BSP_DISCO_F413ZH - Contains the BSP driver for the DISCO_F413ZH boar…

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Contains the BSP driver for the DISCO_F413ZH board.

Dependents: DISCO_F413ZH-LCD-demo DISCO_F413ZH-touch-screen-demo DISCO_F413ZH-SD-demo DISCO_F413ZH-PSRAM-demo ... more

Drivers/BSP/STM32F413H-Discovery/stm32f413h_discovery_audio.c@2:0f07a9ac06f7, 2017-05-23 (annotated)

Committer:: arostm
Date:: Tue May 23 11:03:57 2017 +0200
Revision:: 2:0f07a9ac06f7
Parent:: 0:4af3ca173992
Child:: 3:42b354f5069c

Add modifications in audio library

Who changed what in which revision?

User	Revision	Line number	New contents of line
arostm	0:4af3ca173992	1	/**
arostm	0:4af3ca173992	2	******************************************************************************
arostm	0:4af3ca173992	3	* @file STM32f413h_discovery_audio.c
arostm	0:4af3ca173992	4	* @author MCD Application Team
arostm	0:4af3ca173992	5	* @version V1.0.0
arostm	0:4af3ca173992	6	* @date 27-January-2017
arostm	0:4af3ca173992	7	* @brief This file provides the Audio driver for the STM32F413H-DISCOVERY board.
arostm	0:4af3ca173992	8	******************************************************************************
arostm	0:4af3ca173992	9	* @attention
arostm	0:4af3ca173992	10	*
arostm	0:4af3ca173992	11	* <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
arostm	0:4af3ca173992	12	*
arostm	0:4af3ca173992	13	* Redistribution and use in source and binary forms, with or without modification,
arostm	0:4af3ca173992	14	* are permitted provided that the following conditions are met:
arostm	0:4af3ca173992	15	* 1. Redistributions of source code must retain the above copyright notice,
arostm	0:4af3ca173992	16	* this list of conditions and the following disclaimer.
arostm	0:4af3ca173992	17	* 2. Redistributions in binary form must reproduce the above copyright notice,
arostm	0:4af3ca173992	18	* this list of conditions and the following disclaimer in the documentation
arostm	0:4af3ca173992	19	* and/or other materials provided with the distribution.
arostm	0:4af3ca173992	20	* 3. Neither the name of STMicroelectronics nor the names of its contributors
arostm	0:4af3ca173992	21	* may be used to endorse or promote products derived from this software
arostm	0:4af3ca173992	22	* without specific prior written permission.
arostm	0:4af3ca173992	23	*
arostm	0:4af3ca173992	24	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
arostm	0:4af3ca173992	25	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
arostm	0:4af3ca173992	26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
arostm	0:4af3ca173992	27	* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
arostm	0:4af3ca173992	28	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
arostm	0:4af3ca173992	29	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
arostm	0:4af3ca173992	30	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
arostm	0:4af3ca173992	31	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
arostm	0:4af3ca173992	32	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
arostm	0:4af3ca173992	33	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
arostm	0:4af3ca173992	34	*
arostm	0:4af3ca173992	35	******************************************************************************
arostm	0:4af3ca173992	36	*/
arostm	0:4af3ca173992	37
arostm	0:4af3ca173992	38	/*==============================================================================
arostm	0:4af3ca173992	39	User NOTES
arostm	0:4af3ca173992	40
arostm	0:4af3ca173992	41	How To use this driver:
arostm	0:4af3ca173992	42	-----------------------
arostm	0:4af3ca173992	43	+ This driver supports STM32F4xx devices on STM32F413H-DISCOVERY boards.
arostm	0:4af3ca173992	44	+ Call the function BSP_AUDIO_OUT_Init(
arostm	0:4af3ca173992	45	OutputDevice: physical output mode (OUTPUT_DEVICE_SPEAKER,
arostm	0:4af3ca173992	46	OUTPUT_DEVICE_HEADPHONE or OUTPUT_DEVICE_BOTH)
arostm	0:4af3ca173992	47	Volume : Initial volume to be set (0 is min (mute), 100 is max (100%)
arostm	0:4af3ca173992	48	AudioFreq : Audio frequency in Hz (8000, 16000, 22500, 32000...)
arostm	0:4af3ca173992	49	this parameter is relative to the audio file/stream type.
arostm	0:4af3ca173992	50	)
arostm	0:4af3ca173992	51	This function configures all the hardware required for the audio application (codec, I2C, I2S,
arostm	0:4af3ca173992	52	GPIOs, DMA and interrupt if needed). This function returns AUDIO_OK if configuration is OK.
arostm	0:4af3ca173992	53	If the returned value is different from AUDIO_OK or the function is stuck then the communication with
arostm	0:4af3ca173992	54	the codec has failed (try to un-plug the power or reset device in this case).
arostm	0:4af3ca173992	55	- OUTPUT_DEVICE_SPEAKER : only speaker will be set as output for the audio stream.
arostm	0:4af3ca173992	56	- OUTPUT_DEVICE_HEADPHONE: only headphones will be set as output for the audio stream.
arostm	0:4af3ca173992	57	- OUTPUT_DEVICE_BOTH : both Speaker and Headphone are used as outputs for the audio stream
arostm	0:4af3ca173992	58	at the same time.
arostm	0:4af3ca173992	59	+ Call the function BSP_AUDIO_OUT_Play(
arostm	0:4af3ca173992	60	pBuffer: pointer to the audio data file address
arostm	0:4af3ca173992	61	Size : size of the buffer to be sent in Bytes
arostm	0:4af3ca173992	62	)
arostm	0:4af3ca173992	63	to start playing (for the first time) from the audio file/stream.
arostm	0:4af3ca173992	64	+ Call the function BSP_AUDIO_OUT_Pause() to pause playing
arostm	0:4af3ca173992	65	+ Call the function BSP_AUDIO_OUT_Resume() to resume playing.
arostm	0:4af3ca173992	66	Note. After calling BSP_AUDIO_OUT_Pause() function for pause, only BSP_AUDIO_OUT_Resume() should be called
arostm	0:4af3ca173992	67	for resume (it is not allowed to call BSP_AUDIO_OUT_Play() in this case).
arostm	0:4af3ca173992	68	Note. This function should be called only when the audio file is played or paused (not stopped).
arostm	0:4af3ca173992	69	+ For each mode, you may need to implement the relative callback functions into your code.
arostm	0:4af3ca173992	70	The Callback functions are named AUDIO_OUT_XXX_CallBack() and only their prototypes are declared in
arostm	0:4af3ca173992	71	the STM32F413H_discovery_audio.h file. (refer to the example for more details on the callbacks implementations)
arostm	0:4af3ca173992	72	+ To Stop playing, to modify the volume level, the frequency, use the functions: BSP_AUDIO_OUT_SetVolume(),
arostm	0:4af3ca173992	73	AUDIO_OUT_SetFrequency(), BSP_AUDIO_OUT_SetOutputMode(), BSP_AUDIO_OUT_SetMute() and BSP_AUDIO_OUT_Stop().
arostm	0:4af3ca173992	74	+ The driver API and the callback functions are at the end of the STM32F413H_discovery_audio.h file.
arostm	0:4af3ca173992	75
arostm	0:4af3ca173992	76
arostm	0:4af3ca173992	77	Driver architecture:
arostm	0:4af3ca173992	78	--------------------
arostm	0:4af3ca173992	79	+ This driver provides the High Audio Layer: consists of the function API exported in the stm32f413h_discovery_audio.h file
arostm	0:4af3ca173992	80	(BSP_AUDIO_OUT_Init(), BSP_AUDIO_OUT_Play() ...)
arostm	0:4af3ca173992	81	+ This driver provide also the Media Access Layer (MAL): which consists of functions allowing to access the media containing/
arostm	0:4af3ca173992	82	providing the audio file/stream. These functions are also included as local functions into
arostm	0:4af3ca173992	83	the stm32f413h_discovery_audio_codec.c file (I2Sx_Out_Init(), I2Sx_Out_DeInit(), I2Sx_In_Init() and I2Sx_In_DeInit())
arostm	0:4af3ca173992	84
arostm	0:4af3ca173992	85	Known Limitations:
arostm	0:4af3ca173992	86	------------------
arostm	0:4af3ca173992	87	1- If the TDM Format used to play in parallel 2 audio Stream (the first Stream is configured in codec SLOT0 and second
arostm	0:4af3ca173992	88	Stream in SLOT1) the Pause/Resume, volume and mute feature will control the both streams.
arostm	0:4af3ca173992	89	2- Parsing of audio file is not implemented (in order to determine audio file properties: Mono/Stereo, Data size,
arostm	0:4af3ca173992	90	File size, Audio Frequency, Audio Data header size ...). The configuration is fixed for the given audio file.
arostm	0:4af3ca173992	91	3- Supports only Stereo audio streaming.
arostm	0:4af3ca173992	92	4- Supports only 16-bits audio data size.
arostm	0:4af3ca173992	93	==============================================================================*/
arostm	0:4af3ca173992	94
arostm	0:4af3ca173992	95	/* Includes ------------------------------------------------------------------*/
arostm	0:4af3ca173992	96	#include "stm32f413h_discovery_audio.h"
arostm	0:4af3ca173992	97
arostm	0:4af3ca173992	98	/** @addtogroup BSP
arostm	0:4af3ca173992	99	* @{
arostm	0:4af3ca173992	100	*/
arostm	0:4af3ca173992	101
arostm	0:4af3ca173992	102	/** @addtogroup STM32F413H_DISCOVERY
arostm	0:4af3ca173992	103	* @{
arostm	0:4af3ca173992	104	*/
arostm	0:4af3ca173992	105
arostm	0:4af3ca173992	106	/** @defgroup STM32F413H_DISCOVERY_AUDIO STM32F413H_DISCOVERY AUDIO
arostm	0:4af3ca173992	107	* @brief This file includes the low layer driver for wm8994 Audio Codec
arostm	0:4af3ca173992	108	* available on STM32F413H-DISCOVERY board(MB1209).
arostm	0:4af3ca173992	109	* @{
arostm	0:4af3ca173992	110	*/
arostm	0:4af3ca173992	111
arostm	0:4af3ca173992	112	/** @defgroup STM32F413H_DISCOVERY_AUDIO_Private_Macros STM32F413H DISCOVERY Audio Private macros
arostm	0:4af3ca173992	113	* @{
arostm	0:4af3ca173992	114	*/
arostm	0:4af3ca173992	115
arostm	0:4af3ca173992	116	#define DFSDM_OVER_SAMPLING(__FREQUENCY__) \
arostm	0:4af3ca173992	117	(__FREQUENCY__ == AUDIO_FREQUENCY_8K) ? 256 \
arostm	0:4af3ca173992	118	: (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? 256 \
arostm	0:4af3ca173992	119	: (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? 128 \
arostm	0:4af3ca173992	120	: (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? 128 \
arostm	0:4af3ca173992	121	: (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? 64 \
arostm	0:4af3ca173992	122	: (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? 64 \
arostm	0:4af3ca173992	123	: (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? 32 : 25 \
arostm	0:4af3ca173992	124
arostm	0:4af3ca173992	125	#define DFSDM_CLOCK_DIVIDER(__FREQUENCY__) \
arostm	0:4af3ca173992	126	(__FREQUENCY__ == AUDIO_FREQUENCY_8K) ? 24 \
arostm	0:4af3ca173992	127	: (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? 48 \
arostm	0:4af3ca173992	128	: (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? 24 \
arostm	0:4af3ca173992	129	: (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? 48 \
arostm	0:4af3ca173992	130	: (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? 24 \
arostm	0:4af3ca173992	131	: (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? 48 \
arostm	0:4af3ca173992	132	: (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? 32 : 72 \
arostm	0:4af3ca173992	133
arostm	0:4af3ca173992	134	#define DFSDM_FILTER_ORDER(__FREQUENCY__) \
arostm	0:4af3ca173992	135	(__FREQUENCY__ == AUDIO_FREQUENCY_8K) ? DFSDM_FILTER_SINC3_ORDER \
arostm	0:4af3ca173992	136	: (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? DFSDM_FILTER_SINC3_ORDER \
arostm	0:4af3ca173992	137	: (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? DFSDM_FILTER_SINC3_ORDER \
arostm	0:4af3ca173992	138	: (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? DFSDM_FILTER_SINC3_ORDER \
arostm	0:4af3ca173992	139	: (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? DFSDM_FILTER_SINC4_ORDER \
arostm	0:4af3ca173992	140	: (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? DFSDM_FILTER_SINC4_ORDER \
arostm	0:4af3ca173992	141	: (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? DFSDM_FILTER_SINC4_ORDER : DFSDM_FILTER_SINC4_ORDER \
arostm	0:4af3ca173992	142
arostm	0:4af3ca173992	143	#define DFSDM_MIC_BIT_SHIFT(__FREQUENCY__) \
arostm	0:4af3ca173992	144	(__FREQUENCY__ == AUDIO_FREQUENCY_8K) ? 5 \
arostm	0:4af3ca173992	145	: (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? 4 \
arostm	0:4af3ca173992	146	: (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? 2 \
arostm	0:4af3ca173992	147	: (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? 2 \
arostm	0:4af3ca173992	148	: (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? 5 \
arostm	0:4af3ca173992	149	: (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? 6 \
arostm	0:4af3ca173992	150	: (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? 2 : 0 \
arostm	0:4af3ca173992	151
arostm	0:4af3ca173992	152	/* Saturate the record PCM sample */
arostm	0:4af3ca173992	153	#define SaturaLH(N, L, H) (((N)<(L))?(L):(((N)>(H))?(H):(N)))
arostm	0:4af3ca173992	154	/**
arostm	0:4af3ca173992	155	* @}
arostm	0:4af3ca173992	156	*/
arostm	0:4af3ca173992	157
arostm	0:4af3ca173992	158	/** @defgroup STM32F413H_DISCOVERY_AUDIO_Private_Variables STM32F413H DISCOVERY Audio Private Variables
arostm	0:4af3ca173992	159	* @{
arostm	0:4af3ca173992	160	*/
arostm	0:4af3ca173992	161
arostm	0:4af3ca173992	162	AUDIO_DrvTypeDef *audio_drv;
arostm	0:4af3ca173992	163	I2S_HandleTypeDef haudio_i2s; /* for Audio_OUT and Audio_IN_analog mic */
arostm	0:4af3ca173992	164	I2S_HandleTypeDef haudio_in_i2sext; /* for Analog mic with full duplex mode */
arostm	0:4af3ca173992	165	AUDIOIN_ContextTypeDef hAudioIn;
arostm	0:4af3ca173992	166
arostm	0:4af3ca173992	167	DFSDM_Channel_HandleTypeDef hAudioInDfsdmChannel[DFSDM_MIC_NUMBER]; /* 5 DFSDM channel handle used for all microphones */
arostm	0:4af3ca173992	168	DFSDM_Filter_HandleTypeDef hAudioInDfsdmFilter[DFSDM_MIC_NUMBER]; /* 5 DFSDM filter handle */
arostm	0:4af3ca173992	169	DMA_HandleTypeDef hDmaDfsdm[DFSDM_MIC_NUMBER]; /* 5 DMA handle used for DFSDM regular conversions */
arostm	0:4af3ca173992	170
arostm	0:4af3ca173992	171	/* Buffers for right and left samples */
arostm	0:4af3ca173992	172	int32_t *pScratchBuff[DEFAULT_AUDIO_IN_CHANNEL_NBR];
arostm	2:0f07a9ac06f7	173	uint32_t ScratchSize;
arostm	0:4af3ca173992	174
arostm	0:4af3ca173992	175	uint32_t DmaRecHalfBuffCplt[DFSDM_MIC_NUMBER] = {0};
arostm	0:4af3ca173992	176	uint32_t DmaRecBuffCplt[DFSDM_MIC_NUMBER] = {0};
arostm	0:4af3ca173992	177
arostm	0:4af3ca173992	178	/* Application Buffer Trigger */
arostm	0:4af3ca173992	179	__IO uint32_t AppBuffTrigger = 0;
arostm	0:4af3ca173992	180	__IO uint32_t AppBuffHalf = 0;
arostm	0:4af3ca173992	181	__IO uint32_t MicBuff[DFSDM_MIC_NUMBER] = {0};
arostm	0:4af3ca173992	182	__IO uint16_t AudioInVolume = DEFAULT_AUDIO_IN_VOLUME;
arostm	0:4af3ca173992	183
arostm	0:4af3ca173992	184	/**
arostm	0:4af3ca173992	185	* @}
arostm	0:4af3ca173992	186	*/
arostm	0:4af3ca173992	187
arostm	0:4af3ca173992	188	/** @defgroup STM32F413H_DISCOVERY_AUDIO_Private_Function_Prototypes STM32F413H DISCOVERY Audio Private Prototypes
arostm	0:4af3ca173992	189	* @{
arostm	0:4af3ca173992	190	*/
arostm	0:4af3ca173992	191	static void I2Sx_In_Init(uint32_t AudioFreq);
arostm	0:4af3ca173992	192	static void I2Sx_In_DeInit(void);
arostm	0:4af3ca173992	193	static void I2Sx_In_MspInit(void);
arostm	0:4af3ca173992	194	static void I2Sx_In_MspDeInit(void);
arostm	0:4af3ca173992	195
arostm	0:4af3ca173992	196	static void I2Sx_Out_Init(uint32_t AudioFreq);
arostm	0:4af3ca173992	197	static void I2Sx_Out_DeInit(void);
arostm	0:4af3ca173992	198
arostm	0:4af3ca173992	199	static uint8_t DFSDMx_DeInit(void);
arostm	0:4af3ca173992	200	static void DFSDMx_ChannelMspInit(void);
arostm	0:4af3ca173992	201	static void DFSDMx_ChannelMspDeInit(void);
arostm	0:4af3ca173992	202	static void DFSDMx_FilterMspInit(void);
arostm	0:4af3ca173992	203	static void DFSDMx_FilterMspDeInit(void);
arostm	0:4af3ca173992	204
arostm	0:4af3ca173992	205	/**
arostm	0:4af3ca173992	206	* @}
arostm	0:4af3ca173992	207	*/
arostm	0:4af3ca173992	208
arostm	0:4af3ca173992	209	/** @defgroup STM32F413H_DISCOVERY_AUDIO_out_Private_Functions STM32F413H DISCOVERY AUDIO OUT Private Functions
arostm	0:4af3ca173992	210	* @{
arostm	0:4af3ca173992	211	*/
arostm	0:4af3ca173992	212
arostm	0:4af3ca173992	213	/**
arostm	0:4af3ca173992	214	* @brief Configures the audio peripherals.
arostm	0:4af3ca173992	215	* @param OutputDevice: OUTPUT_DEVICE_SPEAKER, OUTPUT_DEVICE_HEADPHONE,
arostm	0:4af3ca173992	216	* or OUTPUT_DEVICE_BOTH.
arostm	0:4af3ca173992	217	* @param Volume: Initial volume level (from 0 (Mute) to 100 (Max))
arostm	0:4af3ca173992	218	* @param AudioFreq: Audio frequency used to play the audio stream.
arostm	0:4af3ca173992	219	* @note The I2S PLL input clock must be done in the user application.
arostm	0:4af3ca173992	220	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	221	*/
arostm	0:4af3ca173992	222	uint8_t BSP_AUDIO_OUT_Init(uint16_t OutputDevice, uint8_t Volume, uint32_t AudioFreq)
arostm	0:4af3ca173992	223	{
arostm	0:4af3ca173992	224	uint8_t ret = AUDIO_ERROR;
arostm	0:4af3ca173992	225	uint32_t deviceid = 0x00;
arostm	0:4af3ca173992	226	uint16_t buffer_fake[16] = {0x00};
arostm	0:4af3ca173992	227
arostm	0:4af3ca173992	228	I2Sx_Out_DeInit();
arostm	0:4af3ca173992	229	AUDIO_IO_DeInit();
arostm	0:4af3ca173992	230
arostm	0:4af3ca173992	231	/* PLL clock is set depending on the AudioFreq (44.1 kHz vs 48kHz groups) */
arostm	0:4af3ca173992	232	BSP_AUDIO_OUT_ClockConfig(&haudio_i2s, AudioFreq, NULL);
arostm	0:4af3ca173992	233
arostm	0:4af3ca173992	234	/* Configure the I2S peripheral */
arostm	0:4af3ca173992	235	haudio_i2s.Instance = AUDIO_OUT_I2Sx;
arostm	0:4af3ca173992	236	if(HAL_I2S_GetState(&haudio_i2s) == HAL_I2S_STATE_RESET)
arostm	0:4af3ca173992	237	{
arostm	0:4af3ca173992	238	/* Initialize the I2S Msp: this __weak function can be rewritten by the application */
arostm	0:4af3ca173992	239	BSP_AUDIO_OUT_MspInit(&haudio_i2s, NULL);
arostm	0:4af3ca173992	240	}
arostm	0:4af3ca173992	241	I2Sx_Out_Init(AudioFreq);
arostm	0:4af3ca173992	242
arostm	0:4af3ca173992	243	AUDIO_IO_Init();
arostm	0:4af3ca173992	244
arostm	0:4af3ca173992	245	/* wm8994 codec initialization */
arostm	0:4af3ca173992	246	deviceid = wm8994_drv.ReadID(AUDIO_I2C_ADDRESS);
arostm	0:4af3ca173992	247
arostm	0:4af3ca173992	248	if(deviceid == WM8994_ID)
arostm	0:4af3ca173992	249	{
arostm	0:4af3ca173992	250	/* Reset the Codec Registers */
arostm	0:4af3ca173992	251	wm8994_drv.Reset(AUDIO_I2C_ADDRESS);
arostm	0:4af3ca173992	252	/* Initialize the audio driver structure */
arostm	0:4af3ca173992	253	audio_drv = &wm8994_drv;
arostm	0:4af3ca173992	254	ret = AUDIO_OK;
arostm	0:4af3ca173992	255	}
arostm	0:4af3ca173992	256	else
arostm	0:4af3ca173992	257	{
arostm	0:4af3ca173992	258	ret = AUDIO_ERROR;
arostm	0:4af3ca173992	259	}
arostm	0:4af3ca173992	260
arostm	0:4af3ca173992	261	if(ret == AUDIO_OK)
arostm	0:4af3ca173992	262	{
arostm	0:4af3ca173992	263	/* Send fake I2S data in order to generate MCLK needed by WM8994 to set its registers
arostm	0:4af3ca173992	264	* MCLK is generated only when a data stream is sent on I2S */
arostm	0:4af3ca173992	265	HAL_I2S_Transmit_DMA(&haudio_i2s, buffer_fake, 16);
arostm	0:4af3ca173992	266	/* Initialize the codec internal registers */
arostm	0:4af3ca173992	267	audio_drv->Init(AUDIO_I2C_ADDRESS, OutputDevice, Volume, AudioFreq);
arostm	0:4af3ca173992	268	/* Stop sending fake I2S data */
arostm	0:4af3ca173992	269	HAL_I2S_DMAStop(&haudio_i2s);
arostm	0:4af3ca173992	270	}
arostm	0:4af3ca173992	271
arostm	0:4af3ca173992	272	return ret;
arostm	0:4af3ca173992	273	}
arostm	0:4af3ca173992	274
arostm	0:4af3ca173992	275	/**
arostm	0:4af3ca173992	276	* @brief Starts playing audio stream from a data buffer for a determined size.
arostm	0:4af3ca173992	277	* @param pBuffer: Pointer to the buffer
arostm	0:4af3ca173992	278	* @param Size: Number of audio data BYTES.
arostm	0:4af3ca173992	279	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	280	*/
arostm	0:4af3ca173992	281	uint8_t BSP_AUDIO_OUT_Play(uint16_t* pBuffer, uint32_t Size)
arostm	0:4af3ca173992	282	{
arostm	0:4af3ca173992	283	/* Call the audio Codec Play function */
arostm	0:4af3ca173992	284	if(audio_drv->Play(AUDIO_I2C_ADDRESS, pBuffer, Size) != 0)
arostm	0:4af3ca173992	285	{
arostm	0:4af3ca173992	286	return AUDIO_ERROR;
arostm	0:4af3ca173992	287	}
arostm	0:4af3ca173992	288	else
arostm	0:4af3ca173992	289	{
arostm	0:4af3ca173992	290	/* Update the Media layer and enable it for play */
arostm	0:4af3ca173992	291	HAL_I2S_Transmit_DMA(&haudio_i2s, pBuffer, DMA_MAX(Size / AUDIODATA_SIZE));
arostm	0:4af3ca173992	292
arostm	0:4af3ca173992	293	return AUDIO_OK;
arostm	0:4af3ca173992	294	}
arostm	0:4af3ca173992	295	}
arostm	0:4af3ca173992	296
arostm	0:4af3ca173992	297	/**
arostm	0:4af3ca173992	298	* @brief Sends n-Bytes on the I2S interface.
arostm	0:4af3ca173992	299	* @param pData: pointer on data address
arostm	0:4af3ca173992	300	* @param Size: number of data to be written
arostm	0:4af3ca173992	301	*/
arostm	0:4af3ca173992	302	void BSP_AUDIO_OUT_ChangeBuffer(uint16_t *pData, uint16_t Size)
arostm	0:4af3ca173992	303	{
arostm	0:4af3ca173992	304	HAL_I2S_Transmit_DMA(&haudio_i2s, pData, Size);
arostm	0:4af3ca173992	305	}
arostm	0:4af3ca173992	306
arostm	0:4af3ca173992	307	/**
arostm	0:4af3ca173992	308	* @brief This function Pauses the audio file stream. In case
arostm	0:4af3ca173992	309	* of using DMA, the DMA Pause feature is used.
arostm	0:4af3ca173992	310	* @note When calling BSP_AUDIO_OUT_Pause() function for pause, only
arostm	0:4af3ca173992	311	* BSP_AUDIO_OUT_Resume() function should be called for resume (use of BSP_AUDIO_OUT_Play()
arostm	0:4af3ca173992	312	* function for resume could lead to unexpected behavior).
arostm	0:4af3ca173992	313	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	314	*/
arostm	0:4af3ca173992	315	uint8_t BSP_AUDIO_OUT_Pause(void)
arostm	0:4af3ca173992	316	{
arostm	0:4af3ca173992	317	/* Call the Audio Codec Pause/Resume function */
arostm	0:4af3ca173992	318	if(audio_drv->Pause(AUDIO_I2C_ADDRESS) != 0)
arostm	0:4af3ca173992	319	{
arostm	0:4af3ca173992	320	return AUDIO_ERROR;
arostm	0:4af3ca173992	321	}
arostm	0:4af3ca173992	322	else
arostm	0:4af3ca173992	323	{
arostm	0:4af3ca173992	324	/* Call the Media layer pause function */
arostm	0:4af3ca173992	325	HAL_I2S_DMAPause(&haudio_i2s);
arostm	0:4af3ca173992	326
arostm	0:4af3ca173992	327	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	328	return AUDIO_OK;
arostm	0:4af3ca173992	329	}
arostm	0:4af3ca173992	330	}
arostm	0:4af3ca173992	331
arostm	0:4af3ca173992	332	/**
arostm	0:4af3ca173992	333	* @brief This function Resumes the audio file stream.
arostm	0:4af3ca173992	334	* @note When calling BSP_AUDIO_OUT_Pause() function for pause, only
arostm	0:4af3ca173992	335	* BSP_AUDIO_OUT_Resume() function should be called for resume (use of BSP_AUDIO_OUT_Play()
arostm	0:4af3ca173992	336	* function for resume could lead to unexpected behavior).
arostm	0:4af3ca173992	337	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	338	*/
arostm	0:4af3ca173992	339	uint8_t BSP_AUDIO_OUT_Resume(void)
arostm	0:4af3ca173992	340	{
arostm	0:4af3ca173992	341	/* Call the Media layer pause/resume function */
arostm	0:4af3ca173992	342	/* DMA stream resumed before accessing WM8994 register as WM8994 needs the MCLK to be generated to access its registers
arostm	0:4af3ca173992	343	* MCLK is generated only when a data stream is sent on I2S */
arostm	0:4af3ca173992	344	HAL_I2S_DMAResume(&haudio_i2s);
arostm	0:4af3ca173992	345
arostm	0:4af3ca173992	346	/* Call the Audio Codec Pause/Resume function */
arostm	0:4af3ca173992	347	if(audio_drv->Resume(AUDIO_I2C_ADDRESS) != 0)
arostm	0:4af3ca173992	348	{
arostm	0:4af3ca173992	349	return AUDIO_ERROR;
arostm	0:4af3ca173992	350	}
arostm	0:4af3ca173992	351	else
arostm	0:4af3ca173992	352	{
arostm	0:4af3ca173992	353	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	354	return AUDIO_OK;
arostm	0:4af3ca173992	355	}
arostm	0:4af3ca173992	356	}
arostm	0:4af3ca173992	357
arostm	0:4af3ca173992	358	/**
arostm	0:4af3ca173992	359	* @brief Stops audio playing and Power down the Audio Codec.
arostm	0:4af3ca173992	360	* @param Option: could be one of the following parameters
arostm	0:4af3ca173992	361	* - CODEC_PDWN_SW: for software power off (by writing registers).
arostm	0:4af3ca173992	362	* Then no need to reconfigure the Codec after power on.
arostm	0:4af3ca173992	363	* - CODEC_PDWN_HW: completely shut down the codec (physically).
arostm	0:4af3ca173992	364	* Then need to reconfigure the Codec after power on.
arostm	0:4af3ca173992	365	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	366	*/
arostm	0:4af3ca173992	367	uint8_t BSP_AUDIO_OUT_Stop(uint32_t Option)
arostm	0:4af3ca173992	368	{
arostm	0:4af3ca173992	369	/* Call the Media layer stop function */
arostm	0:4af3ca173992	370	HAL_I2S_DMAStop(&haudio_i2s);
arostm	0:4af3ca173992	371
arostm	0:4af3ca173992	372	/* Call Audio Codec Stop function */
arostm	0:4af3ca173992	373	if(audio_drv->Stop(AUDIO_I2C_ADDRESS, Option) != 0)
arostm	0:4af3ca173992	374	{
arostm	0:4af3ca173992	375	return AUDIO_ERROR;
arostm	0:4af3ca173992	376	}
arostm	0:4af3ca173992	377	else
arostm	0:4af3ca173992	378	{
arostm	0:4af3ca173992	379	if(Option == CODEC_PDWN_HW)
arostm	0:4af3ca173992	380	{
arostm	0:4af3ca173992	381	/* Wait at least 100us */
arostm	0:4af3ca173992	382	HAL_Delay(1);
arostm	0:4af3ca173992	383	}
arostm	0:4af3ca173992	384	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	385	return AUDIO_OK;
arostm	0:4af3ca173992	386	}
arostm	0:4af3ca173992	387	}
arostm	0:4af3ca173992	388
arostm	0:4af3ca173992	389	/**
arostm	0:4af3ca173992	390	* @brief Controls the current audio volume level.
arostm	0:4af3ca173992	391	* @param Volume: Volume level to be set in percentage from 0% to 100% (0 for
arostm	0:4af3ca173992	392	* Mute and 100 for Max volume level).
arostm	0:4af3ca173992	393	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	394	*/
arostm	0:4af3ca173992	395	uint8_t BSP_AUDIO_OUT_SetVolume(uint8_t Volume)
arostm	0:4af3ca173992	396	{
arostm	0:4af3ca173992	397	/* Call the codec volume control function with converted volume value */
arostm	0:4af3ca173992	398	if(audio_drv->SetVolume(AUDIO_I2C_ADDRESS, Volume) != 0)
arostm	0:4af3ca173992	399	{
arostm	0:4af3ca173992	400	return AUDIO_ERROR;
arostm	0:4af3ca173992	401	}
arostm	0:4af3ca173992	402	else
arostm	0:4af3ca173992	403	{
arostm	0:4af3ca173992	404	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	405	return AUDIO_OK;
arostm	0:4af3ca173992	406	}
arostm	0:4af3ca173992	407	}
arostm	0:4af3ca173992	408
arostm	0:4af3ca173992	409	/**
arostm	0:4af3ca173992	410	* @brief Enables or disables the MUTE mode by software
arostm	0:4af3ca173992	411	* @param Cmd: Could be AUDIO_MUTE_ON to mute sound or AUDIO_MUTE_OFF to
arostm	0:4af3ca173992	412	* unmute the codec and restore previous volume level.
arostm	0:4af3ca173992	413	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	414	*/
arostm	0:4af3ca173992	415	uint8_t BSP_AUDIO_OUT_SetMute(uint32_t Cmd)
arostm	0:4af3ca173992	416	{
arostm	0:4af3ca173992	417	/* Call the Codec Mute function */
arostm	0:4af3ca173992	418	if(audio_drv->SetMute(AUDIO_I2C_ADDRESS, Cmd) != 0)
arostm	0:4af3ca173992	419	{
arostm	0:4af3ca173992	420	return AUDIO_ERROR;
arostm	0:4af3ca173992	421	}
arostm	0:4af3ca173992	422	else
arostm	0:4af3ca173992	423	{
arostm	0:4af3ca173992	424	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	425	return AUDIO_OK;
arostm	0:4af3ca173992	426	}
arostm	0:4af3ca173992	427	}
arostm	0:4af3ca173992	428
arostm	0:4af3ca173992	429	/**
arostm	0:4af3ca173992	430	* @brief Switch dynamically (while audio file is played) the output target
arostm	0:4af3ca173992	431	* (speaker or headphone).
arostm	0:4af3ca173992	432	* @param Output: The audio output target: OUTPUT_DEVICE_SPEAKER,
arostm	0:4af3ca173992	433	* OUTPUT_DEVICE_HEADPHONE or OUTPUT_DEVICE_BOTH
arostm	0:4af3ca173992	434	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	435	*/
arostm	0:4af3ca173992	436	uint8_t BSP_AUDIO_OUT_SetOutputMode(uint8_t Output)
arostm	0:4af3ca173992	437	{
arostm	0:4af3ca173992	438	/* Call the Codec output device function */
arostm	0:4af3ca173992	439	if(audio_drv->SetOutputMode(AUDIO_I2C_ADDRESS, Output) != 0)
arostm	0:4af3ca173992	440	{
arostm	0:4af3ca173992	441	return AUDIO_ERROR;
arostm	0:4af3ca173992	442	}
arostm	0:4af3ca173992	443	else
arostm	0:4af3ca173992	444	{
arostm	0:4af3ca173992	445	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	446	return AUDIO_OK;
arostm	0:4af3ca173992	447	}
arostm	0:4af3ca173992	448	}
arostm	0:4af3ca173992	449
arostm	0:4af3ca173992	450	/**
arostm	0:4af3ca173992	451	* @brief Updates the audio frequency.
arostm	0:4af3ca173992	452	* @param AudioFreq: Audio frequency used to play the audio stream.
arostm	0:4af3ca173992	453	* @note This API should be called after the BSP_AUDIO_OUT_Init() to adjust the
arostm	0:4af3ca173992	454	* audio frequency.
arostm	0:4af3ca173992	455	* @retval None
arostm	0:4af3ca173992	456	*/
arostm	0:4af3ca173992	457	void BSP_AUDIO_OUT_SetFrequency(uint32_t AudioFreq)
arostm	0:4af3ca173992	458	{
arostm	0:4af3ca173992	459	/* PLL clock is set depending by the AudioFreq (44.1khz vs 48khz groups) */
arostm	0:4af3ca173992	460	BSP_AUDIO_OUT_ClockConfig(&haudio_i2s, AudioFreq, NULL);
arostm	0:4af3ca173992	461
arostm	0:4af3ca173992	462	/* Disable I2S peripheral to allow access to I2S internal registers */
arostm	0:4af3ca173992	463	__HAL_I2S_DISABLE(&haudio_i2s);
arostm	0:4af3ca173992	464
arostm	0:4af3ca173992	465	/* Update the I2S audio frequency configuration */
arostm	0:4af3ca173992	466	haudio_i2s.Init.AudioFreq = AudioFreq;
arostm	0:4af3ca173992	467	HAL_I2S_Init(&haudio_i2s);
arostm	0:4af3ca173992	468
arostm	0:4af3ca173992	469	/* Enable I2S peripheral to generate MCLK */
arostm	0:4af3ca173992	470	__HAL_I2S_ENABLE(&haudio_i2s);
arostm	0:4af3ca173992	471	}
arostm	0:4af3ca173992	472
arostm	0:4af3ca173992	473	/**
arostm	0:4af3ca173992	474	* @brief Deinit the audio peripherals.
arostm	0:4af3ca173992	475	*/
arostm	0:4af3ca173992	476	void BSP_AUDIO_OUT_DeInit(void)
arostm	0:4af3ca173992	477	{
arostm	0:4af3ca173992	478	I2Sx_Out_DeInit();
arostm	0:4af3ca173992	479	/* DeInit the I2S MSP : this __weak function can be rewritten by the application */
arostm	0:4af3ca173992	480	BSP_AUDIO_OUT_MspDeInit(&haudio_i2s, NULL);
arostm	0:4af3ca173992	481	}
arostm	0:4af3ca173992	482
arostm	0:4af3ca173992	483	/**
arostm	0:4af3ca173992	484	* @brief Tx Transfer completed callbacks.
arostm	0:4af3ca173992	485	* @param hi2s: I2S handle
arostm	0:4af3ca173992	486	*/
arostm	0:4af3ca173992	487	void HAL_I2S_TxCpltCallback(I2S_HandleTypeDef *hi2s)
arostm	0:4af3ca173992	488	{
arostm	0:4af3ca173992	489	/* Manage the remaining file size and new address offset: This function
arostm	0:4af3ca173992	490	should be coded by user (its prototype is already declared in STM32F413H_discovery_audio.h) */
arostm	0:4af3ca173992	491	BSP_AUDIO_OUT_TransferComplete_CallBack();
arostm	0:4af3ca173992	492	}
arostm	0:4af3ca173992	493
arostm	0:4af3ca173992	494	/**
arostm	0:4af3ca173992	495	* @brief Tx Half Transfer completed callbacks.
arostm	0:4af3ca173992	496	* @param hi2s: I2S handle
arostm	0:4af3ca173992	497	*/
arostm	0:4af3ca173992	498	void HAL_I2S_TxHalfCpltCallback(I2S_HandleTypeDef *hi2s)
arostm	0:4af3ca173992	499	{
arostm	0:4af3ca173992	500	/* Manage the remaining file size and new address offset: This function
arostm	0:4af3ca173992	501	should be coded by user (its prototype is already declared in STM32F413H_discovery_audio.h) */
arostm	0:4af3ca173992	502	BSP_AUDIO_OUT_HalfTransfer_CallBack();
arostm	0:4af3ca173992	503	}
arostm	0:4af3ca173992	504
arostm	0:4af3ca173992	505	/**
arostm	0:4af3ca173992	506	* @brief I2S error callbacks.
arostm	0:4af3ca173992	507	* @param hi2s: I2S handle
arostm	0:4af3ca173992	508	*/
arostm	0:4af3ca173992	509	void HAL_I2S_ErrorCallback(I2S_HandleTypeDef *hi2s)
arostm	0:4af3ca173992	510	{
arostm	0:4af3ca173992	511	BSP_AUDIO_OUT_Error_CallBack();
arostm	0:4af3ca173992	512	}
arostm	0:4af3ca173992	513
arostm	0:4af3ca173992	514	/**
arostm	0:4af3ca173992	515	* @brief Manages the DMA full Transfer complete event.
arostm	0:4af3ca173992	516	*/
arostm	0:4af3ca173992	517	__weak void BSP_AUDIO_OUT_TransferComplete_CallBack(void)
arostm	0:4af3ca173992	518	{
arostm	0:4af3ca173992	519	}
arostm	0:4af3ca173992	520
arostm	0:4af3ca173992	521	/**
arostm	0:4af3ca173992	522	* @brief Manages the DMA Half Transfer complete event.
arostm	0:4af3ca173992	523	*/
arostm	0:4af3ca173992	524	__weak void BSP_AUDIO_OUT_HalfTransfer_CallBack(void)
arostm	0:4af3ca173992	525	{
arostm	0:4af3ca173992	526	}
arostm	0:4af3ca173992	527
arostm	0:4af3ca173992	528	/**
arostm	0:4af3ca173992	529	* @brief Manages the DMA FIFO error event.
arostm	0:4af3ca173992	530	*/
arostm	0:4af3ca173992	531	__weak void BSP_AUDIO_OUT_Error_CallBack(void)
arostm	0:4af3ca173992	532	{
arostm	0:4af3ca173992	533	}
arostm	0:4af3ca173992	534
arostm	0:4af3ca173992	535	/**
arostm	0:4af3ca173992	536	* @brief Initializes BSP_AUDIO_OUT MSP.
arostm	0:4af3ca173992	537	* @param hi2s: I2S handle
arostm	0:4af3ca173992	538	* @param Params : pointer on additional configuration parameters, can be NULL.
arostm	0:4af3ca173992	539	*/
arostm	0:4af3ca173992	540	__weak void BSP_AUDIO_OUT_MspInit(I2S_HandleTypeDef hi2s, void Params)
arostm	0:4af3ca173992	541	{
arostm	0:4af3ca173992	542	static DMA_HandleTypeDef hdma_i2s_tx;
arostm	0:4af3ca173992	543	GPIO_InitTypeDef gpio_init_structure;
arostm	0:4af3ca173992	544
arostm	0:4af3ca173992	545	/* Prevent unused argument(s) compilation warning */
arostm	0:4af3ca173992	546	UNUSED(Params);
arostm	0:4af3ca173992	547
arostm	0:4af3ca173992	548	/* Enable I2S clock */
arostm	0:4af3ca173992	549	AUDIO_OUT_I2Sx_CLK_ENABLE();
arostm	0:4af3ca173992	550
arostm	0:4af3ca173992	551	/* Enable MCK, SCK, WS, SD and CODEC_INT GPIO clock */
arostm	0:4af3ca173992	552	AUDIO_OUT_I2Sx_MCK_GPIO_CLK_ENABLE();
arostm	0:4af3ca173992	553	AUDIO_OUT_I2Sx_SCK_GPIO_CLK_ENABLE();
arostm	0:4af3ca173992	554	AUDIO_OUT_I2Sx_SD_GPIO_CLK_ENABLE();
arostm	0:4af3ca173992	555	AUDIO_OUT_I2Sx_WS_GPIO_CLK_ENABLE();
arostm	0:4af3ca173992	556
arostm	0:4af3ca173992	557	/* CODEC_I2S pins configuration: MCK, SCK, WS and SD pins */
arostm	0:4af3ca173992	558	gpio_init_structure.Pin = AUDIO_OUT_I2Sx_MCK_PIN;
arostm	0:4af3ca173992	559	gpio_init_structure.Mode = GPIO_MODE_AF_PP;
arostm	0:4af3ca173992	560	gpio_init_structure.Pull = GPIO_NOPULL;
arostm	0:4af3ca173992	561	gpio_init_structure.Speed = GPIO_SPEED_FAST;
arostm	0:4af3ca173992	562	gpio_init_structure.Alternate = AUDIO_OUT_I2Sx_MCK_AF;
arostm	0:4af3ca173992	563	HAL_GPIO_Init(AUDIO_OUT_I2Sx_MCK_GPIO_PORT, &gpio_init_structure);
arostm	0:4af3ca173992	564
arostm	0:4af3ca173992	565	gpio_init_structure.Pin = AUDIO_OUT_I2Sx_SCK_PIN;
arostm	0:4af3ca173992	566	gpio_init_structure.Alternate = AUDIO_OUT_I2Sx_SCK_AF;
arostm	0:4af3ca173992	567	HAL_GPIO_Init(AUDIO_OUT_I2Sx_SCK_GPIO_PORT, &gpio_init_structure);
arostm	0:4af3ca173992	568
arostm	0:4af3ca173992	569	gpio_init_structure.Pin = AUDIO_OUT_I2Sx_WS_PIN;
arostm	0:4af3ca173992	570	gpio_init_structure.Alternate = AUDIO_OUT_I2Sx_WS_AF;
arostm	0:4af3ca173992	571	HAL_GPIO_Init(AUDIO_OUT_I2Sx_WS_GPIO_PORT, &gpio_init_structure);
arostm	0:4af3ca173992	572
arostm	0:4af3ca173992	573	gpio_init_structure.Pin = AUDIO_OUT_I2Sx_SD_PIN;
arostm	0:4af3ca173992	574	gpio_init_structure.Alternate = AUDIO_OUT_I2Sx_SD_AF;
arostm	0:4af3ca173992	575	HAL_GPIO_Init(AUDIO_OUT_I2Sx_SD_GPIO_PORT, &gpio_init_structure);
arostm	0:4af3ca173992	576
arostm	0:4af3ca173992	577	/* Enable the DMA clock */
arostm	0:4af3ca173992	578	AUDIO_OUT_I2Sx_DMAx_CLK_ENABLE();
arostm	0:4af3ca173992	579
arostm	0:4af3ca173992	580	if(hi2s->Instance == AUDIO_OUT_I2Sx)
arostm	0:4af3ca173992	581	{
arostm	0:4af3ca173992	582	/* Configure the hdma_i2s_rx handle parameters */
arostm	0:4af3ca173992	583	hdma_i2s_tx.Init.Channel = AUDIO_OUT_I2Sx_DMAx_CHANNEL;
arostm	0:4af3ca173992	584	hdma_i2s_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
arostm	0:4af3ca173992	585	hdma_i2s_tx.Init.PeriphInc = DMA_PINC_DISABLE;
arostm	0:4af3ca173992	586	hdma_i2s_tx.Init.MemInc = DMA_MINC_ENABLE;
arostm	0:4af3ca173992	587	hdma_i2s_tx.Init.PeriphDataAlignment = AUDIO_OUT_I2Sx_DMAx_PERIPH_DATA_SIZE;
arostm	0:4af3ca173992	588	hdma_i2s_tx.Init.MemDataAlignment = AUDIO_OUT_I2Sx_DMAx_MEM_DATA_SIZE;
arostm	0:4af3ca173992	589	hdma_i2s_tx.Init.Mode = DMA_CIRCULAR;
arostm	0:4af3ca173992	590	hdma_i2s_tx.Init.Priority = DMA_PRIORITY_HIGH;
arostm	0:4af3ca173992	591	hdma_i2s_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
arostm	0:4af3ca173992	592	hdma_i2s_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
arostm	0:4af3ca173992	593	hdma_i2s_tx.Init.MemBurst = DMA_MBURST_SINGLE;
arostm	0:4af3ca173992	594	hdma_i2s_tx.Init.PeriphBurst = DMA_MBURST_SINGLE;
arostm	0:4af3ca173992	595
arostm	0:4af3ca173992	596	hdma_i2s_tx.Instance = AUDIO_OUT_I2Sx_DMAx_STREAM;
arostm	0:4af3ca173992	597
arostm	0:4af3ca173992	598	/* Associate the DMA handle */
arostm	0:4af3ca173992	599	__HAL_LINKDMA(hi2s, hdmatx, hdma_i2s_tx);
arostm	0:4af3ca173992	600
arostm	0:4af3ca173992	601	/* Deinitialize the Stream for new transfer */
arostm	0:4af3ca173992	602	HAL_DMA_DeInit(&hdma_i2s_tx);
arostm	0:4af3ca173992	603
arostm	0:4af3ca173992	604	/* Configure the DMA Stream */
arostm	0:4af3ca173992	605	HAL_DMA_Init(&hdma_i2s_tx);
arostm	0:4af3ca173992	606	}
arostm	0:4af3ca173992	607
arostm	0:4af3ca173992	608	/* Enable and set I2Sx Interrupt to a lower priority */
arostm	0:4af3ca173992	609	HAL_NVIC_SetPriority(SPI3_IRQn, 0x0F, 0x00);
arostm	0:4af3ca173992	610	HAL_NVIC_EnableIRQ(SPI3_IRQn);
arostm	0:4af3ca173992	611
arostm	0:4af3ca173992	612	/* I2S DMA IRQ Channel configuration */
arostm	0:4af3ca173992	613	HAL_NVIC_SetPriority(AUDIO_OUT_I2Sx_DMAx_IRQ, AUDIO_OUT_IRQ_PREPRIO, 0);
arostm	0:4af3ca173992	614	HAL_NVIC_EnableIRQ(AUDIO_OUT_I2Sx_DMAx_IRQ);
arostm	0:4af3ca173992	615	}
arostm	0:4af3ca173992	616
arostm	0:4af3ca173992	617	/**
arostm	0:4af3ca173992	618	* @brief Deinitializes I2S MSP.
arostm	0:4af3ca173992	619	* @param hi2s: I2S handle
arostm	0:4af3ca173992	620	* @param Params : pointer on additional configuration parameters, can be NULL.
arostm	0:4af3ca173992	621	*/
arostm	0:4af3ca173992	622	__weak void BSP_AUDIO_OUT_MspDeInit(I2S_HandleTypeDef hi2s, void Params)
arostm	0:4af3ca173992	623	{
arostm	0:4af3ca173992	624	GPIO_InitTypeDef gpio_init_structure;
arostm	0:4af3ca173992	625
arostm	0:4af3ca173992	626	/* Prevent unused argument(s) compilation warning */
arostm	0:4af3ca173992	627	UNUSED(Params);
arostm	0:4af3ca173992	628
arostm	0:4af3ca173992	629	/* I2S DMA IRQ Channel deactivation */
arostm	0:4af3ca173992	630	HAL_NVIC_DisableIRQ(AUDIO_OUT_I2Sx_DMAx_IRQ);
arostm	0:4af3ca173992	631
arostm	0:4af3ca173992	632	if(hi2s->Instance == AUDIO_OUT_I2Sx)
arostm	0:4af3ca173992	633	{
arostm	0:4af3ca173992	634	/* Deinitialize the DMA stream */
arostm	0:4af3ca173992	635	HAL_DMA_DeInit(hi2s->hdmatx);
arostm	0:4af3ca173992	636	}
arostm	0:4af3ca173992	637
arostm	0:4af3ca173992	638	/* Disable I2S peripheral */
arostm	0:4af3ca173992	639	__HAL_I2S_DISABLE(hi2s);
arostm	0:4af3ca173992	640
arostm	0:4af3ca173992	641	/* Deactives CODEC_I2S pins MCK, SCK, WS and SD by putting them in input mode */
arostm	0:4af3ca173992	642	gpio_init_structure.Pin = AUDIO_OUT_I2Sx_MCK_PIN;
arostm	0:4af3ca173992	643	HAL_GPIO_DeInit(AUDIO_OUT_I2Sx_MCK_GPIO_PORT, gpio_init_structure.Pin);
arostm	0:4af3ca173992	644
arostm	0:4af3ca173992	645	gpio_init_structure.Pin = AUDIO_OUT_I2Sx_SCK_PIN;
arostm	0:4af3ca173992	646	HAL_GPIO_DeInit(AUDIO_OUT_I2Sx_SCK_GPIO_PORT, gpio_init_structure.Pin);
arostm	0:4af3ca173992	647
arostm	0:4af3ca173992	648	gpio_init_structure.Pin = AUDIO_OUT_I2Sx_WS_PIN;
arostm	0:4af3ca173992	649	HAL_GPIO_DeInit(AUDIO_OUT_I2Sx_WS_GPIO_PORT, gpio_init_structure.Pin);
arostm	0:4af3ca173992	650
arostm	0:4af3ca173992	651	gpio_init_structure.Pin = AUDIO_OUT_I2Sx_SD_PIN;
arostm	0:4af3ca173992	652	HAL_GPIO_DeInit(AUDIO_OUT_I2Sx_SD_GPIO_PORT, gpio_init_structure.Pin);
arostm	0:4af3ca173992	653
arostm	0:4af3ca173992	654	/* Disable I2S clock */
arostm	0:4af3ca173992	655	AUDIO_OUT_I2Sx_CLK_DISABLE();
arostm	0:4af3ca173992	656
arostm	0:4af3ca173992	657	/* GPIO pins clock and DMA clock can be shut down in the application
arostm	0:4af3ca173992	658	by surcharging this __weak function */
arostm	0:4af3ca173992	659	}
arostm	0:4af3ca173992	660
arostm	0:4af3ca173992	661	/**
arostm	0:4af3ca173992	662	* @brief Clock Config.
arostm	0:4af3ca173992	663	* @param hi2s: might be required to set audio peripheral predivider if any.
arostm	0:4af3ca173992	664	* @param AudioFreq: Audio frequency used to play the audio stream.
arostm	0:4af3ca173992	665	* @param Params : pointer on additional configuration parameters, can be NULL.
arostm	0:4af3ca173992	666	* @note This API is called by BSP_AUDIO_OUT_Init() and BSP_AUDIO_OUT_SetFrequency()
arostm	0:4af3ca173992	667	* Being __weak it can be overwritten by the application
arostm	0:4af3ca173992	668	*/
arostm	0:4af3ca173992	669	__weak void BSP_AUDIO_OUT_ClockConfig(I2S_HandleTypeDef hi2s, uint32_t AudioFreq, void Params)
arostm	0:4af3ca173992	670	{
arostm	0:4af3ca173992	671	RCC_PeriphCLKInitTypeDef rcc_ex_clk_init_struct;
arostm	0:4af3ca173992	672
arostm	0:4af3ca173992	673	/* Prevent unused argument(s) compilation warning */
arostm	0:4af3ca173992	674	UNUSED(Params);
arostm	0:4af3ca173992	675
arostm	0:4af3ca173992	676	HAL_RCCEx_GetPeriphCLKConfig(&rcc_ex_clk_init_struct);
arostm	0:4af3ca173992	677
arostm	0:4af3ca173992	678	/* Set the PLL configuration according to the audio frequency */
arostm	0:4af3ca173992	679	if((AudioFreq == AUDIO_FREQUENCY_11K) \|\| (AudioFreq == AUDIO_FREQUENCY_22K) \|\| (AudioFreq == AUDIO_FREQUENCY_44K))
arostm	0:4af3ca173992	680	{
arostm	0:4af3ca173992	681	/* Configure PLLI2S prescalers */
arostm	0:4af3ca173992	682	rcc_ex_clk_init_struct.PeriphClockSelection = (RCC_PERIPHCLK_I2S_APB1 \| RCC_PERIPHCLK_PLLI2S);
arostm	0:4af3ca173992	683	rcc_ex_clk_init_struct.I2sApb1ClockSelection = RCC_I2SAPB1CLKSOURCE_PLLI2S;
arostm	0:4af3ca173992	684	rcc_ex_clk_init_struct.PLLI2SSelection = RCC_PLLI2SCLKSOURCE_PLLSRC;
arostm	0:4af3ca173992	685	rcc_ex_clk_init_struct.PLLI2S.PLLI2SM = 8;
arostm	0:4af3ca173992	686	rcc_ex_clk_init_struct.PLLI2S.PLLI2SN = 271;
arostm	0:4af3ca173992	687	rcc_ex_clk_init_struct.PLLI2S.PLLI2SR = 2;
arostm	0:4af3ca173992	688
arostm	0:4af3ca173992	689	HAL_RCCEx_PeriphCLKConfig(&rcc_ex_clk_init_struct);
arostm	0:4af3ca173992	690	}
arostm	0:4af3ca173992	691	else if(AudioFreq == AUDIO_FREQUENCY_96K) /* AUDIO_FREQUENCY_96K */
arostm	0:4af3ca173992	692	{
arostm	0:4af3ca173992	693	/* I2S clock config */
arostm	0:4af3ca173992	694	rcc_ex_clk_init_struct.PeriphClockSelection = (RCC_PERIPHCLK_I2S_APB1 \| RCC_PERIPHCLK_PLLI2S);
arostm	0:4af3ca173992	695	rcc_ex_clk_init_struct.I2sApb1ClockSelection = RCC_I2SAPB1CLKSOURCE_PLLI2S;
arostm	0:4af3ca173992	696	rcc_ex_clk_init_struct.PLLI2SSelection = RCC_PLLI2SCLKSOURCE_PLLSRC;
arostm	0:4af3ca173992	697	rcc_ex_clk_init_struct.PLLI2S.PLLI2SM = 8;
arostm	0:4af3ca173992	698	rcc_ex_clk_init_struct.PLLI2S.PLLI2SN = 344;
arostm	0:4af3ca173992	699	rcc_ex_clk_init_struct.PLLI2S.PLLI2SR = 2;
arostm	0:4af3ca173992	700
arostm	0:4af3ca173992	701	HAL_RCCEx_PeriphCLKConfig(&rcc_ex_clk_init_struct);
arostm	0:4af3ca173992	702	}
arostm	0:4af3ca173992	703	else /* AUDIO_FREQUENCY_8K, AUDIO_FREQUENCY_16K, AUDIO_FREQUENCY_48K */
arostm	0:4af3ca173992	704	{
arostm	0:4af3ca173992	705	/* I2S clock config
arostm	0:4af3ca173992	706	PLLI2S_VCO: VCO_344M
arostm	0:4af3ca173992	707	I2S_CLK(first level) = PLLI2S_VCO/PLLI2SR = 344/7 = 49.142 Mhz
arostm	0:4af3ca173992	708	I2S_CLK_x = I2S_CLK(first level)/PLLI2SDIVR = 49.142/1 = 49.142 Mhz */
arostm	0:4af3ca173992	709	rcc_ex_clk_init_struct.PeriphClockSelection = RCC_PERIPHCLK_I2S_APB1 \| RCC_PERIPHCLK_PLLI2S;
arostm	0:4af3ca173992	710	rcc_ex_clk_init_struct.I2sApb1ClockSelection = RCC_I2SAPB1CLKSOURCE_PLLI2S;
arostm	0:4af3ca173992	711	rcc_ex_clk_init_struct.PLLI2SSelection = RCC_PLLI2SCLKSOURCE_PLLSRC;
arostm	0:4af3ca173992	712	rcc_ex_clk_init_struct.PLLI2S.PLLI2SM = 8;
arostm	0:4af3ca173992	713	rcc_ex_clk_init_struct.PLLI2S.PLLI2SN = 344;
arostm	0:4af3ca173992	714	rcc_ex_clk_init_struct.PLLI2S.PLLI2SR = 7;
arostm	0:4af3ca173992	715
arostm	0:4af3ca173992	716	HAL_RCCEx_PeriphCLKConfig(&rcc_ex_clk_init_struct);
arostm	0:4af3ca173992	717	}
arostm	0:4af3ca173992	718	}
arostm	0:4af3ca173992	719
arostm	0:4af3ca173992	720	/*******************************************************************************
arostm	0:4af3ca173992	721	Static Functions
arostm	0:4af3ca173992	722	*******************************************************************************/
arostm	0:4af3ca173992	723
arostm	0:4af3ca173992	724	/**
arostm	0:4af3ca173992	725	* @brief Initializes the Audio Codec audio interface (I2S)
arostm	0:4af3ca173992	726	* @note This function assumes that the I2S input clock
arostm	0:4af3ca173992	727	* is already configured and ready to be used.
arostm	0:4af3ca173992	728	* @param AudioFreq: Audio frequency to be configured for the I2S peripheral.
arostm	0:4af3ca173992	729	*/
arostm	0:4af3ca173992	730	static void I2Sx_Out_Init(uint32_t AudioFreq)
arostm	0:4af3ca173992	731	{
arostm	0:4af3ca173992	732	/* Initialize the hAudioInI2s Instance parameter */
arostm	0:4af3ca173992	733	haudio_i2s.Instance = AUDIO_OUT_I2Sx;
arostm	0:4af3ca173992	734
arostm	0:4af3ca173992	735	/* Disable I2S block */
arostm	0:4af3ca173992	736	__HAL_I2S_DISABLE(&haudio_i2s);
arostm	0:4af3ca173992	737
arostm	0:4af3ca173992	738	/* I2S peripheral configuration */
arostm	0:4af3ca173992	739	haudio_i2s.Init.AudioFreq = AudioFreq;
arostm	0:4af3ca173992	740	haudio_i2s.Init.ClockSource = I2S_CLOCK_PLL;
arostm	0:4af3ca173992	741	haudio_i2s.Init.CPOL = I2S_CPOL_LOW;
arostm	0:4af3ca173992	742	haudio_i2s.Init.DataFormat = I2S_DATAFORMAT_16B;
arostm	0:4af3ca173992	743	haudio_i2s.Init.MCLKOutput = I2S_MCLKOUTPUT_ENABLE;
arostm	0:4af3ca173992	744	haudio_i2s.Init.Mode = I2S_MODE_MASTER_TX;
arostm	0:4af3ca173992	745	haudio_i2s.Init.Standard = I2S_STANDARD_PHILIPS;
arostm	0:4af3ca173992	746	haudio_i2s.Init.FullDuplexMode = I2S_FULLDUPLEXMODE_DISABLE;
arostm	0:4af3ca173992	747
arostm	0:4af3ca173992	748	/* Init the I2S */
arostm	0:4af3ca173992	749	HAL_I2S_Init(&haudio_i2s);
arostm	0:4af3ca173992	750
arostm	0:4af3ca173992	751	/* Enable I2S block */
arostm	0:4af3ca173992	752	__HAL_I2S_ENABLE(&haudio_i2s);
arostm	0:4af3ca173992	753	}
arostm	0:4af3ca173992	754
arostm	0:4af3ca173992	755	/**
arostm	0:4af3ca173992	756	* @brief Deinitializes the Audio Codec audio interface (I2S).
arostm	0:4af3ca173992	757	*/
arostm	0:4af3ca173992	758	static void I2Sx_Out_DeInit(void)
arostm	0:4af3ca173992	759	{
arostm	0:4af3ca173992	760	/* Initialize the hAudioInI2s Instance parameter */
arostm	0:4af3ca173992	761	haudio_i2s.Instance = AUDIO_OUT_I2Sx;
arostm	0:4af3ca173992	762
arostm	0:4af3ca173992	763	/* Disable I2S block */
arostm	0:4af3ca173992	764	__HAL_I2S_DISABLE(&haudio_i2s);
arostm	0:4af3ca173992	765
arostm	0:4af3ca173992	766	/* DeInit the I2S */
arostm	0:4af3ca173992	767	HAL_I2S_DeInit(&haudio_i2s);
arostm	0:4af3ca173992	768	}
arostm	0:4af3ca173992	769
arostm	0:4af3ca173992	770	/**
arostm	0:4af3ca173992	771	* @}
arostm	0:4af3ca173992	772	*/
arostm	0:4af3ca173992	773
arostm	0:4af3ca173992	774	/** @defgroup STM32F413H_DISCOVERY_AUDIO_IN_Private_Functions STM32F413H DISCOVERY AUDIO IN Private functions
arostm	0:4af3ca173992	775	* @{
arostm	0:4af3ca173992	776	*/
arostm	0:4af3ca173992	777
arostm	0:4af3ca173992	778	/**
arostm	0:4af3ca173992	779	* @brief Initializes wave recording.
arostm	0:4af3ca173992	780	* @param AudioFreq: Audio frequency to be configured for the audio in peripheral.
arostm	0:4af3ca173992	781	* @param BitRes: Audio bit resolution.
arostm	0:4af3ca173992	782	* @param ChnlNbr: Audio channel number.
arostm	0:4af3ca173992	783	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	784	*/
arostm	0:4af3ca173992	785	uint8_t BSP_AUDIO_IN_Init(uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
arostm	0:4af3ca173992	786	{
arostm	0:4af3ca173992	787	return BSP_AUDIO_IN_InitEx(INPUT_DEVICE_DIGITAL_MIC, AudioFreq, BitRes, ChnlNbr);
arostm	0:4af3ca173992	788	}
arostm	0:4af3ca173992	789
arostm	0:4af3ca173992	790	/**
arostm	0:4af3ca173992	791	* @brief Initializes wave recording.
arostm	0:4af3ca173992	792	* @param InputDevice: INPUT_DEVICE_DIGITAL_MICx or INPUT_DEVICE_ANALOG_MIC.
arostm	0:4af3ca173992	793	* @param AudioFreq: Audio frequency to be configured for the audio in peripheral.
arostm	0:4af3ca173992	794	* @param BitRes: Audio bit resolution.
arostm	0:4af3ca173992	795	* @param ChnlNbr: Audio channel number.
arostm	0:4af3ca173992	796	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	797	*/
arostm	0:4af3ca173992	798	uint8_t BSP_AUDIO_IN_InitEx(uint32_t InputDevice, uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
arostm	0:4af3ca173992	799	{
arostm	0:4af3ca173992	800	uint32_t ret = AUDIO_ERROR;
arostm	0:4af3ca173992	801	uint32_t deviceid =0;
arostm	0:4af3ca173992	802	uint32_t mic_enabled =0;
arostm	0:4af3ca173992	803	uint16_t buffer_fake[16] = {0x00};
arostm	0:4af3ca173992	804	uint32_t i = 0;
arostm	0:4af3ca173992	805
arostm	0:4af3ca173992	806	/* Store the audio record context */
arostm	0:4af3ca173992	807	hAudioIn.Frequency = AudioFreq;
arostm	0:4af3ca173992	808	hAudioIn.BitResolution = BitRes;
arostm	0:4af3ca173992	809	hAudioIn.InputDevice = InputDevice;
arostm	0:4af3ca173992	810	hAudioIn.ChannelNbr = ChnlNbr;
arostm	0:4af3ca173992	811
arostm	0:4af3ca173992	812	/* Store the total number of microphones enabled */
arostm	0:4af3ca173992	813	for(i = 0; i < DFSDM_MIC_NUMBER; i ++)
arostm	0:4af3ca173992	814	{
arostm	0:4af3ca173992	815	if(((hAudioIn.InputDevice >> i) & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
arostm	0:4af3ca173992	816	{
arostm	0:4af3ca173992	817	mic_enabled++;
arostm	0:4af3ca173992	818	}
arostm	0:4af3ca173992	819	}
arostm	0:4af3ca173992	820
arostm	0:4af3ca173992	821	if (InputDevice == INPUT_DEVICE_ANALOG_MIC)
arostm	0:4af3ca173992	822	{
arostm	0:4af3ca173992	823	InputDevice = INPUT_DEVICE_INPUT_LINE_1;
arostm	0:4af3ca173992	824	/* INPUT_DEVICE_ANALOG_MIC */
arostm	0:4af3ca173992	825	/* Disable I2S */
arostm	0:4af3ca173992	826	I2Sx_In_DeInit();
arostm	0:4af3ca173992	827
arostm	0:4af3ca173992	828	/* PLL clock is set depending on the AudioFreq (44.1khz vs 48khz groups) */
arostm	0:4af3ca173992	829	BSP_AUDIO_IN_ClockConfig(AudioFreq, NULL); /* Clock config is shared between AUDIO IN and OUT for analog mic */
arostm	0:4af3ca173992	830
arostm	0:4af3ca173992	831	/* I2S data transfer preparation:
arostm	0:4af3ca173992	832	Prepare the Media to be used for the audio transfer from I2S peripheral to memory */
arostm	0:4af3ca173992	833	haudio_i2s.Instance = AUDIO_IN_I2Sx;
arostm	0:4af3ca173992	834	if(HAL_I2S_GetState(&haudio_i2s) == HAL_I2S_STATE_RESET)
arostm	0:4af3ca173992	835	{
arostm	0:4af3ca173992	836	BSP_AUDIO_OUT_MspInit(&haudio_i2s, NULL); /* Initialize GPIOs for SPI3 Master signals */
arostm	0:4af3ca173992	837	/* Init the I2S MSP: this __weak function can be redefined by the application*/
arostm	0:4af3ca173992	838	BSP_AUDIO_IN_MspInit(NULL);
arostm	0:4af3ca173992	839	}
arostm	0:4af3ca173992	840
arostm	0:4af3ca173992	841	/* Configure I2S */
arostm	0:4af3ca173992	842	I2Sx_In_Init(AudioFreq);
arostm	0:4af3ca173992	843
arostm	0:4af3ca173992	844	AUDIO_IO_Init();
arostm	0:4af3ca173992	845
arostm	0:4af3ca173992	846	/* wm8994 codec initialization */
arostm	0:4af3ca173992	847	deviceid = wm8994_drv.ReadID(AUDIO_I2C_ADDRESS);
arostm	0:4af3ca173992	848
arostm	0:4af3ca173992	849	if((deviceid) == WM8994_ID)
arostm	0:4af3ca173992	850	{
arostm	0:4af3ca173992	851	/* Reset the Codec Registers */
arostm	0:4af3ca173992	852	wm8994_drv.Reset(AUDIO_I2C_ADDRESS);
arostm	0:4af3ca173992	853	/* Initialize the audio driver structure */
arostm	0:4af3ca173992	854	audio_drv = &wm8994_drv;
arostm	0:4af3ca173992	855	ret = AUDIO_OK;
arostm	0:4af3ca173992	856	}
arostm	0:4af3ca173992	857	else
arostm	0:4af3ca173992	858	{
arostm	0:4af3ca173992	859	ret = AUDIO_ERROR;
arostm	0:4af3ca173992	860	}
arostm	0:4af3ca173992	861
arostm	0:4af3ca173992	862	if(ret == AUDIO_OK)
arostm	0:4af3ca173992	863	{
arostm	0:4af3ca173992	864	/* Receive fake I2S data in order to generate MCLK needed by WM8994 to set its registers */
arostm	0:4af3ca173992	865	HAL_I2S_Receive_DMA(&haudio_i2s, buffer_fake, 16);
arostm	0:4af3ca173992	866	/* Initialize the codec internal registers */
arostm	0:4af3ca173992	867	audio_drv->Init(AUDIO_I2C_ADDRESS, (OUTPUT_DEVICE_HEADPHONE\|InputDevice), 100, AudioFreq);
arostm	0:4af3ca173992	868	/* Stop receiving fake I2S data */
arostm	0:4af3ca173992	869	HAL_I2S_DMAStop(&haudio_i2s);
arostm	0:4af3ca173992	870	}
arostm	0:4af3ca173992	871	}
arostm	0:4af3ca173992	872	else
arostm	0:4af3ca173992	873	{
arostm	0:4af3ca173992	874	if(hAudioIn.ChannelNbr != mic_enabled)
arostm	0:4af3ca173992	875	{
arostm	0:4af3ca173992	876	return AUDIO_ERROR;
arostm	0:4af3ca173992	877	}
arostm	0:4af3ca173992	878	else
arostm	0:4af3ca173992	879	{
arostm	0:4af3ca173992	880	/* PLL clock is set depending on the AudioFreq (44.1khz vs 48khz groups) */
arostm	0:4af3ca173992	881	BSP_AUDIO_IN_ClockConfig(AudioFreq, NULL); /* Clock config is shared between AUDIO IN and OUT for analog mic */
arostm	0:4af3ca173992	882
arostm	0:4af3ca173992	883	/* Init the DFSDM MSP: this __weak function can be redefined by the application*/
arostm	0:4af3ca173992	884	BSP_AUDIO_IN_MspInit(NULL);
arostm	0:4af3ca173992	885
arostm	0:4af3ca173992	886	/* Default configuration of DFSDM filters and channels */
arostm	0:4af3ca173992	887	ret = BSP_AUDIO_IN_ConfigDigitalMic(hAudioIn.InputDevice, NULL);
arostm	0:4af3ca173992	888	}
arostm	0:4af3ca173992	889	}
arostm	0:4af3ca173992	890
arostm	0:4af3ca173992	891	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	892	return ret;
arostm	0:4af3ca173992	893	}
arostm	0:4af3ca173992	894
arostm	0:4af3ca173992	895	/**
arostm	0:4af3ca173992	896	* @brief DeInitializes the audio peripheral.
arostm	0:4af3ca173992	897	*/
arostm	0:4af3ca173992	898	void BSP_AUDIO_IN_DeInit(void)
arostm	0:4af3ca173992	899	{
arostm	0:4af3ca173992	900	if(hAudioIn.InputDevice != INPUT_DEVICE_ANALOG_MIC)
arostm	0:4af3ca173992	901	{
arostm	0:4af3ca173992	902	/* MSP filters/channels initialization */
arostm	0:4af3ca173992	903	BSP_AUDIO_IN_MspDeInit(NULL);
arostm	0:4af3ca173992	904
arostm	0:4af3ca173992	905	DFSDMx_DeInit();
arostm	0:4af3ca173992	906	}
arostm	0:4af3ca173992	907	else
arostm	0:4af3ca173992	908	{
arostm	0:4af3ca173992	909	I2Sx_In_DeInit();
arostm	0:4af3ca173992	910	}
arostm	0:4af3ca173992	911	}
arostm	0:4af3ca173992	912
arostm	0:4af3ca173992	913	/**
arostm	0:4af3ca173992	914	* @brief Initializes default configuration of the Digital Filter for Sigma-Delta Modulators interface (DFSDM).
arostm	0:4af3ca173992	915	* @param InputDevice: The microphone to be configured. Can be INPUT_DEVICE_DIGITAL_MIC1..INPUT_DEVICE_DIGITAL_MIC5
arostm	0:4af3ca173992	916	* @note Channel output Clock Divider and Filter Oversampling are calculated as follow:
arostm	0:4af3ca173992	917	* - Clock_Divider = CLK(input DFSDM)/CLK(micro) with
arostm	0:4af3ca173992	918	* 1MHZ < CLK(micro) < 3.2MHZ (TYP 2.4MHZ for MP34DT01TR)
arostm	0:4af3ca173992	919	* - Oversampling = CLK(input DFSDM)/(Clock_Divider * AudioFreq)
arostm	0:4af3ca173992	920	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	921	*/
arostm	0:4af3ca173992	922	uint8_t BSP_AUDIO_IN_ConfigMicDefault(uint32_t InputDevice)
arostm	0:4af3ca173992	923	{
arostm	0:4af3ca173992	924	uint32_t i = 0, mic_init[DFSDM_MIC_NUMBER] = {0};
arostm	0:4af3ca173992	925	uint32_t filter_ch = 0, mic_num = 0;
arostm	0:4af3ca173992	926
arostm	0:4af3ca173992	927	DFSDM_Filter_TypeDef* FilterInstnace[DFSDM_MIC_NUMBER] = {AUDIO_DFSDMx_MIC1_FILTER, AUDIO_DFSDMx_MIC2_FILTER, AUDIO_DFSDMx_MIC3_FILTER, AUDIO_DFSDMx_MIC4_FILTER, AUDIO_DFSDMx_MIC5_FILTER};
arostm	0:4af3ca173992	928	DFSDM_Channel_TypeDef* ChannelInstnace[DFSDM_MIC_NUMBER] = {AUDIO_DFSDMx_MIC1_CHANNEL, AUDIO_DFSDMx_MIC2_CHANNEL, AUDIO_DFSDMx_MIC3_CHANNEL, AUDIO_DFSDMx_MIC4_CHANNEL, AUDIO_DFSDMx_MIC5_CHANNEL};
arostm	0:4af3ca173992	929	uint32_t DigitalMicPins[DFSDM_MIC_NUMBER] = {DFSDM_CHANNEL_SAME_CHANNEL_PINS, DFSDM_CHANNEL_SAME_CHANNEL_PINS, DFSDM_CHANNEL_FOLLOWING_CHANNEL_PINS, DFSDM_CHANNEL_SAME_CHANNEL_PINS, DFSDM_CHANNEL_FOLLOWING_CHANNEL_PINS};
arostm	0:4af3ca173992	930	uint32_t DigitalMicType[DFSDM_MIC_NUMBER] = {DFSDM_CHANNEL_SPI_RISING, DFSDM_CHANNEL_SPI_RISING, DFSDM_CHANNEL_SPI_FALLING, DFSDM_CHANNEL_SPI_RISING, DFSDM_CHANNEL_SPI_FALLING};
arostm	0:4af3ca173992	931	uint32_t Channel4Filter[DFSDM_MIC_NUMBER] = {AUDIO_DFSDMx_MIC1_CHANNEL_FOR_FILTER, AUDIO_DFSDMx_MIC2_CHANNEL_FOR_FILTER, AUDIO_DFSDMx_MIC3_CHANNEL_FOR_FILTER, AUDIO_DFSDMx_MIC4_CHANNEL_FOR_FILTER, AUDIO_DFSDMx_MIC5_CHANNEL_FOR_FILTER};
arostm	0:4af3ca173992	932
arostm	0:4af3ca173992	933	for(i = 0; i < hAudioIn.ChannelNbr; i++)
arostm	0:4af3ca173992	934	{
arostm	0:4af3ca173992	935	if(((InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)] != 1))
arostm	0:4af3ca173992	936	{
arostm	0:4af3ca173992	937	mic_num = POS_VAL(INPUT_DEVICE_DIGITAL_MIC1);
arostm	0:4af3ca173992	938	}
arostm	0:4af3ca173992	939	else if(((InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)] != 1))
arostm	0:4af3ca173992	940	{
arostm	0:4af3ca173992	941	mic_num = POS_VAL(INPUT_DEVICE_DIGITAL_MIC2);
arostm	0:4af3ca173992	942	}
arostm	0:4af3ca173992	943	else if(((InputDevice & INPUT_DEVICE_DIGITAL_MIC3) == INPUT_DEVICE_DIGITAL_MIC3) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC3)] != 1))
arostm	0:4af3ca173992	944	{
arostm	0:4af3ca173992	945	mic_num = POS_VAL(INPUT_DEVICE_DIGITAL_MIC3);
arostm	0:4af3ca173992	946	}
arostm	0:4af3ca173992	947	else if(((InputDevice & INPUT_DEVICE_DIGITAL_MIC4) == INPUT_DEVICE_DIGITAL_MIC4) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC4)] != 1))
arostm	0:4af3ca173992	948	{
arostm	0:4af3ca173992	949	mic_num = POS_VAL(INPUT_DEVICE_DIGITAL_MIC4);
arostm	0:4af3ca173992	950	}
arostm	0:4af3ca173992	951	else if(((InputDevice & INPUT_DEVICE_DIGITAL_MIC5) == INPUT_DEVICE_DIGITAL_MIC5) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC5)] != 1))
arostm	0:4af3ca173992	952	{
arostm	0:4af3ca173992	953	mic_num = POS_VAL(INPUT_DEVICE_DIGITAL_MIC5);
arostm	0:4af3ca173992	954	}
arostm	0:4af3ca173992	955
arostm	0:4af3ca173992	956	mic_init[mic_num] = 1;
arostm	0:4af3ca173992	957
arostm	0:4af3ca173992	958	HAL_DFSDM_FilterDeInit(&hAudioInDfsdmFilter[mic_num]);
arostm	0:4af3ca173992	959	/* MIC filters initialization */
arostm	0:4af3ca173992	960	__HAL_DFSDM_FILTER_RESET_HANDLE_STATE(&hAudioInDfsdmFilter[mic_num]);
arostm	0:4af3ca173992	961	hAudioInDfsdmFilter[mic_num].Instance = FilterInstnace[mic_num];
arostm	0:4af3ca173992	962	hAudioInDfsdmFilter[mic_num].Init.RegularParam.Trigger = DFSDM_FILTER_SW_TRIGGER;
arostm	0:4af3ca173992	963	hAudioInDfsdmFilter[mic_num].Init.RegularParam.FastMode = ENABLE;
arostm	0:4af3ca173992	964	hAudioInDfsdmFilter[mic_num].Init.RegularParam.DmaMode = ENABLE;
arostm	0:4af3ca173992	965	hAudioInDfsdmFilter[mic_num].Init.InjectedParam.Trigger = DFSDM_FILTER_SW_TRIGGER;
arostm	0:4af3ca173992	966	hAudioInDfsdmFilter[mic_num].Init.InjectedParam.ScanMode = DISABLE;
arostm	0:4af3ca173992	967	hAudioInDfsdmFilter[mic_num].Init.InjectedParam.DmaMode = DISABLE;
arostm	0:4af3ca173992	968	hAudioInDfsdmFilter[mic_num].Init.InjectedParam.ExtTrigger = DFSDM_FILTER_EXT_TRIG_TIM8_TRGO;
arostm	0:4af3ca173992	969	hAudioInDfsdmFilter[mic_num].Init.InjectedParam.ExtTriggerEdge = DFSDM_FILTER_EXT_TRIG_BOTH_EDGES;
arostm	0:4af3ca173992	970	hAudioInDfsdmFilter[mic_num].Init.FilterParam.SincOrder = DFSDM_FILTER_ORDER(hAudioIn.Frequency);
arostm	0:4af3ca173992	971	hAudioInDfsdmFilter[mic_num].Init.FilterParam.Oversampling = DFSDM_OVER_SAMPLING(hAudioIn.Frequency);
arostm	0:4af3ca173992	972	hAudioInDfsdmFilter[mic_num].Init.FilterParam.IntOversampling = 1;
arostm	0:4af3ca173992	973
arostm	0:4af3ca173992	974	if(HAL_OK != HAL_DFSDM_FilterInit(&hAudioInDfsdmFilter[mic_num]))
arostm	0:4af3ca173992	975	{
arostm	0:4af3ca173992	976	return AUDIO_ERROR;
arostm	0:4af3ca173992	977	}
arostm	0:4af3ca173992	978
arostm	0:4af3ca173992	979	HAL_DFSDM_ChannelDeInit(&hAudioInDfsdmChannel[mic_num]);
arostm	0:4af3ca173992	980	/* MIC channels initialization */
arostm	0:4af3ca173992	981	__HAL_DFSDM_CHANNEL_RESET_HANDLE_STATE(&hAudioInDfsdmChannel[mic_num]);
arostm	0:4af3ca173992	982	hAudioInDfsdmChannel[mic_num].Init.OutputClock.Activation = ENABLE;
arostm	0:4af3ca173992	983	hAudioInDfsdmChannel[mic_num].Init.OutputClock.Selection = DFSDM_CHANNEL_OUTPUT_CLOCK_AUDIO;
arostm	0:4af3ca173992	984	hAudioInDfsdmChannel[mic_num].Init.OutputClock.Divider = DFSDM_CLOCK_DIVIDER(hAudioIn.Frequency);
arostm	0:4af3ca173992	985	hAudioInDfsdmChannel[mic_num].Init.Input.Multiplexer = DFSDM_CHANNEL_EXTERNAL_INPUTS;
arostm	0:4af3ca173992	986	hAudioInDfsdmChannel[mic_num].Init.Input.DataPacking = DFSDM_CHANNEL_STANDARD_MODE;
arostm	0:4af3ca173992	987	hAudioInDfsdmChannel[mic_num].Init.SerialInterface.SpiClock = DFSDM_CHANNEL_SPI_CLOCK_INTERNAL;
arostm	0:4af3ca173992	988	hAudioInDfsdmChannel[mic_num].Init.Awd.FilterOrder = DFSDM_CHANNEL_SINC1_ORDER;
arostm	0:4af3ca173992	989	hAudioInDfsdmChannel[mic_num].Init.Awd.Oversampling = 10;
arostm	0:4af3ca173992	990	hAudioInDfsdmChannel[mic_num].Init.Offset = 0;
arostm	0:4af3ca173992	991	hAudioInDfsdmChannel[mic_num].Init.RightBitShift = DFSDM_MIC_BIT_SHIFT(hAudioIn.Frequency);
arostm	0:4af3ca173992	992	hAudioInDfsdmChannel[mic_num].Instance = ChannelInstnace[mic_num];
arostm	0:4af3ca173992	993	hAudioInDfsdmChannel[mic_num].Init.Input.Pins = DigitalMicPins[mic_num];
arostm	0:4af3ca173992	994	hAudioInDfsdmChannel[mic_num].Init.SerialInterface.Type = DigitalMicType[mic_num];
arostm	0:4af3ca173992	995
arostm	0:4af3ca173992	996	if(HAL_OK != HAL_DFSDM_ChannelInit(&hAudioInDfsdmChannel[mic_num]))
arostm	0:4af3ca173992	997	{
arostm	0:4af3ca173992	998	return AUDIO_ERROR;
arostm	0:4af3ca173992	999	}
arostm	0:4af3ca173992	1000
arostm	0:4af3ca173992	1001	filter_ch = Channel4Filter[mic_num];
arostm	0:4af3ca173992	1002	/* Configure injected channel */
arostm	0:4af3ca173992	1003	if(HAL_OK != HAL_DFSDM_FilterConfigRegChannel(&hAudioInDfsdmFilter[mic_num], filter_ch, DFSDM_CONTINUOUS_CONV_ON))
arostm	0:4af3ca173992	1004	{
arostm	0:4af3ca173992	1005	return AUDIO_ERROR;
arostm	0:4af3ca173992	1006	}
arostm	0:4af3ca173992	1007	}
arostm	0:4af3ca173992	1008	return AUDIO_OK;
arostm	0:4af3ca173992	1009	}
arostm	0:4af3ca173992	1010
arostm	0:4af3ca173992	1011	/**
arostm	0:4af3ca173992	1012	* @brief Initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).
arostm	0:4af3ca173992	1013	* @param InputDevice: The microphone to be configured. Can be INPUT_DEVICE_DIGITAL_MIC1..INPUT_DEVICE_DIGITAL_MIC5
arostm	0:4af3ca173992	1014	* @param Params : pointer on additional configuration parameters, can be NULL.
arostm	0:4af3ca173992	1015	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1016	*/
arostm	0:4af3ca173992	1017	__weak uint8_t BSP_AUDIO_IN_ConfigDigitalMic(uint32_t InputDevice, void *Params)
arostm	0:4af3ca173992	1018	{
arostm	0:4af3ca173992	1019	/* Prevent unused argument(s) compilation warning */
arostm	0:4af3ca173992	1020	UNUSED(Params);
arostm	0:4af3ca173992	1021
arostm	0:4af3ca173992	1022	/* Default configuration of DFSDM filters and channels */
arostm	0:4af3ca173992	1023	return(BSP_AUDIO_IN_ConfigMicDefault(InputDevice));
arostm	0:4af3ca173992	1024	/* Note: This function can be called at application level and default configuration
arostm	0:4af3ca173992	1025	can be ovewritten to fit user's need */
arostm	0:4af3ca173992	1026	}
arostm	0:4af3ca173992	1027
arostm	0:4af3ca173992	1028	/**
arostm	0:4af3ca173992	1029	* @brief Allocate channel buffer scratch
arostm	0:4af3ca173992	1030	* @param pScratch : pointer to scratch tables.
arostm	0:4af3ca173992	1031	* @param size: size of scratch buffer
arostm	0:4af3ca173992	1032	*/
arostm	0:4af3ca173992	1033	uint8_t BSP_AUDIO_IN_AllocScratch (int32_t *pScratch, uint32_t size)
arostm	0:4af3ca173992	1034	{
arostm	0:4af3ca173992	1035	uint32_t idx;
arostm	0:4af3ca173992	1036
arostm	0:4af3ca173992	1037	ScratchSize = size / DEFAULT_AUDIO_IN_CHANNEL_NBR;
arostm	0:4af3ca173992	1038
arostm	0:4af3ca173992	1039	/* copy scratch pointers */
arostm	0:4af3ca173992	1040	for (idx = 0; idx < DEFAULT_AUDIO_IN_CHANNEL_NBR ; idx++)
arostm	0:4af3ca173992	1041	{
arostm	0:4af3ca173992	1042	pScratchBuff[idx] = (int32_t )(pScratch + idx ScratchSize);
arostm	0:4af3ca173992	1043	}
arostm	0:4af3ca173992	1044	/* Return AUDIO_OK */
arostm	0:4af3ca173992	1045	return AUDIO_OK;
arostm	0:4af3ca173992	1046	}
arostm	0:4af3ca173992	1047
arostm	0:4af3ca173992	1048	/**
arostm	0:4af3ca173992	1049	* @brief Starts audio recording.
arostm	0:4af3ca173992	1050	* @param pBuf: Main buffer pointer for the recorded data storing
arostm	0:4af3ca173992	1051	* @param size: Current size of the recorded buffer
arostm	0:4af3ca173992	1052	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1053	*/
arostm	0:4af3ca173992	1054	uint8_t BSP_AUDIO_IN_Record(uint16_t *pBuf, uint32_t size)
arostm	0:4af3ca173992	1055	{
arostm	0:4af3ca173992	1056	hAudioIn.pRecBuf = pBuf;
arostm	0:4af3ca173992	1057	hAudioIn.RecSize = size;
arostm	0:4af3ca173992	1058	/* Reset Application Buffer Trigger */
arostm	0:4af3ca173992	1059	AppBuffTrigger = 0;
arostm	0:4af3ca173992	1060	AppBuffHalf = 0;
arostm	0:4af3ca173992	1061
arostm	0:4af3ca173992	1062	if (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC)
arostm	0:4af3ca173992	1063	{
arostm	0:4af3ca173992	1064	/* Call the Media layer start function for MIC1 channel */
arostm	0:4af3ca173992	1065	if(HAL_OK != HAL_DFSDM_FilterRegularStart_DMA(&hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)], pScratchBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)], ScratchSize))
arostm	0:4af3ca173992	1066	{
arostm	0:4af3ca173992	1067	return AUDIO_ERROR;
arostm	0:4af3ca173992	1068	}
arostm	0:4af3ca173992	1069
arostm	0:4af3ca173992	1070	/* Call the Media layer start function for MIC2 channel */
arostm	0:4af3ca173992	1071	if(HAL_OK != HAL_DFSDM_FilterRegularStart_DMA(&hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)], pScratchBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)], ScratchSize))
arostm	0:4af3ca173992	1072	{
arostm	0:4af3ca173992	1073	return AUDIO_ERROR;
arostm	0:4af3ca173992	1074	}
arostm	0:4af3ca173992	1075	}
arostm	0:4af3ca173992	1076	else
arostm	0:4af3ca173992	1077	{
arostm	0:4af3ca173992	1078	/* Start the process to receive the DMA */
arostm	0:4af3ca173992	1079	if (HAL_OK != HAL_I2SEx_TransmitReceive_DMA(&haudio_i2s, pBuf, pBuf, size))
arostm	0:4af3ca173992	1080	{
arostm	0:4af3ca173992	1081	return AUDIO_ERROR;
arostm	0:4af3ca173992	1082	}
arostm	0:4af3ca173992	1083	}
arostm	0:4af3ca173992	1084	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	1085	return AUDIO_OK;
arostm	0:4af3ca173992	1086	}
arostm	0:4af3ca173992	1087
arostm	0:4af3ca173992	1088	/**
arostm	0:4af3ca173992	1089	* @brief Starts audio recording.
arostm	0:4af3ca173992	1090	* @param pBuf: Main buffer pointer for the recorded data storing
arostm	0:4af3ca173992	1091	* @param size: Current size of the recorded buffer
arostm	0:4af3ca173992	1092	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1093	*/
arostm	0:4af3ca173992	1094	uint8_t BSP_AUDIO_IN_RecordEx(uint32_t *pBuf, uint32_t size)
arostm	0:4af3ca173992	1095	{
arostm	0:4af3ca173992	1096	uint8_t ret = AUDIO_ERROR;
arostm	0:4af3ca173992	1097	hAudioIn.RecSize = size;
arostm	0:4af3ca173992	1098	uint32_t i = 0;
arostm	0:4af3ca173992	1099	uint32_t mic_init[DFSDM_MIC_NUMBER] = {0};
arostm	0:4af3ca173992	1100	if (hAudioIn.InputDevice == INPUT_DEVICE_ANALOG_MIC)
arostm	0:4af3ca173992	1101	{
arostm	0:4af3ca173992	1102	return ret;
arostm	0:4af3ca173992	1103	}
arostm	0:4af3ca173992	1104	else
arostm	0:4af3ca173992	1105	{
arostm	0:4af3ca173992	1106	hAudioIn.MultiBuffMode = 1;
arostm	0:4af3ca173992	1107	for(i = 0; i < hAudioIn.ChannelNbr; i++)
arostm	0:4af3ca173992	1108	{
arostm	0:4af3ca173992	1109	if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)] != 1))
arostm	0:4af3ca173992	1110	{
arostm	0:4af3ca173992	1111	/* Call the Media layer start function for MIC1 channel 1 */
arostm	0:4af3ca173992	1112	if(HAL_OK != HAL_DFSDM_FilterRegularStart_DMA(&hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)], (int32_t*)pBuf[i], size))
arostm	0:4af3ca173992	1113	{
arostm	0:4af3ca173992	1114	return AUDIO_ERROR;
arostm	0:4af3ca173992	1115	}
arostm	0:4af3ca173992	1116	MicBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)] = i;
arostm	0:4af3ca173992	1117	mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)] = 1;
arostm	0:4af3ca173992	1118	}
arostm	0:4af3ca173992	1119	else if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)] != 1))
arostm	0:4af3ca173992	1120	{
arostm	0:4af3ca173992	1121	/* Call the Media layer start function for MIC2 channel 1 */
arostm	0:4af3ca173992	1122	if(HAL_OK != HAL_DFSDM_FilterRegularStart_DMA(&hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)], (int32_t*)pBuf[i], size))
arostm	0:4af3ca173992	1123	{
arostm	0:4af3ca173992	1124	return AUDIO_ERROR;
arostm	0:4af3ca173992	1125	}
arostm	0:4af3ca173992	1126	MicBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)] = i;
arostm	0:4af3ca173992	1127	mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)] = 1;
arostm	0:4af3ca173992	1128	}
arostm	0:4af3ca173992	1129	else if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC3) == INPUT_DEVICE_DIGITAL_MIC3) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC3)] != 1))
arostm	0:4af3ca173992	1130	{
arostm	0:4af3ca173992	1131	/* Call the Media layer start function for MIC3 channel 0 */
arostm	0:4af3ca173992	1132	if(HAL_OK != HAL_DFSDM_FilterRegularStart_DMA(&hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC3)], (int32_t*)pBuf[i], size))
arostm	0:4af3ca173992	1133	{
arostm	0:4af3ca173992	1134	return AUDIO_ERROR;
arostm	0:4af3ca173992	1135	}
arostm	0:4af3ca173992	1136	MicBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC3)] = i;
arostm	0:4af3ca173992	1137	mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC3)] = 1;
arostm	0:4af3ca173992	1138	}
arostm	0:4af3ca173992	1139	else if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC4) == INPUT_DEVICE_DIGITAL_MIC4) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC4)] != 1))
arostm	0:4af3ca173992	1140	{
arostm	0:4af3ca173992	1141	/* Call the Media layer start function for MIC4 channel 7 */
arostm	0:4af3ca173992	1142	if(HAL_OK != HAL_DFSDM_FilterRegularStart_DMA(&hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC4)], (int32_t*)pBuf[i], size))
arostm	0:4af3ca173992	1143	{
arostm	0:4af3ca173992	1144	return AUDIO_ERROR;
arostm	0:4af3ca173992	1145	}
arostm	0:4af3ca173992	1146	MicBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC4)] = i;
arostm	0:4af3ca173992	1147	mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC4)] = 1;
arostm	0:4af3ca173992	1148	}
arostm	0:4af3ca173992	1149	else if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC5) == INPUT_DEVICE_DIGITAL_MIC5) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC5)] != 1))
arostm	0:4af3ca173992	1150	{
arostm	0:4af3ca173992	1151	/* Call the Media layer start function for MIC5 channel 6 */
arostm	0:4af3ca173992	1152	if(HAL_OK != HAL_DFSDM_FilterRegularStart_DMA(&hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC5)], (int32_t*)pBuf[i], size))
arostm	0:4af3ca173992	1153	{
arostm	0:4af3ca173992	1154	return AUDIO_ERROR;
arostm	0:4af3ca173992	1155	}
arostm	0:4af3ca173992	1156	MicBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC5)] = i;
arostm	0:4af3ca173992	1157	mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC5)] = 1;
arostm	0:4af3ca173992	1158	}
arostm	0:4af3ca173992	1159	}
arostm	0:4af3ca173992	1160	}
arostm	0:4af3ca173992	1161	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	1162	return AUDIO_OK;
arostm	0:4af3ca173992	1163	}
arostm	0:4af3ca173992	1164
arostm	0:4af3ca173992	1165	/**
arostm	0:4af3ca173992	1166	* @brief Initializes the I2S MSP.
arostm	0:4af3ca173992	1167	*/
arostm	0:4af3ca173992	1168	static void I2Sx_In_MspInit(void)
arostm	0:4af3ca173992	1169	{
arostm	0:4af3ca173992	1170	static DMA_HandleTypeDef hdma_i2s_rx;
arostm	0:4af3ca173992	1171	GPIO_InitTypeDef gpio_init_structure;
arostm	0:4af3ca173992	1172
arostm	0:4af3ca173992	1173	/* Enable I2S clock */
arostm	0:4af3ca173992	1174	AUDIO_IN_I2Sx_CLK_ENABLE();
arostm	0:4af3ca173992	1175
arostm	0:4af3ca173992	1176	/* Enable MCK GPIO clock, needed by the codec */
arostm	0:4af3ca173992	1177	AUDIO_OUT_I2Sx_MCK_GPIO_CLK_ENABLE();
arostm	0:4af3ca173992	1178
arostm	0:4af3ca173992	1179	/* CODEC_I2S pins configuration: MCK pins */
arostm	0:4af3ca173992	1180	gpio_init_structure.Pin = AUDIO_OUT_I2Sx_MCK_PIN;
arostm	0:4af3ca173992	1181	gpio_init_structure.Mode = GPIO_MODE_AF_PP;
arostm	0:4af3ca173992	1182	gpio_init_structure.Pull = GPIO_NOPULL;
arostm	0:4af3ca173992	1183	gpio_init_structure.Speed = GPIO_SPEED_FAST;
arostm	0:4af3ca173992	1184	gpio_init_structure.Alternate = AUDIO_OUT_I2Sx_MCK_AF;
arostm	0:4af3ca173992	1185	HAL_GPIO_Init(AUDIO_OUT_I2Sx_MCK_GPIO_PORT, &gpio_init_structure);
arostm	0:4af3ca173992	1186
arostm	0:4af3ca173992	1187	/* Enable SD GPIO clock */
arostm	0:4af3ca173992	1188	AUDIO_IN_I2Sx_EXT_SD_GPIO_CLK_ENABLE();
arostm	0:4af3ca173992	1189	/* CODEC_I2S pin configuration: SD pin */
arostm	0:4af3ca173992	1190	gpio_init_structure.Pin = AUDIO_IN_I2Sx_EXT_SD_PIN;
arostm	0:4af3ca173992	1191	gpio_init_structure.Alternate = AUDIO_IN_I2Sx_EXT_SD_AF;
arostm	0:4af3ca173992	1192	HAL_GPIO_Init(AUDIO_IN_I2Sx_EXT_SD_GPIO_PORT, &gpio_init_structure);
arostm	0:4af3ca173992	1193
arostm	0:4af3ca173992	1194	/* Enable the DMA clock */
arostm	0:4af3ca173992	1195	AUDIO_IN_I2Sx_DMAx_CLK_ENABLE();
arostm	0:4af3ca173992	1196
arostm	0:4af3ca173992	1197	if(haudio_i2s.Instance == AUDIO_IN_I2Sx)
arostm	0:4af3ca173992	1198	{
arostm	0:4af3ca173992	1199	/* Configure the hdma_i2s_rx handle parameters */
arostm	0:4af3ca173992	1200	hdma_i2s_rx.Init.Channel = AUDIO_IN_I2Sx_DMAx_CHANNEL;
arostm	0:4af3ca173992	1201	hdma_i2s_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
arostm	0:4af3ca173992	1202	hdma_i2s_rx.Init.PeriphInc = DMA_PINC_DISABLE;
arostm	0:4af3ca173992	1203	hdma_i2s_rx.Init.MemInc = DMA_MINC_ENABLE;
arostm	0:4af3ca173992	1204	hdma_i2s_rx.Init.PeriphDataAlignment = AUDIO_IN_I2Sx_DMAx_PERIPH_DATA_SIZE;
arostm	0:4af3ca173992	1205	hdma_i2s_rx.Init.MemDataAlignment = AUDIO_IN_I2Sx_DMAx_MEM_DATA_SIZE;
arostm	0:4af3ca173992	1206	hdma_i2s_rx.Init.Mode = DMA_CIRCULAR;
arostm	0:4af3ca173992	1207	hdma_i2s_rx.Init.Priority = DMA_PRIORITY_HIGH;
arostm	0:4af3ca173992	1208	hdma_i2s_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
arostm	0:4af3ca173992	1209	hdma_i2s_rx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
arostm	0:4af3ca173992	1210	hdma_i2s_rx.Init.MemBurst = DMA_MBURST_SINGLE;
arostm	0:4af3ca173992	1211	hdma_i2s_rx.Init.PeriphBurst = DMA_MBURST_SINGLE;
arostm	0:4af3ca173992	1212
arostm	0:4af3ca173992	1213	hdma_i2s_rx.Instance = AUDIO_IN_I2Sx_DMAx_STREAM;
arostm	0:4af3ca173992	1214
arostm	0:4af3ca173992	1215	/* Associate the DMA handle */
arostm	0:4af3ca173992	1216	__HAL_LINKDMA(&haudio_i2s, hdmarx, hdma_i2s_rx);
arostm	0:4af3ca173992	1217
arostm	0:4af3ca173992	1218	/* Deinitialize the Stream for new transfer */
arostm	0:4af3ca173992	1219	HAL_DMA_DeInit(&hdma_i2s_rx);
arostm	0:4af3ca173992	1220
arostm	0:4af3ca173992	1221	/* Configure the DMA Stream */
arostm	0:4af3ca173992	1222	HAL_DMA_Init(&hdma_i2s_rx);
arostm	0:4af3ca173992	1223	}
arostm	0:4af3ca173992	1224
arostm	0:4af3ca173992	1225	/* I2S DMA IRQ Channel configuration */
arostm	0:4af3ca173992	1226	HAL_NVIC_SetPriority(AUDIO_IN_I2Sx_DMAx_IRQ, AUDIO_IN_IRQ_PREPRIO, 0);
arostm	0:4af3ca173992	1227	HAL_NVIC_EnableIRQ(AUDIO_IN_I2Sx_DMAx_IRQ);
arostm	0:4af3ca173992	1228	}
arostm	0:4af3ca173992	1229
arostm	0:4af3ca173992	1230	/**
arostm	0:4af3ca173992	1231	* @brief De-Initializes the I2S MSP.
arostm	0:4af3ca173992	1232	*/
arostm	0:4af3ca173992	1233	static void I2Sx_In_MspDeInit(void)
arostm	0:4af3ca173992	1234	{
arostm	0:4af3ca173992	1235	GPIO_InitTypeDef gpio_init_structure;
arostm	0:4af3ca173992	1236
arostm	0:4af3ca173992	1237	/* I2S DMA IRQ Channel deactivation */
arostm	0:4af3ca173992	1238	HAL_NVIC_DisableIRQ(AUDIO_IN_I2Sx_DMAx_IRQ);
arostm	0:4af3ca173992	1239
arostm	0:4af3ca173992	1240	if(haudio_i2s.Instance == AUDIO_IN_I2Sx)
arostm	0:4af3ca173992	1241	{
arostm	0:4af3ca173992	1242	/* Deinitialize the DMA stream */
arostm	0:4af3ca173992	1243	HAL_DMA_DeInit(haudio_i2s.hdmarx);
arostm	0:4af3ca173992	1244	}
arostm	0:4af3ca173992	1245
arostm	0:4af3ca173992	1246	/* Disable I2S peripheral */
arostm	0:4af3ca173992	1247	__HAL_I2S_DISABLE(&haudio_i2s);
arostm	0:4af3ca173992	1248
arostm	0:4af3ca173992	1249	/* Deactives CODEC_I2S pins MCK by putting them in input mode */
arostm	0:4af3ca173992	1250	gpio_init_structure.Pin = AUDIO_OUT_I2Sx_MCK_PIN;
arostm	0:4af3ca173992	1251	HAL_GPIO_DeInit(AUDIO_OUT_I2Sx_MCK_GPIO_PORT, gpio_init_structure.Pin);
arostm	0:4af3ca173992	1252
arostm	0:4af3ca173992	1253	gpio_init_structure.Pin = AUDIO_IN_I2Sx_EXT_SD_PIN;
arostm	0:4af3ca173992	1254	HAL_GPIO_DeInit(AUDIO_IN_I2Sx_EXT_SD_GPIO_PORT, gpio_init_structure.Pin);
arostm	0:4af3ca173992	1255
arostm	0:4af3ca173992	1256	/* Disable I2S clock */
arostm	0:4af3ca173992	1257	AUDIO_IN_I2Sx_CLK_DISABLE();
arostm	0:4af3ca173992	1258	}
arostm	0:4af3ca173992	1259
arostm	0:4af3ca173992	1260	/**
arostm	0:4af3ca173992	1261	* @brief Initializes BSP_AUDIO_IN MSP.
arostm	0:4af3ca173992	1262	* @param Params : pointer on additional configuration parameters, can be NULL.
arostm	0:4af3ca173992	1263	*/
arostm	0:4af3ca173992	1264	__weak void BSP_AUDIO_IN_MspInit(void *Params)
arostm	0:4af3ca173992	1265	{
arostm	0:4af3ca173992	1266	/* Prevent unused argument(s) compilation warning */
arostm	0:4af3ca173992	1267	UNUSED(Params);
arostm	0:4af3ca173992	1268
arostm	0:4af3ca173992	1269	if(hAudioIn.InputDevice == INPUT_DEVICE_ANALOG_MIC)
arostm	0:4af3ca173992	1270	{
arostm	0:4af3ca173992	1271	I2Sx_In_MspInit();
arostm	0:4af3ca173992	1272	}
arostm	0:4af3ca173992	1273	else
arostm	0:4af3ca173992	1274	{
arostm	0:4af3ca173992	1275	/* MSP channels initialization */
arostm	0:4af3ca173992	1276	DFSDMx_ChannelMspInit();
arostm	0:4af3ca173992	1277
arostm	0:4af3ca173992	1278	/* MSP filters initialization */
arostm	0:4af3ca173992	1279	DFSDMx_FilterMspInit();
arostm	0:4af3ca173992	1280	}
arostm	0:4af3ca173992	1281	}
arostm	0:4af3ca173992	1282
arostm	0:4af3ca173992	1283	/**
arostm	0:4af3ca173992	1284	* @brief De-Initializes BSP_AUDIO_IN MSP.
arostm	0:4af3ca173992	1285	* @param Params : pointer on additional configuration parameters, can be NULL.
arostm	0:4af3ca173992	1286	*/
arostm	0:4af3ca173992	1287	__weak void BSP_AUDIO_IN_MspDeInit(void *Params)
arostm	0:4af3ca173992	1288	{
arostm	0:4af3ca173992	1289	/* Prevent unused argument(s) compilation warning */
arostm	0:4af3ca173992	1290	UNUSED(Params);
arostm	0:4af3ca173992	1291
arostm	0:4af3ca173992	1292	if(hAudioIn.InputDevice == INPUT_DEVICE_ANALOG_MIC)
arostm	0:4af3ca173992	1293	{
arostm	0:4af3ca173992	1294	I2Sx_In_MspDeInit();
arostm	0:4af3ca173992	1295	}
arostm	0:4af3ca173992	1296	else
arostm	0:4af3ca173992	1297	{
arostm	0:4af3ca173992	1298	/* MSP channels initialization */
arostm	0:4af3ca173992	1299	DFSDMx_ChannelMspDeInit();
arostm	0:4af3ca173992	1300
arostm	0:4af3ca173992	1301	/* MSP filters initialization */
arostm	0:4af3ca173992	1302	DFSDMx_FilterMspDeInit();
arostm	0:4af3ca173992	1303	}
arostm	0:4af3ca173992	1304	}
arostm	0:4af3ca173992	1305
arostm	0:4af3ca173992	1306	/**
arostm	0:4af3ca173992	1307	* @brief Clock Config.
arostm	0:4af3ca173992	1308	* @param AudioFreq: Audio frequency used to play the audio stream.
arostm	0:4af3ca173992	1309	* @param Params : pointer on additional configuration parameters, can be NULL.
arostm	0:4af3ca173992	1310	* @note This API is called by BSP_AUDIO_OUT_Init() and BSP_AUDIO_OUT_SetFrequency()
arostm	0:4af3ca173992	1311	* Being __weak it can be overwritten by the application
arostm	0:4af3ca173992	1312	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1313	*/
arostm	0:4af3ca173992	1314	__weak uint8_t BSP_AUDIO_IN_ClockConfig(uint32_t AudioFreq, void *Params)
arostm	0:4af3ca173992	1315	{
arostm	0:4af3ca173992	1316	RCC_PeriphCLKInitTypeDef rcc_ex_clk_init_struct;
arostm	0:4af3ca173992	1317
arostm	0:4af3ca173992	1318	/* Prevent unused argument(s) compilation warning */
arostm	0:4af3ca173992	1319	UNUSED(Params);
arostm	0:4af3ca173992	1320
arostm	0:4af3ca173992	1321	HAL_RCCEx_GetPeriphCLKConfig(&rcc_ex_clk_init_struct);
arostm	0:4af3ca173992	1322
arostm	0:4af3ca173992	1323	/* Set the PLL configuration according to the audio frequency */
arostm	0:4af3ca173992	1324	if((AudioFreq == AUDIO_FREQUENCY_11K) \|\| (AudioFreq == AUDIO_FREQUENCY_22K) \|\| (AudioFreq == AUDIO_FREQUENCY_44K))
arostm	0:4af3ca173992	1325	{
arostm	0:4af3ca173992	1326	/* Configure PLLI2S prescalers */
arostm	0:4af3ca173992	1327	rcc_ex_clk_init_struct.PeriphClockSelection = (RCC_PERIPHCLK_I2S_APB1 \| RCC_PERIPHCLK_DFSDM \| RCC_PERIPHCLK_DFSDM2);
arostm	0:4af3ca173992	1328	rcc_ex_clk_init_struct.I2sApb1ClockSelection = RCC_I2SAPB1CLKSOURCE_PLLI2S;
arostm	0:4af3ca173992	1329	rcc_ex_clk_init_struct.Dfsdm1ClockSelection = RCC_DFSDM1CLKSOURCE_APB2;
arostm	0:4af3ca173992	1330	rcc_ex_clk_init_struct.Dfsdm2ClockSelection = RCC_DFSDM2CLKSOURCE_APB2;
arostm	0:4af3ca173992	1331	rcc_ex_clk_init_struct.PLLI2SSelection = RCC_PLLI2SCLKSOURCE_PLLSRC;
arostm	0:4af3ca173992	1332	rcc_ex_clk_init_struct.PLLI2S.PLLI2SM = 8;
arostm	0:4af3ca173992	1333	rcc_ex_clk_init_struct.PLLI2S.PLLI2SN = 271;
arostm	0:4af3ca173992	1334	rcc_ex_clk_init_struct.PLLI2S.PLLI2SR = 2;
arostm	0:4af3ca173992	1335
arostm	0:4af3ca173992	1336	HAL_RCCEx_PeriphCLKConfig(&rcc_ex_clk_init_struct);
arostm	0:4af3ca173992	1337	}
arostm	0:4af3ca173992	1338	else if(AudioFreq == AUDIO_FREQUENCY_96K)
arostm	0:4af3ca173992	1339	{
arostm	0:4af3ca173992	1340	/* I2S clock config */
arostm	0:4af3ca173992	1341	rcc_ex_clk_init_struct.PeriphClockSelection = (RCC_PERIPHCLK_I2S_APB1 \| RCC_PERIPHCLK_DFSDM \| RCC_PERIPHCLK_DFSDM2);
arostm	0:4af3ca173992	1342	rcc_ex_clk_init_struct.I2sApb1ClockSelection = RCC_I2SAPB1CLKSOURCE_PLLI2S;
arostm	0:4af3ca173992	1343	rcc_ex_clk_init_struct.Dfsdm1ClockSelection = RCC_DFSDM1CLKSOURCE_APB2;
arostm	0:4af3ca173992	1344	rcc_ex_clk_init_struct.Dfsdm2ClockSelection = RCC_DFSDM2CLKSOURCE_APB2;
arostm	0:4af3ca173992	1345	rcc_ex_clk_init_struct.PLLI2SSelection = RCC_PLLI2SCLKSOURCE_PLLSRC;
arostm	0:4af3ca173992	1346	rcc_ex_clk_init_struct.PLLI2S.PLLI2SM = 8;
arostm	0:4af3ca173992	1347	rcc_ex_clk_init_struct.PLLI2S.PLLI2SN = 344;
arostm	0:4af3ca173992	1348	rcc_ex_clk_init_struct.PLLI2S.PLLI2SR = 2;
arostm	0:4af3ca173992	1349
arostm	0:4af3ca173992	1350	HAL_RCCEx_PeriphCLKConfig(&rcc_ex_clk_init_struct);
arostm	0:4af3ca173992	1351	}
arostm	0:4af3ca173992	1352	else /* AUDIO_FREQUENCY_8K, AUDIO_FREQUENCY_16K, AUDIO_FREQUENCY_32K, AUDIO_FREQUENCY_48K */
arostm	0:4af3ca173992	1353	{
arostm	0:4af3ca173992	1354	/* I2S clock config
arostm	0:4af3ca173992	1355	PLLI2S_VCO: VCO_344M
arostm	0:4af3ca173992	1356	I2S_CLK(first level) = PLLI2S_VCO/PLLI2SR = 344/7 = 49.142 Mhz
arostm	0:4af3ca173992	1357	I2S_CLK_x = I2S_CLK(first level)/PLLI2SDIVR = 49.142/1 = 49.142 Mhz */
arostm	0:4af3ca173992	1358	rcc_ex_clk_init_struct.PeriphClockSelection = (RCC_PERIPHCLK_I2S_APB1 \| RCC_PERIPHCLK_DFSDM \| RCC_PERIPHCLK_DFSDM2);
arostm	0:4af3ca173992	1359	rcc_ex_clk_init_struct.I2sApb1ClockSelection = RCC_I2SAPB1CLKSOURCE_PLLI2S;
arostm	0:4af3ca173992	1360	rcc_ex_clk_init_struct.DfsdmClockSelection = RCC_DFSDM1CLKSOURCE_APB2\|RCC_DFSDM2CLKSOURCE_APB2;
arostm	0:4af3ca173992	1361	rcc_ex_clk_init_struct.PLLI2SSelection = RCC_PLLI2SCLKSOURCE_PLLSRC;
arostm	0:4af3ca173992	1362	rcc_ex_clk_init_struct.PLLI2S.PLLI2SM = 8;
arostm	0:4af3ca173992	1363	rcc_ex_clk_init_struct.PLLI2S.PLLI2SN = 344;
arostm	0:4af3ca173992	1364	rcc_ex_clk_init_struct.PLLI2S.PLLI2SR = 7;
arostm	0:4af3ca173992	1365
arostm	0:4af3ca173992	1366	HAL_RCCEx_PeriphCLKConfig(&rcc_ex_clk_init_struct);
arostm	0:4af3ca173992	1367	}
arostm	0:4af3ca173992	1368
arostm	0:4af3ca173992	1369	if(hAudioIn.InputDevice != INPUT_DEVICE_ANALOG_MIC)
arostm	0:4af3ca173992	1370	{
arostm	0:4af3ca173992	1371	/* I2S_APB1 selected as DFSDM audio clock source */
arostm	0:4af3ca173992	1372	__HAL_RCC_DFSDM1AUDIO_CONFIG(RCC_DFSDM1AUDIOCLKSOURCE_I2SAPB1);
arostm	0:4af3ca173992	1373	/* I2S_APB1 selected as DFSDM audio clock source */
arostm	0:4af3ca173992	1374	__HAL_RCC_DFSDM2AUDIO_CONFIG(RCC_DFSDM2AUDIOCLKSOURCE_I2SAPB1);
arostm	0:4af3ca173992	1375	}
arostm	0:4af3ca173992	1376
arostm	0:4af3ca173992	1377	return AUDIO_OK;
arostm	0:4af3ca173992	1378	}
arostm	0:4af3ca173992	1379
arostm	0:4af3ca173992	1380	/**
arostm	0:4af3ca173992	1381	* @brief Regular conversion complete callback.
arostm	0:4af3ca173992	1382	* @note In interrupt mode, user has to read conversion value in this function
arostm	0:4af3ca173992	1383	using HAL_DFSDM_FilterGetRegularValue.
arostm	0:4af3ca173992	1384	* @param hdfsdm_filter : DFSDM filter handle.
arostm	0:4af3ca173992	1385	*/
arostm	0:4af3ca173992	1386	void HAL_DFSDM_FilterRegConvCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
arostm	0:4af3ca173992	1387	{
arostm	0:4af3ca173992	1388	uint32_t index, input_device = 0;
arostm	0:4af3ca173992	1389
arostm	0:4af3ca173992	1390	if(hdfsdm_filter->Instance == AUDIO_DFSDMx_MIC1_FILTER)
arostm	0:4af3ca173992	1391	{
arostm	0:4af3ca173992	1392	DmaRecBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)] = 1;
arostm	0:4af3ca173992	1393	input_device = INPUT_DEVICE_DIGITAL_MIC1;
arostm	0:4af3ca173992	1394	}
arostm	0:4af3ca173992	1395	else if(hdfsdm_filter->Instance == AUDIO_DFSDMx_MIC2_FILTER)
arostm	0:4af3ca173992	1396	{
arostm	0:4af3ca173992	1397	DmaRecBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)] = 1;
arostm	0:4af3ca173992	1398	input_device = INPUT_DEVICE_DIGITAL_MIC2;
arostm	0:4af3ca173992	1399	}
arostm	0:4af3ca173992	1400	else if(hdfsdm_filter->Instance == AUDIO_DFSDMx_MIC3_FILTER)
arostm	0:4af3ca173992	1401	{
arostm	0:4af3ca173992	1402	input_device = INPUT_DEVICE_DIGITAL_MIC3;
arostm	0:4af3ca173992	1403	}
arostm	0:4af3ca173992	1404	else if(hdfsdm_filter->Instance == AUDIO_DFSDMx_MIC4_FILTER)
arostm	0:4af3ca173992	1405	{
arostm	0:4af3ca173992	1406	input_device = INPUT_DEVICE_DIGITAL_MIC4;
arostm	0:4af3ca173992	1407	}
arostm	0:4af3ca173992	1408	else if(hdfsdm_filter->Instance == AUDIO_DFSDMx_MIC5_FILTER)
arostm	0:4af3ca173992	1409	{
arostm	0:4af3ca173992	1410	input_device = INPUT_DEVICE_DIGITAL_MIC5;
arostm	0:4af3ca173992	1411	}
arostm	0:4af3ca173992	1412
arostm	0:4af3ca173992	1413	if(hAudioIn.MultiBuffMode == 1)
arostm	0:4af3ca173992	1414	{
arostm	0:4af3ca173992	1415	BSP_AUDIO_IN_TransferComplete_CallBackEx(input_device);
arostm	0:4af3ca173992	1416	}
arostm	0:4af3ca173992	1417	else
arostm	0:4af3ca173992	1418	{
arostm	0:4af3ca173992	1419	if((DmaRecBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)] == 1) && (DmaRecBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)] == 1))
arostm	0:4af3ca173992	1420	{
arostm	0:4af3ca173992	1421	if(AppBuffTrigger >= hAudioIn.RecSize)
arostm	0:4af3ca173992	1422	AppBuffTrigger = 0;
arostm	0:4af3ca173992	1423
arostm	0:4af3ca173992	1424	for(index = (ScratchSize/2) ; index < ScratchSize; index++)
arostm	0:4af3ca173992	1425	{
arostm	0:4af3ca173992	1426	hAudioIn.pRecBuf[AppBuffTrigger] = (uint16_t)(SaturaLH((pScratchBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)][index] >> 8), -32760, 32760));
arostm	0:4af3ca173992	1427	hAudioIn.pRecBuf[AppBuffTrigger + 1] = (uint16_t)(SaturaLH((pScratchBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)][index] >> 8), -32760, 32760));
arostm	0:4af3ca173992	1428	AppBuffTrigger += 2;
arostm	0:4af3ca173992	1429	}
arostm	0:4af3ca173992	1430	DmaRecBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)] = DmaRecBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)] = 0;
arostm	0:4af3ca173992	1431	}
arostm	0:4af3ca173992	1432
arostm	0:4af3ca173992	1433	/* Update Trigger with Remaining Byte before callback if necessary */
arostm	0:4af3ca173992	1434	if(AppBuffTrigger >= hAudioIn.RecSize)
arostm	0:4af3ca173992	1435	{
arostm	0:4af3ca173992	1436	/* Reset Application Buffer Trigger */
arostm	0:4af3ca173992	1437	AppBuffTrigger = 0;
arostm	0:4af3ca173992	1438	AppBuffHalf = 0;
arostm	0:4af3ca173992	1439
arostm	0:4af3ca173992	1440	/* Call the record update function to get the next buffer to fill and its size (size is ignored) */
arostm	0:4af3ca173992	1441	BSP_AUDIO_IN_TransferComplete_CallBack();
arostm	0:4af3ca173992	1442	}
arostm	0:4af3ca173992	1443	else if((AppBuffTrigger >= hAudioIn.RecSize/2))
arostm	0:4af3ca173992	1444	{
arostm	0:4af3ca173992	1445	if(AppBuffHalf == 0)
arostm	0:4af3ca173992	1446	{
arostm	0:4af3ca173992	1447	AppBuffHalf = 1;
arostm	0:4af3ca173992	1448	/* Manage the remaining file size and new address offset: This function
arostm	0:4af3ca173992	1449	should be coded by user (its prototype is already declared in stm32l476g_eval_audio.h) */
arostm	0:4af3ca173992	1450	BSP_AUDIO_IN_HalfTransfer_CallBack();
arostm	0:4af3ca173992	1451	}
arostm	0:4af3ca173992	1452	}
arostm	0:4af3ca173992	1453	}
arostm	0:4af3ca173992	1454	}
arostm	0:4af3ca173992	1455
arostm	0:4af3ca173992	1456	/**
arostm	0:4af3ca173992	1457	* @brief Half regular conversion complete callback.
arostm	0:4af3ca173992	1458	* @param hdfsdm_filter : DFSDM filter handle.
arostm	0:4af3ca173992	1459	*/
arostm	0:4af3ca173992	1460	void HAL_DFSDM_FilterRegConvHalfCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
arostm	0:4af3ca173992	1461	{
arostm	0:4af3ca173992	1462	uint32_t index, input_device = 0;
arostm	0:4af3ca173992	1463
arostm	0:4af3ca173992	1464	if(hdfsdm_filter->Instance == AUDIO_DFSDMx_MIC1_FILTER)
arostm	0:4af3ca173992	1465	{
arostm	0:4af3ca173992	1466	DmaRecHalfBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)] = 1;
arostm	0:4af3ca173992	1467	input_device = INPUT_DEVICE_DIGITAL_MIC1;
arostm	0:4af3ca173992	1468	}
arostm	0:4af3ca173992	1469	else if(hdfsdm_filter->Instance == AUDIO_DFSDMx_MIC2_FILTER)
arostm	0:4af3ca173992	1470	{
arostm	0:4af3ca173992	1471	DmaRecHalfBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)] = 1;
arostm	0:4af3ca173992	1472	input_device = INPUT_DEVICE_DIGITAL_MIC2;
arostm	0:4af3ca173992	1473	}
arostm	0:4af3ca173992	1474	else if(hdfsdm_filter->Instance == AUDIO_DFSDMx_MIC3_FILTER)
arostm	0:4af3ca173992	1475	{
arostm	0:4af3ca173992	1476	input_device = INPUT_DEVICE_DIGITAL_MIC3;
arostm	0:4af3ca173992	1477	}
arostm	0:4af3ca173992	1478	else if(hdfsdm_filter->Instance == AUDIO_DFSDMx_MIC4_FILTER)
arostm	0:4af3ca173992	1479	{
arostm	0:4af3ca173992	1480	input_device = INPUT_DEVICE_DIGITAL_MIC4;
arostm	0:4af3ca173992	1481	}
arostm	0:4af3ca173992	1482	else if(hdfsdm_filter->Instance == AUDIO_DFSDMx_MIC5_FILTER)
arostm	0:4af3ca173992	1483	{
arostm	0:4af3ca173992	1484	input_device = INPUT_DEVICE_DIGITAL_MIC5;
arostm	0:4af3ca173992	1485	}
arostm	0:4af3ca173992	1486
arostm	0:4af3ca173992	1487	if(hAudioIn.MultiBuffMode == 1)
arostm	0:4af3ca173992	1488	{
arostm	0:4af3ca173992	1489	BSP_AUDIO_IN_HalfTransfer_CallBackEx(input_device);
arostm	0:4af3ca173992	1490	}
arostm	0:4af3ca173992	1491	else
arostm	0:4af3ca173992	1492	{
arostm	0:4af3ca173992	1493	if((DmaRecHalfBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)] == 1) && (DmaRecHalfBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)] == 1))
arostm	0:4af3ca173992	1494	{
arostm	0:4af3ca173992	1495	if(AppBuffTrigger >= hAudioIn.RecSize)
arostm	0:4af3ca173992	1496	AppBuffTrigger = 0;
arostm	0:4af3ca173992	1497
arostm	0:4af3ca173992	1498	for(index = 0; index < ScratchSize/2; index++)
arostm	0:4af3ca173992	1499	{
arostm	0:4af3ca173992	1500	hAudioIn.pRecBuf[AppBuffTrigger] = (int16_t)(SaturaLH((pScratchBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)][index] >> 8), -32760, 32760));
arostm	0:4af3ca173992	1501	hAudioIn.pRecBuf[AppBuffTrigger + 1] = (int16_t)(SaturaLH((pScratchBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)][index] >> 8), -32760, 32760));
arostm	0:4af3ca173992	1502	AppBuffTrigger += 2;
arostm	0:4af3ca173992	1503	}
arostm	0:4af3ca173992	1504	DmaRecHalfBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)] = DmaRecHalfBuffCplt[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)] = 0;
arostm	0:4af3ca173992	1505	}
arostm	0:4af3ca173992	1506
arostm	0:4af3ca173992	1507
arostm	0:4af3ca173992	1508	/* Update Trigger with Remaining Byte before callback if necessary */
arostm	0:4af3ca173992	1509	if(AppBuffTrigger >= hAudioIn.RecSize)
arostm	0:4af3ca173992	1510	{
arostm	0:4af3ca173992	1511	/* Reset Application Buffer Trigger */
arostm	0:4af3ca173992	1512	AppBuffTrigger = 0;
arostm	0:4af3ca173992	1513	AppBuffHalf = 0;
arostm	0:4af3ca173992	1514
arostm	0:4af3ca173992	1515	/* Call the record update function to get the next buffer to fill and its size (size is ignored) */
arostm	0:4af3ca173992	1516	BSP_AUDIO_IN_TransferComplete_CallBack();
arostm	0:4af3ca173992	1517	}
arostm	0:4af3ca173992	1518	else if((AppBuffTrigger >= hAudioIn.RecSize/2))
arostm	0:4af3ca173992	1519	{
arostm	0:4af3ca173992	1520	if(AppBuffHalf == 0)
arostm	0:4af3ca173992	1521	{
arostm	0:4af3ca173992	1522	AppBuffHalf = 1;
arostm	0:4af3ca173992	1523	/* Manage the remaining file size and new address offset: This function
arostm	0:4af3ca173992	1524	should be coded by user */
arostm	0:4af3ca173992	1525	BSP_AUDIO_IN_HalfTransfer_CallBack();
arostm	0:4af3ca173992	1526	}
arostm	0:4af3ca173992	1527	}
arostm	0:4af3ca173992	1528	}
arostm	0:4af3ca173992	1529	}
arostm	0:4af3ca173992	1530
arostm	0:4af3ca173992	1531	/**
arostm	0:4af3ca173992	1532	* @brief Half reception complete callback.
arostm	0:4af3ca173992	1533	* @param hi2s : I2S handle.
arostm	0:4af3ca173992	1534	*/
arostm	0:4af3ca173992	1535	void HAL_I2S_RxHalfCpltCallback(I2S_HandleTypeDef *hi2s)
arostm	0:4af3ca173992	1536	{
arostm	0:4af3ca173992	1537	/* Manage the remaining file size and new address offset: This function
arostm	0:4af3ca173992	1538	should be coded by user (its prototype is already declared in stm32746g_discovery_audio.h) */
arostm	0:4af3ca173992	1539	BSP_AUDIO_IN_HalfTransfer_CallBack();
arostm	0:4af3ca173992	1540	}
arostm	0:4af3ca173992	1541
arostm	0:4af3ca173992	1542	/**
arostm	0:4af3ca173992	1543	* @brief Reception complete callback.
arostm	0:4af3ca173992	1544	* @param hi2s : I2S handle.
arostm	0:4af3ca173992	1545	*/
arostm	0:4af3ca173992	1546	void HAL_I2S_RxCpltCallback(I2S_HandleTypeDef *hi2s)
arostm	0:4af3ca173992	1547	{
arostm	0:4af3ca173992	1548	/* Call the record update function to get the next buffer to fill and its size (size is ignored) */
arostm	0:4af3ca173992	1549	BSP_AUDIO_IN_TransferComplete_CallBack();
arostm	0:4af3ca173992	1550	}
arostm	0:4af3ca173992	1551
arostm	0:4af3ca173992	1552	/**
arostm	0:4af3ca173992	1553	* @brief Stops audio recording.
arostm	0:4af3ca173992	1554	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1555	*/
arostm	0:4af3ca173992	1556	uint8_t BSP_AUDIO_IN_Stop(void)
arostm	0:4af3ca173992	1557	{
arostm	0:4af3ca173992	1558	AppBuffTrigger = 0;
arostm	0:4af3ca173992	1559	AppBuffHalf = 0;
arostm	0:4af3ca173992	1560
arostm	0:4af3ca173992	1561	if (hAudioIn.InputDevice == INPUT_DEVICE_ANALOG_MIC)
arostm	0:4af3ca173992	1562	{
arostm	0:4af3ca173992	1563	/* Call the Media layer stop function */
arostm	0:4af3ca173992	1564	if(HAL_OK != HAL_I2S_DMAStop(&haudio_i2s))
arostm	0:4af3ca173992	1565	{
arostm	0:4af3ca173992	1566	return AUDIO_ERROR;
arostm	0:4af3ca173992	1567	}
arostm	0:4af3ca173992	1568	/* Call Audio Codec Stop function */
arostm	0:4af3ca173992	1569	if(audio_drv->Stop(AUDIO_I2C_ADDRESS, CODEC_PDWN_HW) != 0)
arostm	0:4af3ca173992	1570	{
arostm	0:4af3ca173992	1571	return AUDIO_ERROR;
arostm	0:4af3ca173992	1572	}
arostm	0:4af3ca173992	1573	/* Wait at least 100us */
arostm	0:4af3ca173992	1574	HAL_Delay(1);
arostm	0:4af3ca173992	1575	}
arostm	0:4af3ca173992	1576	else /* InputDevice = Digital Mic */
arostm	0:4af3ca173992	1577	{
arostm	0:4af3ca173992	1578	/* Call the Media layer stop function for MIC1 channel */
arostm	0:4af3ca173992	1579	if(AUDIO_OK != BSP_AUDIO_IN_PauseEx(INPUT_DEVICE_DIGITAL_MIC1))
arostm	0:4af3ca173992	1580	{
arostm	0:4af3ca173992	1581	return AUDIO_ERROR;
arostm	0:4af3ca173992	1582	}
arostm	0:4af3ca173992	1583
arostm	0:4af3ca173992	1584	/* Call the Media layer stop function for MIC2 channel */
arostm	0:4af3ca173992	1585	if(AUDIO_OK != BSP_AUDIO_IN_PauseEx(INPUT_DEVICE_DIGITAL_MIC2))
arostm	0:4af3ca173992	1586	{
arostm	0:4af3ca173992	1587	return AUDIO_ERROR;
arostm	0:4af3ca173992	1588	}
arostm	0:4af3ca173992	1589	}
arostm	0:4af3ca173992	1590
arostm	0:4af3ca173992	1591	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	1592	return AUDIO_OK;
arostm	0:4af3ca173992	1593	}
arostm	0:4af3ca173992	1594
arostm	0:4af3ca173992	1595	/**
arostm	0:4af3ca173992	1596	* @brief Stops audio recording.
arostm	0:4af3ca173992	1597	* @param InputDevice: Microphone to be stopped. Can be INPUT_DEVICE_DIGITAL_MIC1 .. INPUT_DEVICE_DIGITAL_MIC5.
arostm	0:4af3ca173992	1598	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1599	*/
arostm	0:4af3ca173992	1600	uint8_t BSP_AUDIO_IN_StopEx(uint32_t InputDevice)
arostm	0:4af3ca173992	1601	{
arostm	0:4af3ca173992	1602	if((InputDevice < INPUT_DEVICE_DIGITAL_MIC1) \|\| (InputDevice > INPUT_DEVICE_DIGITAL_MIC5))
arostm	0:4af3ca173992	1603	{
arostm	0:4af3ca173992	1604	return AUDIO_ERROR;
arostm	0:4af3ca173992	1605	}
arostm	0:4af3ca173992	1606	else
arostm	0:4af3ca173992	1607	{
arostm	0:4af3ca173992	1608	BSP_AUDIO_IN_PauseEx(InputDevice);
arostm	0:4af3ca173992	1609	}
arostm	0:4af3ca173992	1610
arostm	0:4af3ca173992	1611	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	1612	return AUDIO_OK;
arostm	0:4af3ca173992	1613	}
arostm	0:4af3ca173992	1614
arostm	0:4af3ca173992	1615	/**
arostm	0:4af3ca173992	1616	* @brief Pauses the audio file stream.
arostm	0:4af3ca173992	1617	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1618	*/
arostm	0:4af3ca173992	1619	uint8_t BSP_AUDIO_IN_Pause(void)
arostm	0:4af3ca173992	1620	{
arostm	0:4af3ca173992	1621	if (hAudioIn.InputDevice == INPUT_DEVICE_ANALOG_MIC)
arostm	0:4af3ca173992	1622	{
arostm	0:4af3ca173992	1623	return AUDIO_ERROR;
arostm	0:4af3ca173992	1624	}
arostm	0:4af3ca173992	1625	else
arostm	0:4af3ca173992	1626	{
arostm	0:4af3ca173992	1627	/* Call the Media layer stop function */
arostm	0:4af3ca173992	1628	if(HAL_OK != HAL_DFSDM_FilterRegularStop_DMA(&hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)]))
arostm	0:4af3ca173992	1629	{
arostm	0:4af3ca173992	1630	return AUDIO_ERROR;
arostm	0:4af3ca173992	1631	}
arostm	0:4af3ca173992	1632
arostm	0:4af3ca173992	1633	/* Call the Media layer stop function */
arostm	0:4af3ca173992	1634	if(HAL_OK != HAL_DFSDM_FilterRegularStop_DMA(&hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)]))
arostm	0:4af3ca173992	1635	{
arostm	0:4af3ca173992	1636	return AUDIO_ERROR;
arostm	0:4af3ca173992	1637	}
arostm	0:4af3ca173992	1638	}
arostm	0:4af3ca173992	1639	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	1640	return AUDIO_OK;
arostm	0:4af3ca173992	1641	}
arostm	0:4af3ca173992	1642
arostm	0:4af3ca173992	1643	/**
arostm	0:4af3ca173992	1644	* @brief Pauses the audio file stream.
arostm	0:4af3ca173992	1645	* @param InputDevice: Microphone to be paused. Can be INPUT_DEVICE_DIGITAL_MIC1 .. INPUT_DEVICE_DIGITAL_MIC5.
arostm	0:4af3ca173992	1646	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1647	*/
arostm	0:4af3ca173992	1648	uint8_t BSP_AUDIO_IN_PauseEx(uint32_t InputDevice)
arostm	0:4af3ca173992	1649	{
arostm	0:4af3ca173992	1650	if((InputDevice < INPUT_DEVICE_DIGITAL_MIC1) \|\| (InputDevice > INPUT_DEVICE_DIGITAL_MIC5))
arostm	0:4af3ca173992	1651	{
arostm	0:4af3ca173992	1652	return AUDIO_ERROR;
arostm	0:4af3ca173992	1653	}
arostm	0:4af3ca173992	1654	else
arostm	0:4af3ca173992	1655	{
arostm	0:4af3ca173992	1656	/* Call the Media layer stop function */
arostm	0:4af3ca173992	1657	if(HAL_OK != HAL_DFSDM_FilterRegularStop_DMA(&hAudioInDfsdmFilter[POS_VAL(InputDevice)]))
arostm	0:4af3ca173992	1658	{
arostm	0:4af3ca173992	1659	return AUDIO_ERROR;
arostm	0:4af3ca173992	1660	}
arostm	0:4af3ca173992	1661	}
arostm	0:4af3ca173992	1662	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	1663	return AUDIO_OK;
arostm	0:4af3ca173992	1664	}
arostm	0:4af3ca173992	1665
arostm	0:4af3ca173992	1666	/**
arostm	0:4af3ca173992	1667	* @brief Resumes the audio file stream.
arostm	0:4af3ca173992	1668	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1669	*/
arostm	0:4af3ca173992	1670	uint8_t BSP_AUDIO_IN_Resume(void)
arostm	0:4af3ca173992	1671	{
arostm	0:4af3ca173992	1672	if (hAudioIn.InputDevice == INPUT_DEVICE_ANALOG_MIC)
arostm	0:4af3ca173992	1673	{
arostm	0:4af3ca173992	1674	return AUDIO_ERROR;
arostm	0:4af3ca173992	1675	}
arostm	0:4af3ca173992	1676	else
arostm	0:4af3ca173992	1677	{
arostm	0:4af3ca173992	1678	/* Call the Media layer start function for MIC2 channel */
arostm	0:4af3ca173992	1679	if(HAL_OK != HAL_DFSDM_FilterRegularStart_DMA(&hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)], pScratchBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)], ScratchSize))
arostm	0:4af3ca173992	1680	{
arostm	0:4af3ca173992	1681	return AUDIO_ERROR;
arostm	0:4af3ca173992	1682	}
arostm	0:4af3ca173992	1683
arostm	0:4af3ca173992	1684	/* Call the Media layer start function for MIC1 channel */
arostm	0:4af3ca173992	1685	if(HAL_OK != HAL_DFSDM_FilterRegularStart_DMA(&hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)], pScratchBuff[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)], ScratchSize))
arostm	0:4af3ca173992	1686	{
arostm	0:4af3ca173992	1687	return AUDIO_ERROR;
arostm	0:4af3ca173992	1688	}
arostm	0:4af3ca173992	1689	}
arostm	0:4af3ca173992	1690	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	1691	return AUDIO_OK;
arostm	0:4af3ca173992	1692	}
arostm	0:4af3ca173992	1693
arostm	0:4af3ca173992	1694	/**
arostm	0:4af3ca173992	1695	* @brief Resumes the audio file stream.
arostm	0:4af3ca173992	1696	* @param pBuf: Main buffer pointer for the recorded data storing
arostm	0:4af3ca173992	1697	* @param InputDevice: Microphone to be paused. Can be INPUT_DEVICE_DIGITAL_MIC1 .. INPUT_DEVICE_DIGITAL_MIC5.
arostm	0:4af3ca173992	1698	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1699	*/
arostm	0:4af3ca173992	1700	uint8_t BSP_AUDIO_IN_ResumeEx(uint32_t *pBuf, uint32_t InputDevice)
arostm	0:4af3ca173992	1701	{
arostm	0:4af3ca173992	1702	if((InputDevice < INPUT_DEVICE_DIGITAL_MIC1) \|\| (InputDevice > INPUT_DEVICE_DIGITAL_MIC5))
arostm	0:4af3ca173992	1703	{
arostm	0:4af3ca173992	1704	return AUDIO_ERROR;
arostm	0:4af3ca173992	1705	}
arostm	0:4af3ca173992	1706	else
arostm	0:4af3ca173992	1707	{
arostm	0:4af3ca173992	1708	/* Call the Media layer stop function */
arostm	0:4af3ca173992	1709	if(HAL_OK != HAL_DFSDM_FilterRegularStart_DMA(&hAudioInDfsdmFilter[POS_VAL(InputDevice)], (int32_t*)pBuf[MicBuff[POS_VAL(InputDevice)]], hAudioIn.RecSize))
arostm	0:4af3ca173992	1710	{
arostm	0:4af3ca173992	1711	return AUDIO_ERROR;
arostm	0:4af3ca173992	1712	}
arostm	0:4af3ca173992	1713	}
arostm	0:4af3ca173992	1714	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	1715	return AUDIO_OK;
arostm	0:4af3ca173992	1716	}
arostm	0:4af3ca173992	1717
arostm	0:4af3ca173992	1718	/**
arostm	0:4af3ca173992	1719	* @brief Controls the audio in volume level.
arostm	0:4af3ca173992	1720	* @param Volume: Volume level to be set in percentage from 0% to 100% (0 for
arostm	0:4af3ca173992	1721	* Mute and 100 for Max volume level).
arostm	0:4af3ca173992	1722	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1723	*/
arostm	0:4af3ca173992	1724	uint8_t BSP_AUDIO_IN_SetVolume(uint8_t Volume)
arostm	0:4af3ca173992	1725	{
arostm	0:4af3ca173992	1726	/* Set the Global variable AudioInVolume */
arostm	0:4af3ca173992	1727	AudioInVolume = Volume;
arostm	0:4af3ca173992	1728
arostm	0:4af3ca173992	1729	/* Return AUDIO_OK when all operations are correctly done */
arostm	0:4af3ca173992	1730	return AUDIO_OK;
arostm	0:4af3ca173992	1731	}
arostm	0:4af3ca173992	1732
arostm	0:4af3ca173992	1733	/**
arostm	0:4af3ca173992	1734	* @brief User callback when record buffer is filled.
arostm	0:4af3ca173992	1735	*/
arostm	0:4af3ca173992	1736	__weak void BSP_AUDIO_IN_TransferComplete_CallBack(void)
arostm	0:4af3ca173992	1737	{
arostm	0:4af3ca173992	1738	/* This function should be implemented by the user application.
arostm	0:4af3ca173992	1739	It is called into this driver when the current buffer is filled
arostm	0:4af3ca173992	1740	to prepare the next buffer pointer and its size. */
arostm	0:4af3ca173992	1741	}
arostm	0:4af3ca173992	1742
arostm	0:4af3ca173992	1743	/**
arostm	0:4af3ca173992	1744	* @brief Manages the DMA Half Transfer complete event.
arostm	0:4af3ca173992	1745	*/
arostm	0:4af3ca173992	1746	__weak void BSP_AUDIO_IN_HalfTransfer_CallBack(void)
arostm	0:4af3ca173992	1747	{
arostm	0:4af3ca173992	1748	/* This function should be implemented by the user application.
arostm	0:4af3ca173992	1749	It is called into this driver when the current buffer is filled
arostm	0:4af3ca173992	1750	to prepare the next buffer pointer and its size. */
arostm	0:4af3ca173992	1751	}
arostm	0:4af3ca173992	1752
arostm	0:4af3ca173992	1753	/**
arostm	0:4af3ca173992	1754	* @brief User callback when record buffer is filled.
arostm	0:4af3ca173992	1755	* @param InputDevice: INPUT_DEVICE_DIGITAL_MIC1 .. INPUT_DEVICE_DIGITAL_MIC5.
arostm	0:4af3ca173992	1756	*/
arostm	0:4af3ca173992	1757	__weak void BSP_AUDIO_IN_TransferComplete_CallBackEx(uint32_t InputDevice)
arostm	0:4af3ca173992	1758	{
arostm	0:4af3ca173992	1759	/* This function should be implemented by the user application.
arostm	0:4af3ca173992	1760	It is called into this driver when the current buffer is filled
arostm	0:4af3ca173992	1761	to prepare the next buffer pointer and its size. */
arostm	0:4af3ca173992	1762	}
arostm	0:4af3ca173992	1763
arostm	0:4af3ca173992	1764	/**
arostm	0:4af3ca173992	1765	* @brief User callback when record buffer is filled.
arostm	0:4af3ca173992	1766	* @param InputDevice: INPUT_DEVICE_DIGITAL_MIC1 .. INPUT_DEVICE_DIGITAL_MIC5.
arostm	0:4af3ca173992	1767	*/
arostm	0:4af3ca173992	1768	__weak void BSP_AUDIO_IN_HalfTransfer_CallBackEx(uint32_t InputDevice)
arostm	0:4af3ca173992	1769	{
arostm	0:4af3ca173992	1770	/* This function should be implemented by the user application.
arostm	0:4af3ca173992	1771	It is called into this driver when the current buffer is filled
arostm	0:4af3ca173992	1772	to prepare the next buffer pointer and its size. */
arostm	0:4af3ca173992	1773	}
arostm	0:4af3ca173992	1774
arostm	0:4af3ca173992	1775	/**
arostm	0:4af3ca173992	1776	* @brief Audio IN Error callback function.
arostm	0:4af3ca173992	1777	*/
arostm	0:4af3ca173992	1778	__weak void BSP_AUDIO_IN_Error_Callback(void)
arostm	0:4af3ca173992	1779	{
arostm	0:4af3ca173992	1780	/* This function is called when an Interrupt due to transfer error on or peripheral
arostm	0:4af3ca173992	1781	error occurs. */
arostm	0:4af3ca173992	1782	}
arostm	0:4af3ca173992	1783
arostm	0:4af3ca173992	1784	/**
arostm	0:4af3ca173992	1785	* @}
arostm	0:4af3ca173992	1786	*/
arostm	0:4af3ca173992	1787
arostm	0:4af3ca173992	1788	/*******************************************************************************
arostm	0:4af3ca173992	1789	Static Functions
arostm	0:4af3ca173992	1790	*******************************************************************************/
arostm	0:4af3ca173992	1791
arostm	0:4af3ca173992	1792	/**
arostm	0:4af3ca173992	1793	* @brief De-initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).
arostm	0:4af3ca173992	1794	* @retval AUDIO_OK if correct communication, else wrong communication
arostm	0:4af3ca173992	1795	*/
arostm	0:4af3ca173992	1796	static uint8_t DFSDMx_DeInit(void)
arostm	0:4af3ca173992	1797	{
arostm	0:4af3ca173992	1798	for(uint32_t i = 0; i < DFSDM_MIC_NUMBER; i++)
arostm	0:4af3ca173992	1799	{
arostm	0:4af3ca173992	1800	if(hAudioInDfsdmFilter[i].Instance != NULL)
arostm	0:4af3ca173992	1801	{
arostm	0:4af3ca173992	1802	if(HAL_OK != HAL_DFSDM_FilterDeInit(&hAudioInDfsdmFilter[i]))
arostm	0:4af3ca173992	1803	{
arostm	0:4af3ca173992	1804	return AUDIO_ERROR;
arostm	0:4af3ca173992	1805	}
arostm	0:4af3ca173992	1806	hAudioInDfsdmFilter[i].Instance = NULL;
arostm	0:4af3ca173992	1807	}
arostm	0:4af3ca173992	1808	if(hAudioInDfsdmChannel[i].Instance != NULL)
arostm	0:4af3ca173992	1809	{
arostm	0:4af3ca173992	1810	if(HAL_OK != HAL_DFSDM_ChannelDeInit(&hAudioInDfsdmChannel[i]))
arostm	0:4af3ca173992	1811	{
arostm	0:4af3ca173992	1812	return AUDIO_ERROR;
arostm	0:4af3ca173992	1813	}
arostm	0:4af3ca173992	1814	hAudioInDfsdmChannel[i].Instance = NULL;
arostm	0:4af3ca173992	1815	}
arostm	0:4af3ca173992	1816	}
arostm	0:4af3ca173992	1817	return AUDIO_OK;
arostm	0:4af3ca173992	1818	}
arostm	0:4af3ca173992	1819
arostm	0:4af3ca173992	1820	/**
arostm	0:4af3ca173992	1821	* @brief Initializes the DFSDM channel MSP.
arostm	0:4af3ca173992	1822	*/
arostm	0:4af3ca173992	1823	static void DFSDMx_ChannelMspInit(void)
arostm	0:4af3ca173992	1824	{
arostm	0:4af3ca173992	1825	GPIO_InitTypeDef GPIO_InitStruct;
arostm	0:4af3ca173992	1826
arostm	0:4af3ca173992	1827	GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
arostm	0:4af3ca173992	1828	GPIO_InitStruct.Pull = GPIO_NOPULL;
arostm	0:4af3ca173992	1829	GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
arostm	0:4af3ca173992	1830
arostm	0:4af3ca173992	1831	if((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
arostm	0:4af3ca173992	1832	{
arostm	0:4af3ca173992	1833	/* Enable DFSDM clock */
arostm	0:4af3ca173992	1834	AUDIO_DFSDMx_MIC1_CLK_ENABLE();
arostm	0:4af3ca173992	1835	/* Enable GPIO clock */
arostm	0:4af3ca173992	1836	AUDIO_DFSDMx_MIC1_CKOUT_DMIC_GPIO_CLK_ENABLE();
arostm	0:4af3ca173992	1837
arostm	0:4af3ca173992	1838	/* DFSDM MIC1 pins configuration: DFSDM_CKOUT, DMIC_DATIN pins -------------*/
arostm	0:4af3ca173992	1839	GPIO_InitStruct.Pin = AUDIO_DFSDMx_MIC1_CKOUT_PIN;
arostm	0:4af3ca173992	1840	GPIO_InitStruct.Alternate = AUDIO_DFSDMx_MIC1_CKOUT_DMIC_AF;
arostm	0:4af3ca173992	1841	HAL_GPIO_Init(AUDIO_DFSDMx_MIC1_CKOUT_DMIC_GPIO_PORT, &GPIO_InitStruct);
arostm	0:4af3ca173992	1842
arostm	0:4af3ca173992	1843	AUDIO_DFSDMx_MIC1_DMIC_GPIO_CLK_ENABLE();
arostm	0:4af3ca173992	1844	GPIO_InitStruct.Pin = AUDIO_DFSDMx_MIC1_DMIC_PIN;
arostm	0:4af3ca173992	1845	GPIO_InitStruct.Alternate = AUDIO_DFSDMx_MIC1_DMIC_AF;
arostm	0:4af3ca173992	1846	HAL_GPIO_Init(AUDIO_DFSDMx_MIC1_DMIC_GPIO_PORT, &GPIO_InitStruct);
arostm	0:4af3ca173992	1847	}
arostm	0:4af3ca173992	1848
arostm	0:4af3ca173992	1849	if(hAudioIn.InputDevice > INPUT_DEVICE_DIGITAL_MIC1)
arostm	0:4af3ca173992	1850	{
arostm	0:4af3ca173992	1851	/* Enable DFSDM clock */
arostm	0:4af3ca173992	1852	AUDIO_DFSDMx_MIC2_5_CLK_ENABLE();
arostm	0:4af3ca173992	1853	/* Enable GPIO clock */
arostm	0:4af3ca173992	1854	AUDIO_DFSDMx_MIC2_5_CKOUT_DMIC_GPIO_CLK_ENABLE();
arostm	0:4af3ca173992	1855
arostm	0:4af3ca173992	1856	/* DFSDM MIC2 pins configuration: DFSDM_CKOUT, DMIC_DATIN pins -------------*/
arostm	0:4af3ca173992	1857	GPIO_InitStruct.Pin = AUDIO_DFSDMx_MIC2_5_CKOUT_PIN;
arostm	0:4af3ca173992	1858	GPIO_InitStruct.Alternate = AUDIO_DFSDMx_MIC2_5_CKOUT_DMIC_AF;
arostm	0:4af3ca173992	1859	HAL_GPIO_Init(AUDIO_DFSDMx_MIC2_5_CKOUT_DMIC_GPIO_PORT, &GPIO_InitStruct);
arostm	0:4af3ca173992	1860
arostm	0:4af3ca173992	1861	if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2) \|\|\
arostm	0:4af3ca173992	1862	((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC3) == INPUT_DEVICE_DIGITAL_MIC3))
arostm	0:4af3ca173992	1863	{
arostm	0:4af3ca173992	1864	AUDIO_DFSDMx_MIC23_DMIC_GPIO_CLK_ENABLE();
arostm	0:4af3ca173992	1865	GPIO_InitStruct.Pin = AUDIO_DFSDMx_MIC23_DMIC_PIN;
arostm	0:4af3ca173992	1866	GPIO_InitStruct.Alternate = AUDIO_DFSDMx_MIC23_DMIC_AF;
arostm	0:4af3ca173992	1867	HAL_GPIO_Init(AUDIO_DFSDMx_MIC23_DMIC_GPIO_PORT, &GPIO_InitStruct);
arostm	0:4af3ca173992	1868	}
arostm	0:4af3ca173992	1869
arostm	0:4af3ca173992	1870	if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC4) == INPUT_DEVICE_DIGITAL_MIC4) \|\|\
arostm	0:4af3ca173992	1871	((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC5) == INPUT_DEVICE_DIGITAL_MIC5))
arostm	0:4af3ca173992	1872	{
arostm	0:4af3ca173992	1873
arostm	0:4af3ca173992	1874	AUDIO_DFSDMx_MIC45_DMIC_GPIO_CLK_ENABLE();
arostm	0:4af3ca173992	1875	GPIO_InitStruct.Pin = AUDIO_DFSDMx_MIC45_DMIC_PIN;
arostm	0:4af3ca173992	1876	GPIO_InitStruct.Alternate = AUDIO_DFSDMx_MIC45_DMIC_AF;
arostm	0:4af3ca173992	1877	HAL_GPIO_Init(AUDIO_DFSDMx_MIC45_DMIC_GPIO_PORT, &GPIO_InitStruct);
arostm	0:4af3ca173992	1878	}
arostm	0:4af3ca173992	1879	}
arostm	0:4af3ca173992	1880	}
arostm	0:4af3ca173992	1881
arostm	0:4af3ca173992	1882	/**
arostm	0:4af3ca173992	1883	* @brief DeInitializes the DFSDM channel MSP.
arostm	0:4af3ca173992	1884	*/
arostm	0:4af3ca173992	1885	static void DFSDMx_ChannelMspDeInit(void)
arostm	0:4af3ca173992	1886	{
arostm	0:4af3ca173992	1887	GPIO_InitTypeDef GPIO_InitStruct;
arostm	0:4af3ca173992	1888
arostm	0:4af3ca173992	1889	if((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
arostm	0:4af3ca173992	1890	{
arostm	0:4af3ca173992	1891	/* DFSDM MIC1 pins configuration: DFSDM_CKOUT, DMIC_DATIN pins -------------*/
arostm	0:4af3ca173992	1892	GPIO_InitStruct.Pin = AUDIO_DFSDMx_MIC1_CKOUT_PIN;
arostm	0:4af3ca173992	1893	HAL_GPIO_DeInit(AUDIO_DFSDMx_MIC1_CKOUT_DMIC_GPIO_PORT, GPIO_InitStruct.Pin);
arostm	0:4af3ca173992	1894
arostm	0:4af3ca173992	1895	GPIO_InitStruct.Pin = AUDIO_DFSDMx_MIC1_DMIC_PIN;
arostm	0:4af3ca173992	1896	HAL_GPIO_DeInit(AUDIO_DFSDMx_MIC1_DMIC_GPIO_PORT, GPIO_InitStruct.Pin);
arostm	0:4af3ca173992	1897	}
arostm	0:4af3ca173992	1898
arostm	0:4af3ca173992	1899	if(hAudioIn.InputDevice > INPUT_DEVICE_DIGITAL_MIC1)
arostm	0:4af3ca173992	1900	{
arostm	0:4af3ca173992	1901	/* DFSDM MIC2, MIC3, MIC4 and MIC5 pins configuration: DFSDM_CKOUT pin -----*/
arostm	0:4af3ca173992	1902	GPIO_InitStruct.Pin = AUDIO_DFSDMx_MIC2_5_CKOUT_PIN;
arostm	0:4af3ca173992	1903	HAL_GPIO_DeInit(AUDIO_DFSDMx_MIC2_5_CKOUT_DMIC_GPIO_PORT, GPIO_InitStruct.Pin);
arostm	0:4af3ca173992	1904
arostm	0:4af3ca173992	1905	if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2) \|\|\
arostm	0:4af3ca173992	1906	((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC3) == INPUT_DEVICE_DIGITAL_MIC3))
arostm	0:4af3ca173992	1907	{
arostm	0:4af3ca173992	1908	/* DFSDM MIC2, MIC3 pins configuration: DMIC_DATIN pin -----*/
arostm	0:4af3ca173992	1909	GPIO_InitStruct.Pin = AUDIO_DFSDMx_MIC23_DMIC_PIN;
arostm	0:4af3ca173992	1910	HAL_GPIO_DeInit(AUDIO_DFSDMx_MIC23_DMIC_GPIO_PORT, GPIO_InitStruct.Pin);
arostm	0:4af3ca173992	1911	}
arostm	0:4af3ca173992	1912
arostm	0:4af3ca173992	1913	if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC4) == INPUT_DEVICE_DIGITAL_MIC4) \|\|\
arostm	0:4af3ca173992	1914	((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC5) == INPUT_DEVICE_DIGITAL_MIC5))
arostm	0:4af3ca173992	1915	{
arostm	0:4af3ca173992	1916	/* DFSDM MIC4, MIC5 pins configuration: DMIC_DATIN pin -----*/
arostm	0:4af3ca173992	1917	GPIO_InitStruct.Pin = AUDIO_DFSDMx_MIC45_DMIC_PIN;
arostm	0:4af3ca173992	1918	HAL_GPIO_DeInit(AUDIO_DFSDMx_MIC45_DMIC_GPIO_PORT, GPIO_InitStruct.Pin);
arostm	0:4af3ca173992	1919	}
arostm	0:4af3ca173992	1920	}
arostm	0:4af3ca173992	1921	}
arostm	0:4af3ca173992	1922
arostm	0:4af3ca173992	1923	/**
arostm	0:4af3ca173992	1924	* @brief Initializes the DFSDM filter MSP.
arostm	0:4af3ca173992	1925	*/
arostm	0:4af3ca173992	1926	static void DFSDMx_FilterMspInit(void)
arostm	0:4af3ca173992	1927	{
arostm	0:4af3ca173992	1928	uint32_t i = 0, mic_num = 0, mic_init[DFSDM_MIC_NUMBER] = {0};
arostm	0:4af3ca173992	1929	IRQn_Type AUDIO_DFSDM_DMAx_MIC_IRQHandler[DFSDM_MIC_NUMBER] = {AUDIO_DFSDMx_DMAx_MIC1_IRQ, AUDIO_DFSDMx_DMAx_MIC2_IRQ, AUDIO_DFSDMx_DMAx_MIC3_IRQ, AUDIO_DFSDMx_DMAx_MIC4_IRQ, AUDIO_DFSDMx_DMAx_MIC5_IRQ};
arostm	0:4af3ca173992	1930	DMA_Stream_TypeDef* AUDIO_DFSDMx_DMAx_MIC_STREAM[DFSDM_MIC_NUMBER] = {AUDIO_DFSDMx_DMAx_MIC1_STREAM, AUDIO_DFSDMx_DMAx_MIC2_STREAM, AUDIO_DFSDMx_DMAx_MIC3_STREAM, AUDIO_DFSDMx_DMAx_MIC4_STREAM, AUDIO_DFSDMx_DMAx_MIC5_STREAM};
arostm	0:4af3ca173992	1931	uint32_t AUDIO_DFSDMx_DMAx_MIC_CHANNEL[DFSDM_MIC_NUMBER] = {AUDIO_DFSDMx_DMAx_MIC1_CHANNEL, AUDIO_DFSDMx_DMAx_MIC2_CHANNEL, AUDIO_DFSDMx_DMAx_MIC3_CHANNEL, AUDIO_DFSDMx_DMAx_MIC4_CHANNEL, AUDIO_DFSDMx_DMAx_MIC5_CHANNEL};
arostm	0:4af3ca173992	1932
arostm	0:4af3ca173992	1933	/* Enable the DMA clock */
arostm	0:4af3ca173992	1934	AUDIO_DFSDMx_DMAx_CLK_ENABLE();
arostm	0:4af3ca173992	1935
arostm	0:4af3ca173992	1936	for(i = 0; i < hAudioIn.ChannelNbr; i++)
arostm	0:4af3ca173992	1937	{
arostm	0:4af3ca173992	1938	if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)] != 1))
arostm	0:4af3ca173992	1939	{
arostm	0:4af3ca173992	1940	mic_num = POS_VAL(INPUT_DEVICE_DIGITAL_MIC1);
arostm	0:4af3ca173992	1941	mic_init[mic_num] = 1;
arostm	0:4af3ca173992	1942	}
arostm	0:4af3ca173992	1943	else if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)] != 1))
arostm	0:4af3ca173992	1944	{
arostm	0:4af3ca173992	1945	mic_num = POS_VAL(INPUT_DEVICE_DIGITAL_MIC2);
arostm	0:4af3ca173992	1946	mic_init[mic_num] = 1;
arostm	0:4af3ca173992	1947	}
arostm	0:4af3ca173992	1948	else if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC3) == INPUT_DEVICE_DIGITAL_MIC3) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC3)] != 1))
arostm	0:4af3ca173992	1949	{
arostm	0:4af3ca173992	1950	mic_num = POS_VAL(INPUT_DEVICE_DIGITAL_MIC3);
arostm	0:4af3ca173992	1951	mic_init[mic_num] = 1;
arostm	0:4af3ca173992	1952	}
arostm	0:4af3ca173992	1953	else if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC4) == INPUT_DEVICE_DIGITAL_MIC4) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC4)] != 1))
arostm	0:4af3ca173992	1954	{
arostm	0:4af3ca173992	1955	mic_num = POS_VAL(INPUT_DEVICE_DIGITAL_MIC4);
arostm	0:4af3ca173992	1956	mic_init[mic_num] = 1;
arostm	0:4af3ca173992	1957	}
arostm	0:4af3ca173992	1958	else if(((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC5) == INPUT_DEVICE_DIGITAL_MIC5) && (mic_init[POS_VAL(INPUT_DEVICE_DIGITAL_MIC5)] != 1))
arostm	0:4af3ca173992	1959	{
arostm	0:4af3ca173992	1960	mic_num = POS_VAL(INPUT_DEVICE_DIGITAL_MIC5);
arostm	0:4af3ca173992	1961	mic_init[mic_num] = 1;
arostm	0:4af3ca173992	1962	}
arostm	0:4af3ca173992	1963
arostm	0:4af3ca173992	1964	/* Configure the hDmaDfsdm[i] handle parameters */
arostm	0:4af3ca173992	1965	hDmaDfsdm[mic_num].Init.Channel = AUDIO_DFSDMx_DMAx_MIC_CHANNEL[mic_num];
arostm	0:4af3ca173992	1966	hDmaDfsdm[mic_num].Instance = AUDIO_DFSDMx_DMAx_MIC_STREAM[mic_num];
arostm	0:4af3ca173992	1967	hDmaDfsdm[mic_num].Init.Direction = DMA_PERIPH_TO_MEMORY;
arostm	0:4af3ca173992	1968	hDmaDfsdm[mic_num].Init.PeriphInc = DMA_PINC_DISABLE;
arostm	0:4af3ca173992	1969	hDmaDfsdm[mic_num].Init.MemInc = DMA_MINC_ENABLE;
arostm	0:4af3ca173992	1970	hDmaDfsdm[mic_num].Init.PeriphDataAlignment = AUDIO_DFSDMx_DMAx_PERIPH_DATA_SIZE;
arostm	0:4af3ca173992	1971	hDmaDfsdm[mic_num].Init.MemDataAlignment = AUDIO_DFSDMx_DMAx_MEM_DATA_SIZE;
arostm	0:4af3ca173992	1972	hDmaDfsdm[mic_num].Init.Mode = DMA_CIRCULAR;
arostm	0:4af3ca173992	1973	hDmaDfsdm[mic_num].Init.Priority = DMA_PRIORITY_HIGH;
arostm	0:4af3ca173992	1974	hDmaDfsdm[mic_num].Init.FIFOMode = DMA_FIFOMODE_DISABLE;
arostm	0:4af3ca173992	1975	hDmaDfsdm[mic_num].Init.MemBurst = DMA_MBURST_SINGLE;
arostm	0:4af3ca173992	1976	hDmaDfsdm[mic_num].Init.PeriphBurst = DMA_PBURST_SINGLE;
arostm	0:4af3ca173992	1977	hDmaDfsdm[mic_num].State = HAL_DMA_STATE_RESET;
arostm	0:4af3ca173992	1978
arostm	0:4af3ca173992	1979	/* Associate the DMA handle */
arostm	0:4af3ca173992	1980	__HAL_LINKDMA(&hAudioInDfsdmFilter[mic_num], hdmaReg, hDmaDfsdm[mic_num]);
arostm	0:4af3ca173992	1981
arostm	0:4af3ca173992	1982	/* Reset DMA handle state */
arostm	0:4af3ca173992	1983	__HAL_DMA_RESET_HANDLE_STATE(&hDmaDfsdm[mic_num]);
arostm	0:4af3ca173992	1984
arostm	0:4af3ca173992	1985	/* Configure the DMA Channel */
arostm	0:4af3ca173992	1986	HAL_DMA_Init(&hDmaDfsdm[mic_num]);
arostm	0:4af3ca173992	1987
arostm	0:4af3ca173992	1988	/* DMA IRQ Channel configuration */
arostm	0:4af3ca173992	1989	HAL_NVIC_SetPriority(AUDIO_DFSDM_DMAx_MIC_IRQHandler[mic_num], AUDIO_IN_IRQ_PREPRIO, 0);
arostm	0:4af3ca173992	1990	HAL_NVIC_EnableIRQ(AUDIO_DFSDM_DMAx_MIC_IRQHandler[mic_num]);
arostm	0:4af3ca173992	1991	}
arostm	0:4af3ca173992	1992	}
arostm	0:4af3ca173992	1993
arostm	0:4af3ca173992	1994	/**
arostm	0:4af3ca173992	1995	* @brief DeInitializes the DFSDM filter MSP.
arostm	0:4af3ca173992	1996	*/
arostm	0:4af3ca173992	1997	static void DFSDMx_FilterMspDeInit(void)
arostm	0:4af3ca173992	1998	{
arostm	0:4af3ca173992	1999	/* Configure the DMA Channel */
arostm	0:4af3ca173992	2000	for(uint32_t i = 0; i < DFSDM_MIC_NUMBER; i++)
arostm	0:4af3ca173992	2001	{
arostm	0:4af3ca173992	2002	if(hDmaDfsdm[i].Instance != NULL)
arostm	0:4af3ca173992	2003	{
arostm	0:4af3ca173992	2004	HAL_DMA_DeInit(&hDmaDfsdm[i]);
arostm	0:4af3ca173992	2005	}
arostm	0:4af3ca173992	2006	}
arostm	0:4af3ca173992	2007	}
arostm	0:4af3ca173992	2008
arostm	0:4af3ca173992	2009	/**
arostm	0:4af3ca173992	2010	* @brief Initializes the Audio Codec audio interface (I2S)
arostm	0:4af3ca173992	2011	* @note This function assumes that the I2S input clock
arostm	0:4af3ca173992	2012	* is already configured and ready to be used.
arostm	0:4af3ca173992	2013	* @param AudioFreq: Audio frequency to be configured for the I2S peripheral.
arostm	0:4af3ca173992	2014	*/
arostm	0:4af3ca173992	2015	static void I2Sx_In_Init(uint32_t AudioFreq)
arostm	0:4af3ca173992	2016	{
arostm	0:4af3ca173992	2017	/* Initialize the hAudioInI2s and haudio_in_i2sext Instance parameters */
arostm	0:4af3ca173992	2018	haudio_i2s.Instance = AUDIO_IN_I2Sx;
arostm	0:4af3ca173992	2019	haudio_in_i2sext.Instance = I2S3ext;
arostm	0:4af3ca173992	2020
arostm	0:4af3ca173992	2021	/* Disable I2S block */
arostm	0:4af3ca173992	2022	__HAL_I2S_DISABLE(&haudio_i2s);
arostm	0:4af3ca173992	2023	__HAL_I2S_DISABLE(&haudio_in_i2sext);
arostm	0:4af3ca173992	2024
arostm	0:4af3ca173992	2025	/* I2S peripheral configuration */
arostm	0:4af3ca173992	2026	haudio_i2s.Init.AudioFreq = AudioFreq;
arostm	0:4af3ca173992	2027	haudio_i2s.Init.ClockSource = I2S_CLOCK_PLL;
arostm	0:4af3ca173992	2028	haudio_i2s.Init.CPOL = I2S_CPOL_LOW;
arostm	0:4af3ca173992	2029	haudio_i2s.Init.DataFormat = I2S_DATAFORMAT_16B;
arostm	0:4af3ca173992	2030	haudio_i2s.Init.MCLKOutput = I2S_MCLKOUTPUT_ENABLE;
arostm	0:4af3ca173992	2031	haudio_i2s.Init.Mode = I2S_MODE_MASTER_TX;
arostm	0:4af3ca173992	2032	haudio_i2s.Init.Standard = I2S_STANDARD_PHILIPS;
arostm	0:4af3ca173992	2033	haudio_i2s.Init.FullDuplexMode = I2S_FULLDUPLEXMODE_ENABLE;
arostm	0:4af3ca173992	2034	/* Init the I2S */
arostm	0:4af3ca173992	2035	HAL_I2S_Init(&haudio_i2s);
arostm	0:4af3ca173992	2036
arostm	0:4af3ca173992	2037	/* I2Sext peripheral configuration */
arostm	0:4af3ca173992	2038	haudio_in_i2sext.Init.AudioFreq = AudioFreq;
arostm	0:4af3ca173992	2039	haudio_in_i2sext.Init.ClockSource = I2S_CLOCK_PLL;
arostm	0:4af3ca173992	2040	haudio_in_i2sext.Init.CPOL = I2S_CPOL_HIGH;
arostm	0:4af3ca173992	2041	haudio_in_i2sext.Init.DataFormat = I2S_DATAFORMAT_16B;
arostm	0:4af3ca173992	2042	haudio_in_i2sext.Init.MCLKOutput = I2S_MCLKOUTPUT_ENABLE;
arostm	0:4af3ca173992	2043	haudio_in_i2sext.Init.Mode = I2S_MODE_SLAVE_RX;
arostm	0:4af3ca173992	2044	haudio_in_i2sext.Init.Standard = I2S_STANDARD_PHILIPS;
arostm	0:4af3ca173992	2045
arostm	0:4af3ca173992	2046	/* Init the I2Sext */
arostm	0:4af3ca173992	2047	HAL_I2S_Init(&haudio_in_i2sext);
arostm	0:4af3ca173992	2048
arostm	0:4af3ca173992	2049	/* Enable I2S block */
arostm	0:4af3ca173992	2050	__HAL_I2S_ENABLE(&haudio_i2s);
arostm	0:4af3ca173992	2051	__HAL_I2S_ENABLE(&haudio_in_i2sext);
arostm	0:4af3ca173992	2052	}
arostm	0:4af3ca173992	2053
arostm	0:4af3ca173992	2054	/**
arostm	0:4af3ca173992	2055	* @brief Deinitializes the Audio Codec audio interface (I2S).
arostm	0:4af3ca173992	2056	*/
arostm	0:4af3ca173992	2057	static void I2Sx_In_DeInit(void)
arostm	0:4af3ca173992	2058	{
arostm	0:4af3ca173992	2059	/* Initialize the hAudioInI2s Instance parameter */
arostm	0:4af3ca173992	2060	haudio_i2s.Instance = AUDIO_IN_I2Sx;
arostm	0:4af3ca173992	2061
arostm	0:4af3ca173992	2062	/* Disable I2S block */
arostm	0:4af3ca173992	2063	__HAL_I2S_DISABLE(&haudio_i2s);
arostm	0:4af3ca173992	2064
arostm	0:4af3ca173992	2065	/* DeInit the I2S */
arostm	0:4af3ca173992	2066	HAL_I2S_DeInit(&haudio_i2s);
arostm	0:4af3ca173992	2067
arostm	0:4af3ca173992	2068	/* Initialize the hAudioInI2s Instance parameter */
arostm	0:4af3ca173992	2069	haudio_in_i2sext.Instance = I2S3ext;
arostm	0:4af3ca173992	2070
arostm	0:4af3ca173992	2071	/* Disable I2S block */
arostm	0:4af3ca173992	2072	__HAL_I2S_DISABLE(&haudio_in_i2sext);
arostm	0:4af3ca173992	2073
arostm	0:4af3ca173992	2074	/* DeInit the I2S */
arostm	0:4af3ca173992	2075	HAL_I2S_DeInit(&haudio_in_i2sext);
arostm	0:4af3ca173992	2076	}
arostm	0:4af3ca173992	2077
arostm	0:4af3ca173992	2078	/**
arostm	2:0f07a9ac06f7	2079	* @brief This function handles DFSDM MIC1 DMA interrupt request.
arostm	2:0f07a9ac06f7	2080	* @param None
arostm	2:0f07a9ac06f7	2081	* @retval None
arostm	2:0f07a9ac06f7	2082	*/
arostm	2:0f07a9ac06f7	2083	void AUDIO_DFSDM_DMAx_MIC1_IRQHandler(void)
arostm	2:0f07a9ac06f7	2084	{
arostm	2:0f07a9ac06f7	2085	HAL_DMA_IRQHandler(hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC1)].hdmaReg);
arostm	2:0f07a9ac06f7	2086
arostm	2:0f07a9ac06f7	2087	}
arostm	2:0f07a9ac06f7	2088
arostm	2:0f07a9ac06f7	2089	/**
arostm	2:0f07a9ac06f7	2090	* @brief This function handles DFSDM MIC2 DMA interrupt request.
arostm	2:0f07a9ac06f7	2091	* @param None
arostm	2:0f07a9ac06f7	2092	* @retval None
arostm	2:0f07a9ac06f7	2093	*/
arostm	2:0f07a9ac06f7	2094	void AUDIO_DFSDM_DMAx_MIC2_IRQHandler(void)
arostm	2:0f07a9ac06f7	2095	{
arostm	2:0f07a9ac06f7	2096	HAL_DMA_IRQHandler(hAudioInDfsdmFilter[POS_VAL(INPUT_DEVICE_DIGITAL_MIC2)].hdmaReg);
arostm	2:0f07a9ac06f7	2097	}
arostm	2:0f07a9ac06f7	2098
arostm	2:0f07a9ac06f7	2099	/**
arostm	2:0f07a9ac06f7	2100	* @brief This function handles I2S DMA interrupt request.
arostm	2:0f07a9ac06f7	2101	* @param None
arostm	2:0f07a9ac06f7	2102	* @retval None
arostm	2:0f07a9ac06f7	2103	*/
arostm	2:0f07a9ac06f7	2104	void AUDIO_OUT_I2Sx_DMAx_IRQHandler(void)
arostm	2:0f07a9ac06f7	2105	{
arostm	2:0f07a9ac06f7	2106	HAL_DMA_IRQHandler(haudio_i2s.hdmatx);
arostm	2:0f07a9ac06f7	2107	}
arostm	2:0f07a9ac06f7	2108
arostm	2:0f07a9ac06f7	2109	/**
arostm	0:4af3ca173992	2110	* @}
arostm	0:4af3ca173992	2111	*/
arostm	0:4af3ca173992	2112
arostm	0:4af3ca173992	2113	/**
arostm	0:4af3ca173992	2114	* @}
arostm	0:4af3ca173992	2115	*/
arostm	0:4af3ca173992	2116
arostm	0:4af3ca173992	2117	/**
arostm	0:4af3ca173992	2118	* @}
arostm	0:4af3ca173992	2119	*/
arostm	0:4af3ca173992	2120
arostm	0:4af3ca173992	2121	/**
arostm	0:4af3ca173992	2122	* @}
arostm	0:4af3ca173992	2123	*/
arostm	0:4af3ca173992	2124
arostm	0:4af3ca173992	2125	/********************** (C) COPYRIGHT STMicroelectronics *END OF FILE**/

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Type:	Library
Created:	17 May 2017
Imports:	93
Forks:	0
Commits:	4
Dependents:	18
Dependencies:	0
Followers:	405

Drivers/BSP/STM32F413H-Discovery/stm32f413h_discovery_audio.c@2:0f07a9ac06f7, 2017-05-23 (annotated)

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