f4bc8ac	968	/* Start the process receive DMA */
phungductung	0:4e245f4bc8ac	969	HAL_SAI_Receive_DMA(&haudio_in_sai, (uint8_t*)pbuf, size);
phungductung	0:4e245f4bc8ac	970
phungductung	0:4e245f4bc8ac	971	/* Return AUDIO_OK when all operations are correctly done */
phungductung	0:4e245f4bc8ac	972	ret = AUDIO_OK;
phungductung	0:4e245f4bc8ac	973
phungductung	0:4e245f4bc8ac	974	return ret;
phungductung	0:4e245f4bc8ac	975	}
phungductung	0:4e245f4bc8ac	976
phungductung	0:4e245f4bc8ac	977	/**
phungductung	0:4e245f4bc8ac	978	* @brief Stops audio recording.
phungductung	0:4e245f4bc8ac	979	* @param Option: could be one of the following parameters
phungductung	0:4e245f4bc8ac	980	* - CODEC_PDWN_SW: for software power off (by writing registers).
phungductung	0:4e245f4bc8ac	981	* Then no need to reconfigure the Codec after power on.
phungductung	0:4e245f4bc8ac	982	* - CODEC_PDWN_HW: completely shut down the codec (physically).
phungductung	0:4e245f4bc8ac	983	* Then need to reconfigure the Codec after power on.
phungductung	0:4e245f4bc8ac	984	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	985	*/
phungductung	0:4e245f4bc8ac	986	uint8_t BSP_AUDIO_IN_Stop(uint32_t Option)
phungductung	0:4e245f4bc8ac	987	{
phungductung	0:4e245f4bc8ac	988	/* Call the Media layer stop function */
phungductung	0:4e245f4bc8ac	989	HAL_SAI_DMAStop(&haudio_in_sai);
phungductung	0:4e245f4bc8ac	990
phungductung	0:4e245f4bc8ac	991	/* Call Audio Codec Stop function */
phungductung	0:4e245f4bc8ac	992	if(audio_drv->Stop(AUDIO_I2C_ADDRESS, Option) != 0)
phungductung	0:4e245f4bc8ac	993	{
phungductung	0:4e245f4bc8ac	994	return AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	995	}
phungductung	0:4e245f4bc8ac	996	else
phungductung	0:4e245f4bc8ac	997	{
phungductung	0:4e245f4bc8ac	998	if(Option == CODEC_PDWN_HW)
phungductung	0:4e245f4bc8ac	999	{
phungductung	0:4e245f4bc8ac	1000	/* Wait at least 100us */
phungductung	0:4e245f4bc8ac	1001	HAL_Delay(1);
phungductung	0:4e245f4bc8ac	1002	}
phungductung	0:4e245f4bc8ac	1003	/* Return AUDIO_OK when all operations are correctly done */
phungductung	0:4e245f4bc8ac	1004	return AUDIO_OK;
phungductung	0:4e245f4bc8ac	1005	}
phungductung	0:4e245f4bc8ac	1006	}
phungductung	0:4e245f4bc8ac	1007
phungductung	0:4e245f4bc8ac	1008	/**
phungductung	0:4e245f4bc8ac	1009	* @brief Pauses the audio file stream.
phungductung	0:4e245f4bc8ac	1010	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	1011	*/
phungductung	0:4e245f4bc8ac	1012	uint8_t BSP_AUDIO_IN_Pause(void)
phungductung	0:4e245f4bc8ac	1013	{
phungductung	0:4e245f4bc8ac	1014	/* Call the Media layer pause function */
phungductung	0:4e245f4bc8ac	1015	HAL_SAI_DMAPause(&haudio_in_sai);
phungductung	0:4e245f4bc8ac	1016	/* Return AUDIO_OK when all operations are correctly done */
phungductung	0:4e245f4bc8ac	1017	return AUDIO_OK;
phungductung	0:4e245f4bc8ac	1018	}
phungductung	0:4e245f4bc8ac	1019
phungductung	0:4e245f4bc8ac	1020	/**
phungductung	0:4e245f4bc8ac	1021	* @brief Resumes the audio file stream.
phungductung	0:4e245f4bc8ac	1022	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	1023	*/
phungductung	0:4e245f4bc8ac	1024	uint8_t BSP_AUDIO_IN_Resume(void)
phungductung	0:4e245f4bc8ac	1025	{
phungductung	0:4e245f4bc8ac	1026	/* Call the Media layer pause/resume function */
phungductung	0:4e245f4bc8ac	1027	HAL_SAI_DMAResume(&haudio_in_sai);
phungductung	0:4e245f4bc8ac	1028	/* Return AUDIO_OK when all operations are correctly done */
phungductung	0:4e245f4bc8ac	1029	return AUDIO_OK;
phungductung	0:4e245f4bc8ac	1030	}
phungductung	0:4e245f4bc8ac	1031
phungductung	0:4e245f4bc8ac	1032	/**
phungductung	0:4e245f4bc8ac	1033	* @brief Controls the audio in volume level.
phungductung	0:4e245f4bc8ac	1034	* @param Volume: Volume level in range 0(Mute)..80(+0dB)..100(+17.625dB)
phungductung	0:4e245f4bc8ac	1035	* @retval AUDIO_OK if correct communication, else wrong communication
phungductung	0:4e245f4bc8ac	1036	*/
phungductung	0:4e245f4bc8ac	1037	uint8_t BSP_AUDIO_IN_SetVolume(uint8_t Volume)
phungductung	0:4e245f4bc8ac	1038	{
phungductung	0:4e245f4bc8ac	1039	/* Call the codec volume control function with converted volume value */
phungductung	0:4e245f4bc8ac	1040	if(audio_drv->SetVolume(AUDIO_I2C_ADDRESS, Volume) != 0)
phungductung	0:4e245f4bc8ac	1041	{
phungductung	0:4e245f4bc8ac	1042	return AUDIO_ERROR;
phungductung	0:4e245f4bc8ac	1043	}
phungductung	0:4e245f4bc8ac	1044	else
phungductung	0:4e245f4bc8ac	1045	{
phungductung	0:4e245f4bc8ac	1046	/* Set the Global variable AudioInVolume */
phungductung	0:4e245f4bc8ac	1047	AudioInVolume = Volume;
phungductung	0:4e245f4bc8ac	1048	/* Return AUDIO_OK when all operations are correctly done */
phungductung	0:4e245f4bc8ac	1049	return AUDIO_OK;
phungductung	0:4e245f4bc8ac	1050	}
phungductung	0:4e245f4bc8ac	1051	}
phungductung	0:4e245f4bc8ac	1052
phungductung	0:4e245f4bc8ac	1053	/**
phungductung	0:4e245f4bc8ac	1054	* @brief Deinit the audio IN peripherals.
phungductung	0:4e245f4bc8ac	1055	* @retval None
phungductung	0:4e245f4bc8ac	1056	*/
phungductung	0:4e245f4bc8ac	1057	void BSP_AUDIO_IN_DeInit(void)
phungductung	0:4e245f4bc8ac	1058	{
phungductung	0:4e245f4bc8ac	1059	SAIx_In_DeInit();
phungductung	0:4e245f4bc8ac	1060	/* DeInit the SAI MSP : this __weak function can be rewritten by the application */
phungductung	0:4e245f4bc8ac	1061	BSP_AUDIO_IN_MspDeInit(&haudio_in_sai, NULL);
phungductung	0:4e245f4bc8ac	1062	}
phungductung	0:4e245f4bc8ac	1063
phungductung	0:4e245f4bc8ac	1064	/**
phungductung	0:4e245f4bc8ac	1065	* @brief Rx Transfer completed callbacks.
phungductung	0:4e245f4bc8ac	1066	* @param hsai: SAI handle
phungductung	0:4e245f4bc8ac	1067	* @retval None
phungductung	0:4e245f4bc8ac	1068	*/
phungductung	0:4e245f4bc8ac	1069	void HAL_SAI_RxCpltCallback(SAI_HandleTypeDef *hsai)
phungductung	0:4e245f4bc8ac	1070	{
phungductung	0:4e245f4bc8ac	1071	/* Call the record update function to get the next buffer to fill and its size (size is ignored) */
phungductung	0:4e245f4bc8ac	1072	BSP_AUDIO_IN_TransferComplete_CallBack();
phungductung	0:4e245f4bc8ac	1073	}
phungductung	0:4e245f4bc8ac	1074
phungductung	0:4e245f4bc8ac	1075	/**
phungductung	0:4e245f4bc8ac	1076	* @brief Rx Half Transfer completed callbacks.
phungductung	0:4e245f4bc8ac	1077	* @param hsai: SAI handle
phungductung	0:4e245f4bc8ac	1078	* @retval None
phungductung	0:4e245f4bc8ac	1079	*/
phungductung	0:4e245f4bc8ac	1080	void HAL_SAI_RxHalfCpltCallback(SAI_HandleTypeDef *hsai)
phungductung	0:4e245f4bc8ac	1081	{
phungductung	0:4e245f4bc8ac	1082	/* Manage the remaining file size and new address offset: This function
phungductung	0:4e245f4bc8ac	1083	should be coded by user (its prototype is already declared in stm32746g_discovery_audio.h) */
phungductung	0:4e245f4bc8ac	1084	BSP_AUDIO_IN_HalfTransfer_CallBack();
phungductung	0:4e245f4bc8ac	1085	}
phungductung	0:4e245f4bc8ac	1086
phungductung	0:4e245f4bc8ac	1087	/**
phungductung	0:4e245f4bc8ac	1088	* @brief User callback when record buffer is filled.
phungductung	0:4e245f4bc8ac	1089	* @retval None
phungductung	0:4e245f4bc8ac	1090	*/
phungductung	0:4e245f4bc8ac	1091	__weak void BSP_AUDIO_IN_TransferComplete_CallBack(void)
phungductung	0:4e245f4bc8ac	1092	{
phungductung	0:4e245f4bc8ac	1093	/* This function should be implemented by the user application.
phungductung	0:4e245f4bc8ac	1094	It is called into this driver when the current buffer is filled
phungductung	0:4e245f4bc8ac	1095	to prepare the next buffer pointer and its size. */
phungductung	0:4e245f4bc8ac	1096	}
phungductung	0:4e245f4bc8ac	1097
phungductung	0:4e245f4bc8ac	1098	/**
phungductung	0:4e245f4bc8ac	1099	* @brief Manages the DMA Half Transfer complete event.
phungductung	0:4e245f4bc8ac	1100	* @retval None
phungductung	0:4e245f4bc8ac	1101	*/
phungductung	0:4e245f4bc8ac	1102	__weak void BSP_AUDIO_IN_HalfTransfer_CallBack(void)
phungductung	0:4e245f4bc8ac	1103	{
phungductung	0:4e245f4bc8ac	1104	/* This function should be implemented by the user application.
phungductung	0:4e245f4bc8ac	1105	It is called into this driver when the current buffer is filled
phungductung	0:4e245f4bc8ac	1106	to prepare the next buffer pointer and its size. */
phungductung	0:4e245f4bc8ac	1107	}
phungductung	0:4e245f4bc8ac	1108
phungductung	0:4e245f4bc8ac	1109	/**
phungductung	0:4e245f4bc8ac	1110	* @brief Audio IN Error callback function.
phungductung	0:4e245f4bc8ac	1111	* @retval None
phungductung	0:4e245f4bc8ac	1112	*/
phungductung	0:4e245f4bc8ac	1113	__weak void BSP_AUDIO_IN_Error_CallBack(void)
phungductung	0:4e245f4bc8ac	1114	{
phungductung	0:4e245f4bc8ac	1115	/* This function is called when an Interrupt due to transfer error on or peripheral
phungductung	0:4e245f4bc8ac	1116	error occurs. */
phungductung	0:4e245f4bc8ac	1117	}
phungductung	0:4e245f4bc8ac	1118
phungductung	0:4e245f4bc8ac	1119	/**
phungductung	0:4e245f4bc8ac	1120	* @brief Initializes BSP_AUDIO_IN MSP.
phungductung	0:4e245f4bc8ac	1121	* @param hsai: SAI handle
phungductung	0:4e245f4bc8ac	1122	* @param Params
phungductung	0:4e245f4bc8ac	1123	* @retval None
phungductung	0:4e245f4bc8ac	1124	*/
phungductung	0:4e245f4bc8ac	1125	__weak void BSP_AUDIO_IN_MspInit(SAI_HandleTypeDef hsai, void Params)
phungductung	0:4e245f4bc8ac	1126	{
phungductung	0:4e245f4bc8ac	1127	static DMA_HandleTypeDef hdma_sai_rx;
phungductung	0:4e245f4bc8ac	1128	GPIO_InitTypeDef gpio_init_structure;
phungductung	0:4e245f4bc8ac	1129
phungductung	0:4e245f4bc8ac	1130	/* Enable SAI clock */
phungductung	0:4e245f4bc8ac	1131	AUDIO_IN_SAIx_CLK_ENABLE();
phungductung	0:4e245f4bc8ac	1132
phungductung	0:4e245f4bc8ac	1133	/* Enable SD GPIO clock */
phungductung	0:4e245f4bc8ac	1134	AUDIO_IN_SAIx_SD_ENABLE();
phungductung	0:4e245f4bc8ac	1135	/* CODEC_SAI pin configuration: SD pin */
phungductung	0:4e245f4bc8ac	1136	gpio_init_structure.Pin = AUDIO_IN_SAIx_SD_PIN;
phungductung	0:4e245f4bc8ac	1137	gpio_init_structure.Mode = GPIO_MODE_AF_PP;
phungductung	0:4e245f4bc8ac	1138	gpio_init_structure.Pull = GPIO_NOPULL;
phungductung	0:4e245f4bc8ac	1139	gpio_init_structure.Speed = GPIO_SPEED_FAST;
phungductung	0:4e245f4bc8ac	1140	gpio_init_structure.Alternate = AUDIO_IN_SAIx_SD_AF;
phungductung	0:4e245f4bc8ac	1141	HAL_GPIO_Init(AUDIO_IN_SAIx_SD_GPIO_PORT, &gpio_init_structure);
phungductung	0:4e245f4bc8ac	1142
phungductung	0:4e245f4bc8ac	1143	/* Enable Audio INT GPIO clock */
phungductung	0:4e245f4bc8ac	1144	AUDIO_IN_INT_GPIO_ENABLE();
phungductung	0:4e245f4bc8ac	1145	/* Audio INT pin configuration: input */
phungductung	0:4e245f4bc8ac	1146	gpio_init_structure.Pin = AUDIO_IN_INT_GPIO_PIN;
phungductung	0:4e245f4bc8ac	1147	gpio_init_structure.Mode = GPIO_MODE_INPUT;
phungductung	0:4e245f4bc8ac	1148	gpio_init_structure.Pull = GPIO_NOPULL;
phungductung	0:4e245f4bc8ac	1149	gpio_init_structure.Speed = GPIO_SPEED_FAST;
phungductung	0:4e245f4bc8ac	1150	HAL_GPIO_Init(AUDIO_IN_INT_GPIO_PORT, &gpio_init_structure);
phungductung	0:4e245f4bc8ac	1151
phungductung	0:4e245f4bc8ac	1152	/* Enable the DMA clock */
phungductung	0:4e245f4bc8ac	1153	AUDIO_IN_SAIx_DMAx_CLK_ENABLE();
phungductung	0:4e245f4bc8ac	1154
phungductung	0:4e245f4bc8ac	1155	if(hsai->Instance == AUDIO_IN_SAIx)
phungductung	0:4e245f4bc8ac	1156	{
phungductung	0:4e245f4bc8ac	1157	/* Configure the hdma_sai_rx handle parameters */
phungductung	0:4e245f4bc8ac	1158	hdma_sai_rx.Init.Channel = AUDIO_IN_SAIx_DMAx_CHANNEL;
phungductung	0:4e245f4bc8ac	1159	hdma_sai_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
phungductung	0:4e245f4bc8ac	1160	hdma_sai_rx.Init.PeriphInc = DMA_PINC_DISABLE;
phungductung	0:4e245f4bc8ac	1161	hdma_sai_rx.Init.MemInc = DMA_MINC_ENABLE;
phungductung	0:4e245f4bc8ac	1162	hdma_sai_rx.Init.PeriphDataAlignment = AUDIO_IN_SAIx_DMAx_PERIPH_DATA_SIZE;
phungductung	0:4e245f4bc8ac	1163	hdma_sai_rx.Init.MemDataAlignment = AUDIO_IN_SAIx_DMAx_MEM_DATA_SIZE;
phungductung	0:4e245f4bc8ac	1164	hdma_sai_rx.Init.Mode = DMA_CIRCULAR;
phungductung	0:4e245f4bc8ac	1165	hdma_sai_rx.Init.Priority = DMA_PRIORITY_HIGH;
phungductung	0:4e245f4bc8ac	1166	hdma_sai_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
phungductung	0:4e245f4bc8ac	1167	hdma_sai_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
phungductung	0:4e245f4bc8ac	1168	hdma_sai_rx.Init.MemBurst = DMA_MBURST_SINGLE;
phungductung	0:4e245f4bc8ac	1169	hdma_sai_rx.Init.PeriphBurst = DMA_MBURST_SINGLE;
phungductung	0:4e245f4bc8ac	1170
phungductung	0:4e245f4bc8ac	1171	hdma_sai_rx.Instance = AUDIO_IN_SAIx_DMAx_STREAM;
phungductung	0:4e245f4bc8ac	1172
phungductung	0:4e245f4bc8ac	1173	/* Associate the DMA handle */
phungductung	0:4e245f4bc8ac	1174	__HAL_LINKDMA(hsai, hdmarx, hdma_sai_rx);
phungductung	0:4e245f4bc8ac	1175
phungductung	0:4e245f4bc8ac	1176	/* Deinitialize the Stream for new transfer */
phungductung	0:4e245f4bc8ac	1177	HAL_DMA_DeInit(&hdma_sai_rx);
phungductung	0:4e245f4bc8ac	1178
phungductung	0:4e245f4bc8ac	1179	/* Configure the DMA Stream */
phungductung	0:4e245f4bc8ac	1180	HAL_DMA_Init(&hdma_sai_rx);
phungductung	0:4e245f4bc8ac	1181	}
phungductung	0:4e245f4bc8ac	1182
phungductung	0:4e245f4bc8ac	1183	/* SAI DMA IRQ Channel configuration */
phungductung	0:4e245f4bc8ac	1184	#if ( __MBED__ == 1)
phungductung	0:4e245f4bc8ac	1185	IRQn_Type irqn = (IRQn_Type)(AUDIO_IN_SAIx_DMAx_IRQ);
phungductung	0:4e245f4bc8ac	1186	NVIC_ClearPendingIRQ(irqn);
phungductung	0:4e245f4bc8ac	1187	NVIC_DisableIRQ(irqn);
phungductung	0:4e245f4bc8ac	1188	NVIC_SetPriority(irqn, AUDIO_IN_IRQ_PREPRIO);
phungductung	0:4e245f4bc8ac	1189	NVIC_SetVector(irqn, (uint32_t)AUDIO_IN_SAIx_DMAx_IRQHandler);
phungductung	0:4e245f4bc8ac	1190	NVIC_EnableIRQ(irqn);
phungductung	0:4e245f4bc8ac	1191	#else
phungductung	0:4e245f4bc8ac	1192	HAL_NVIC_SetPriority(AUDIO_IN_SAIx_DMAx_IRQ, AUDIO_IN_IRQ_PREPRIO, 0);
phungductung	0:4e245f4bc8ac	1193	HAL_NVIC_EnableIRQ(AUDIO_IN_SAIx_DMAx_IRQ);
phungductung	0:4e245f4bc8ac	1194	#endif
phungductung	0:4e245f4bc8ac	1195
phungductung	0:4e245f4bc8ac	1196	/* Audio INT IRQ Channel configuration */
phungductung	0:4e245f4bc8ac	1197	#if ( __MBED__ == 1)
phungductung	0:4e245f4bc8ac	1198	irqn = (IRQn_Type)(AUDIO_IN_INT_IRQ);
phungductung	0:4e245f4bc8ac	1199	NVIC_ClearPendingIRQ(irqn);
phungductung	0:4e245f4bc8ac	1200	NVIC_DisableIRQ(irqn);
phungductung	0:4e245f4bc8ac	1201	NVIC_SetPriority(irqn, AUDIO_IN_IRQ_PREPRIO);
phungductung	0:4e245f4bc8ac	1202	NVIC_SetVector(irqn, (uint32_t)AUDIO_IN_INT_IRQHandler);
phungductung	0:4e245f4bc8ac	1203	NVIC_EnableIRQ(irqn);
phungductung	0:4e245f4bc8ac	1204	#else
phungductung	0:4e245f4bc8ac	1205	HAL_NVIC_SetPriority(AUDIO_IN_INT_IRQ, AUDIO_IN_IRQ_PREPRIO, 0);
phungductung	0:4e245f4bc8ac	1206	HAL_NVIC_EnableIRQ(AUDIO_IN_INT_IRQ);
phungductung	0:4e245f4bc8ac	1207	#endif
phungductung	0:4e245f4bc8ac	1208	}
phungductung	0:4e245f4bc8ac	1209
phungductung	0:4e245f4bc8ac	1210	/**
phungductung	0:4e245f4bc8ac	1211	* @brief DeInitializes BSP_AUDIO_IN MSP.
phungductung	0:4e245f4bc8ac	1212	* @param hsai: SAI handle
phungductung	0:4e245f4bc8ac	1213	* @param Params
phungductung	0:4e245f4bc8ac	1214	* @retval None
phungductung	0:4e245f4bc8ac	1215	*/
phungductung	0:4e245f4bc8ac	1216	__weak void BSP_AUDIO_IN_MspDeInit(SAI_HandleTypeDef hsai, void Params)
phungductung	0:4e245f4bc8ac	1217	{
phungductung	0:4e245f4bc8ac	1218	GPIO_InitTypeDef gpio_init_structure;
phungductung	0:4e245f4bc8ac	1219
phungductung	0:4e245f4bc8ac	1220	static DMA_HandleTypeDef hdma_sai_rx;
phungductung	0:4e245f4bc8ac	1221
phungductung	0:4e245f4bc8ac	1222	/* SAI IN DMA IRQ Channel deactivation */
phungductung	0:4e245f4bc8ac	1223	HAL_NVIC_DisableIRQ(AUDIO_IN_SAIx_DMAx_IRQ);
phungductung	0:4e245f4bc8ac	1224
phungductung	0:4e245f4bc8ac	1225	if(hsai->Instance == AUDIO_IN_SAIx)
phungductung	0:4e245f4bc8ac	1226	{
phungductung	0:4e245f4bc8ac	1227	/* Deinitialize the Stream for new transfer */
phungductung	0:4e245f4bc8ac	1228	HAL_DMA_DeInit(&hdma_sai_rx);
phungductung	0:4e245f4bc8ac	1229	}
phungductung	0:4e245f4bc8ac	1230
phungductung	0:4e245f4bc8ac	1231	/* Disable SAI block */
phungductung	0:4e245f4bc8ac	1232	__HAL_SAI_DISABLE(hsai);
phungductung	0:4e245f4bc8ac	1233
phungductung	0:4e245f4bc8ac	1234	/* Disable pin: SD pin */
phungductung	0:4e245f4bc8ac	1235	gpio_init_structure.Pin = AUDIO_IN_SAIx_SD_PIN;
phungductung	0:4e245f4bc8ac	1236	HAL_GPIO_DeInit(AUDIO_IN_SAIx_SD_GPIO_PORT, gpio_init_structure.Pin);
phungductung	0:4e245f4bc8ac	1237
phungductung	0:4e245f4bc8ac	1238	/* Disable SAI clock */
phungductung	0:4e245f4bc8ac	1239	AUDIO_IN_SAIx_CLK_DISABLE();
phungductung	0:4e245f4bc8ac	1240
phungductung	0:4e245f4bc8ac	1241	/* GPIO pins clock and DMA clock can be shut down in the application
phungductung	0:4e245f4bc8ac	1242	by surcharging this __weak function */
phungductung	0:4e245f4bc8ac	1243	}
phungductung	0:4e245f4bc8ac	1244
phungductung	0:4e245f4bc8ac	1245
phungductung	0:4e245f4bc8ac	1246	/*******************************************************************************
phungductung	0:4e245f4bc8ac	1247	Static Functions
phungductung	0:4e245f4bc8ac	1248	*******************************************************************************/
phungductung	0:4e245f4bc8ac	1249
phungductung	0:4e245f4bc8ac	1250	/**
phungductung	0:4e245f4bc8ac	1251	* @brief Initializes the input Audio Codec audio interface (SAI).
phungductung	0:4e245f4bc8ac	1252	* @param SaiOutMode: SAI_MODEMASTER_TX (for record and playback in parallel)
phungductung	0:4e245f4bc8ac	1253	* or SAI_MODEMASTER_RX (for record only).
phungductung	0:4e245f4bc8ac	1254	* @param SlotActive: CODEC_AUDIOFRAME_SLOT_02 or CODEC_AUDIOFRAME_SLOT_13
phungductung	0:4e245f4bc8ac	1255	* @param AudioFreq: Audio frequency to be configured for the SAI peripheral.
phungductung	0:4e245f4bc8ac	1256	* @retval None
phungductung	0:4e245f4bc8ac	1257	*/
phungductung	0:4e245f4bc8ac	1258	static void SAIx_In_Init(uint32_t SaiOutMode, uint32_t SlotActive, uint32_t AudioFreq)
phungductung	0:4e245f4bc8ac	1259	{
phungductung	0:4e245f4bc8ac	1260	/* Initialize SAI2 block A in MASTER RX */
phungductung	0:4e245f4bc8ac	1261	/* Initialize the haudio_out_sai Instance parameter */
phungductung	0:4e245f4bc8ac	1262	haudio_out_sai.Instance = AUDIO_OUT_SAIx;
phungductung	0:4e245f4bc8ac	1263
phungductung	0:4e245f4bc8ac	1264	/* Disable SAI peripheral to allow access to SAI internal registers */
phungductung	0:4e245f4bc8ac	1265	__HAL_SAI_DISABLE(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	1266
phungductung	0:4e245f4bc8ac	1267	/* Configure SAI_Block_x
phungductung	0:4e245f4bc8ac	1268	LSBFirst: Disabled
phungductung	0:4e245f4bc8ac	1269	DataSize: 16 */
phungductung	0:4e245f4bc8ac	1270	haudio_out_sai.Init.AudioFrequency = AudioFreq;
phungductung	0:4e245f4bc8ac	1271	haudio_out_sai.Init.AudioMode = SaiOutMode;
phungductung	0:4e245f4bc8ac	1272	haudio_out_sai.Init.NoDivider = SAI_MASTERDIVIDER_ENABLED;
phungductung	0:4e245f4bc8ac	1273	haudio_out_sai.Init.Protocol = SAI_FREE_PROTOCOL;
phungductung	0:4e245f4bc8ac	1274	haudio_out_sai.Init.DataSize = SAI_DATASIZE_16;
phungductung	0:4e245f4bc8ac	1275	haudio_out_sai.Init.FirstBit = SAI_FIRSTBIT_MSB;
phungductung	0:4e245f4bc8ac	1276	haudio_out_sai.Init.ClockStrobing = SAI_CLOCKSTROBING_RISINGEDGE;
phungductung	0:4e245f4bc8ac	1277	haudio_out_sai.Init.Synchro = SAI_ASYNCHRONOUS;
phungductung	0:4e245f4bc8ac	1278	haudio_out_sai.Init.OutputDrive = SAI_OUTPUTDRIVE_ENABLED;
phungductung	0:4e245f4bc8ac	1279	haudio_out_sai.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_1QF;
phungductung	0:4e245f4bc8ac	1280
phungductung	0:4e245f4bc8ac	1281	/* Configure SAI_Block_x Frame
phungductung	0:4e245f4bc8ac	1282	Frame Length: 64
phungductung	0:4e245f4bc8ac	1283	Frame active Length: 32
phungductung	0:4e245f4bc8ac	1284	FS Definition: Start frame + Channel Side identification
phungductung	0:4e245f4bc8ac	1285	FS Polarity: FS active Low
phungductung	0:4e245f4bc8ac	1286	FS Offset: FS asserted one bit before the first bit of slot 0 */
phungductung	0:4e245f4bc8ac	1287	haudio_out_sai.FrameInit.FrameLength = 64;
phungductung	0:4e245f4bc8ac	1288	haudio_out_sai.FrameInit.ActiveFrameLength = 32;
phungductung	0:4e245f4bc8ac	1289	haudio_out_sai.FrameInit.FSDefinition = SAI_FS_CHANNEL_IDENTIFICATION;
phungductung	0:4e245f4bc8ac	1290	haudio_out_sai.FrameInit.FSPolarity = SAI_FS_ACTIVE_LOW;
phungductung	0:4e245f4bc8ac	1291	haudio_out_sai.FrameInit.FSOffset = SAI_FS_BEFOREFIRSTBIT;
phungductung	0:4e245f4bc8ac	1292
phungductung	0:4e245f4bc8ac	1293	/* Configure SAI Block_x Slot
phungductung	0:4e245f4bc8ac	1294	Slot First Bit Offset: 0
phungductung	0:4e245f4bc8ac	1295	Slot Size : 16
phungductung	0:4e245f4bc8ac	1296	Slot Number: 4
phungductung	0:4e245f4bc8ac	1297	Slot Active: All slot actives */
phungductung	0:4e245f4bc8ac	1298	haudio_out_sai.SlotInit.FirstBitOffset = 0;
phungductung	0:4e245f4bc8ac	1299	haudio_out_sai.SlotInit.SlotSize = SAI_SLOTSIZE_DATASIZE;
phungductung	0:4e245f4bc8ac	1300	haudio_out_sai.SlotInit.SlotNumber = 4;
phungductung	0:4e245f4bc8ac	1301	haudio_out_sai.SlotInit.SlotActive = SlotActive;
phungductung	0:4e245f4bc8ac	1302
phungductung	0:4e245f4bc8ac	1303	HAL_SAI_Init(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	1304
phungductung	0:4e245f4bc8ac	1305	/* Initialize SAI2 block B in SLAVE RX synchronous from SAI2 block A */
phungductung	0:4e245f4bc8ac	1306	/* Initialize the haudio_in_sai Instance parameter */
phungductung	0:4e245f4bc8ac	1307	haudio_in_sai.Instance = AUDIO_IN_SAIx;
phungductung	0:4e245f4bc8ac	1308
phungductung	0:4e245f4bc8ac	1309	/* Disable SAI peripheral to allow access to SAI internal registers */
phungductung	0:4e245f4bc8ac	1310	__HAL_SAI_DISABLE(&haudio_in_sai);
phungductung	0:4e245f4bc8ac	1311
phungductung	0:4e245f4bc8ac	1312	/* Configure SAI_Block_x
phungductung	0:4e245f4bc8ac	1313	LSBFirst: Disabled
phungductung	0:4e245f4bc8ac	1314	DataSize: 16 */
phungductung	0:4e245f4bc8ac	1315	haudio_in_sai.Init.AudioFrequency = AudioFreq;
phungductung	0:4e245f4bc8ac	1316	haudio_in_sai.Init.AudioMode = SAI_MODESLAVE_RX;
phungductung	0:4e245f4bc8ac	1317	haudio_in_sai.Init.NoDivider = SAI_MASTERDIVIDER_ENABLED;
phungductung	0:4e245f4bc8ac	1318	haudio_in_sai.Init.Protocol = SAI_FREE_PROTOCOL;
phungductung	0:4e245f4bc8ac	1319	haudio_in_sai.Init.DataSize = SAI_DATASIZE_16;
phungductung	0:4e245f4bc8ac	1320	haudio_in_sai.Init.FirstBit = SAI_FIRSTBIT_MSB;
phungductung	0:4e245f4bc8ac	1321	haudio_in_sai.Init.ClockStrobing = SAI_CLOCKSTROBING_RISINGEDGE;
phungductung	0:4e245f4bc8ac	1322	haudio_in_sai.Init.Synchro = SAI_SYNCHRONOUS;
phungductung	0:4e245f4bc8ac	1323	haudio_in_sai.Init.OutputDrive = SAI_OUTPUTDRIVE_DISABLED;
phungductung	0:4e245f4bc8ac	1324	haudio_in_sai.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_1QF;
phungductung	0:4e245f4bc8ac	1325
phungductung	0:4e245f4bc8ac	1326	/* Configure SAI_Block_x Frame
phungductung	0:4e245f4bc8ac	1327	Frame Length: 64
phungductung	0:4e245f4bc8ac	1328	Frame active Length: 32
phungductung	0:4e245f4bc8ac	1329	FS Definition: Start frame + Channel Side identification
phungductung	0:4e245f4bc8ac	1330	FS Polarity: FS active Low
phungductung	0:4e245f4bc8ac	1331	FS Offset: FS asserted one bit before the first bit of slot 0 */
phungductung	0:4e245f4bc8ac	1332	haudio_in_sai.FrameInit.FrameLength = 64;
phungductung	0:4e245f4bc8ac	1333	haudio_in_sai.FrameInit.ActiveFrameLength = 32;
phungductung	0:4e245f4bc8ac	1334	haudio_in_sai.FrameInit.FSDefinition = SAI_FS_CHANNEL_IDENTIFICATION;
phungductung	0:4e245f4bc8ac	1335	haudio_in_sai.FrameInit.FSPolarity = SAI_FS_ACTIVE_LOW;
phungductung	0:4e245f4bc8ac	1336	haudio_in_sai.FrameInit.FSOffset = SAI_FS_BEFOREFIRSTBIT;
phungductung	0:4e245f4bc8ac	1337
phungductung	0:4e245f4bc8ac	1338	/* Configure SAI Block_x Slot
phungductung	0:4e245f4bc8ac	1339	Slot First Bit Offset: 0
phungductung	0:4e245f4bc8ac	1340	Slot Size : 16
phungductung	0:4e245f4bc8ac	1341	Slot Number: 4
phungductung	0:4e245f4bc8ac	1342	Slot Active: All slot active */
phungductung	0:4e245f4bc8ac	1343	haudio_in_sai.SlotInit.FirstBitOffset = 0;
phungductung	0:4e245f4bc8ac	1344	haudio_in_sai.SlotInit.SlotSize = SAI_SLOTSIZE_DATASIZE;
phungductung	0:4e245f4bc8ac	1345	haudio_in_sai.SlotInit.SlotNumber = 4;
phungductung	0:4e245f4bc8ac	1346	haudio_in_sai.SlotInit.SlotActive = SlotActive;
phungductung	0:4e245f4bc8ac	1347
phungductung	0:4e245f4bc8ac	1348	HAL_SAI_Init(&haudio_in_sai);
phungductung	0:4e245f4bc8ac	1349
phungductung	0:4e245f4bc8ac	1350	/* Enable SAI peripheral to generate MCLK */
phungductung	0:4e245f4bc8ac	1351	__HAL_SAI_ENABLE(&haudio_out_sai);
phungductung	0:4e245f4bc8ac	1352
phungductung	0:4e245f4bc8ac	1353	/* Enable SAI peripheral */
phungductung	0:4e245f4bc8ac	1354	__HAL_SAI_ENABLE(&haudio_in_sai);
phungductung	0:4e245f4bc8ac	1355	}
phungductung	0:4e245f4bc8ac	1356
phungductung	0:4e245f4bc8ac	1357
phungductung	0:4e245f4bc8ac	1358
phungductung	0:4e245f4bc8ac	1359	/**
phungductung	0:4e245f4bc8ac	1360	* @brief Deinitializes the output Audio Codec audio interface (SAI).
phungductung	0:4e245f4bc8ac	1361	* @retval None
phungductung	0:4e245f4bc8ac	1362	*/
phungductung	0:4e245f4bc8ac	1363	static void SAIx_In_DeInit(void)
phungductung	0:4e245f4bc8ac	1364	{
phungductung	0:4e245f4bc8ac	1365	/* Initialize the haudio_in_sai Instance parameter */
phungductung	0:4e245f4bc8ac	1366	haudio_in_sai.Instance = AUDIO_IN_SAIx;
phungductung	0:4e245f4bc8ac	1367
phungductung	0:4e245f4bc8ac	1368	/* Disable SAI peripheral */
phungductung	0:4e245f4bc8ac	1369	__HAL_SAI_DISABLE(&haudio_in_sai);
phungductung	0:4e245f4bc8ac	1370
phungductung	0:4e245f4bc8ac	1371	HAL_SAI_DeInit(&haudio_in_sai);
phungductung	0:4e245f4bc8ac	1372	}
phungductung	0:4e245f4bc8ac	1373
phungductung	0:4e245f4bc8ac	1374	#if ( __MBED__ == 1)
phungductung	0:4e245f4bc8ac	1375	/**
phungductung	0:4e245f4bc8ac	1376	* @brief This function handles External line 15_10 interrupt request.
phungductung	0:4e245f4bc8ac	1377	* @param None
phungductung	0:4e245f4bc8ac	1378	* @retval None
phungductung	0:4e245f4bc8ac	1379	*/
phungductung	0:4e245f4bc8ac	1380	static void AUDIO_IN_INT_IRQHandler(void)
phungductung	0:4e245f4bc8ac	1381	{
phungductung	0:4e245f4bc8ac	1382	/* Interrupt handler shared between SD_DETECT pin, USER_KEY button and touch screen interrupt */
phungductung	0:4e245f4bc8ac	1383	if (__HAL_GPIO_EXTI_GET_IT(AUDIO_IN_INT_GPIO_PIN) != RESET)
phungductung	0:4e245f4bc8ac	1384	{
phungductung	0:4e245f4bc8ac	1385	HAL_GPIO_EXTI_IRQHandler(AUDIO_IN_INT_GPIO_PIN); /* Audio Interrupt */
phungductung	0:4e245f4bc8ac	1386	}
phungductung	0:4e245f4bc8ac	1387	}
phungductung	0:4e245f4bc8ac	1388
phungductung	0:4e245f4bc8ac	1389	/**
phungductung	0:4e245f4bc8ac	1390	* @brief This function handles DMA2 Stream 7 interrupt request.
phungductung	0:4e245f4bc8ac	1391	* @param None
phungductung	0:4e245f4bc8ac	1392	* @retval None
phungductung	0:4e245f4bc8ac	1393	*/
phungductung	0:4e245f4bc8ac	1394	static void AUDIO_IN_SAIx_DMAx_IRQHandler(void)
phungductung	0:4e245f4bc8ac	1395	{
phungductung	0:4e245f4bc8ac	1396	HAL_DMA_IRQHandler(haudio_in_sai.hdmarx);
phungductung	0:4e245f4bc8ac	1397	}
phungductung	0:4e245f4bc8ac	1398
phungductung	0:4e245f4bc8ac	1399	/**
phungductung	0:4e245f4bc8ac	1400	* @brief This function handles DMA2 Stream 6 interrupt request.
phungductung	0:4e245f4bc8ac	1401	* @param None
phungductung	0:4e245f4bc8ac	1402	* @retval None
phungductung	0:4e245f4bc8ac	1403	*/
phungductung	0:4e245f4bc8ac	1404	static void AUDIO_OUT_SAIx_DMAx_IRQHandler(void)
phungductung	0:4e245f4bc8ac	1405	{
phungductung	0:4e245f4bc8ac	1406	HAL_DMA_IRQHandler(haudio_out_sai.hdmatx);
phungductung	0:4e245f4bc8ac	1407	}
phungductung	0:4e245f4bc8ac	1408	#endif
phungductung	0:4e245f4bc8ac	1409
phungductung	0:4e245f4bc8ac	1410	/**
phungductung	0:4e245f4bc8ac	1411	* @}
phungductung	0:4e245f4bc8ac	1412	*/
phungductung	0:4e245f4bc8ac	1413
phungductung	0:4e245f4bc8ac	1414	/**
phungductung	0:4e245f4bc8ac	1415	* @}
phungductung	0:4e245f4bc8ac	1416	*/
phungductung	0:4e245f4bc8ac	1417
phungductung	0:4e245f4bc8ac	1418	/**
phungductung	0:4e245f4bc8ac	1419	* @}
phungductung	0:4e245f4bc8ac	1420	*/
phungductung	0:4e245f4bc8ac	1421
phungductung	0:4e245f4bc8ac	1422	/**
phungductung	0:4e245f4bc8ac	1423	* @}
phungductung	0:4e245f4bc8ac	1424	*/
phungductung	0:4e245f4bc8ac	1425
phungductung	0:4e245f4bc8ac	1426	/********************** (C) COPYRIGHT STMicroelectronics *END OF FILE**/

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Type:	Library
Created:	10 Jun 2019
Imports:	10
Forks:	0
Commits:	1
Dependents:	1
Dependencies:	0
Followers:	1

BSP_DISCO_F746NG/stm32746g_discovery_audio.c@0:4e245f4bc8ac, 2019-06-07 (annotated)

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