BSP_DISCO_L496AG - BSP driver for DISCO_L496AG

ST » Code » BSP_DISCO_L496AG

BSP driver for DISCO_L496AG

Dependents: DISCO_L496AG-LCD-prova_1 DISCO_L496AG-LCD-prova_2 DISCO_L496AG-LCD-demo DISCO_L496AG-SRAM-demo

Drivers/BSP/STM32L496G-Discovery/stm32l496g_discovery_audio.c@2:106c7b82e064, 2019-11-20 (annotated)

Committer:: Jerome Coutant
Date:: Wed Nov 20 16:48:24 2019 +0100
Revision:: 2:106c7b82e064
Parent:: 0:d83f1c8ca282

Update BSP files with CubeL4 V1.14.0

Who changed what in which revision?

User	Revision	Line number	New contents of line
bcostm	0:d83f1c8ca282	1	/**
bcostm	0:d83f1c8ca282	2	******************************************************************************
bcostm	0:d83f1c8ca282	3	* @file stm32l496g_discovery_audio.c
bcostm	0:d83f1c8ca282	4	* @author MCD Application Team
bcostm	0:d83f1c8ca282	5	* @brief This file provides a set of functions needed to manage the
bcostm	0:d83f1c8ca282	6	* Audio driver for the STM32L496G-Discovery board.
bcostm	0:d83f1c8ca282	7	******************************************************************************
bcostm	0:d83f1c8ca282	8	* @attention
bcostm	0:d83f1c8ca282	9	*
Jerome Coutant	2:106c7b82e064	10	* <h2><center>© Copyright (c) 2017 STMicroelectronics.
Jerome Coutant	2:106c7b82e064	11	* All rights reserved.</center></h2>
bcostm	0:d83f1c8ca282	12	*
Jerome Coutant	2:106c7b82e064	13	* This software component is licensed by ST under BSD 3-Clause license,
Jerome Coutant	2:106c7b82e064	14	* the "License"; You may not use this file except in compliance with the
Jerome Coutant	2:106c7b82e064	15	* License. You may obtain a copy of the License at:
Jerome Coutant	2:106c7b82e064	16	* opensource.org/licenses/BSD-3-Clause
bcostm	0:d83f1c8ca282	17	*
bcostm	0:d83f1c8ca282	18	******************************************************************************
bcostm	0:d83f1c8ca282	19	*/
bcostm	0:d83f1c8ca282	20
bcostm	0:d83f1c8ca282	21	/*==============================================================================
bcostm	0:d83f1c8ca282	22	User NOTES
bcostm	0:d83f1c8ca282	23
bcostm	0:d83f1c8ca282	24	1. How To use this driver:
bcostm	0:d83f1c8ca282	25	--------------------------
bcostm	0:d83f1c8ca282	26	+ This driver supports STM32L4xx devices on STM32L496G-Discovery (MB1261) Discovery boards.
bcostm	0:d83f1c8ca282	27	a) to play an audio file through headset. All functions names start by BSP_AUDIO_OUT_xxx.
bcostm	0:d83f1c8ca282	28	b) to record an audio file through digital microphones (MP34DT01TR ST mems)
bcostm	0:d83f1c8ca282	29	or analog microphone (headset microphone). All functions names start by BSP_AUDIO_IN_xxx.
bcostm	0:d83f1c8ca282	30
bcostm	0:d83f1c8ca282	31	a) PLAY A FILE:
bcostm	0:d83f1c8ca282	32	==============
bcostm	0:d83f1c8ca282	33	+ Call the function BSP_AUDIO_OUT_Init(
bcostm	0:d83f1c8ca282	34	OutputDevice: physical output mode (only OUTPUT_DEVICE_HEADPHONE).
bcostm	0:d83f1c8ca282	35	Volume : Initial volume to be set (0 is min (mute), 100 is max (100%)
bcostm	0:d83f1c8ca282	36	AudioFreq : Audio frequency in Hz (8000, 16000, 22500, 32000...)
bcostm	0:d83f1c8ca282	37	this parameter is relative to the audio file/stream type.
bcostm	0:d83f1c8ca282	38	)
bcostm	0:d83f1c8ca282	39	This function configures all the hardware required for the audio application (codec, I2C, SAI,
bcostm	0:d83f1c8ca282	40	GPIOs, DMA and interrupt if needed). This function returns AUDIO_OK if configuration is OK.
bcostm	0:d83f1c8ca282	41	If the returned value is different from AUDIO_OK or the function is stuck then the communication with
bcostm	0:d83f1c8ca282	42	the audio codec has failed.
bcostm	0:d83f1c8ca282	43	- OUTPUT_DEVICE_HEADPHONE: only Headphone output is available on this board.
bcostm	0:d83f1c8ca282	44
bcostm	0:d83f1c8ca282	45	+ Call the function BSP_AUDIO_OUT_RegisterCallbacks to register user callbacks
bcostm	0:d83f1c8ca282	46	required to manage audio data streaming towards the audio codec (ErrorCallback(),
bcostm	0:d83f1c8ca282	47	HalfTransfer_CallBack() and TransferComplete_CallBack()).
bcostm	0:d83f1c8ca282	48
bcostm	0:d83f1c8ca282	49	+ Call the function BSP_AUDIO_OUT_Play() to start audio playback (for the first time).
bcostm	0:d83f1c8ca282	50	+ Call the function BSP_AUDIO_OUT_Pause() to pause audio playback.
bcostm	0:d83f1c8ca282	51	+ Call the function BSP_AUDIO_OUT_Resume() to resume audio playback.
bcostm	0:d83f1c8ca282	52	Note. After calling BSP_AUDIO_OUT_Pause() function for pause, only BSP_AUDIO_OUT_Resume() should be called
bcostm	0:d83f1c8ca282	53	for resume (it is not allowed to call BSP_AUDIO_OUT_Play() in this case).
bcostm	0:d83f1c8ca282	54	Note. This function should be called only when the audio file is played or paused (not stopped).
bcostm	0:d83f1c8ca282	55	+ Call the function BSP_AUDIO_OUT_Stop() to stop audio playback.
bcostm	0:d83f1c8ca282	56	+ To modify the volume level, the sampling frequency, the device output mode,
bcostm	0:d83f1c8ca282	57	the mute status or the audio configuration or the stop, use the functions: BSP_AUDIO_OUT_SetVolume(),
bcostm	0:d83f1c8ca282	58	AUDIO_OUT_SetFrequency(), BSP_AUDIO_OUT_SetOutputMode(), BSP_AUDIO_OUT_SetMute()and
bcostm	0:d83f1c8ca282	59	BSP_AUDIO_OUT_ChangeAudioConfig().
bcostm	0:d83f1c8ca282	60
bcostm	0:d83f1c8ca282	61	Driver architecture:
bcostm	0:d83f1c8ca282	62	--------------------
bcostm	0:d83f1c8ca282	63	+ This driver provides the audio layer high level API: it consists in functions
bcostm	0:d83f1c8ca282	64	exported in the stm32l496g_discovery_audio.h file (e.g. BSP_AUDIO_OUT_Init(),
bcostm	0:d83f1c8ca282	65	BSP_AUDIO_OUT_Play(), ...).
bcostm	0:d83f1c8ca282	66	+ This driver also includes the Media Access Layer (MAL): it consists in
bcostm	0:d83f1c8ca282	67	functions allowing to access setup the audio devices. These functions
bcostm	0:d83f1c8ca282	68	are included as local functions into the stm32l496g_discovery_audio.c file
bcostm	0:d83f1c8ca282	69	(e.g. AUDIO_SAIx_Init()).
bcostm	0:d83f1c8ca282	70
bcostm	0:d83f1c8ca282	71	Known Limitations:
bcostm	0:d83f1c8ca282	72	------------------
bcostm	0:d83f1c8ca282	73	1- Communication with the audio codec (through I2C) may be corrupted if it is interrupted by some
bcostm	0:d83f1c8ca282	74	user interrupt routines (in this case, interrupts could be disabled just before the start of
bcostm	0:d83f1c8ca282	75	communication then re-enabled when it is over). Note that this communication is only done at
bcostm	0:d83f1c8ca282	76	the configuration phase (BSP_AUDIO_OUT_Init() or BSP_AUDIO_OUT_Stop()) and when Volume control modification is
bcostm	0:d83f1c8ca282	77	performed (BSP_AUDIO_OUT_SetVolume() or BSP_AUDIO_OUT_SetMute()or BSP_AUDIO_OUT_SetOutputMode()).
bcostm	0:d83f1c8ca282	78	When the audio data is played, no communication is required with the audio codec.
bcostm	0:d83f1c8ca282	79	2- Parsing of audio file is not implemented (in order to determine audio file properties: Mono/Stereo, Data size,
bcostm	0:d83f1c8ca282	80	File size, Audio Frequency, Audio Data header size ...). The configuration is fixed for the given audio file.
bcostm	0:d83f1c8ca282	81	3- Supports only 16-bits audio data size.
bcostm	0:d83f1c8ca282	82
bcostm	0:d83f1c8ca282	83	b) RECORD A FILE:
bcostm	0:d83f1c8ca282	84	================
bcostm	0:d83f1c8ca282	85	+ Call the function BSP_AUDIO_IN_InitEx(
bcostm	0:d83f1c8ca282	86	InputDevice: physical input mode (INPUT_DEVICE_DIGITAL_MIC
bcostm	0:d83f1c8ca282	87	INPUT_DEVICE_DIGITAL_MIC1, INPUT_DEVICE_DIGITAL_MIC2
bcostm	0:d83f1c8ca282	88	or INPUT_DEVICE_ANALOG_MIC)
bcostm	0:d83f1c8ca282	89	AudioFreq: Audio frequency in Hz (8000, 16000, 22500, 32000 ...)
bcostm	0:d83f1c8ca282	90	)
bcostm	0:d83f1c8ca282	91	This function configures all the hardware required for the audio application (DFSDM or SAI,
bcostm	0:d83f1c8ca282	92	GPIOs, DMA and interrupt if needed). This function returns AUDIO_OK if the
bcostm	0:d83f1c8ca282	93	configuration completes successfully.
bcostm	0:d83f1c8ca282	94	- INPUT_DEVICE_DIGITAL_MIC: Record from digital microphones mounted on board.
bcostm	0:d83f1c8ca282	95	- INPUT_DEVICE_DIGITAL_MIC1: Record from digital microphone 1 mounted on board (left microphone).
bcostm	0:d83f1c8ca282	96	- INPUT_DEVICE_DIGITAL_MIC2: Record from digital microphone 2 mounted on board (right microphone).
bcostm	0:d83f1c8ca282	97	- INPUT_DEVICE_ANALOG_MIC: Record from headset microphone.
bcostm	0:d83f1c8ca282	98
bcostm	0:d83f1c8ca282	99	+ Call the function BSP_AUDIO_IN_RegisterCallbacks to register user callbacks
bcostm	0:d83f1c8ca282	100	used to stream audio data toward the record buffer (ErrorCallback(),
bcostm	0:d83f1c8ca282	101	HalfTransfer_CallBack() and TransferComplete_CallBack()).
bcostm	0:d83f1c8ca282	102
bcostm	0:d83f1c8ca282	103	+ Call the function BSP_AUDIO_IN_Record(
bcostm	0:d83f1c8ca282	104	pbuf Main buffer pointer for the recorded data storing
bcostm	0:d83f1c8ca282	105	size Current size of the recorded buffer
bcostm	0:d83f1c8ca282	106	)
bcostm	0:d83f1c8ca282	107	to start recording from the microphone.
bcostm	0:d83f1c8ca282	108
bcostm	0:d83f1c8ca282	109	+ Call the function BSP_AUDIO_IN_STOP() to stop recording.
bcostm	0:d83f1c8ca282	110	==============================================================================*/
bcostm	0:d83f1c8ca282	111
bcostm	0:d83f1c8ca282	112	/* Includes ------------------------------------------------------------------*/
bcostm	0:d83f1c8ca282	113	#include <string.h>
bcostm	0:d83f1c8ca282	114	#include "stm32l496g_discovery_audio.h"
bcostm	0:d83f1c8ca282	115
bcostm	0:d83f1c8ca282	116	/** @addtogroup BSP
bcostm	0:d83f1c8ca282	117	* @{
bcostm	0:d83f1c8ca282	118	*/
bcostm	0:d83f1c8ca282	119
bcostm	0:d83f1c8ca282	120	/** @addtogroup STM32L496G_DISCOVERY
bcostm	0:d83f1c8ca282	121	* @{
bcostm	0:d83f1c8ca282	122	*/
bcostm	0:d83f1c8ca282	123
bcostm	0:d83f1c8ca282	124	/** @defgroup STM32L496G_DISCOVERY_AUDIO STM32L496G-DISCOVERY AUDIO
bcostm	0:d83f1c8ca282	125	* @brief This file includes the low layer driver for cs42l51 Audio Codec
bcostm	0:d83f1c8ca282	126	* available on STM32L496G-Discovery board (MB1261).
bcostm	0:d83f1c8ca282	127	* @{
bcostm	0:d83f1c8ca282	128	*/
bcostm	0:d83f1c8ca282	129
bcostm	0:d83f1c8ca282	130	/* Private typedef -----------------------------------------------------------*/
bcostm	0:d83f1c8ca282	131	/** @defgroup STM32L496G_DISCOVERY_AUDIO_Private_Types Private Types
bcostm	0:d83f1c8ca282	132	* @{
bcostm	0:d83f1c8ca282	133	*/
bcostm	0:d83f1c8ca282	134	typedef struct
bcostm	0:d83f1c8ca282	135	{
bcostm	0:d83f1c8ca282	136	AUDIO_DrvTypeDef AudioDrv; / Audio codec driver */
bcostm	0:d83f1c8ca282	137	uint32_t OutputDevice; /* Output device */
bcostm	0:d83f1c8ca282	138	uint32_t Frequency; /* Playback frequency */
bcostm	0:d83f1c8ca282	139	uint32_t Volume; /* Playback volume */
bcostm	0:d83f1c8ca282	140	Audio_CallbackTypeDef CbError; /* pointer to the callback function invoked when error occurs */
bcostm	0:d83f1c8ca282	141	Audio_CallbackTypeDef CbHalfTransfer; /* pointer to the callback function invoked when half transfer occurs */
bcostm	0:d83f1c8ca282	142	Audio_CallbackTypeDef CbTransferComplete; /* pointer to the callback function invoked when transfer complete occurs */
bcostm	0:d83f1c8ca282	143	} AUDIO_OUT_TypeDef;
bcostm	0:d83f1c8ca282	144
bcostm	0:d83f1c8ca282	145	typedef struct
bcostm	0:d83f1c8ca282	146	{
bcostm	0:d83f1c8ca282	147	AUDIO_DrvTypeDef AudioDrv; / Audio codec driver */
bcostm	0:d83f1c8ca282	148	DFSDM_Channel_HandleTypeDef hDfsdmLeftChannel; /* DFSDM channel handle used for left channel */
bcostm	0:d83f1c8ca282	149	DFSDM_Channel_HandleTypeDef hDfsdmRightChannel; /* DFSDM channel handle used for right channel */
bcostm	0:d83f1c8ca282	150	DMA_HandleTypeDef hDmaDfsdmLeft; /* DMA handle used for DFSDM regular conversions on left channel */
bcostm	0:d83f1c8ca282	151	DMA_HandleTypeDef hDmaDfsdmRight; /* DMA handle used for DFSDM regular conversions on right channel */
bcostm	0:d83f1c8ca282	152	int32_t LeftRecBuff; / Buffers for left samples */
bcostm	0:d83f1c8ca282	153	int32_t RightRecBuff; / Buffers for right samples */
bcostm	0:d83f1c8ca282	154	uint32_t InputDevice; /* Input device */
bcostm	0:d83f1c8ca282	155	uint32_t Frequency; /* Record Frequency */
bcostm	0:d83f1c8ca282	156	uint32_t BitResolution; /* Record bit resolution */
bcostm	0:d83f1c8ca282	157	uint32_t ChannelNbr; /* Record Channel Number */
bcostm	0:d83f1c8ca282	158	uint16_t pRecBuf; / Pointer to record user buffer */
bcostm	0:d83f1c8ca282	159	uint32_t RecSize; /* Size to record in mono, double size to record in stereo */
bcostm	0:d83f1c8ca282	160	Audio_CallbackTypeDef CbError; /* pointer to the callback function invoked when a DMA transfer fails */
bcostm	0:d83f1c8ca282	161	Audio_CallbackTypeDef CbHalfTransfer; /* pointer to the callback function invoked when half of the DMA transfer is completed */
bcostm	0:d83f1c8ca282	162	Audio_CallbackTypeDef CbTransferComplete; /* pointer to the callback function invoked when the DMA transfer is completed */
bcostm	0:d83f1c8ca282	163	} AUDIO_IN_TypeDef;
bcostm	0:d83f1c8ca282	164
bcostm	0:d83f1c8ca282	165	/**
bcostm	0:d83f1c8ca282	166	* @}
bcostm	0:d83f1c8ca282	167	*/
bcostm	0:d83f1c8ca282	168
bcostm	0:d83f1c8ca282	169	/* Private defines ------------------------------------------------------------*/
bcostm	0:d83f1c8ca282	170	/** @defgroup STM32L496G_DISCOVERY_AUDIO_Private_Constants Private Constants
bcostm	0:d83f1c8ca282	171	* @{
bcostm	0:d83f1c8ca282	172	*/
bcostm	0:d83f1c8ca282	173	/**
bcostm	0:d83f1c8ca282	174	* @}
bcostm	0:d83f1c8ca282	175	*/
bcostm	0:d83f1c8ca282	176
bcostm	0:d83f1c8ca282	177	/* Private macros ------------------------------------------------------------*/
bcostm	0:d83f1c8ca282	178	/** @defgroup STM32L496G_DISCOVERY_AUDIO_Private_Macros Private Macros
bcostm	0:d83f1c8ca282	179	* @{
bcostm	0:d83f1c8ca282	180	*/
bcostm	0:d83f1c8ca282	181	/### PLAY ###/
bcostm	0:d83f1c8ca282	182	/* SCK(kHz) = SAI_CK_x/(SAIClockDivider2256) */
bcostm	0:d83f1c8ca282	183	#define SAIClockDivider(__FREQUENCY__) \
bcostm	0:d83f1c8ca282	184	(__FREQUENCY__ == AUDIO_FREQUENCY_8K) ? 12 \
bcostm	0:d83f1c8ca282	185	: (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? 2 \
bcostm	0:d83f1c8ca282	186	: (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? 6 \
bcostm	0:d83f1c8ca282	187	: (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? 1 \
bcostm	0:d83f1c8ca282	188	: (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? 3 \
bcostm	0:d83f1c8ca282	189	: (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? 0 \
bcostm	0:d83f1c8ca282	190	: (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? 2 : 1 \
bcostm	0:d83f1c8ca282	191
bcostm	0:d83f1c8ca282	192	/### RECORD ###/
bcostm	0:d83f1c8ca282	193	#define DFSDMOverSampling(__FREQUENCY__) \
bcostm	0:d83f1c8ca282	194	(__FREQUENCY__ == AUDIO_FREQUENCY_8K) ? 256 \
bcostm	0:d83f1c8ca282	195	: (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? 256 \
bcostm	0:d83f1c8ca282	196	: (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? 128 \
bcostm	0:d83f1c8ca282	197	: (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? 128 \
bcostm	0:d83f1c8ca282	198	: (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? 64 \
bcostm	0:d83f1c8ca282	199	: (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? 64 \
bcostm	0:d83f1c8ca282	200	: (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? 32 : 16 \
bcostm	0:d83f1c8ca282	201
bcostm	0:d83f1c8ca282	202	#define DFSDMClockDivider(__FREQUENCY__) \
bcostm	0:d83f1c8ca282	203	(__FREQUENCY__ == AUDIO_FREQUENCY_8K) ? 24 \
bcostm	0:d83f1c8ca282	204	: (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? 4 \
bcostm	0:d83f1c8ca282	205	: (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? 24 \
bcostm	0:d83f1c8ca282	206	: (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? 4 \
bcostm	0:d83f1c8ca282	207	: (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? 24 \
bcostm	0:d83f1c8ca282	208	: (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? 4 \
bcostm	0:d83f1c8ca282	209	: (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? 32 : 32 \
bcostm	0:d83f1c8ca282	210
bcostm	0:d83f1c8ca282	211	#define DFSDMFilterOrder(__FREQUENCY__) \
bcostm	0:d83f1c8ca282	212	(__FREQUENCY__ == AUDIO_FREQUENCY_8K) ? DFSDM_FILTER_SINC3_ORDER \
bcostm	0:d83f1c8ca282	213	: (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? DFSDM_FILTER_SINC3_ORDER \
bcostm	0:d83f1c8ca282	214	: (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? DFSDM_FILTER_SINC3_ORDER \
bcostm	0:d83f1c8ca282	215	: (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? DFSDM_FILTER_SINC3_ORDER \
bcostm	0:d83f1c8ca282	216	: (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? DFSDM_FILTER_SINC4_ORDER \
bcostm	0:d83f1c8ca282	217	: (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? DFSDM_FILTER_SINC3_ORDER \
bcostm	0:d83f1c8ca282	218	: (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? DFSDM_FILTER_SINC4_ORDER : DFSDM_FILTER_SINC5_ORDER \
bcostm	0:d83f1c8ca282	219
bcostm	0:d83f1c8ca282	220	#define DFSDMRightBitShift(__FREQUENCY__) \
bcostm	0:d83f1c8ca282	221	(__FREQUENCY__ == AUDIO_FREQUENCY_8K) ? 8 \
bcostm	0:d83f1c8ca282	222	: (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? 8 \
bcostm	0:d83f1c8ca282	223	: (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? 6 \
bcostm	0:d83f1c8ca282	224	: (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? 6 \
bcostm	0:d83f1c8ca282	225	: (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? 8 \
bcostm	0:d83f1c8ca282	226	: (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? 2 \
bcostm	0:d83f1c8ca282	227	: (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? 4 : 4 \
bcostm	0:d83f1c8ca282	228
bcostm	0:d83f1c8ca282	229	/* Saturate the record PCM sample */
bcostm	0:d83f1c8ca282	230	#define SaturaLH(N, L, H) (((N)<(L))?(L):(((N)>(H))?(H):(N)))
bcostm	0:d83f1c8ca282	231
bcostm	0:d83f1c8ca282	232	/**
bcostm	0:d83f1c8ca282	233	* @}
bcostm	0:d83f1c8ca282	234	*/
bcostm	0:d83f1c8ca282	235
bcostm	0:d83f1c8ca282	236	/* Private variables ---------------------------------------------------------*/
bcostm	0:d83f1c8ca282	237	/** @defgroup STM32L496G_DISCOVERY_AUDIO_Private_Variables Private Variables
bcostm	0:d83f1c8ca282	238	* @{
bcostm	0:d83f1c8ca282	239	*/
bcostm	0:d83f1c8ca282	240	/* Audio output context information */
bcostm	0:d83f1c8ca282	241	static AUDIO_OUT_TypeDef hAudioOut = {0};
bcostm	0:d83f1c8ca282	242
bcostm	0:d83f1c8ca282	243	/* Audio input context information */
bcostm	0:d83f1c8ca282	244	static AUDIO_IN_TypeDef hAudioIn = {0};
bcostm	0:d83f1c8ca282	245
bcostm	0:d83f1c8ca282	246	/* SAI DMA handle */
bcostm	0:d83f1c8ca282	247	static DMA_HandleTypeDef hDmaSaiTx;
bcostm	0:d83f1c8ca282	248	static DMA_HandleTypeDef hDmaSaiRx;
bcostm	0:d83f1c8ca282	249
bcostm	0:d83f1c8ca282	250	static uint32_t DmaLeftRecHalfBuffCplt;
bcostm	0:d83f1c8ca282	251	static uint32_t DmaLeftRecBuffCplt;
bcostm	0:d83f1c8ca282	252	static uint32_t DmaRightRecHalfBuffCplt;
bcostm	0:d83f1c8ca282	253	static uint32_t DmaRightRecBuffCplt;
bcostm	0:d83f1c8ca282	254
bcostm	0:d83f1c8ca282	255
bcostm	0:d83f1c8ca282	256	/**
bcostm	0:d83f1c8ca282	257	* @}
bcostm	0:d83f1c8ca282	258	*/
bcostm	0:d83f1c8ca282	259
bcostm	0:d83f1c8ca282	260	/* Exported variables ---------------------------------------------------------*/
bcostm	0:d83f1c8ca282	261	/** @defgroup STM32L496G_DISCOVERY_AUDIO_Exported_Variables Exported Variables
bcostm	0:d83f1c8ca282	262	* @{
bcostm	0:d83f1c8ca282	263	*/
bcostm	0:d83f1c8ca282	264	/* SAIx handle */
bcostm	0:d83f1c8ca282	265	SAI_HandleTypeDef BSP_AUDIO_hSai_Tx;
bcostm	0:d83f1c8ca282	266	SAI_HandleTypeDef BSP_AUDIO_hSai_Rx;
bcostm	0:d83f1c8ca282	267
bcostm	0:d83f1c8ca282	268	/* DFSDM filter handle */
bcostm	0:d83f1c8ca282	269	DFSDM_Filter_HandleTypeDef BSP_AUDIO_hDfsdmLeftFilter;
bcostm	0:d83f1c8ca282	270	DFSDM_Filter_HandleTypeDef BSP_AUDIO_hDfsdmRightFilter;
bcostm	0:d83f1c8ca282	271	/**
bcostm	0:d83f1c8ca282	272	* @}
bcostm	0:d83f1c8ca282	273	*/
bcostm	0:d83f1c8ca282	274
bcostm	0:d83f1c8ca282	275	/* Private function prototypes -----------------------------------------------*/
bcostm	0:d83f1c8ca282	276	/** @defgroup STM32L496G_DISCOVERY_AUDIO_Private_Functions Private Functions
bcostm	0:d83f1c8ca282	277	* @{
bcostm	0:d83f1c8ca282	278	*/
bcostm	0:d83f1c8ca282	279	static uint8_t AUDIO_SAIx_Init(uint32_t AudioFreq);
bcostm	0:d83f1c8ca282	280	static uint8_t AUDIO_SAIx_DeInit(void);
bcostm	0:d83f1c8ca282	281	static uint8_t AUDIO_DFSDMx_Init(uint32_t AudioFreq);
bcostm	0:d83f1c8ca282	282	static uint8_t AUDIO_DFSDMx_DeInit(void);
bcostm	0:d83f1c8ca282	283	static uint8_t AUDIO_SAIPLLConfig(uint32_t AudioFreq);
bcostm	0:d83f1c8ca282	284	/**
bcostm	0:d83f1c8ca282	285	* @}
bcostm	0:d83f1c8ca282	286	*/
bcostm	0:d83f1c8ca282	287
bcostm	0:d83f1c8ca282	288	/* Exported functions --------------------------------------------------------*/
bcostm	0:d83f1c8ca282	289	/** @addtogroup STM32L496G_DISCOVERY_AUDIO_Exported_Functions
bcostm	0:d83f1c8ca282	290	* @{
bcostm	0:d83f1c8ca282	291	*/
bcostm	0:d83f1c8ca282	292
bcostm	0:d83f1c8ca282	293	/**
bcostm	0:d83f1c8ca282	294	* @brief Configures the audio codec related peripherals.
bcostm	0:d83f1c8ca282	295	* @param OutputDevice: OUTPUT_DEVICE_HEADPHONE.
bcostm	0:d83f1c8ca282	296	* @param Volume: Initial volume level (from 0 (Mute) to 100 (Max))
bcostm	0:d83f1c8ca282	297	* @param AudioFreq: Audio frequency used to play the audio stream.
bcostm	0:d83f1c8ca282	298	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	299	* @note The SAI PLL input clock must be configure in the user application.
bcostm	0:d83f1c8ca282	300	* The SAI PLL configuration done within this function assumes that
bcostm	0:d83f1c8ca282	301	* the SAI PLL input clock runs at 8 MHz.
bcostm	0:d83f1c8ca282	302	*/
bcostm	0:d83f1c8ca282	303	uint8_t BSP_AUDIO_OUT_Init(uint16_t OutputDevice,
bcostm	0:d83f1c8ca282	304	uint8_t Volume,
bcostm	0:d83f1c8ca282	305	uint32_t AudioFreq)
bcostm	0:d83f1c8ca282	306	{
bcostm	0:d83f1c8ca282	307	/* Initialize the audio output context */
bcostm	0:d83f1c8ca282	308	hAudioOut.AudioDrv = &cs42l51_drv;
bcostm	0:d83f1c8ca282	309	hAudioOut.OutputDevice = OutputDevice;
bcostm	0:d83f1c8ca282	310	hAudioOut.Frequency = AudioFreq;
bcostm	0:d83f1c8ca282	311	hAudioOut.Volume = Volume;
bcostm	0:d83f1c8ca282	312	hAudioOut.CbError = (Audio_CallbackTypeDef)NULL;
bcostm	0:d83f1c8ca282	313	hAudioOut.CbHalfTransfer = (Audio_CallbackTypeDef)NULL;
bcostm	0:d83f1c8ca282	314	hAudioOut.CbTransferComplete = (Audio_CallbackTypeDef)NULL;
bcostm	0:d83f1c8ca282	315
bcostm	0:d83f1c8ca282	316	/* Check if input device is currently used */
bcostm	0:d83f1c8ca282	317	if (hAudioIn.InputDevice != 0)
bcostm	0:d83f1c8ca282	318	{
bcostm	0:d83f1c8ca282	319	/* If input device is currently used, SAI PLL is already initialized */
bcostm	0:d83f1c8ca282	320	/* Check that AudioFreq for record and playback is the same */
bcostm	0:d83f1c8ca282	321	if (hAudioIn.Frequency != hAudioOut.Frequency)
bcostm	0:d83f1c8ca282	322	{
bcostm	0:d83f1c8ca282	323	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	324	}
bcostm	0:d83f1c8ca282	325	}
bcostm	0:d83f1c8ca282	326	else
bcostm	0:d83f1c8ca282	327	{
bcostm	0:d83f1c8ca282	328	/* Configure the SAI PLL according to the requested audio frequency */
bcostm	0:d83f1c8ca282	329	if (AUDIO_SAIPLLConfig(AudioFreq) != AUDIO_OK)
bcostm	0:d83f1c8ca282	330	{
bcostm	0:d83f1c8ca282	331	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	332	}
bcostm	0:d83f1c8ca282	333	}
bcostm	0:d83f1c8ca282	334
bcostm	0:d83f1c8ca282	335	/* If input device is analogic mic, SAI is already initialized */
bcostm	0:d83f1c8ca282	336	if (hAudioIn.InputDevice != INPUT_DEVICE_ANALOG_MIC)
bcostm	0:d83f1c8ca282	337	{
bcostm	0:d83f1c8ca282	338	/* SAI data transfer preparation: prepare the Media to be used for the audio
bcostm	0:d83f1c8ca282	339	transfer from memory to SAI peripheral. */
bcostm	0:d83f1c8ca282	340	if (AUDIO_SAIx_Init(AudioFreq) != AUDIO_OK)
bcostm	0:d83f1c8ca282	341	{
bcostm	0:d83f1c8ca282	342	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	343	}
bcostm	0:d83f1c8ca282	344	}
bcostm	0:d83f1c8ca282	345
bcostm	0:d83f1c8ca282	346	/* Initialize the audio codec internal registers */
bcostm	0:d83f1c8ca282	347	if (hAudioOut.AudioDrv->Init(AUDIO_I2C_ADDRESS,
bcostm	0:d83f1c8ca282	348	(hAudioOut.OutputDevice \| hAudioIn.InputDevice),
bcostm	0:d83f1c8ca282	349	Volume,
bcostm	0:d83f1c8ca282	350	AudioFreq) != 0)
bcostm	0:d83f1c8ca282	351	{
bcostm	0:d83f1c8ca282	352	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	353	}
bcostm	0:d83f1c8ca282	354
bcostm	0:d83f1c8ca282	355	return AUDIO_OK;
bcostm	0:d83f1c8ca282	356	}
bcostm	0:d83f1c8ca282	357
bcostm	0:d83f1c8ca282	358	/**
bcostm	0:d83f1c8ca282	359	* @brief De-Initializes audio codec related peripherals
bcostm	0:d83f1c8ca282	360	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	361
bcostm	0:d83f1c8ca282	362	*/
bcostm	0:d83f1c8ca282	363	uint8_t BSP_AUDIO_OUT_DeInit(void)
bcostm	0:d83f1c8ca282	364	{
bcostm	0:d83f1c8ca282	365	if (hAudioIn.InputDevice == INPUT_DEVICE_ANALOG_MIC)
bcostm	0:d83f1c8ca282	366	{
bcostm	0:d83f1c8ca282	367	/* Reset playback path on audio codec */
bcostm	0:d83f1c8ca282	368	if (hAudioIn.AudioDrv->Init(AUDIO_I2C_ADDRESS,
bcostm	0:d83f1c8ca282	369	hAudioIn.InputDevice,
bcostm	0:d83f1c8ca282	370	(uint8_t) hAudioOut.Volume,
bcostm	0:d83f1c8ca282	371	hAudioIn.Frequency) != 0)
bcostm	0:d83f1c8ca282	372	{
bcostm	0:d83f1c8ca282	373	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	374	}
bcostm	0:d83f1c8ca282	375	}
bcostm	0:d83f1c8ca282	376	else
bcostm	0:d83f1c8ca282	377	{
bcostm	0:d83f1c8ca282	378	/* De-initializes SAI interface */
bcostm	0:d83f1c8ca282	379	if (AUDIO_SAIx_DeInit() != AUDIO_OK)
bcostm	0:d83f1c8ca282	380	{
bcostm	0:d83f1c8ca282	381	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	382	}
bcostm	0:d83f1c8ca282	383
bcostm	0:d83f1c8ca282	384	/* DeInit audio codec */
bcostm	0:d83f1c8ca282	385	hAudioOut.AudioDrv->DeInit();
bcostm	0:d83f1c8ca282	386	}
bcostm	0:d83f1c8ca282	387
bcostm	0:d83f1c8ca282	388	/* Disable SAI PLL if no more device is used */
bcostm	0:d83f1c8ca282	389	if (hAudioIn.InputDevice == 0)
bcostm	0:d83f1c8ca282	390	{
bcostm	0:d83f1c8ca282	391	if (AUDIO_SAIx_PLL_DISABLE() != AUDIO_OK)
bcostm	0:d83f1c8ca282	392	{
bcostm	0:d83f1c8ca282	393	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	394	}
bcostm	0:d83f1c8ca282	395	}
bcostm	0:d83f1c8ca282	396
bcostm	0:d83f1c8ca282	397	/* Reset the audio output context */
bcostm	0:d83f1c8ca282	398	memset(&hAudioOut, 0, sizeof(hAudioOut));
bcostm	0:d83f1c8ca282	399
bcostm	0:d83f1c8ca282	400	return AUDIO_OK;
bcostm	0:d83f1c8ca282	401	}
bcostm	0:d83f1c8ca282	402
bcostm	0:d83f1c8ca282	403	/**
bcostm	0:d83f1c8ca282	404	* @brief Starts playing audio stream from a data buffer for a determined size.
bcostm	0:d83f1c8ca282	405	* @param pData: pointer on PCM samples buffer
bcostm	0:d83f1c8ca282	406	* @param Size: Number of audio data HALF WORD.
bcostm	0:d83f1c8ca282	407	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	408	*/
bcostm	0:d83f1c8ca282	409	uint8_t BSP_AUDIO_OUT_Play(uint16_t *pData, uint32_t Size)
bcostm	0:d83f1c8ca282	410	{
bcostm	0:d83f1c8ca282	411	/* Initiate a DMA transfer of PCM samples towards the serial audio interface */
bcostm	0:d83f1c8ca282	412	if (HAL_SAI_Transmit_DMA(&BSP_AUDIO_hSai_Tx, (uint8_t *)pData, DMA_MAX(Size)) != HAL_OK)
bcostm	0:d83f1c8ca282	413	{
bcostm	0:d83f1c8ca282	414	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	415	}
bcostm	0:d83f1c8ca282	416
bcostm	0:d83f1c8ca282	417	/* Call the audio Codec Play function */
bcostm	0:d83f1c8ca282	418	if (hAudioOut.AudioDrv->Play(AUDIO_I2C_ADDRESS, pData, Size) != 0)
bcostm	0:d83f1c8ca282	419	{
bcostm	0:d83f1c8ca282	420	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	421	}
bcostm	0:d83f1c8ca282	422
bcostm	0:d83f1c8ca282	423	return AUDIO_OK;
bcostm	0:d83f1c8ca282	424	}
bcostm	0:d83f1c8ca282	425
bcostm	0:d83f1c8ca282	426	/**
bcostm	0:d83f1c8ca282	427	* @brief Sends n-Bytes on the SAI interface.
bcostm	0:d83f1c8ca282	428	* @param pData: pointer on PCM samples buffer
bcostm	0:d83f1c8ca282	429	* @param Size: number of data to be written
bcostm	0:d83f1c8ca282	430	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	431	*/
bcostm	0:d83f1c8ca282	432	uint8_t BSP_AUDIO_OUT_ChangeBuffer(uint16_t *pData, uint16_t Size)
bcostm	0:d83f1c8ca282	433	{
bcostm	0:d83f1c8ca282	434	/* Initiate a DMA transfer of PCM samples towards the serial audio interface */
bcostm	0:d83f1c8ca282	435	if (HAL_SAI_Transmit_DMA(&BSP_AUDIO_hSai_Tx, (uint8_t *)pData, Size) != HAL_OK)
bcostm	0:d83f1c8ca282	436	{
bcostm	0:d83f1c8ca282	437	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	438	}
bcostm	0:d83f1c8ca282	439
bcostm	0:d83f1c8ca282	440	return AUDIO_OK;
bcostm	0:d83f1c8ca282	441	}
bcostm	0:d83f1c8ca282	442
bcostm	0:d83f1c8ca282	443	/**
bcostm	0:d83f1c8ca282	444	* @brief This function Pauses the audio file stream. In case
bcostm	0:d83f1c8ca282	445	* of using DMA, the DMA Pause feature is used.
bcostm	0:d83f1c8ca282	446	* @note When calling BSP_AUDIO_OUT_Pause() function for pause, only
bcostm	0:d83f1c8ca282	447	* BSP_AUDIO_OUT_Resume() function should be called for resume
bcostm	0:d83f1c8ca282	448	* (use of BSP_AUDIO_OUT_Play() function for resume could lead
bcostm	0:d83f1c8ca282	449	* to unexpected behavior).
bcostm	0:d83f1c8ca282	450	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	451	*/
bcostm	0:d83f1c8ca282	452	uint8_t BSP_AUDIO_OUT_Pause(void)
bcostm	0:d83f1c8ca282	453	{
bcostm	0:d83f1c8ca282	454	/* Call the Audio Codec Pause function */
bcostm	0:d83f1c8ca282	455	if (hAudioOut.AudioDrv->Pause(AUDIO_I2C_ADDRESS) != 0)
bcostm	0:d83f1c8ca282	456	{
bcostm	0:d83f1c8ca282	457	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	458	}
bcostm	0:d83f1c8ca282	459
bcostm	0:d83f1c8ca282	460	/* Pause DMA transfer of PCM samples towards the serial audio interface */
bcostm	0:d83f1c8ca282	461	if (HAL_SAI_DMAPause(&BSP_AUDIO_hSai_Tx) != HAL_OK)
bcostm	0:d83f1c8ca282	462	{
bcostm	0:d83f1c8ca282	463	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	464	}
bcostm	0:d83f1c8ca282	465
bcostm	0:d83f1c8ca282	466	return AUDIO_OK;
bcostm	0:d83f1c8ca282	467	}
bcostm	0:d83f1c8ca282	468
bcostm	0:d83f1c8ca282	469	/**
bcostm	0:d83f1c8ca282	470	* @brief This function Resumes the audio file stream.
bcostm	0:d83f1c8ca282	471	* @note When calling BSP_AUDIO_OUT_Pause() function for pause, only
bcostm	0:d83f1c8ca282	472	* BSP_AUDIO_OUT_Resume() function should be called for resume
bcostm	0:d83f1c8ca282	473	* (use of BSP_AUDIO_OUT_Play() function for resume could lead to
bcostm	0:d83f1c8ca282	474	* unexpected behavior).
bcostm	0:d83f1c8ca282	475	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	476	*/
bcostm	0:d83f1c8ca282	477	uint8_t BSP_AUDIO_OUT_Resume(void)
bcostm	0:d83f1c8ca282	478	{
bcostm	0:d83f1c8ca282	479	/* Call the Audio Codec Resume function */
bcostm	0:d83f1c8ca282	480	if (hAudioOut.AudioDrv->Resume(AUDIO_I2C_ADDRESS) != 0)
bcostm	0:d83f1c8ca282	481	{
bcostm	0:d83f1c8ca282	482	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	483	}
bcostm	0:d83f1c8ca282	484
bcostm	0:d83f1c8ca282	485	/* Resume DMA transfer of PCM samples towards the serial audio interface */
bcostm	0:d83f1c8ca282	486	if (HAL_SAI_DMAResume(&BSP_AUDIO_hSai_Tx) != HAL_OK)
bcostm	0:d83f1c8ca282	487	{
bcostm	0:d83f1c8ca282	488	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	489	}
bcostm	0:d83f1c8ca282	490
bcostm	0:d83f1c8ca282	491	return AUDIO_OK;
bcostm	0:d83f1c8ca282	492	}
bcostm	0:d83f1c8ca282	493
bcostm	0:d83f1c8ca282	494	/**
bcostm	0:d83f1c8ca282	495	* @brief Stops audio playing and Power down the Audio Codec.
bcostm	0:d83f1c8ca282	496	* @param Option: could be one of the following parameters
bcostm	0:d83f1c8ca282	497	* - CODEC_PDWN_SW: for software power off (by writing registers).
bcostm	0:d83f1c8ca282	498	* Then no need to reconfigure the Codec after power on.
bcostm	0:d83f1c8ca282	499	* - CODEC_PDWN_HW: completely shut down the codec (physically).
bcostm	0:d83f1c8ca282	500	* Then need to reconfigure the Codec after power on.
bcostm	0:d83f1c8ca282	501	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	502	*/
bcostm	0:d83f1c8ca282	503	uint8_t BSP_AUDIO_OUT_Stop(uint32_t Option)
bcostm	0:d83f1c8ca282	504	{
bcostm	0:d83f1c8ca282	505	/* Prevent unused argument(s) compilation warning */
bcostm	0:d83f1c8ca282	506	UNUSED(Option);
bcostm	0:d83f1c8ca282	507
bcostm	0:d83f1c8ca282	508	/* Call Audio Codec Stop function */
bcostm	0:d83f1c8ca282	509	if (hAudioOut.AudioDrv->Stop(AUDIO_I2C_ADDRESS, Option) != 0)
bcostm	0:d83f1c8ca282	510	{
bcostm	0:d83f1c8ca282	511	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	512	}
bcostm	0:d83f1c8ca282	513
bcostm	0:d83f1c8ca282	514	/* Wait at least 100ms */
bcostm	0:d83f1c8ca282	515	HAL_Delay(100);
bcostm	0:d83f1c8ca282	516
bcostm	0:d83f1c8ca282	517	/* Stop DMA transfer of PCM samples towards the serial audio interface */
bcostm	0:d83f1c8ca282	518	if (HAL_SAI_DMAStop(&BSP_AUDIO_hSai_Tx) != HAL_OK)
bcostm	0:d83f1c8ca282	519	{
bcostm	0:d83f1c8ca282	520	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	521	}
bcostm	0:d83f1c8ca282	522
bcostm	0:d83f1c8ca282	523	return AUDIO_OK;
bcostm	0:d83f1c8ca282	524	}
bcostm	0:d83f1c8ca282	525
bcostm	0:d83f1c8ca282	526	/**
bcostm	0:d83f1c8ca282	527	* @brief Controls the current audio volume level.
bcostm	0:d83f1c8ca282	528	* @param Volume: Volume level to be set in percentage from 0% to 100% (0 for
bcostm	0:d83f1c8ca282	529	* Mute and 100 for Max volume level).
bcostm	0:d83f1c8ca282	530	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	531	*/
bcostm	0:d83f1c8ca282	532	uint8_t BSP_AUDIO_OUT_SetVolume(uint8_t Volume)
bcostm	0:d83f1c8ca282	533	{
bcostm	0:d83f1c8ca282	534	/* Call the codec volume control function with converted volume value */
bcostm	0:d83f1c8ca282	535	if (hAudioOut.AudioDrv->SetVolume(AUDIO_I2C_ADDRESS, Volume) != 0)
bcostm	0:d83f1c8ca282	536	{
bcostm	0:d83f1c8ca282	537	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	538	}
bcostm	0:d83f1c8ca282	539
bcostm	0:d83f1c8ca282	540	hAudioOut.Volume = Volume;
bcostm	0:d83f1c8ca282	541
bcostm	0:d83f1c8ca282	542	return AUDIO_OK;
bcostm	0:d83f1c8ca282	543	}
bcostm	0:d83f1c8ca282	544
bcostm	0:d83f1c8ca282	545	/**
bcostm	0:d83f1c8ca282	546	* @brief Enables or disables the MUTE mode by software
bcostm	0:d83f1c8ca282	547	* @param Cmd: Could be AUDIO_MUTE_ON to mute sound or AUDIO_MUTE_OFF to
bcostm	0:d83f1c8ca282	548	* unmute the codec and restore previous volume level.
bcostm	0:d83f1c8ca282	549	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	550	*/
bcostm	0:d83f1c8ca282	551	uint8_t BSP_AUDIO_OUT_SetMute(uint32_t Cmd)
bcostm	0:d83f1c8ca282	552	{
bcostm	0:d83f1c8ca282	553	/* Call the Codec Mute function */
bcostm	0:d83f1c8ca282	554	if (hAudioOut.AudioDrv->SetMute(AUDIO_I2C_ADDRESS, Cmd) != 0)
bcostm	0:d83f1c8ca282	555	{
bcostm	0:d83f1c8ca282	556	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	557	}
bcostm	0:d83f1c8ca282	558
bcostm	0:d83f1c8ca282	559	return AUDIO_OK;
bcostm	0:d83f1c8ca282	560	}
bcostm	0:d83f1c8ca282	561
bcostm	0:d83f1c8ca282	562	/**
bcostm	0:d83f1c8ca282	563	* @brief Switch dynamically (while audio file is being played) the output
bcostm	0:d83f1c8ca282	564	* target (speaker or headphone).
bcostm	0:d83f1c8ca282	565	* @param Output: The audio output target: OUTPUT_DEVICE_SPEAKER,
bcostm	0:d83f1c8ca282	566	* OUTPUT_DEVICE_HEADPHONE or OUTPUT_DEVICE_BOTH
bcostm	0:d83f1c8ca282	567	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	568	*/
bcostm	0:d83f1c8ca282	569	uint8_t BSP_AUDIO_OUT_SetOutputMode(uint8_t Output)
bcostm	0:d83f1c8ca282	570	{
bcostm	0:d83f1c8ca282	571	/* Call the Codec output device function */
bcostm	0:d83f1c8ca282	572	if (hAudioOut.AudioDrv->SetOutputMode(AUDIO_I2C_ADDRESS, Output) != 0)
bcostm	0:d83f1c8ca282	573	{
bcostm	0:d83f1c8ca282	574	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	575	}
bcostm	0:d83f1c8ca282	576
bcostm	0:d83f1c8ca282	577	return AUDIO_OK;
bcostm	0:d83f1c8ca282	578	}
bcostm	0:d83f1c8ca282	579
bcostm	0:d83f1c8ca282	580	/**
bcostm	0:d83f1c8ca282	581	* @brief Updates the audio frequency.
bcostm	0:d83f1c8ca282	582	* @param AudioFreq: Audio frequency used to play the audio stream.
bcostm	0:d83f1c8ca282	583	* @note The SAI PLL input clock must be configure in the user application.
bcostm	0:d83f1c8ca282	584	* The SAI PLL configuration done within this function assumes that
bcostm	0:d83f1c8ca282	585	* the SAI PLL input clock runs at 8 MHz.
bcostm	0:d83f1c8ca282	586	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	587	*/
bcostm	0:d83f1c8ca282	588	uint8_t BSP_AUDIO_OUT_SetFrequency(uint32_t AudioFreq)
bcostm	0:d83f1c8ca282	589	{
bcostm	0:d83f1c8ca282	590	uint8_t TxData[2] = {0x00, 0x00};
bcostm	0:d83f1c8ca282	591
bcostm	0:d83f1c8ca282	592	/* Configure the SAI PLL according to the requested audio frequency */
bcostm	0:d83f1c8ca282	593	if (AUDIO_SAIPLLConfig(AudioFreq) != AUDIO_OK)
bcostm	0:d83f1c8ca282	594	{
bcostm	0:d83f1c8ca282	595	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	596	}
bcostm	0:d83f1c8ca282	597
bcostm	0:d83f1c8ca282	598	/* Disable SAI peripheral to allow access to SAI internal registers */
bcostm	0:d83f1c8ca282	599	__HAL_SAI_DISABLE(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	600	__HAL_SAI_DISABLE(&BSP_AUDIO_hSai_Rx);
bcostm	0:d83f1c8ca282	601
bcostm	0:d83f1c8ca282	602	/* Update the SAI audio frequency configuration */
bcostm	0:d83f1c8ca282	603	BSP_AUDIO_hSai_Tx.Init.Mckdiv = SAIClockDivider(AudioFreq);
bcostm	0:d83f1c8ca282	604	HAL_SAI_Init(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	605	BSP_AUDIO_hSai_Rx.Init.Mckdiv = SAIClockDivider(AudioFreq);
bcostm	0:d83f1c8ca282	606	HAL_SAI_Init(&BSP_AUDIO_hSai_Rx);
bcostm	0:d83f1c8ca282	607
bcostm	0:d83f1c8ca282	608	/* Enable SAI peripheral to generate MCLK */
bcostm	0:d83f1c8ca282	609	__HAL_SAI_ENABLE(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	610	/* Transmit one byte to start FS generation */
bcostm	0:d83f1c8ca282	611	if (HAL_SAI_Transmit(&BSP_AUDIO_hSai_Tx, TxData, 2, 1000) != HAL_OK)
bcostm	0:d83f1c8ca282	612	{
bcostm	0:d83f1c8ca282	613	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	614	}
bcostm	0:d83f1c8ca282	615
bcostm	0:d83f1c8ca282	616	hAudioOut.Frequency = AudioFreq;
bcostm	0:d83f1c8ca282	617
bcostm	0:d83f1c8ca282	618	return AUDIO_OK;
bcostm	0:d83f1c8ca282	619	}
bcostm	0:d83f1c8ca282	620
bcostm	0:d83f1c8ca282	621	/**
bcostm	0:d83f1c8ca282	622	* @brief Changes the Audio Out Configuration.
bcostm	0:d83f1c8ca282	623	* @param AudioOutOption: specifies the audio out new configuration
bcostm	0:d83f1c8ca282	624	* This parameter can be any value of @ref BSP_Audio_Out_Option
bcostm	0:d83f1c8ca282	625	* @note This API should be called after the BSP_AUDIO_OUT_Init() to adjust the
bcostm	0:d83f1c8ca282	626	* audio out configuration.
bcostm	0:d83f1c8ca282	627	* @retval None
bcostm	0:d83f1c8ca282	628	*/
bcostm	0:d83f1c8ca282	629	void BSP_AUDIO_OUT_ChangeAudioConfig(uint32_t AudioOutOption)
bcostm	0:d83f1c8ca282	630	{
bcostm	0:d83f1c8ca282	631	uint8_t TxData[2] = {0x00, 0x00};
bcostm	0:d83f1c8ca282	632
bcostm	0:d83f1c8ca282	633	/******** Playback Buffer circular/normal mode ********/
bcostm	0:d83f1c8ca282	634	if (AudioOutOption & BSP_AUDIO_OUT_CIRCULARMODE)
bcostm	0:d83f1c8ca282	635	{
bcostm	0:d83f1c8ca282	636	/* Deinitialize the Stream to update DMA mode */
bcostm	0:d83f1c8ca282	637	HAL_DMA_DeInit(BSP_AUDIO_hSai_Tx.hdmatx);
bcostm	0:d83f1c8ca282	638
bcostm	0:d83f1c8ca282	639	/* Update the SAI audio Transfer DMA mode */
bcostm	0:d83f1c8ca282	640	BSP_AUDIO_hSai_Tx.hdmatx->Init.Mode = DMA_CIRCULAR;
bcostm	0:d83f1c8ca282	641
bcostm	0:d83f1c8ca282	642	/* Configure the DMA Stream with new Transfer DMA mode */
bcostm	0:d83f1c8ca282	643	HAL_DMA_Init(BSP_AUDIO_hSai_Tx.hdmatx);
bcostm	0:d83f1c8ca282	644	}
bcostm	0:d83f1c8ca282	645	else /* BSP_AUDIO_OUT_NORMALMODE */
bcostm	0:d83f1c8ca282	646	{
bcostm	0:d83f1c8ca282	647	/* Deinitialize the Stream to update DMA mode */
bcostm	0:d83f1c8ca282	648	HAL_DMA_DeInit(BSP_AUDIO_hSai_Tx.hdmatx);
bcostm	0:d83f1c8ca282	649
bcostm	0:d83f1c8ca282	650	/* Update the SAI audio Transfer DMA mode */
bcostm	0:d83f1c8ca282	651	BSP_AUDIO_hSai_Tx.hdmatx->Init.Mode = DMA_NORMAL;
bcostm	0:d83f1c8ca282	652
bcostm	0:d83f1c8ca282	653	/* Configure the DMA Stream with new Transfer DMA mode */
bcostm	0:d83f1c8ca282	654	HAL_DMA_Init(BSP_AUDIO_hSai_Tx.hdmatx);
bcostm	0:d83f1c8ca282	655	}
bcostm	0:d83f1c8ca282	656
bcostm	0:d83f1c8ca282	657	/******** Playback Buffer stereo/mono mode ********/
bcostm	0:d83f1c8ca282	658	if (AudioOutOption & BSP_AUDIO_OUT_STEREOMODE)
bcostm	0:d83f1c8ca282	659	{
bcostm	0:d83f1c8ca282	660	/* Disable SAI peripheral to allow access to SAI internal registers */
bcostm	0:d83f1c8ca282	661	__HAL_SAI_DISABLE(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	662
bcostm	0:d83f1c8ca282	663	/* Update the SAI audio frame slot configuration */
bcostm	0:d83f1c8ca282	664	BSP_AUDIO_hSai_Tx.Init.MonoStereoMode = SAI_STEREOMODE;
bcostm	0:d83f1c8ca282	665	HAL_SAI_Init(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	666
bcostm	0:d83f1c8ca282	667	/* Enable SAI peripheral to generate MCLK */
bcostm	0:d83f1c8ca282	668	__HAL_SAI_ENABLE(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	669	/* Transmit one byte to start FS generation */
bcostm	0:d83f1c8ca282	670	HAL_SAI_Transmit(&BSP_AUDIO_hSai_Tx, TxData, 2, 1000);
bcostm	0:d83f1c8ca282	671	}
bcostm	0:d83f1c8ca282	672	else /* BSP_AUDIO_OUT_MONOMODE */
bcostm	0:d83f1c8ca282	673	{
bcostm	0:d83f1c8ca282	674	/* Disable SAI peripheral to allow access to SAI internal registers */
bcostm	0:d83f1c8ca282	675	__HAL_SAI_DISABLE(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	676
bcostm	0:d83f1c8ca282	677	/* Update the SAI audio frame slot configuration */
bcostm	0:d83f1c8ca282	678	BSP_AUDIO_hSai_Tx.Init.MonoStereoMode = SAI_MONOMODE;
bcostm	0:d83f1c8ca282	679	HAL_SAI_Init(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	680
bcostm	0:d83f1c8ca282	681	/* Enable SAI peripheral to generate MCLK */
bcostm	0:d83f1c8ca282	682	__HAL_SAI_ENABLE(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	683	/* Transmit one byte to start FS generation */
bcostm	0:d83f1c8ca282	684	HAL_SAI_Transmit(&BSP_AUDIO_hSai_Tx, TxData, 2, 1000);
bcostm	0:d83f1c8ca282	685	}
bcostm	0:d83f1c8ca282	686	}
bcostm	0:d83f1c8ca282	687
bcostm	0:d83f1c8ca282	688	/**
bcostm	0:d83f1c8ca282	689	* @brief register user callback functions
bcostm	0:d83f1c8ca282	690	* @param ErrorCallback: pointer to the error callback function
bcostm	0:d83f1c8ca282	691	* @param HalfTransferCallback: pointer to the half transfer callback function
bcostm	0:d83f1c8ca282	692	* @param TransferCompleteCallback: pointer to the transfer complete callback function
bcostm	0:d83f1c8ca282	693	* @retval None
bcostm	0:d83f1c8ca282	694	*/
bcostm	0:d83f1c8ca282	695	void BSP_AUDIO_OUT_RegisterCallbacks(Audio_CallbackTypeDef ErrorCallback,
bcostm	0:d83f1c8ca282	696	Audio_CallbackTypeDef HalfTransferCallback,
bcostm	0:d83f1c8ca282	697	Audio_CallbackTypeDef TransferCompleteCallback)
bcostm	0:d83f1c8ca282	698	{
bcostm	0:d83f1c8ca282	699	hAudioOut.CbError = ErrorCallback;
bcostm	0:d83f1c8ca282	700	hAudioOut.CbHalfTransfer = HalfTransferCallback;
bcostm	0:d83f1c8ca282	701	hAudioOut.CbTransferComplete = TransferCompleteCallback;
bcostm	0:d83f1c8ca282	702	}
bcostm	0:d83f1c8ca282	703
bcostm	0:d83f1c8ca282	704	/**
bcostm	0:d83f1c8ca282	705	* @brief Tx Transfer completed callbacks.
bcostm	0:d83f1c8ca282	706	* @param hsai: SAI handle
bcostm	0:d83f1c8ca282	707	* @retval None
bcostm	0:d83f1c8ca282	708	*/
bcostm	0:d83f1c8ca282	709	void HAL_SAI_TxCpltCallback(SAI_HandleTypeDef *hsai)
bcostm	0:d83f1c8ca282	710	{
bcostm	0:d83f1c8ca282	711	/* Invoke the registered 'TransferComplete' function (if any) */
bcostm	0:d83f1c8ca282	712	if (hAudioOut.CbTransferComplete != (Audio_CallbackTypeDef)NULL)
bcostm	0:d83f1c8ca282	713	{
bcostm	0:d83f1c8ca282	714	hAudioOut.CbTransferComplete();
bcostm	0:d83f1c8ca282	715	}
bcostm	0:d83f1c8ca282	716	}
bcostm	0:d83f1c8ca282	717
bcostm	0:d83f1c8ca282	718	/**
bcostm	0:d83f1c8ca282	719	* @brief Tx Half Transfer completed callbacks.
bcostm	0:d83f1c8ca282	720	* @param hsai: SAI handle
bcostm	0:d83f1c8ca282	721	* @retval None
bcostm	0:d83f1c8ca282	722	*/
bcostm	0:d83f1c8ca282	723	void HAL_SAI_TxHalfCpltCallback(SAI_HandleTypeDef *hsai)
bcostm	0:d83f1c8ca282	724	{
bcostm	0:d83f1c8ca282	725	/* Invoke the registered 'HalfTransfer' callback function (if any) */
bcostm	0:d83f1c8ca282	726	if (hAudioOut.CbHalfTransfer != (Audio_CallbackTypeDef)NULL)
bcostm	0:d83f1c8ca282	727	{
bcostm	0:d83f1c8ca282	728	hAudioOut.CbHalfTransfer();
bcostm	0:d83f1c8ca282	729	}
bcostm	0:d83f1c8ca282	730	}
bcostm	0:d83f1c8ca282	731
bcostm	0:d83f1c8ca282	732	/**
bcostm	0:d83f1c8ca282	733	* @brief SAI error callbacks.
bcostm	0:d83f1c8ca282	734	* @param hsai: SAI handle
bcostm	0:d83f1c8ca282	735	* @retval None
bcostm	0:d83f1c8ca282	736	*/
bcostm	0:d83f1c8ca282	737	void HAL_SAI_ErrorCallback(SAI_HandleTypeDef *hsai)
bcostm	0:d83f1c8ca282	738	{
bcostm	0:d83f1c8ca282	739	/* Invoke the registered 'ErrorCallback' callback function (if any) */
bcostm	0:d83f1c8ca282	740	if (hAudioOut.CbError != (Audio_CallbackTypeDef)NULL)
bcostm	0:d83f1c8ca282	741	{
bcostm	0:d83f1c8ca282	742	hAudioOut.CbError();
bcostm	0:d83f1c8ca282	743	}
bcostm	0:d83f1c8ca282	744	/* Invoke the registered 'ErrorCallback' callback function (if any) */
bcostm	0:d83f1c8ca282	745	if (hAudioIn.CbError != (Audio_CallbackTypeDef)NULL)
bcostm	0:d83f1c8ca282	746	{
bcostm	0:d83f1c8ca282	747	hAudioIn.CbError();
bcostm	0:d83f1c8ca282	748	}
bcostm	0:d83f1c8ca282	749	}
bcostm	0:d83f1c8ca282	750
bcostm	0:d83f1c8ca282	751	/**
bcostm	0:d83f1c8ca282	752	* @}
bcostm	0:d83f1c8ca282	753	*/
bcostm	0:d83f1c8ca282	754
bcostm	0:d83f1c8ca282	755	/** @addtogroup STM32L496G_EVAL_AUDIO_Exported_Functions
bcostm	0:d83f1c8ca282	756	* @{
bcostm	0:d83f1c8ca282	757	*/
bcostm	0:d83f1c8ca282	758
bcostm	0:d83f1c8ca282	759	/**
bcostm	0:d83f1c8ca282	760	* @brief Initializes micropone related peripherals.
bcostm	0:d83f1c8ca282	761	* @note This function assumes that the SAI input clock (through PLL_M)
bcostm	0:d83f1c8ca282	762	* is already configured and ready to be used.
bcostm	0:d83f1c8ca282	763	* @param AudioFreq: Audio frequency to be configured for the SAI peripheral.
bcostm	0:d83f1c8ca282	764	* @param BitRes: Audio frequency to be configured for the SAI peripheral.
bcostm	0:d83f1c8ca282	765	* @param ChnlNbr: Audio frequency to be configured for the SAI peripheral.
bcostm	0:d83f1c8ca282	766	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	767	*/
bcostm	0:d83f1c8ca282	768	uint8_t BSP_AUDIO_IN_Init(uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
bcostm	0:d83f1c8ca282	769	{
bcostm	0:d83f1c8ca282	770	return BSP_AUDIO_IN_InitEx(INPUT_DEVICE_DIGITAL_MIC, AudioFreq, BitRes, ChnlNbr);
bcostm	0:d83f1c8ca282	771	}
bcostm	0:d83f1c8ca282	772
bcostm	0:d83f1c8ca282	773	/**
bcostm	0:d83f1c8ca282	774	* @brief Initialize wave recording.
bcostm	0:d83f1c8ca282	775	* @param InputDevice: INPUT_DEVICE_DIGITAL_MIC, INPUT_DEVICE_DIGITAL_MIC1,
bcostm	0:d83f1c8ca282	776	* INPUT_DEVICE_DIGITAL_MIC2 or INPUT_DEVICE_ANALOG_MIC.
bcostm	0:d83f1c8ca282	777	* @param AudioFreq: Audio frequency to be configured.
bcostm	0:d83f1c8ca282	778	* @param BitRes: Audio bit resolution to be configured..
bcostm	0:d83f1c8ca282	779	* @param ChnlNbr: Number of channel to be configured.
bcostm	0:d83f1c8ca282	780	* @retval AUDIO_OK if correct communication, else wrong communication
bcostm	0:d83f1c8ca282	781	*/
bcostm	0:d83f1c8ca282	782	uint8_t BSP_AUDIO_IN_InitEx(uint16_t InputDevice, uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
bcostm	0:d83f1c8ca282	783	{
bcostm	0:d83f1c8ca282	784	/* Update the audio input context */
bcostm	0:d83f1c8ca282	785	hAudioIn.AudioDrv = &cs42l51_drv;
bcostm	0:d83f1c8ca282	786	hAudioIn.InputDevice = InputDevice;
bcostm	0:d83f1c8ca282	787	hAudioIn.Frequency = AudioFreq;
bcostm	0:d83f1c8ca282	788	hAudioIn.BitResolution = BitRes;
bcostm	0:d83f1c8ca282	789	hAudioIn.ChannelNbr = ChnlNbr;
bcostm	0:d83f1c8ca282	790	hAudioIn.CbError = (Audio_CallbackTypeDef)NULL;
bcostm	0:d83f1c8ca282	791	hAudioIn.CbHalfTransfer = (Audio_CallbackTypeDef)NULL;
bcostm	0:d83f1c8ca282	792	hAudioIn.CbTransferComplete = (Audio_CallbackTypeDef)NULL;
bcostm	0:d83f1c8ca282	793
bcostm	0:d83f1c8ca282	794	/* Check channel number according device : only record mono with analog mic and stereo with digital mic are allowed */
bcostm	0:d83f1c8ca282	795	if (((InputDevice == INPUT_DEVICE_DIGITAL_MIC) && (ChnlNbr == 1)) \|\|
bcostm	0:d83f1c8ca282	796	((InputDevice == INPUT_DEVICE_DIGITAL_MIC1) && (ChnlNbr == 2)) \|\|
bcostm	0:d83f1c8ca282	797	((InputDevice == INPUT_DEVICE_DIGITAL_MIC2) && (ChnlNbr == 2)) \|\|
bcostm	0:d83f1c8ca282	798	((InputDevice == INPUT_DEVICE_ANALOG_MIC) && (ChnlNbr == 2)))
bcostm	0:d83f1c8ca282	799	{
bcostm	0:d83f1c8ca282	800	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	801	}
bcostm	0:d83f1c8ca282	802
bcostm	0:d83f1c8ca282	803	/* Check if output device is currently used */
bcostm	0:d83f1c8ca282	804	if (hAudioOut.OutputDevice != 0)
bcostm	0:d83f1c8ca282	805	{
bcostm	0:d83f1c8ca282	806	/* If output device is currently used, SAI PLL is already initialized */
bcostm	0:d83f1c8ca282	807	/* Check that AudioFreq for record and playback is the same */
bcostm	0:d83f1c8ca282	808	if (hAudioIn.Frequency != hAudioOut.Frequency)
bcostm	0:d83f1c8ca282	809	{
bcostm	0:d83f1c8ca282	810	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	811	}
bcostm	0:d83f1c8ca282	812	}
bcostm	0:d83f1c8ca282	813	else
bcostm	0:d83f1c8ca282	814	{
bcostm	0:d83f1c8ca282	815	/* Configure the SAI PLL according to the requested audio frequency */
bcostm	0:d83f1c8ca282	816	if (AUDIO_SAIPLLConfig(AudioFreq) != AUDIO_OK)
bcostm	0:d83f1c8ca282	817	{
bcostm	0:d83f1c8ca282	818	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	819	}
bcostm	0:d83f1c8ca282	820	}
bcostm	0:d83f1c8ca282	821
bcostm	0:d83f1c8ca282	822	if (InputDevice != INPUT_DEVICE_ANALOG_MIC)
bcostm	0:d83f1c8ca282	823	{
bcostm	0:d83f1c8ca282	824	/* Initializes the Digital Filter for Sigma-Delta Modulators interface */
bcostm	0:d83f1c8ca282	825	if (AUDIO_DFSDMx_Init(AudioFreq) != AUDIO_OK)
bcostm	0:d83f1c8ca282	826	{
bcostm	0:d83f1c8ca282	827	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	828	}
bcostm	0:d83f1c8ca282	829	}
bcostm	0:d83f1c8ca282	830	else
bcostm	0:d83f1c8ca282	831	{
bcostm	0:d83f1c8ca282	832	/* INPUT_DEVICE_ANALOG_MIC */
bcostm	0:d83f1c8ca282	833	/* If output device is currently used, SAI is already initialized */
bcostm	0:d83f1c8ca282	834	if (hAudioOut.OutputDevice == 0)
bcostm	0:d83f1c8ca282	835	{
bcostm	0:d83f1c8ca282	836	/* SAI data transfer preparation: prepare the Media to be used for the audio
bcostm	0:d83f1c8ca282	837	transfer from SAI peripheral to memory. */
bcostm	0:d83f1c8ca282	838	if (AUDIO_SAIx_Init(AudioFreq) != AUDIO_OK)
bcostm	0:d83f1c8ca282	839	{
bcostm	0:d83f1c8ca282	840	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	841	}
bcostm	0:d83f1c8ca282	842	}
bcostm	0:d83f1c8ca282	843
bcostm	0:d83f1c8ca282	844	/* Initialize the audio codec internal registers */
bcostm	0:d83f1c8ca282	845	if (hAudioIn.AudioDrv->Init(AUDIO_I2C_ADDRESS,
bcostm	0:d83f1c8ca282	846	(hAudioOut.OutputDevice \| hAudioIn.InputDevice),
bcostm	0:d83f1c8ca282	847	hAudioOut.Volume,
bcostm	0:d83f1c8ca282	848	AudioFreq) != 0)
bcostm	0:d83f1c8ca282	849	{
bcostm	0:d83f1c8ca282	850	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	851	}
bcostm	0:d83f1c8ca282	852	}
bcostm	0:d83f1c8ca282	853
bcostm	0:d83f1c8ca282	854	/* Initialise transfer control flag */
bcostm	0:d83f1c8ca282	855	DmaLeftRecHalfBuffCplt = 0;
bcostm	0:d83f1c8ca282	856	DmaLeftRecBuffCplt = 0;
bcostm	0:d83f1c8ca282	857	DmaRightRecHalfBuffCplt = 0;
bcostm	0:d83f1c8ca282	858	DmaRightRecBuffCplt = 0;
bcostm	0:d83f1c8ca282	859
bcostm	0:d83f1c8ca282	860	return AUDIO_OK;
bcostm	0:d83f1c8ca282	861	}
bcostm	0:d83f1c8ca282	862
bcostm	0:d83f1c8ca282	863	/**
bcostm	0:d83f1c8ca282	864	* @brief De-Initializes microphone related peripherals.
bcostm	0:d83f1c8ca282	865	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	866
bcostm	0:d83f1c8ca282	867	*/
bcostm	0:d83f1c8ca282	868	uint8_t BSP_AUDIO_IN_DeInit(void)
bcostm	0:d83f1c8ca282	869	{
bcostm	0:d83f1c8ca282	870	if (hAudioIn.InputDevice != INPUT_DEVICE_ANALOG_MIC)
bcostm	0:d83f1c8ca282	871	{
bcostm	0:d83f1c8ca282	872	/* De-initializes the Digital Filter for Sigma-Delta Modulators interface */
bcostm	0:d83f1c8ca282	873	if (AUDIO_DFSDMx_DeInit() != AUDIO_OK)
bcostm	0:d83f1c8ca282	874	{
bcostm	0:d83f1c8ca282	875	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	876	}
bcostm	0:d83f1c8ca282	877	}
bcostm	0:d83f1c8ca282	878	else
bcostm	0:d83f1c8ca282	879	{
bcostm	0:d83f1c8ca282	880	/* INPUT_DEVICE_ANALOG_MIC */
bcostm	0:d83f1c8ca282	881	/* Check if output device is currently used */
bcostm	0:d83f1c8ca282	882	if (hAudioOut.OutputDevice != 0)
bcostm	0:d83f1c8ca282	883	{
bcostm	0:d83f1c8ca282	884	/* Reset record path on audio codec */
bcostm	0:d83f1c8ca282	885	if (hAudioOut.AudioDrv->Init(AUDIO_I2C_ADDRESS,
bcostm	0:d83f1c8ca282	886	hAudioOut.OutputDevice,
bcostm	0:d83f1c8ca282	887	(uint8_t) hAudioOut.Volume,
bcostm	0:d83f1c8ca282	888	hAudioOut.Frequency) != 0)
bcostm	0:d83f1c8ca282	889	{
bcostm	0:d83f1c8ca282	890	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	891	}
bcostm	0:d83f1c8ca282	892	}
bcostm	0:d83f1c8ca282	893	else
bcostm	0:d83f1c8ca282	894	{
bcostm	0:d83f1c8ca282	895	/* De-initializes SAI interface */
bcostm	0:d83f1c8ca282	896	if (AUDIO_SAIx_DeInit() != AUDIO_OK)
bcostm	0:d83f1c8ca282	897	{
bcostm	0:d83f1c8ca282	898	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	899	}
bcostm	0:d83f1c8ca282	900
bcostm	0:d83f1c8ca282	901	/* DeInit audio codec */
bcostm	0:d83f1c8ca282	902	hAudioIn.AudioDrv->DeInit();
bcostm	0:d83f1c8ca282	903	}
bcostm	0:d83f1c8ca282	904	}
bcostm	0:d83f1c8ca282	905
bcostm	0:d83f1c8ca282	906	/* Disable SAI PLL if no more device is used */
bcostm	0:d83f1c8ca282	907	if (hAudioOut.OutputDevice == 0)
bcostm	0:d83f1c8ca282	908	{
bcostm	0:d83f1c8ca282	909	if (AUDIO_SAIx_PLL_DISABLE() != AUDIO_OK)
bcostm	0:d83f1c8ca282	910	{
bcostm	0:d83f1c8ca282	911	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	912	}
bcostm	0:d83f1c8ca282	913	}
bcostm	0:d83f1c8ca282	914
bcostm	0:d83f1c8ca282	915	/* Reset the audio input context */
bcostm	0:d83f1c8ca282	916	memset(&hAudioIn, 0, sizeof(hAudioIn));
bcostm	0:d83f1c8ca282	917
bcostm	0:d83f1c8ca282	918	return AUDIO_OK;
bcostm	0:d83f1c8ca282	919	}
bcostm	0:d83f1c8ca282	920
bcostm	0:d83f1c8ca282	921	/**
bcostm	0:d83f1c8ca282	922	* @brief Starts audio recording.
bcostm	0:d83f1c8ca282	923	* @param pbuf: Main buffer pointer for the recorded data storing
bcostm	0:d83f1c8ca282	924	* @param size: Current size of the recorded buffer
bcostm	0:d83f1c8ca282	925	* @note The Right channel is start at first with synchro on start of Left channel
bcostm	0:d83f1c8ca282	926	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	927	*/
bcostm	0:d83f1c8ca282	928	uint8_t BSP_AUDIO_IN_Record(uint16_t *pbuf, uint32_t size)
bcostm	0:d83f1c8ca282	929	{
bcostm	0:d83f1c8ca282	930	hAudioIn.pRecBuf = pbuf;
bcostm	0:d83f1c8ca282	931	hAudioIn.RecSize = size;
bcostm	0:d83f1c8ca282	932
bcostm	0:d83f1c8ca282	933
bcostm	0:d83f1c8ca282	934	if (hAudioIn.InputDevice != INPUT_DEVICE_ANALOG_MIC)
bcostm	0:d83f1c8ca282	935	{
bcostm	0:d83f1c8ca282	936	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	937	{
bcostm	0:d83f1c8ca282	938	/* Allocate hAudioIn.LeftRecBuff buffer */
bcostm	0:d83f1c8ca282	939	#if defined(BSP_AUDIO_USE_RTOS)
bcostm	0:d83f1c8ca282	940	hAudioIn.LeftRecBuff = (int32_t )k_malloc((size / hAudioIn.ChannelNbr) sizeof(int32_t));
bcostm	0:d83f1c8ca282	941	#else
bcostm	0:d83f1c8ca282	942	hAudioIn.LeftRecBuff = (int32_t )malloc((size / hAudioIn.ChannelNbr) sizeof(int32_t));
bcostm	0:d83f1c8ca282	943	#endif
bcostm	0:d83f1c8ca282	944	if (hAudioIn.LeftRecBuff == NULL)
bcostm	0:d83f1c8ca282	945	{
bcostm	0:d83f1c8ca282	946	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	947	}
bcostm	0:d83f1c8ca282	948	}
bcostm	0:d83f1c8ca282	949
bcostm	0:d83f1c8ca282	950	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	951	{
bcostm	0:d83f1c8ca282	952	/* Allocate hAudioIn.RightRecBuff buffer */
bcostm	0:d83f1c8ca282	953	#if defined(BSP_AUDIO_USE_RTOS)
bcostm	0:d83f1c8ca282	954	hAudioIn.RightRecBuff = (int32_t )k_malloc((size / hAudioIn.ChannelNbr) sizeof(int32_t));
bcostm	0:d83f1c8ca282	955	#else
bcostm	0:d83f1c8ca282	956	hAudioIn.RightRecBuff = (int32_t )malloc((size / hAudioIn.ChannelNbr) sizeof(int32_t));
bcostm	0:d83f1c8ca282	957	#endif
bcostm	0:d83f1c8ca282	958	if (hAudioIn.RightRecBuff == NULL)
bcostm	0:d83f1c8ca282	959	{
bcostm	0:d83f1c8ca282	960	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	961	}
bcostm	0:d83f1c8ca282	962	}
bcostm	0:d83f1c8ca282	963
bcostm	0:d83f1c8ca282	964	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	965	{
bcostm	0:d83f1c8ca282	966	/* Call the Media layer start function for right channel */
bcostm	0:d83f1c8ca282	967	if (HAL_DFSDM_FilterRegularStart_DMA(&BSP_AUDIO_hDfsdmRightFilter,
bcostm	0:d83f1c8ca282	968	(int32_t *)hAudioIn.RightRecBuff,
bcostm	0:d83f1c8ca282	969	(hAudioIn.RecSize / hAudioIn.ChannelNbr)) != HAL_OK)
bcostm	0:d83f1c8ca282	970	{
bcostm	0:d83f1c8ca282	971	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	972	}
bcostm	0:d83f1c8ca282	973	}
bcostm	0:d83f1c8ca282	974
bcostm	0:d83f1c8ca282	975	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	976	{
bcostm	0:d83f1c8ca282	977	/* Call the Media layer start function for left channel */
bcostm	0:d83f1c8ca282	978	if (HAL_DFSDM_FilterRegularStart_DMA(&BSP_AUDIO_hDfsdmLeftFilter,
bcostm	0:d83f1c8ca282	979	(int32_t *)hAudioIn.LeftRecBuff,
bcostm	0:d83f1c8ca282	980	(hAudioIn.RecSize / hAudioIn.ChannelNbr)) != HAL_OK)
bcostm	0:d83f1c8ca282	981	{
bcostm	0:d83f1c8ca282	982	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	983	}
bcostm	0:d83f1c8ca282	984	}
bcostm	0:d83f1c8ca282	985	}
bcostm	0:d83f1c8ca282	986	else
bcostm	0:d83f1c8ca282	987	{
bcostm	0:d83f1c8ca282	988	/* INPUT_DEVICE_ANALOG_MIC */
bcostm	0:d83f1c8ca282	989	/* Call the audio Codec Play function */
bcostm	0:d83f1c8ca282	990	if (hAudioIn.AudioDrv->Play(AUDIO_I2C_ADDRESS, pbuf, size) != 0)
bcostm	0:d83f1c8ca282	991	{
bcostm	0:d83f1c8ca282	992	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	993	}
bcostm	0:d83f1c8ca282	994
bcostm	0:d83f1c8ca282	995	/* Start the process receive DMA */
bcostm	0:d83f1c8ca282	996	if (HAL_OK != HAL_SAI_Receive_DMA(&BSP_AUDIO_hSai_Rx, (uint8_t *)pbuf, size))
bcostm	0:d83f1c8ca282	997	{
bcostm	0:d83f1c8ca282	998	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	999	}
bcostm	0:d83f1c8ca282	1000	}
bcostm	0:d83f1c8ca282	1001
bcostm	0:d83f1c8ca282	1002	return AUDIO_OK;
bcostm	0:d83f1c8ca282	1003	}
bcostm	0:d83f1c8ca282	1004
bcostm	0:d83f1c8ca282	1005	/**
bcostm	0:d83f1c8ca282	1006	* @brief Updates the audio frequency.
bcostm	0:d83f1c8ca282	1007	* @param AudioFreq: Audio frequency used to record the audio stream.
bcostm	0:d83f1c8ca282	1008	* @note This API should be called after the BSP_AUDIO_IN_Init() to adjust the
bcostm	0:d83f1c8ca282	1009	* audio frequency.
bcostm	0:d83f1c8ca282	1010	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	1011	*/
bcostm	0:d83f1c8ca282	1012	uint8_t BSP_AUDIO_IN_SetFrequency(uint32_t AudioFreq)
bcostm	0:d83f1c8ca282	1013	{
bcostm	0:d83f1c8ca282	1014	uint8_t TxData[2] = {0x00, 0x00};
bcostm	0:d83f1c8ca282	1015
bcostm	0:d83f1c8ca282	1016	/* Configure the SAI PLL according to the requested audio frequency */
bcostm	0:d83f1c8ca282	1017	if (AUDIO_SAIPLLConfig(AudioFreq) != AUDIO_OK)
bcostm	0:d83f1c8ca282	1018	{
bcostm	0:d83f1c8ca282	1019	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1020	}
bcostm	0:d83f1c8ca282	1021
bcostm	0:d83f1c8ca282	1022	if (hAudioIn.InputDevice != INPUT_DEVICE_ANALOG_MIC)
bcostm	0:d83f1c8ca282	1023	{
bcostm	0:d83f1c8ca282	1024	/* De-initializes the Digital Filter for Sigma-Delta Modulators interface */
bcostm	0:d83f1c8ca282	1025	if (AUDIO_DFSDMx_DeInit() != AUDIO_OK)
bcostm	0:d83f1c8ca282	1026	{
bcostm	0:d83f1c8ca282	1027	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1028	}
bcostm	0:d83f1c8ca282	1029
bcostm	0:d83f1c8ca282	1030	/* Initializes the Digital Filter for Sigma-Delta Modulators interface */
bcostm	0:d83f1c8ca282	1031	if (AUDIO_DFSDMx_Init(AudioFreq) != AUDIO_OK)
bcostm	0:d83f1c8ca282	1032	{
bcostm	0:d83f1c8ca282	1033	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1034	}
bcostm	0:d83f1c8ca282	1035	}
bcostm	0:d83f1c8ca282	1036	else
bcostm	0:d83f1c8ca282	1037	{
bcostm	0:d83f1c8ca282	1038	/* INPUT_DEVICE_ANALOG_MIC */
bcostm	0:d83f1c8ca282	1039	/* Disable SAI peripheral to allow access to SAI internal registers */
bcostm	0:d83f1c8ca282	1040	__HAL_SAI_DISABLE(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	1041	__HAL_SAI_DISABLE(&BSP_AUDIO_hSai_Rx);
bcostm	0:d83f1c8ca282	1042
bcostm	0:d83f1c8ca282	1043	/* Update the SAI audio frequency configuration */
bcostm	0:d83f1c8ca282	1044	BSP_AUDIO_hSai_Tx.Init.Mckdiv = SAIClockDivider(AudioFreq);
bcostm	0:d83f1c8ca282	1045	HAL_SAI_Init(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	1046	BSP_AUDIO_hSai_Rx.Init.Mckdiv = SAIClockDivider(AudioFreq);
bcostm	0:d83f1c8ca282	1047	HAL_SAI_Init(&BSP_AUDIO_hSai_Rx);
bcostm	0:d83f1c8ca282	1048
bcostm	0:d83f1c8ca282	1049	/* Enable SAI peripheral to generate MCLK */
bcostm	0:d83f1c8ca282	1050	__HAL_SAI_ENABLE(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	1051	/* Transmit one byte to start FS generation */
bcostm	0:d83f1c8ca282	1052	if (HAL_SAI_Transmit(&BSP_AUDIO_hSai_Tx, TxData, 2, 1000) != HAL_OK)
bcostm	0:d83f1c8ca282	1053	{
bcostm	0:d83f1c8ca282	1054	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1055	}
bcostm	0:d83f1c8ca282	1056	}
bcostm	0:d83f1c8ca282	1057
bcostm	0:d83f1c8ca282	1058	hAudioIn.Frequency = AudioFreq;
bcostm	0:d83f1c8ca282	1059
bcostm	0:d83f1c8ca282	1060	return AUDIO_OK;
bcostm	0:d83f1c8ca282	1061	}
bcostm	0:d83f1c8ca282	1062
bcostm	0:d83f1c8ca282	1063	/**
bcostm	0:d83f1c8ca282	1064	* @brief Regular conversion complete callback.
bcostm	0:d83f1c8ca282	1065	* @note In interrupt mode, user has to read conversion value in this function
bcostm	0:d83f1c8ca282	1066	using HAL_DFSDM_FilterGetRegularValue.
bcostm	0:d83f1c8ca282	1067	* @param hdfsdm_filter : DFSDM filter handle.
bcostm	0:d83f1c8ca282	1068	* @retval None
bcostm	0:d83f1c8ca282	1069	*/
bcostm	0:d83f1c8ca282	1070	void HAL_DFSDM_FilterRegConvCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
bcostm	0:d83f1c8ca282	1071	{
bcostm	0:d83f1c8ca282	1072	uint32_t index;
bcostm	0:d83f1c8ca282	1073	uint32_t recbufsize = (hAudioIn.RecSize / hAudioIn.ChannelNbr);
bcostm	0:d83f1c8ca282	1074
bcostm	0:d83f1c8ca282	1075	if (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC)
bcostm	0:d83f1c8ca282	1076	{
bcostm	0:d83f1c8ca282	1077	for (index = (recbufsize / 2); index < recbufsize; index++)
bcostm	0:d83f1c8ca282	1078	{
bcostm	0:d83f1c8ca282	1079	hAudioIn.pRecBuf[2 * index] = (uint16_t)(SaturaLH((hAudioIn.LeftRecBuff[index] >> 8), -32768, 32767));
bcostm	0:d83f1c8ca282	1080	hAudioIn.pRecBuf[(2 * index) + 1] = (uint16_t)(SaturaLH((hAudioIn.RightRecBuff[index] >> 8), -32768, 32767));
bcostm	0:d83f1c8ca282	1081	}
bcostm	0:d83f1c8ca282	1082	}
bcostm	0:d83f1c8ca282	1083	else if (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	1084	{
bcostm	0:d83f1c8ca282	1085	for (index = (recbufsize / 2); index < recbufsize; index++)
bcostm	0:d83f1c8ca282	1086	{
bcostm	0:d83f1c8ca282	1087	hAudioIn.pRecBuf[index] = (uint16_t)(SaturaLH((hAudioIn.LeftRecBuff[index] >> 8), -32768, 32767));
bcostm	0:d83f1c8ca282	1088	}
bcostm	0:d83f1c8ca282	1089	}
bcostm	0:d83f1c8ca282	1090	else if (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1091	{
bcostm	0:d83f1c8ca282	1092	for (index = (recbufsize / 2); index < recbufsize; index++)
bcostm	0:d83f1c8ca282	1093	{
bcostm	0:d83f1c8ca282	1094	hAudioIn.pRecBuf[index] = (uint16_t)(SaturaLH((hAudioIn.RightRecBuff[index] >> 8), -32768, 32767));
bcostm	0:d83f1c8ca282	1095	}
bcostm	0:d83f1c8ca282	1096	}
bcostm	0:d83f1c8ca282	1097
bcostm	0:d83f1c8ca282	1098	/* Invoke the registered 'TransferCompete' callback function (if any) */
bcostm	0:d83f1c8ca282	1099	if (hAudioIn.CbTransferComplete != (Audio_CallbackTypeDef)NULL)
bcostm	0:d83f1c8ca282	1100	{
bcostm	0:d83f1c8ca282	1101	if (hdfsdm_filter == &BSP_AUDIO_hDfsdmLeftFilter)
bcostm	0:d83f1c8ca282	1102	{
bcostm	0:d83f1c8ca282	1103	if (DmaLeftRecBuffCplt)
bcostm	0:d83f1c8ca282	1104	{
bcostm	0:d83f1c8ca282	1105	BSP_ErrorHandler();
bcostm	0:d83f1c8ca282	1106	}
bcostm	0:d83f1c8ca282	1107
bcostm	0:d83f1c8ca282	1108	DmaLeftRecBuffCplt = 1;
bcostm	0:d83f1c8ca282	1109	}
bcostm	0:d83f1c8ca282	1110	else
bcostm	0:d83f1c8ca282	1111	{
bcostm	0:d83f1c8ca282	1112	if (DmaRightRecBuffCplt)
bcostm	0:d83f1c8ca282	1113	{
bcostm	0:d83f1c8ca282	1114	BSP_ErrorHandler();
bcostm	0:d83f1c8ca282	1115	}
bcostm	0:d83f1c8ca282	1116
bcostm	0:d83f1c8ca282	1117	DmaRightRecBuffCplt = 1;
bcostm	0:d83f1c8ca282	1118	}
bcostm	0:d83f1c8ca282	1119
bcostm	0:d83f1c8ca282	1120	if (((DmaLeftRecBuffCplt != 0) && (DmaRightRecBuffCplt != 0) && (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC)) \|\|
bcostm	0:d83f1c8ca282	1121	((DmaLeftRecBuffCplt != 0) && (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC1)) \|\|
bcostm	0:d83f1c8ca282	1122	((DmaRightRecBuffCplt != 0) && (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC2)))
bcostm	0:d83f1c8ca282	1123	{
bcostm	0:d83f1c8ca282	1124	hAudioIn.CbTransferComplete();
bcostm	0:d83f1c8ca282	1125	DmaLeftRecBuffCplt = 0;
bcostm	0:d83f1c8ca282	1126	DmaRightRecBuffCplt = 0;
bcostm	0:d83f1c8ca282	1127	}
bcostm	0:d83f1c8ca282	1128	}
bcostm	0:d83f1c8ca282	1129	}
bcostm	0:d83f1c8ca282	1130
bcostm	0:d83f1c8ca282	1131	/**
bcostm	0:d83f1c8ca282	1132	* @brief Half regular conversion complete callback.
bcostm	0:d83f1c8ca282	1133	* @param hdfsdm_filter : DFSDM filter handle.
bcostm	0:d83f1c8ca282	1134	* @retval None
bcostm	0:d83f1c8ca282	1135	*/
bcostm	0:d83f1c8ca282	1136	void HAL_DFSDM_FilterRegConvHalfCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
bcostm	0:d83f1c8ca282	1137	{
bcostm	0:d83f1c8ca282	1138	uint32_t index;
bcostm	0:d83f1c8ca282	1139	uint32_t recbufsize = (hAudioIn.RecSize / hAudioIn.ChannelNbr);
bcostm	0:d83f1c8ca282	1140
bcostm	0:d83f1c8ca282	1141	if (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC)
bcostm	0:d83f1c8ca282	1142	{
bcostm	0:d83f1c8ca282	1143	for (index = 0; index < (recbufsize / 2); index++)
bcostm	0:d83f1c8ca282	1144	{
bcostm	0:d83f1c8ca282	1145	hAudioIn.pRecBuf[2 * index] = (uint16_t)(SaturaLH((hAudioIn.LeftRecBuff[index] >> 8), -32768, 32767));
bcostm	0:d83f1c8ca282	1146	hAudioIn.pRecBuf[(2 * index) + 1] = (uint16_t)(SaturaLH((hAudioIn.RightRecBuff[index] >> 8), -32768, 32767));
bcostm	0:d83f1c8ca282	1147	}
bcostm	0:d83f1c8ca282	1148	}
bcostm	0:d83f1c8ca282	1149	else if (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	1150	{
bcostm	0:d83f1c8ca282	1151	for (index = 0; index < (recbufsize / 2); index++)
bcostm	0:d83f1c8ca282	1152	{
bcostm	0:d83f1c8ca282	1153	hAudioIn.pRecBuf[index] = (uint16_t)(SaturaLH((hAudioIn.LeftRecBuff[index] >> 8), -32768, 32767));
bcostm	0:d83f1c8ca282	1154	}
bcostm	0:d83f1c8ca282	1155	}
bcostm	0:d83f1c8ca282	1156	else if (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1157	{
bcostm	0:d83f1c8ca282	1158	for (index = 0; index < (recbufsize / 2); index++)
bcostm	0:d83f1c8ca282	1159	{
bcostm	0:d83f1c8ca282	1160	hAudioIn.pRecBuf[index] = (uint16_t)(SaturaLH((hAudioIn.RightRecBuff[index] >> 8), -32768, 32767));
bcostm	0:d83f1c8ca282	1161	}
bcostm	0:d83f1c8ca282	1162	}
bcostm	0:d83f1c8ca282	1163
bcostm	0:d83f1c8ca282	1164	/* Invoke the registered 'HalfTransfer' callback function (if any) */
bcostm	0:d83f1c8ca282	1165	if (hAudioIn.CbHalfTransfer != (Audio_CallbackTypeDef)NULL)
bcostm	0:d83f1c8ca282	1166	{
bcostm	0:d83f1c8ca282	1167	if (hdfsdm_filter == &BSP_AUDIO_hDfsdmLeftFilter)
bcostm	0:d83f1c8ca282	1168	{
bcostm	0:d83f1c8ca282	1169	if (DmaLeftRecHalfBuffCplt)
bcostm	0:d83f1c8ca282	1170	{
bcostm	0:d83f1c8ca282	1171	BSP_ErrorHandler();
bcostm	0:d83f1c8ca282	1172	}
bcostm	0:d83f1c8ca282	1173
bcostm	0:d83f1c8ca282	1174	DmaLeftRecHalfBuffCplt = 1;
bcostm	0:d83f1c8ca282	1175	}
bcostm	0:d83f1c8ca282	1176	else
bcostm	0:d83f1c8ca282	1177	{
bcostm	0:d83f1c8ca282	1178	if (DmaRightRecHalfBuffCplt)
bcostm	0:d83f1c8ca282	1179	{
bcostm	0:d83f1c8ca282	1180	BSP_ErrorHandler();
bcostm	0:d83f1c8ca282	1181	}
bcostm	0:d83f1c8ca282	1182
bcostm	0:d83f1c8ca282	1183	DmaRightRecHalfBuffCplt = 1;
bcostm	0:d83f1c8ca282	1184	}
bcostm	0:d83f1c8ca282	1185
bcostm	0:d83f1c8ca282	1186	if (((DmaLeftRecHalfBuffCplt != 0) && (DmaRightRecHalfBuffCplt != 0) && (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC)) \|\|
bcostm	0:d83f1c8ca282	1187	((DmaLeftRecHalfBuffCplt != 0) && (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC1)) \|\|
bcostm	0:d83f1c8ca282	1188	((DmaRightRecHalfBuffCplt != 0) && (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC2)))
bcostm	0:d83f1c8ca282	1189	{
bcostm	0:d83f1c8ca282	1190	hAudioIn.CbHalfTransfer();
bcostm	0:d83f1c8ca282	1191	DmaLeftRecHalfBuffCplt = 0;
bcostm	0:d83f1c8ca282	1192	DmaRightRecHalfBuffCplt = 0;
bcostm	0:d83f1c8ca282	1193	}
bcostm	0:d83f1c8ca282	1194	}
bcostm	0:d83f1c8ca282	1195	}
bcostm	0:d83f1c8ca282	1196
bcostm	0:d83f1c8ca282	1197	/**
bcostm	0:d83f1c8ca282	1198	* @brief Error callback.
bcostm	0:d83f1c8ca282	1199	* @param hdfsdm_filter : DFSDM filter handle.
bcostm	0:d83f1c8ca282	1200	* @retval None
bcostm	0:d83f1c8ca282	1201	*/
bcostm	0:d83f1c8ca282	1202	void HAL_DFSDM_FilterErrorCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
bcostm	0:d83f1c8ca282	1203	{
bcostm	0:d83f1c8ca282	1204	/* Invoke the registered 'ErrorCallback' callback function (if any) */
bcostm	0:d83f1c8ca282	1205	if (hAudioIn.CbError != (Audio_CallbackTypeDef)NULL)
bcostm	0:d83f1c8ca282	1206	{
bcostm	0:d83f1c8ca282	1207	hAudioIn.CbError();
bcostm	0:d83f1c8ca282	1208	}
bcostm	0:d83f1c8ca282	1209	}
bcostm	0:d83f1c8ca282	1210
bcostm	0:d83f1c8ca282	1211	/**
bcostm	0:d83f1c8ca282	1212	* @brief SAI Rx Transfer completed callbacks.
bcostm	0:d83f1c8ca282	1213	* @param hsai: SAI handle
bcostm	0:d83f1c8ca282	1214	* @retval None
bcostm	0:d83f1c8ca282	1215	*/
bcostm	0:d83f1c8ca282	1216	void HAL_SAI_RxCpltCallback(SAI_HandleTypeDef *hsai)
bcostm	0:d83f1c8ca282	1217	{
bcostm	0:d83f1c8ca282	1218	/* Invoke the registered 'TransferComplete' function (if any) */
bcostm	0:d83f1c8ca282	1219	if (hAudioIn.CbTransferComplete != (Audio_CallbackTypeDef)NULL)
bcostm	0:d83f1c8ca282	1220	{
bcostm	0:d83f1c8ca282	1221	hAudioIn.CbTransferComplete();
bcostm	0:d83f1c8ca282	1222	}
bcostm	0:d83f1c8ca282	1223	}
bcostm	0:d83f1c8ca282	1224
bcostm	0:d83f1c8ca282	1225	/**
bcostm	0:d83f1c8ca282	1226	* @brief SAI Rx Half Transfer completed callbacks.
bcostm	0:d83f1c8ca282	1227	* @param hsai: SAI handle
bcostm	0:d83f1c8ca282	1228	* @retval None
bcostm	0:d83f1c8ca282	1229	*/
bcostm	0:d83f1c8ca282	1230	void HAL_SAI_RxHalfCpltCallback(SAI_HandleTypeDef *hsai)
bcostm	0:d83f1c8ca282	1231	{
bcostm	0:d83f1c8ca282	1232	/* Invoke the registered 'HalfTransfer' callback function (if any) */
bcostm	0:d83f1c8ca282	1233	if (hAudioIn.CbHalfTransfer != (Audio_CallbackTypeDef)NULL)
bcostm	0:d83f1c8ca282	1234	{
bcostm	0:d83f1c8ca282	1235	hAudioIn.CbHalfTransfer();
bcostm	0:d83f1c8ca282	1236	}
bcostm	0:d83f1c8ca282	1237	}
bcostm	0:d83f1c8ca282	1238
bcostm	0:d83f1c8ca282	1239	/**
bcostm	0:d83f1c8ca282	1240	* @brief Stops audio recording.
bcostm	0:d83f1c8ca282	1241	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	1242	*/
bcostm	0:d83f1c8ca282	1243	uint8_t BSP_AUDIO_IN_Stop(void)
bcostm	0:d83f1c8ca282	1244	{
bcostm	0:d83f1c8ca282	1245	if (hAudioIn.InputDevice != INPUT_DEVICE_ANALOG_MIC)
bcostm	0:d83f1c8ca282	1246	{
bcostm	0:d83f1c8ca282	1247	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1248	{
bcostm	0:d83f1c8ca282	1249	/* Call the Media layer stop function for right channel */
bcostm	0:d83f1c8ca282	1250	if (HAL_DFSDM_FilterRegularStop_DMA(&BSP_AUDIO_hDfsdmRightFilter) != HAL_OK)
bcostm	0:d83f1c8ca282	1251	{
bcostm	0:d83f1c8ca282	1252	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1253	}
bcostm	0:d83f1c8ca282	1254	}
bcostm	0:d83f1c8ca282	1255	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	1256	{
bcostm	0:d83f1c8ca282	1257	/* Call the Media layer stop function for left channel */
bcostm	0:d83f1c8ca282	1258	if (HAL_DFSDM_FilterRegularStop_DMA(&BSP_AUDIO_hDfsdmLeftFilter) != HAL_OK)
bcostm	0:d83f1c8ca282	1259	{
bcostm	0:d83f1c8ca282	1260	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1261	}
bcostm	0:d83f1c8ca282	1262	}
bcostm	0:d83f1c8ca282	1263
bcostm	0:d83f1c8ca282	1264	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	1265	{
bcostm	0:d83f1c8ca282	1266	/* Free hAudioIn.LeftRecBuff buffer */
bcostm	0:d83f1c8ca282	1267	#if defined(BSP_AUDIO_USE_RTOS)
bcostm	0:d83f1c8ca282	1268	k_free((void *)hAudioIn.LeftRecBuff);
bcostm	0:d83f1c8ca282	1269	#else
bcostm	0:d83f1c8ca282	1270	free((void *)hAudioIn.LeftRecBuff);
bcostm	0:d83f1c8ca282	1271	#endif
bcostm	0:d83f1c8ca282	1272	}
bcostm	0:d83f1c8ca282	1273	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1274	{
bcostm	0:d83f1c8ca282	1275	/* Free hAudioIn.RightRecBuff buffer */
bcostm	0:d83f1c8ca282	1276	#if defined(BSP_AUDIO_USE_RTOS)
bcostm	0:d83f1c8ca282	1277	k_free((void *)hAudioIn.RightRecBuff);
bcostm	0:d83f1c8ca282	1278	#else
bcostm	0:d83f1c8ca282	1279	free((void *)hAudioIn.RightRecBuff);
bcostm	0:d83f1c8ca282	1280	#endif
bcostm	0:d83f1c8ca282	1281	}
bcostm	0:d83f1c8ca282	1282	}
bcostm	0:d83f1c8ca282	1283	else
bcostm	0:d83f1c8ca282	1284	{
bcostm	0:d83f1c8ca282	1285	/* INPUT_DEVICE_ANALOG_MIC */
bcostm	0:d83f1c8ca282	1286	/* Call Audio Codec Stop function */
bcostm	0:d83f1c8ca282	1287	if (hAudioIn.AudioDrv->Stop(AUDIO_I2C_ADDRESS, CODEC_PDWN_HW) != 0)
bcostm	0:d83f1c8ca282	1288	{
bcostm	0:d83f1c8ca282	1289	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1290	}
bcostm	0:d83f1c8ca282	1291
bcostm	0:d83f1c8ca282	1292	/* Wait at least 100ms */
bcostm	0:d83f1c8ca282	1293	HAL_Delay(100);
bcostm	0:d83f1c8ca282	1294
bcostm	0:d83f1c8ca282	1295	/* Stop DMA transfer of PCM samples towards the serial audio interface */
bcostm	0:d83f1c8ca282	1296	if (HAL_SAI_DMAStop(&BSP_AUDIO_hSai_Rx) != HAL_OK)
bcostm	0:d83f1c8ca282	1297	{
bcostm	0:d83f1c8ca282	1298	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1299	}
bcostm	0:d83f1c8ca282	1300	}
bcostm	0:d83f1c8ca282	1301
bcostm	0:d83f1c8ca282	1302	return AUDIO_OK;
bcostm	0:d83f1c8ca282	1303	}
bcostm	0:d83f1c8ca282	1304
bcostm	0:d83f1c8ca282	1305	/**
bcostm	0:d83f1c8ca282	1306	* @brief Pauses the audio file stream.
bcostm	0:d83f1c8ca282	1307	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	1308	*/
bcostm	0:d83f1c8ca282	1309	uint8_t BSP_AUDIO_IN_Pause(void)
bcostm	0:d83f1c8ca282	1310	{
bcostm	0:d83f1c8ca282	1311	if (hAudioIn.InputDevice != INPUT_DEVICE_ANALOG_MIC)
bcostm	0:d83f1c8ca282	1312	{
bcostm	0:d83f1c8ca282	1313	/* Call the Media layer stop function */
bcostm	0:d83f1c8ca282	1314	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1315	{
bcostm	0:d83f1c8ca282	1316	if (HAL_DFSDM_FilterRegularStop_DMA(&BSP_AUDIO_hDfsdmRightFilter) != HAL_OK)
bcostm	0:d83f1c8ca282	1317	{
bcostm	0:d83f1c8ca282	1318	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1319	}
bcostm	0:d83f1c8ca282	1320	}
bcostm	0:d83f1c8ca282	1321
bcostm	0:d83f1c8ca282	1322	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	1323	{
bcostm	0:d83f1c8ca282	1324	if (HAL_DFSDM_FilterRegularStop_DMA(&BSP_AUDIO_hDfsdmLeftFilter) != HAL_OK)
bcostm	0:d83f1c8ca282	1325	{
bcostm	0:d83f1c8ca282	1326	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1327	}
bcostm	0:d83f1c8ca282	1328	}
bcostm	0:d83f1c8ca282	1329	}
bcostm	0:d83f1c8ca282	1330	else
bcostm	0:d83f1c8ca282	1331	{
bcostm	0:d83f1c8ca282	1332	/* INPUT_DEVICE_ANALOG_MIC */
bcostm	0:d83f1c8ca282	1333	/* Pause DMA transfer of PCM samples towards the serial audio interface */
bcostm	0:d83f1c8ca282	1334	if (HAL_SAI_DMAPause(&BSP_AUDIO_hSai_Rx) != HAL_OK)
bcostm	0:d83f1c8ca282	1335	{
bcostm	0:d83f1c8ca282	1336	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1337	}
bcostm	0:d83f1c8ca282	1338	}
bcostm	0:d83f1c8ca282	1339
bcostm	0:d83f1c8ca282	1340	return AUDIO_OK;
bcostm	0:d83f1c8ca282	1341	}
bcostm	0:d83f1c8ca282	1342
bcostm	0:d83f1c8ca282	1343	/**
bcostm	0:d83f1c8ca282	1344	* @brief Resumes the audio file stream.
bcostm	0:d83f1c8ca282	1345	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	1346	*/
bcostm	0:d83f1c8ca282	1347	uint8_t BSP_AUDIO_IN_Resume(void)
bcostm	0:d83f1c8ca282	1348	{
bcostm	0:d83f1c8ca282	1349	if (hAudioIn.InputDevice != INPUT_DEVICE_ANALOG_MIC)
bcostm	0:d83f1c8ca282	1350	{
bcostm	0:d83f1c8ca282	1351	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1352	{
bcostm	0:d83f1c8ca282	1353	/* Call the Media layer start function for right channel */
bcostm	0:d83f1c8ca282	1354	if (HAL_DFSDM_FilterRegularStart_DMA(&BSP_AUDIO_hDfsdmRightFilter,
bcostm	0:d83f1c8ca282	1355	(int32_t *)hAudioIn.RightRecBuff,
bcostm	0:d83f1c8ca282	1356	(hAudioIn.RecSize / hAudioIn.ChannelNbr)) != HAL_OK)
bcostm	0:d83f1c8ca282	1357	{
bcostm	0:d83f1c8ca282	1358	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1359	}
bcostm	0:d83f1c8ca282	1360	}
bcostm	0:d83f1c8ca282	1361
bcostm	0:d83f1c8ca282	1362	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	1363	{
bcostm	0:d83f1c8ca282	1364	/* Call the Media layer start function for left channel */
bcostm	0:d83f1c8ca282	1365	if (HAL_DFSDM_FilterRegularStart_DMA(&BSP_AUDIO_hDfsdmLeftFilter,
bcostm	0:d83f1c8ca282	1366	(int32_t *)hAudioIn.LeftRecBuff,
bcostm	0:d83f1c8ca282	1367	(hAudioIn.RecSize / hAudioIn.ChannelNbr)) != HAL_OK)
bcostm	0:d83f1c8ca282	1368	{
bcostm	0:d83f1c8ca282	1369	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1370	}
bcostm	0:d83f1c8ca282	1371	}
bcostm	0:d83f1c8ca282	1372	}
bcostm	0:d83f1c8ca282	1373	else
bcostm	0:d83f1c8ca282	1374	{
bcostm	0:d83f1c8ca282	1375	/* INPUT_DEVICE_ANALOG_MIC */
bcostm	0:d83f1c8ca282	1376	/* Resume DMA transfer of PCM samples towards the serial audio interface */
bcostm	0:d83f1c8ca282	1377	if (HAL_SAI_DMAResume(&BSP_AUDIO_hSai_Rx) != HAL_OK)
bcostm	0:d83f1c8ca282	1378	{
bcostm	0:d83f1c8ca282	1379	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1380	}
bcostm	0:d83f1c8ca282	1381	}
bcostm	0:d83f1c8ca282	1382
bcostm	0:d83f1c8ca282	1383	return AUDIO_OK;
bcostm	0:d83f1c8ca282	1384	}
bcostm	0:d83f1c8ca282	1385
bcostm	0:d83f1c8ca282	1386	/**
bcostm	0:d83f1c8ca282	1387	* @brief register user callback functions
bcostm	0:d83f1c8ca282	1388	* @param ErrorCallback: pointer to the error callback function
bcostm	0:d83f1c8ca282	1389	* @param HalfTransferCallback: pointer to the half transfer callback function
bcostm	0:d83f1c8ca282	1390	* @param TransferCompleteCallback: pointer to the transfer complete callback function
bcostm	0:d83f1c8ca282	1391	* @retval None
bcostm	0:d83f1c8ca282	1392	*/
bcostm	0:d83f1c8ca282	1393	void BSP_AUDIO_IN_RegisterCallbacks(Audio_CallbackTypeDef ErrorCallback,
bcostm	0:d83f1c8ca282	1394	Audio_CallbackTypeDef HalfTransferCallback,
bcostm	0:d83f1c8ca282	1395	Audio_CallbackTypeDef TransferCompleteCallback)
bcostm	0:d83f1c8ca282	1396	{
bcostm	0:d83f1c8ca282	1397	hAudioIn.CbError = ErrorCallback;
bcostm	0:d83f1c8ca282	1398	hAudioIn.CbHalfTransfer = HalfTransferCallback;
bcostm	0:d83f1c8ca282	1399	hAudioIn.CbTransferComplete = TransferCompleteCallback;
bcostm	0:d83f1c8ca282	1400	}
bcostm	0:d83f1c8ca282	1401	/**
bcostm	0:d83f1c8ca282	1402	* @}
bcostm	0:d83f1c8ca282	1403	*/
bcostm	0:d83f1c8ca282	1404
bcostm	0:d83f1c8ca282	1405	/* private functions --------------------------------------------------------*/
bcostm	0:d83f1c8ca282	1406	/** @addtogroup STM32L496G_DISCOVERY_AUDIO_Private_Functions
bcostm	0:d83f1c8ca282	1407	* @{
bcostm	0:d83f1c8ca282	1408	*/
bcostm	0:d83f1c8ca282	1409	/**
bcostm	0:d83f1c8ca282	1410	* @brief Initializes the Audio Codec audio interface (SAI).
bcostm	0:d83f1c8ca282	1411	* @param AudioFreq: Audio frequency to be configured for the SAI peripheral.
bcostm	0:d83f1c8ca282	1412	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	1413	*/
bcostm	0:d83f1c8ca282	1414	static uint8_t AUDIO_SAIx_Init(uint32_t AudioFreq)
bcostm	0:d83f1c8ca282	1415	{
bcostm	0:d83f1c8ca282	1416	uint8_t TxData[2] = {0x00, 0x00};
bcostm	0:d83f1c8ca282	1417
bcostm	0:d83f1c8ca282	1418	/* Initialize the BSP_AUDIO_hSai_Xx instances parameter */
bcostm	0:d83f1c8ca282	1419	BSP_AUDIO_hSai_Tx.Instance = SAI1_Block_A;
bcostm	0:d83f1c8ca282	1420	BSP_AUDIO_hSai_Rx.Instance = SAI1_Block_B;
bcostm	0:d83f1c8ca282	1421
bcostm	0:d83f1c8ca282	1422	/* Disable SAI peripheral to allow access to SAI internal registers */
bcostm	0:d83f1c8ca282	1423	__HAL_SAI_DISABLE(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	1424	__HAL_SAI_DISABLE(&BSP_AUDIO_hSai_Rx);
bcostm	0:d83f1c8ca282	1425
bcostm	0:d83f1c8ca282	1426	/*******************************/
bcostm	0:d83f1c8ca282	1427	/* SAI block used for playback */
bcostm	0:d83f1c8ca282	1428	/*******************************/
bcostm	0:d83f1c8ca282	1429	/* Configure SAI_Block_x used for transmit
bcostm	0:d83f1c8ca282	1430	LSBFirst: Disabled
bcostm	0:d83f1c8ca282	1431	DataSize: 16 */
bcostm	0:d83f1c8ca282	1432	BSP_AUDIO_hSai_Tx.Init.AudioMode = SAI_MODEMASTER_TX;
bcostm	0:d83f1c8ca282	1433	BSP_AUDIO_hSai_Tx.Init.Synchro = SAI_ASYNCHRONOUS;
bcostm	0:d83f1c8ca282	1434	BSP_AUDIO_hSai_Tx.Init.SynchroExt = SAI_SYNCEXT_DISABLE;
bcostm	0:d83f1c8ca282	1435	BSP_AUDIO_hSai_Tx.Init.OutputDrive = SAI_OUTPUTDRIVE_ENABLE;
bcostm	0:d83f1c8ca282	1436	BSP_AUDIO_hSai_Tx.Init.NoDivider = SAI_MASTERDIVIDER_ENABLE;
bcostm	0:d83f1c8ca282	1437	BSP_AUDIO_hSai_Tx.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_1QF;
bcostm	0:d83f1c8ca282	1438	BSP_AUDIO_hSai_Tx.Init.AudioFrequency = SAI_AUDIO_FREQUENCY_MCKDIV;
bcostm	0:d83f1c8ca282	1439	BSP_AUDIO_hSai_Tx.Init.Mckdiv = SAIClockDivider(AudioFreq);
bcostm	0:d83f1c8ca282	1440	BSP_AUDIO_hSai_Tx.Init.MonoStereoMode = SAI_STEREOMODE;
bcostm	0:d83f1c8ca282	1441	BSP_AUDIO_hSai_Tx.Init.CompandingMode = SAI_NOCOMPANDING;
bcostm	0:d83f1c8ca282	1442	BSP_AUDIO_hSai_Tx.Init.TriState = SAI_OUTPUT_NOTRELEASED;
bcostm	0:d83f1c8ca282	1443	BSP_AUDIO_hSai_Tx.Init.Protocol = SAI_FREE_PROTOCOL;
bcostm	0:d83f1c8ca282	1444	BSP_AUDIO_hSai_Tx.Init.DataSize = SAI_DATASIZE_16;
bcostm	0:d83f1c8ca282	1445	BSP_AUDIO_hSai_Tx.Init.FirstBit = SAI_FIRSTBIT_MSB;
bcostm	0:d83f1c8ca282	1446	BSP_AUDIO_hSai_Tx.Init.ClockStrobing = SAI_CLOCKSTROBING_FALLINGEDGE;
bcostm	0:d83f1c8ca282	1447
bcostm	0:d83f1c8ca282	1448	/* Configure SAI_Block_x Frame
bcostm	0:d83f1c8ca282	1449	Frame Length: 32
bcostm	0:d83f1c8ca282	1450	Frame active Length: 16
bcostm	0:d83f1c8ca282	1451	FS Definition: Start frame + Channel Side identification
bcostm	0:d83f1c8ca282	1452	FS Polarity: FS active Low
bcostm	0:d83f1c8ca282	1453	FS Offset: FS asserted one bit before the first bit of slot 0 */
bcostm	0:d83f1c8ca282	1454	BSP_AUDIO_hSai_Tx.FrameInit.FrameLength = 32;
bcostm	0:d83f1c8ca282	1455	BSP_AUDIO_hSai_Tx.FrameInit.ActiveFrameLength = 16;
bcostm	0:d83f1c8ca282	1456	BSP_AUDIO_hSai_Tx.FrameInit.FSDefinition = SAI_FS_CHANNEL_IDENTIFICATION;
bcostm	0:d83f1c8ca282	1457	BSP_AUDIO_hSai_Tx.FrameInit.FSPolarity = SAI_FS_ACTIVE_LOW;
bcostm	0:d83f1c8ca282	1458	BSP_AUDIO_hSai_Tx.FrameInit.FSOffset = SAI_FS_BEFOREFIRSTBIT;
bcostm	0:d83f1c8ca282	1459
bcostm	0:d83f1c8ca282	1460	/* Configure SAI Block_x Slot
bcostm	0:d83f1c8ca282	1461	Slot First Bit Offset: 0
bcostm	0:d83f1c8ca282	1462	Slot Size : 16
bcostm	0:d83f1c8ca282	1463	Slot Number: 2
bcostm	0:d83f1c8ca282	1464	Slot Active: Slots 0 and 1 actives */
bcostm	0:d83f1c8ca282	1465	BSP_AUDIO_hSai_Tx.SlotInit.FirstBitOffset = 0;
bcostm	0:d83f1c8ca282	1466	BSP_AUDIO_hSai_Tx.SlotInit.SlotSize = SAI_SLOTSIZE_DATASIZE;
bcostm	0:d83f1c8ca282	1467	BSP_AUDIO_hSai_Tx.SlotInit.SlotNumber = 2;
bcostm	0:d83f1c8ca282	1468	BSP_AUDIO_hSai_Tx.SlotInit.SlotActive = SAI_SLOTACTIVE_0 \| SAI_SLOTACTIVE_1;
bcostm	0:d83f1c8ca282	1469
bcostm	0:d83f1c8ca282	1470	/*****************************/
bcostm	0:d83f1c8ca282	1471	/* SAI block used for record */
bcostm	0:d83f1c8ca282	1472	/*****************************/
bcostm	0:d83f1c8ca282	1473	/* Configure SAI_Block_x used for receive
bcostm	0:d83f1c8ca282	1474	LSBFirst: Disabled
bcostm	0:d83f1c8ca282	1475	DataSize: 16 */
bcostm	0:d83f1c8ca282	1476	BSP_AUDIO_hSai_Rx.Init.AudioMode = SAI_MODESLAVE_RX;
bcostm	0:d83f1c8ca282	1477	BSP_AUDIO_hSai_Rx.Init.Synchro = SAI_SYNCHRONOUS;
bcostm	0:d83f1c8ca282	1478	BSP_AUDIO_hSai_Rx.Init.SynchroExt = SAI_SYNCEXT_DISABLE;
bcostm	0:d83f1c8ca282	1479	BSP_AUDIO_hSai_Rx.Init.OutputDrive = SAI_OUTPUTDRIVE_ENABLE;
bcostm	0:d83f1c8ca282	1480	BSP_AUDIO_hSai_Rx.Init.NoDivider = SAI_MASTERDIVIDER_ENABLE;
bcostm	0:d83f1c8ca282	1481	BSP_AUDIO_hSai_Rx.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_1QF;
bcostm	0:d83f1c8ca282	1482	BSP_AUDIO_hSai_Rx.Init.AudioFrequency = SAI_AUDIO_FREQUENCY_MCKDIV;
bcostm	0:d83f1c8ca282	1483	BSP_AUDIO_hSai_Rx.Init.Mckdiv = SAIClockDivider(AudioFreq);
bcostm	0:d83f1c8ca282	1484	BSP_AUDIO_hSai_Rx.Init.MonoStereoMode = SAI_MONOMODE;
bcostm	0:d83f1c8ca282	1485	BSP_AUDIO_hSai_Rx.Init.CompandingMode = SAI_NOCOMPANDING;
bcostm	0:d83f1c8ca282	1486	BSP_AUDIO_hSai_Rx.Init.TriState = SAI_OUTPUT_NOTRELEASED;
bcostm	0:d83f1c8ca282	1487	BSP_AUDIO_hSai_Rx.Init.Protocol = SAI_FREE_PROTOCOL;
bcostm	0:d83f1c8ca282	1488	BSP_AUDIO_hSai_Rx.Init.DataSize = SAI_DATASIZE_16;
bcostm	0:d83f1c8ca282	1489	BSP_AUDIO_hSai_Rx.Init.FirstBit = SAI_FIRSTBIT_MSB;
bcostm	0:d83f1c8ca282	1490	BSP_AUDIO_hSai_Rx.Init.ClockStrobing = SAI_CLOCKSTROBING_FALLINGEDGE;
bcostm	0:d83f1c8ca282	1491
bcostm	0:d83f1c8ca282	1492	/* Configure SAI_Block_x Frame
bcostm	0:d83f1c8ca282	1493	Frame Length: 32
bcostm	0:d83f1c8ca282	1494	Frame active Length: 16
bcostm	0:d83f1c8ca282	1495	FS Definition: Start frame + Channel Side identification
bcostm	0:d83f1c8ca282	1496	FS Polarity: FS active Low
bcostm	0:d83f1c8ca282	1497	FS Offset: FS asserted one bit before the first bit of slot 0 */
bcostm	0:d83f1c8ca282	1498	BSP_AUDIO_hSai_Rx.FrameInit.FrameLength = 32;
bcostm	0:d83f1c8ca282	1499	BSP_AUDIO_hSai_Rx.FrameInit.ActiveFrameLength = 16;
bcostm	0:d83f1c8ca282	1500	BSP_AUDIO_hSai_Rx.FrameInit.FSDefinition = SAI_FS_CHANNEL_IDENTIFICATION;
bcostm	0:d83f1c8ca282	1501	BSP_AUDIO_hSai_Rx.FrameInit.FSPolarity = SAI_FS_ACTIVE_LOW;
bcostm	0:d83f1c8ca282	1502	BSP_AUDIO_hSai_Rx.FrameInit.FSOffset = SAI_FS_BEFOREFIRSTBIT;
bcostm	0:d83f1c8ca282	1503
bcostm	0:d83f1c8ca282	1504	/* Configure SAI Block_x Slot
bcostm	0:d83f1c8ca282	1505	Slot First Bit Offset: 0
bcostm	0:d83f1c8ca282	1506	Slot Size : 16
bcostm	0:d83f1c8ca282	1507	Slot Number: 2
bcostm	0:d83f1c8ca282	1508	Slot Active: Slots 0 and 1 actives */
bcostm	0:d83f1c8ca282	1509	BSP_AUDIO_hSai_Rx.SlotInit.FirstBitOffset = 0;
bcostm	0:d83f1c8ca282	1510	BSP_AUDIO_hSai_Rx.SlotInit.SlotSize = SAI_SLOTSIZE_DATASIZE;
bcostm	0:d83f1c8ca282	1511	BSP_AUDIO_hSai_Rx.SlotInit.SlotNumber = 2;
bcostm	0:d83f1c8ca282	1512	BSP_AUDIO_hSai_Rx.SlotInit.SlotActive = SAI_SLOTACTIVE_0 \| SAI_SLOTACTIVE_1;
bcostm	0:d83f1c8ca282	1513
bcostm	0:d83f1c8ca282	1514	/*********************************/
bcostm	0:d83f1c8ca282	1515	/* Initializes the SAI peripheral*/
bcostm	0:d83f1c8ca282	1516	/*********************************/
bcostm	0:d83f1c8ca282	1517	if (HAL_SAI_Init(&BSP_AUDIO_hSai_Tx) != HAL_OK)
bcostm	0:d83f1c8ca282	1518	{
bcostm	0:d83f1c8ca282	1519	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1520	}
bcostm	0:d83f1c8ca282	1521	if (HAL_SAI_Init(&BSP_AUDIO_hSai_Rx) != HAL_OK)
bcostm	0:d83f1c8ca282	1522	{
bcostm	0:d83f1c8ca282	1523	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1524	}
bcostm	0:d83f1c8ca282	1525
bcostm	0:d83f1c8ca282	1526	/******************************************/
bcostm	0:d83f1c8ca282	1527	/* Enable SAI peripheral to generate MCLK */
bcostm	0:d83f1c8ca282	1528	/******************************************/
bcostm	0:d83f1c8ca282	1529	__HAL_SAI_ENABLE(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	1530	/* Transmit one byte to start FS generation */
bcostm	0:d83f1c8ca282	1531	if (HAL_SAI_Transmit(&BSP_AUDIO_hSai_Tx, TxData, 2, 1000) != HAL_OK)
bcostm	0:d83f1c8ca282	1532	{
bcostm	0:d83f1c8ca282	1533	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1534	}
bcostm	0:d83f1c8ca282	1535
bcostm	0:d83f1c8ca282	1536	return AUDIO_OK;
bcostm	0:d83f1c8ca282	1537	}
bcostm	0:d83f1c8ca282	1538
bcostm	0:d83f1c8ca282	1539	/**
bcostm	0:d83f1c8ca282	1540	* @brief De-initializes the Audio Codec audio interface (SAI).
bcostm	0:d83f1c8ca282	1541	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	1542	*/
bcostm	0:d83f1c8ca282	1543	static uint8_t AUDIO_SAIx_DeInit(void)
bcostm	0:d83f1c8ca282	1544	{
bcostm	0:d83f1c8ca282	1545	/* Disable the SAI audio block */
bcostm	0:d83f1c8ca282	1546	__HAL_SAI_DISABLE(&BSP_AUDIO_hSai_Tx);
bcostm	0:d83f1c8ca282	1547	__HAL_SAI_DISABLE(&BSP_AUDIO_hSai_Rx);
bcostm	0:d83f1c8ca282	1548
bcostm	0:d83f1c8ca282	1549	/* De-initializes the SAI peripheral */
bcostm	0:d83f1c8ca282	1550	if (HAL_SAI_DeInit(&BSP_AUDIO_hSai_Tx) != HAL_OK)
bcostm	0:d83f1c8ca282	1551	{
bcostm	0:d83f1c8ca282	1552	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1553	}
bcostm	0:d83f1c8ca282	1554	if (HAL_SAI_DeInit(&BSP_AUDIO_hSai_Rx) != HAL_OK)
bcostm	0:d83f1c8ca282	1555	{
bcostm	0:d83f1c8ca282	1556	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1557	}
bcostm	0:d83f1c8ca282	1558
bcostm	0:d83f1c8ca282	1559	return AUDIO_OK;
bcostm	0:d83f1c8ca282	1560	}
bcostm	0:d83f1c8ca282	1561
bcostm	0:d83f1c8ca282	1562	/**
bcostm	0:d83f1c8ca282	1563	* @brief SAI MSP Init
bcostm	0:d83f1c8ca282	1564	* @param hsai : pointer to a SAI_HandleTypeDef structure
bcostm	0:d83f1c8ca282	1565	* @retval None
bcostm	0:d83f1c8ca282	1566	*/
bcostm	0:d83f1c8ca282	1567	void HAL_SAI_MspInit(SAI_HandleTypeDef *hsai)
bcostm	0:d83f1c8ca282	1568	{
bcostm	0:d83f1c8ca282	1569	GPIO_InitTypeDef GPIO_InitStruct;
bcostm	0:d83f1c8ca282	1570
bcostm	0:d83f1c8ca282	1571	/* Enable SAI clock */
bcostm	0:d83f1c8ca282	1572	__HAL_RCC_SAI1_CLK_ENABLE();
bcostm	0:d83f1c8ca282	1573
bcostm	0:d83f1c8ca282	1574	if (hsai->Instance == SAI1_Block_A)
bcostm	0:d83f1c8ca282	1575	{
bcostm	0:d83f1c8ca282	1576	/* SAI pins configuration: FS, SCK, MCLK and SD pins */
bcostm	0:d83f1c8ca282	1577	__HAL_RCC_GPIOB_CLK_ENABLE();
bcostm	0:d83f1c8ca282	1578	__HAL_RCC_GPIOE_CLK_ENABLE();
bcostm	0:d83f1c8ca282	1579	GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
bcostm	0:d83f1c8ca282	1580	GPIO_InitStruct.Pull = GPIO_NOPULL;
bcostm	0:d83f1c8ca282	1581	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
bcostm	0:d83f1c8ca282	1582	GPIO_InitStruct.Alternate = GPIO_AF13_SAI1;
bcostm	0:d83f1c8ca282	1583	GPIO_InitStruct.Pin = GPIO_PIN_2;
bcostm	0:d83f1c8ca282	1584	HAL_GPIO_Init(GPIOE, &GPIO_InitStruct); /* SAI1_MCLK_A */
bcostm	0:d83f1c8ca282	1585	GPIO_InitStruct.Pin = GPIO_PIN_4;
bcostm	0:d83f1c8ca282	1586	HAL_GPIO_Init(GPIOE, &GPIO_InitStruct); /* SAI1_FS_A */
bcostm	0:d83f1c8ca282	1587	GPIO_InitStruct.Pin = GPIO_PIN_10;
bcostm	0:d83f1c8ca282	1588	HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); /* SAI1_SCK_A */
bcostm	0:d83f1c8ca282	1589	GPIO_InitStruct.Pin = GPIO_PIN_6;
bcostm	0:d83f1c8ca282	1590	HAL_GPIO_Init(GPIOE, &GPIO_InitStruct); /* SAI1_SD_A */
bcostm	0:d83f1c8ca282	1591
bcostm	0:d83f1c8ca282	1592	/* Configure the hDmaSaiTx handle parameters */
bcostm	0:d83f1c8ca282	1593	__HAL_RCC_DMA2_CLK_ENABLE();
bcostm	0:d83f1c8ca282	1594	hDmaSaiTx.Init.Request = DMA_REQUEST_1;
bcostm	0:d83f1c8ca282	1595	hDmaSaiTx.Init.Direction = DMA_MEMORY_TO_PERIPH;
bcostm	0:d83f1c8ca282	1596	hDmaSaiTx.Init.PeriphInc = DMA_PINC_DISABLE;
bcostm	0:d83f1c8ca282	1597	hDmaSaiTx.Init.MemInc = DMA_MINC_ENABLE;
bcostm	0:d83f1c8ca282	1598	hDmaSaiTx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
bcostm	0:d83f1c8ca282	1599	hDmaSaiTx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
bcostm	0:d83f1c8ca282	1600	hDmaSaiTx.Init.Mode = DMA_CIRCULAR;
bcostm	0:d83f1c8ca282	1601	hDmaSaiTx.Init.Priority = DMA_PRIORITY_HIGH;
bcostm	0:d83f1c8ca282	1602	hDmaSaiTx.Instance = DMA2_Channel1;
bcostm	0:d83f1c8ca282	1603	/* Associate the DMA handle */
bcostm	0:d83f1c8ca282	1604	__HAL_LINKDMA(hsai, hdmatx, hDmaSaiTx);
bcostm	0:d83f1c8ca282	1605	/* Deinitialize the Stream for new transfer */
bcostm	0:d83f1c8ca282	1606	HAL_DMA_DeInit(&hDmaSaiTx);
bcostm	0:d83f1c8ca282	1607	/* Configure the DMA Stream */
bcostm	0:d83f1c8ca282	1608	HAL_DMA_Init(&hDmaSaiTx);
bcostm	0:d83f1c8ca282	1609	/* SAI DMA IRQ Channel configuration */
bcostm	0:d83f1c8ca282	1610	HAL_NVIC_SetPriority(DMA2_Channel1_IRQn, 5, 0);
bcostm	0:d83f1c8ca282	1611	HAL_NVIC_EnableIRQ(DMA2_Channel1_IRQn);
bcostm	0:d83f1c8ca282	1612	}
bcostm	0:d83f1c8ca282	1613	else /* SAI1_BlockB */
bcostm	0:d83f1c8ca282	1614	{
bcostm	0:d83f1c8ca282	1615	/* SAI pins configuration: SD pin */
bcostm	0:d83f1c8ca282	1616	__HAL_RCC_GPIOE_CLK_ENABLE();
bcostm	0:d83f1c8ca282	1617	GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
bcostm	0:d83f1c8ca282	1618	GPIO_InitStruct.Pull = GPIO_NOPULL;
bcostm	0:d83f1c8ca282	1619	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
bcostm	0:d83f1c8ca282	1620	GPIO_InitStruct.Alternate = GPIO_AF13_SAI1;
bcostm	0:d83f1c8ca282	1621	GPIO_InitStruct.Pin = GPIO_PIN_3;
bcostm	0:d83f1c8ca282	1622	HAL_GPIO_Init(GPIOE, &GPIO_InitStruct); /* SAI1_SD_B */
bcostm	0:d83f1c8ca282	1623
bcostm	0:d83f1c8ca282	1624	/* Configure the hDmaSaiRx handle parameters */
bcostm	0:d83f1c8ca282	1625	__HAL_RCC_DMA2_CLK_ENABLE();
bcostm	0:d83f1c8ca282	1626	hDmaSaiRx.Init.Request = DMA_REQUEST_1;
bcostm	0:d83f1c8ca282	1627	hDmaSaiRx.Init.Direction = DMA_PERIPH_TO_MEMORY;
bcostm	0:d83f1c8ca282	1628	hDmaSaiRx.Init.PeriphInc = DMA_PINC_DISABLE;
bcostm	0:d83f1c8ca282	1629	hDmaSaiRx.Init.MemInc = DMA_MINC_ENABLE;
bcostm	0:d83f1c8ca282	1630	hDmaSaiRx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
bcostm	0:d83f1c8ca282	1631	hDmaSaiRx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
bcostm	0:d83f1c8ca282	1632	hDmaSaiRx.Init.Mode = DMA_CIRCULAR;
bcostm	0:d83f1c8ca282	1633	hDmaSaiRx.Init.Priority = DMA_PRIORITY_HIGH;
bcostm	0:d83f1c8ca282	1634	hDmaSaiRx.Instance = DMA2_Channel2;
bcostm	0:d83f1c8ca282	1635	/* Associate the DMA handle */
bcostm	0:d83f1c8ca282	1636	__HAL_LINKDMA(hsai, hdmarx, hDmaSaiRx);
bcostm	0:d83f1c8ca282	1637	/* Deinitialize the Stream for new transfer */
bcostm	0:d83f1c8ca282	1638	HAL_DMA_DeInit(&hDmaSaiRx);
bcostm	0:d83f1c8ca282	1639	/* Configure the DMA Stream */
bcostm	0:d83f1c8ca282	1640	HAL_DMA_Init(&hDmaSaiRx);
bcostm	0:d83f1c8ca282	1641	/* SAI DMA IRQ Channel configuration */
bcostm	0:d83f1c8ca282	1642	HAL_NVIC_SetPriority(DMA2_Channel2_IRQn, 5, 0);
bcostm	0:d83f1c8ca282	1643	HAL_NVIC_EnableIRQ(DMA2_Channel2_IRQn);
bcostm	0:d83f1c8ca282	1644	}
bcostm	0:d83f1c8ca282	1645	}
bcostm	0:d83f1c8ca282	1646
bcostm	0:d83f1c8ca282	1647	/**
bcostm	0:d83f1c8ca282	1648	* @brief SAI MSP De-init
bcostm	0:d83f1c8ca282	1649	* @param hsai : pointer to a SAI_HandleTypeDef structure
bcostm	0:d83f1c8ca282	1650	* @retval None
bcostm	0:d83f1c8ca282	1651	*/
bcostm	0:d83f1c8ca282	1652	void HAL_SAI_MspDeInit(SAI_HandleTypeDef *hsai)
bcostm	0:d83f1c8ca282	1653	{
bcostm	0:d83f1c8ca282	1654	if (hsai->Instance == SAI1_Block_A)
bcostm	0:d83f1c8ca282	1655	{
bcostm	0:d83f1c8ca282	1656	/* Disable SAI DMA Channel IRQ */
bcostm	0:d83f1c8ca282	1657	HAL_NVIC_DisableIRQ(DMA2_Channel1_IRQn);
bcostm	0:d83f1c8ca282	1658
bcostm	0:d83f1c8ca282	1659	/* Reset the DMA Stream configuration*/
bcostm	0:d83f1c8ca282	1660	HAL_DMA_DeInit(&hDmaSaiTx);
bcostm	0:d83f1c8ca282	1661
bcostm	0:d83f1c8ca282	1662	/* De-initialize FS, SCK, MCK and SD pins*/
bcostm	0:d83f1c8ca282	1663	HAL_GPIO_DeInit(GPIOE, GPIO_PIN_2); /* SAI1_MCLK_A */
bcostm	0:d83f1c8ca282	1664	HAL_GPIO_DeInit(GPIOE, GPIO_PIN_4); /* SAI1_FS_A */
bcostm	0:d83f1c8ca282	1665	HAL_GPIO_DeInit(GPIOB, GPIO_PIN_10); /* SAI1_SCK_A */
bcostm	0:d83f1c8ca282	1666	HAL_GPIO_DeInit(GPIOE, GPIO_PIN_6); /* SAI1_SD_A */
bcostm	0:d83f1c8ca282	1667
bcostm	0:d83f1c8ca282	1668	/* Don't disable SAI clock used for other SAI block */
bcostm	0:d83f1c8ca282	1669	/__HAL_RCC_SAI1_CLK_DISABLE(); /
bcostm	0:d83f1c8ca282	1670	}
bcostm	0:d83f1c8ca282	1671	else /* SAI1_BlockB */
bcostm	0:d83f1c8ca282	1672	{
bcostm	0:d83f1c8ca282	1673	/* Disable SAI DMA Channel IRQ */
bcostm	0:d83f1c8ca282	1674	HAL_NVIC_DisableIRQ(DMA2_Channel2_IRQn);
bcostm	0:d83f1c8ca282	1675
bcostm	0:d83f1c8ca282	1676	/* Reset the DMA Stream configuration*/
bcostm	0:d83f1c8ca282	1677	HAL_DMA_DeInit(&hDmaSaiRx);
bcostm	0:d83f1c8ca282	1678
bcostm	0:d83f1c8ca282	1679	/* De-initialize SD pin */
bcostm	0:d83f1c8ca282	1680	HAL_GPIO_DeInit(GPIOE, GPIO_PIN_3); /* SAI1_SD_B */
bcostm	0:d83f1c8ca282	1681
bcostm	0:d83f1c8ca282	1682	/* Disable SAI clock */
bcostm	0:d83f1c8ca282	1683	__HAL_RCC_SAI1_CLK_DISABLE();
bcostm	0:d83f1c8ca282	1684	}
bcostm	0:d83f1c8ca282	1685	}
bcostm	0:d83f1c8ca282	1686
bcostm	0:d83f1c8ca282	1687	/**
bcostm	0:d83f1c8ca282	1688	* @}
bcostm	0:d83f1c8ca282	1689	*/
bcostm	0:d83f1c8ca282	1690
bcostm	0:d83f1c8ca282	1691	/** @addtogroup STM32L496G_DISCOVERY_AUDIO_Private_Functions
bcostm	0:d83f1c8ca282	1692	* @{
bcostm	0:d83f1c8ca282	1693	*/
bcostm	0:d83f1c8ca282	1694
bcostm	0:d83f1c8ca282	1695	/**
bcostm	0:d83f1c8ca282	1696	* @brief Initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).
bcostm	0:d83f1c8ca282	1697	* @param AudioFreq: Audio frequency to be used to set correctly the DFSDM peripheral.
bcostm	0:d83f1c8ca282	1698	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	1699	*/
bcostm	0:d83f1c8ca282	1700	static uint8_t AUDIO_DFSDMx_Init(uint32_t AudioFreq)
bcostm	0:d83f1c8ca282	1701	{
bcostm	0:d83f1c8ca282	1702	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	1703	{
bcostm	0:d83f1c8ca282	1704	/####CHANNEL 3####/
bcostm	0:d83f1c8ca282	1705	hAudioIn.hDfsdmLeftChannel.Init.OutputClock.Activation = ENABLE;
bcostm	0:d83f1c8ca282	1706	hAudioIn.hDfsdmLeftChannel.Init.OutputClock.Selection = DFSDM_CHANNEL_OUTPUT_CLOCK_AUDIO;
bcostm	0:d83f1c8ca282	1707	/* Set the DFSDM clock OUT audio frequency configuration */
bcostm	0:d83f1c8ca282	1708	hAudioIn.hDfsdmLeftChannel.Init.OutputClock.Divider = DFSDMClockDivider(AudioFreq);
bcostm	0:d83f1c8ca282	1709	hAudioIn.hDfsdmLeftChannel.Init.Input.Multiplexer = DFSDM_CHANNEL_EXTERNAL_INPUTS;
bcostm	0:d83f1c8ca282	1710	hAudioIn.hDfsdmLeftChannel.Init.Input.DataPacking = DFSDM_CHANNEL_STANDARD_MODE;
bcostm	0:d83f1c8ca282	1711	hAudioIn.hDfsdmLeftChannel.Init.Input.Pins = DFSDM_CHANNEL_SAME_CHANNEL_PINS;
bcostm	0:d83f1c8ca282	1712	/* Request to sample stable data for LEFT micro on Rising edge */
bcostm	0:d83f1c8ca282	1713	hAudioIn.hDfsdmLeftChannel.Init.SerialInterface.Type = DFSDM_CHANNEL_SPI_RISING;
bcostm	0:d83f1c8ca282	1714	hAudioIn.hDfsdmLeftChannel.Init.SerialInterface.SpiClock = DFSDM_CHANNEL_SPI_CLOCK_INTERNAL;
bcostm	0:d83f1c8ca282	1715	hAudioIn.hDfsdmLeftChannel.Init.Awd.FilterOrder = DFSDM_CHANNEL_SINC1_ORDER;
bcostm	0:d83f1c8ca282	1716	hAudioIn.hDfsdmLeftChannel.Init.Awd.Oversampling = 10;
bcostm	0:d83f1c8ca282	1717	hAudioIn.hDfsdmLeftChannel.Init.Offset = 0;
bcostm	0:d83f1c8ca282	1718	hAudioIn.hDfsdmLeftChannel.Init.RightBitShift = DFSDMRightBitShift(AudioFreq);
bcostm	0:d83f1c8ca282	1719	hAudioIn.hDfsdmLeftChannel.Instance = DFSDM1_Channel3;
bcostm	0:d83f1c8ca282	1720
bcostm	0:d83f1c8ca282	1721	/* Init the DFSDM Channel */
bcostm	0:d83f1c8ca282	1722	if (HAL_DFSDM_ChannelInit(&hAudioIn.hDfsdmLeftChannel) != HAL_OK)
bcostm	0:d83f1c8ca282	1723	{
bcostm	0:d83f1c8ca282	1724	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1725	}
bcostm	0:d83f1c8ca282	1726	}
bcostm	0:d83f1c8ca282	1727
bcostm	0:d83f1c8ca282	1728	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1729	{
bcostm	0:d83f1c8ca282	1730	/####CHANNEL 2####/
bcostm	0:d83f1c8ca282	1731	hAudioIn.hDfsdmRightChannel.Init.OutputClock.Activation = ENABLE;
bcostm	0:d83f1c8ca282	1732	hAudioIn.hDfsdmRightChannel.Init.OutputClock.Selection = DFSDM_CHANNEL_OUTPUT_CLOCK_AUDIO;
bcostm	0:d83f1c8ca282	1733	/* Set the DFSDM clock OUT audio frequency configuration */
bcostm	0:d83f1c8ca282	1734	hAudioIn.hDfsdmRightChannel.Init.OutputClock.Divider = DFSDMClockDivider(AudioFreq);
bcostm	0:d83f1c8ca282	1735	hAudioIn.hDfsdmRightChannel.Init.Input.Multiplexer = DFSDM_CHANNEL_EXTERNAL_INPUTS;
bcostm	0:d83f1c8ca282	1736	hAudioIn.hDfsdmRightChannel.Init.Input.DataPacking = DFSDM_CHANNEL_STANDARD_MODE;
bcostm	0:d83f1c8ca282	1737	hAudioIn.hDfsdmRightChannel.Init.Input.Pins = DFSDM_CHANNEL_FOLLOWING_CHANNEL_PINS;
bcostm	0:d83f1c8ca282	1738	/* Request to sample stable data for LEFT micro on Rising edge */
bcostm	0:d83f1c8ca282	1739	hAudioIn.hDfsdmRightChannel.Init.SerialInterface.Type = DFSDM_CHANNEL_SPI_FALLING;
bcostm	0:d83f1c8ca282	1740	hAudioIn.hDfsdmRightChannel.Init.SerialInterface.SpiClock = DFSDM_CHANNEL_SPI_CLOCK_INTERNAL;
bcostm	0:d83f1c8ca282	1741	hAudioIn.hDfsdmRightChannel.Init.Awd.FilterOrder = DFSDM_CHANNEL_SINC1_ORDER;
bcostm	0:d83f1c8ca282	1742	hAudioIn.hDfsdmRightChannel.Init.Awd.Oversampling = 10;
bcostm	0:d83f1c8ca282	1743	hAudioIn.hDfsdmRightChannel.Init.Offset = 0;
bcostm	0:d83f1c8ca282	1744	hAudioIn.hDfsdmRightChannel.Init.RightBitShift = DFSDMRightBitShift(AudioFreq);
bcostm	0:d83f1c8ca282	1745	hAudioIn.hDfsdmRightChannel.Instance = DFSDM1_Channel2;
bcostm	0:d83f1c8ca282	1746
bcostm	0:d83f1c8ca282	1747	/* Init the DFSDM Channel */
bcostm	0:d83f1c8ca282	1748	if (HAL_DFSDM_ChannelInit(&hAudioIn.hDfsdmRightChannel) != HAL_OK)
bcostm	0:d83f1c8ca282	1749	{
bcostm	0:d83f1c8ca282	1750	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1751	}
bcostm	0:d83f1c8ca282	1752	}
bcostm	0:d83f1c8ca282	1753
bcostm	0:d83f1c8ca282	1754	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	1755	{
bcostm	0:d83f1c8ca282	1756	/####FILTER 0####/
bcostm	0:d83f1c8ca282	1757	BSP_AUDIO_hDfsdmLeftFilter.Init.RegularParam.Trigger = DFSDM_FILTER_SW_TRIGGER;
bcostm	0:d83f1c8ca282	1758	BSP_AUDIO_hDfsdmLeftFilter.Init.RegularParam.FastMode = ENABLE;
bcostm	0:d83f1c8ca282	1759	BSP_AUDIO_hDfsdmLeftFilter.Init.RegularParam.DmaMode = ENABLE;
bcostm	0:d83f1c8ca282	1760	BSP_AUDIO_hDfsdmLeftFilter.Init.InjectedParam.Trigger = DFSDM_FILTER_SW_TRIGGER;
bcostm	0:d83f1c8ca282	1761	BSP_AUDIO_hDfsdmLeftFilter.Init.InjectedParam.ScanMode = DISABLE;
bcostm	0:d83f1c8ca282	1762	BSP_AUDIO_hDfsdmLeftFilter.Init.InjectedParam.DmaMode = DISABLE;
bcostm	0:d83f1c8ca282	1763	BSP_AUDIO_hDfsdmLeftFilter.Init.InjectedParam.ExtTrigger = DFSDM_FILTER_EXT_TRIG_TIM8_TRGO;
bcostm	0:d83f1c8ca282	1764	BSP_AUDIO_hDfsdmLeftFilter.Init.InjectedParam.ExtTriggerEdge = DFSDM_FILTER_EXT_TRIG_BOTH_EDGES;
bcostm	0:d83f1c8ca282	1765	BSP_AUDIO_hDfsdmLeftFilter.Init.FilterParam.SincOrder = DFSDMFilterOrder(AudioFreq);
bcostm	0:d83f1c8ca282	1766	/* Set the DFSDM Filters Oversampling to have correct sample rate */
bcostm	0:d83f1c8ca282	1767	BSP_AUDIO_hDfsdmLeftFilter.Init.FilterParam.Oversampling = DFSDMOverSampling(AudioFreq);
bcostm	0:d83f1c8ca282	1768	BSP_AUDIO_hDfsdmLeftFilter.Init.FilterParam.IntOversampling = 1;
bcostm	0:d83f1c8ca282	1769	BSP_AUDIO_hDfsdmLeftFilter.Instance = DFSDM1_Filter0;
bcostm	0:d83f1c8ca282	1770
bcostm	0:d83f1c8ca282	1771	/* Init the DFSDM Filter */
bcostm	0:d83f1c8ca282	1772	if (HAL_DFSDM_FilterInit(&BSP_AUDIO_hDfsdmLeftFilter) != HAL_OK)
bcostm	0:d83f1c8ca282	1773	{
bcostm	0:d83f1c8ca282	1774	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1775	}
bcostm	0:d83f1c8ca282	1776
bcostm	0:d83f1c8ca282	1777	/* Configure regular channel */
bcostm	0:d83f1c8ca282	1778	if (HAL_DFSDM_FilterConfigRegChannel(&BSP_AUDIO_hDfsdmLeftFilter,
bcostm	0:d83f1c8ca282	1779	DFSDM_CHANNEL_3,
bcostm	0:d83f1c8ca282	1780	DFSDM_CONTINUOUS_CONV_ON) != HAL_OK)
bcostm	0:d83f1c8ca282	1781	{
bcostm	0:d83f1c8ca282	1782	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1783	}
bcostm	0:d83f1c8ca282	1784	}
bcostm	0:d83f1c8ca282	1785
bcostm	0:d83f1c8ca282	1786	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1787	{
bcostm	0:d83f1c8ca282	1788	/####FILTER 1####/
bcostm	0:d83f1c8ca282	1789	if (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1790	{
bcostm	0:d83f1c8ca282	1791	BSP_AUDIO_hDfsdmRightFilter.Init.RegularParam.Trigger = DFSDM_FILTER_SW_TRIGGER;
bcostm	0:d83f1c8ca282	1792	}
bcostm	0:d83f1c8ca282	1793	else
bcostm	0:d83f1c8ca282	1794	{
bcostm	0:d83f1c8ca282	1795	BSP_AUDIO_hDfsdmRightFilter.Init.RegularParam.Trigger = DFSDM_FILTER_SYNC_TRIGGER;
bcostm	0:d83f1c8ca282	1796	}
bcostm	0:d83f1c8ca282	1797	BSP_AUDIO_hDfsdmRightFilter.Init.RegularParam.FastMode = ENABLE;
bcostm	0:d83f1c8ca282	1798	BSP_AUDIO_hDfsdmRightFilter.Init.RegularParam.DmaMode = ENABLE;
bcostm	0:d83f1c8ca282	1799	BSP_AUDIO_hDfsdmRightFilter.Init.InjectedParam.Trigger = DFSDM_FILTER_SW_TRIGGER;
bcostm	0:d83f1c8ca282	1800	BSP_AUDIO_hDfsdmRightFilter.Init.InjectedParam.ScanMode = DISABLE;
bcostm	0:d83f1c8ca282	1801	BSP_AUDIO_hDfsdmRightFilter.Init.InjectedParam.DmaMode = DISABLE;
bcostm	0:d83f1c8ca282	1802	BSP_AUDIO_hDfsdmRightFilter.Init.InjectedParam.ExtTrigger = DFSDM_FILTER_EXT_TRIG_TIM8_TRGO;
bcostm	0:d83f1c8ca282	1803	BSP_AUDIO_hDfsdmRightFilter.Init.InjectedParam.ExtTriggerEdge = DFSDM_FILTER_EXT_TRIG_BOTH_EDGES;
bcostm	0:d83f1c8ca282	1804	BSP_AUDIO_hDfsdmRightFilter.Init.FilterParam.SincOrder = DFSDMFilterOrder(AudioFreq);
bcostm	0:d83f1c8ca282	1805	/* Set the DFSDM Filters Oversampling to have correct sample rate */
bcostm	0:d83f1c8ca282	1806	BSP_AUDIO_hDfsdmRightFilter.Init.FilterParam.Oversampling = DFSDMOverSampling(AudioFreq);
bcostm	0:d83f1c8ca282	1807	BSP_AUDIO_hDfsdmRightFilter.Init.FilterParam.IntOversampling = 1;
bcostm	0:d83f1c8ca282	1808	BSP_AUDIO_hDfsdmRightFilter.Instance = DFSDM1_Filter1;
bcostm	0:d83f1c8ca282	1809
bcostm	0:d83f1c8ca282	1810	/* Init the DFSDM Filter */
bcostm	0:d83f1c8ca282	1811	if (HAL_DFSDM_FilterInit(&BSP_AUDIO_hDfsdmRightFilter) != HAL_OK)
bcostm	0:d83f1c8ca282	1812	{
bcostm	0:d83f1c8ca282	1813	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1814	}
bcostm	0:d83f1c8ca282	1815
bcostm	0:d83f1c8ca282	1816	/* Configure regular channel */
bcostm	0:d83f1c8ca282	1817	if (HAL_DFSDM_FilterConfigRegChannel(&BSP_AUDIO_hDfsdmRightFilter,
bcostm	0:d83f1c8ca282	1818	DFSDM_CHANNEL_2,
bcostm	0:d83f1c8ca282	1819	DFSDM_CONTINUOUS_CONV_ON) != HAL_OK)
bcostm	0:d83f1c8ca282	1820	{
bcostm	0:d83f1c8ca282	1821	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1822	}
bcostm	0:d83f1c8ca282	1823	}
bcostm	0:d83f1c8ca282	1824
bcostm	0:d83f1c8ca282	1825	return AUDIO_OK;
bcostm	0:d83f1c8ca282	1826	}
bcostm	0:d83f1c8ca282	1827
bcostm	0:d83f1c8ca282	1828	/**
bcostm	0:d83f1c8ca282	1829	* @brief De-initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).
bcostm	0:d83f1c8ca282	1830	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	1831	*/
bcostm	0:d83f1c8ca282	1832	static uint8_t AUDIO_DFSDMx_DeInit(void)
bcostm	0:d83f1c8ca282	1833	{
bcostm	0:d83f1c8ca282	1834	/* De-initializes the DFSDM filters to allow access to DFSDM internal registers */
bcostm	0:d83f1c8ca282	1835	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1836	{
bcostm	0:d83f1c8ca282	1837	if (HAL_DFSDM_FilterDeInit(&BSP_AUDIO_hDfsdmRightFilter) != HAL_OK)
bcostm	0:d83f1c8ca282	1838	{
bcostm	0:d83f1c8ca282	1839	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1840	}
bcostm	0:d83f1c8ca282	1841	}
bcostm	0:d83f1c8ca282	1842	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	1843	{
bcostm	0:d83f1c8ca282	1844	if (HAL_DFSDM_FilterDeInit(&BSP_AUDIO_hDfsdmLeftFilter) != HAL_OK)
bcostm	0:d83f1c8ca282	1845	{
bcostm	0:d83f1c8ca282	1846	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1847	}
bcostm	0:d83f1c8ca282	1848	}
bcostm	0:d83f1c8ca282	1849
bcostm	0:d83f1c8ca282	1850	/* De-initializes the DFSDM channels to allow access to DFSDM internal registers */
bcostm	0:d83f1c8ca282	1851	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC2) == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1852	{
bcostm	0:d83f1c8ca282	1853	if (HAL_DFSDM_ChannelDeInit(&hAudioIn.hDfsdmRightChannel) != HAL_OK)
bcostm	0:d83f1c8ca282	1854	{
bcostm	0:d83f1c8ca282	1855	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1856	}
bcostm	0:d83f1c8ca282	1857	}
bcostm	0:d83f1c8ca282	1858	if ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) == INPUT_DEVICE_DIGITAL_MIC1)
bcostm	0:d83f1c8ca282	1859	{
bcostm	0:d83f1c8ca282	1860	if (HAL_DFSDM_ChannelDeInit(&hAudioIn.hDfsdmLeftChannel) != HAL_OK)
bcostm	0:d83f1c8ca282	1861	{
bcostm	0:d83f1c8ca282	1862	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	1863	}
bcostm	0:d83f1c8ca282	1864	}
bcostm	0:d83f1c8ca282	1865
bcostm	0:d83f1c8ca282	1866	/* DFSDM reset */
bcostm	0:d83f1c8ca282	1867	__HAL_RCC_DFSDM1_FORCE_RESET();
bcostm	0:d83f1c8ca282	1868	__HAL_RCC_DFSDM1_RELEASE_RESET();
bcostm	0:d83f1c8ca282	1869
bcostm	0:d83f1c8ca282	1870	return AUDIO_OK;
bcostm	0:d83f1c8ca282	1871	}
bcostm	0:d83f1c8ca282	1872
bcostm	0:d83f1c8ca282	1873	/**
bcostm	0:d83f1c8ca282	1874	* @brief Initializes the DFSDM channel MSP.
bcostm	0:d83f1c8ca282	1875	* @param hdfsdm_channel : DFSDM channel handle.
bcostm	0:d83f1c8ca282	1876	* @retval None
bcostm	0:d83f1c8ca282	1877	*/
bcostm	0:d83f1c8ca282	1878	void HAL_DFSDM_ChannelMspInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
bcostm	0:d83f1c8ca282	1879	{
bcostm	0:d83f1c8ca282	1880	if (((hdfsdm_channel->Instance == DFSDM1_Channel3) && ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) != 0)) \|\| \
bcostm	0:d83f1c8ca282	1881	((hdfsdm_channel->Instance == DFSDM1_Channel2) && (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC2)))
bcostm	0:d83f1c8ca282	1882	{
bcostm	0:d83f1c8ca282	1883	GPIO_InitTypeDef GPIO_InitStruct;
bcostm	0:d83f1c8ca282	1884
bcostm	0:d83f1c8ca282	1885	/* Enable DFSDM clock */
bcostm	0:d83f1c8ca282	1886	__HAL_RCC_DFSDM1_CLK_ENABLE();
bcostm	0:d83f1c8ca282	1887
bcostm	0:d83f1c8ca282	1888	/* DFSDM pins configuration: DFSDM1_CKOUT, DFSDM1_DATIN3 pins */
bcostm	0:d83f1c8ca282	1889	__HAL_RCC_GPIOC_CLK_ENABLE();
bcostm	0:d83f1c8ca282	1890	GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
bcostm	0:d83f1c8ca282	1891	GPIO_InitStruct.Pull = GPIO_NOPULL;
bcostm	0:d83f1c8ca282	1892	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
bcostm	0:d83f1c8ca282	1893	GPIO_InitStruct.Alternate = GPIO_AF6_DFSDM1;
bcostm	0:d83f1c8ca282	1894	GPIO_InitStruct.Pin = GPIO_PIN_2;
bcostm	0:d83f1c8ca282	1895	HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); /* DFSDM1_CKOUT */
bcostm	0:d83f1c8ca282	1896	GPIO_InitStruct.Pin = GPIO_PIN_7;
bcostm	0:d83f1c8ca282	1897	HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); /* DFSDM1_DATIN3 */
bcostm	0:d83f1c8ca282	1898
bcostm	0:d83f1c8ca282	1899	/* Enable MIC_VDD (PH1) */
bcostm	0:d83f1c8ca282	1900	__HAL_RCC_GPIOH_CLK_ENABLE();
bcostm	0:d83f1c8ca282	1901	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
bcostm	0:d83f1c8ca282	1902	GPIO_InitStruct.Pull = GPIO_NOPULL;
bcostm	0:d83f1c8ca282	1903	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
bcostm	0:d83f1c8ca282	1904	GPIO_InitStruct.Pin = GPIO_PIN_1;
bcostm	0:d83f1c8ca282	1905	HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);
bcostm	0:d83f1c8ca282	1906	HAL_GPIO_WritePin(GPIOH, GPIO_PIN_1, GPIO_PIN_SET);
bcostm	0:d83f1c8ca282	1907	}
bcostm	0:d83f1c8ca282	1908	}
bcostm	0:d83f1c8ca282	1909
bcostm	0:d83f1c8ca282	1910	/**
bcostm	0:d83f1c8ca282	1911	* @brief De-initializes the DFSDM channel MSP.
bcostm	0:d83f1c8ca282	1912	* @param hdfsdm_channel : DFSDM channel handle.
bcostm	0:d83f1c8ca282	1913	* @retval None
bcostm	0:d83f1c8ca282	1914	*/
bcostm	0:d83f1c8ca282	1915	void HAL_DFSDM_ChannelMspDeInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
bcostm	0:d83f1c8ca282	1916	{
bcostm	0:d83f1c8ca282	1917	if (((hdfsdm_channel->Instance == DFSDM1_Channel3) && ((hAudioIn.InputDevice & INPUT_DEVICE_DIGITAL_MIC1) != 0)) \|\| \
bcostm	0:d83f1c8ca282	1918	((hdfsdm_channel->Instance == DFSDM1_Channel2) && (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC2)))
bcostm	0:d83f1c8ca282	1919	{
bcostm	0:d83f1c8ca282	1920	/* Disable MIC_VDD (PH1) */
bcostm	0:d83f1c8ca282	1921	HAL_GPIO_WritePin(GPIOH, GPIO_PIN_1, GPIO_PIN_RESET);
bcostm	0:d83f1c8ca282	1922	HAL_GPIO_DeInit(GPIOH, GPIO_PIN_1);
bcostm	0:d83f1c8ca282	1923
bcostm	0:d83f1c8ca282	1924	/* De-initialize DFSDM1_CKOUT, DFSDM1_DATIN3 pins */
bcostm	0:d83f1c8ca282	1925	HAL_GPIO_DeInit(GPIOC, GPIO_PIN_2); /* DFSDM1_CKOUT */
bcostm	0:d83f1c8ca282	1926	HAL_GPIO_DeInit(GPIOC, GPIO_PIN_7); /* DFSDM1_DATIN3 */
bcostm	0:d83f1c8ca282	1927
bcostm	0:d83f1c8ca282	1928	/* Disable DFSDM1 */
bcostm	0:d83f1c8ca282	1929	__HAL_RCC_DFSDM1_CLK_DISABLE();
bcostm	0:d83f1c8ca282	1930	}
bcostm	0:d83f1c8ca282	1931	}
bcostm	0:d83f1c8ca282	1932
bcostm	0:d83f1c8ca282	1933	/**
bcostm	0:d83f1c8ca282	1934	* @brief Initializes the DFSDM filter MSP.
bcostm	0:d83f1c8ca282	1935	* @param hdfsdm_filter : DFSDM filter handle.
bcostm	0:d83f1c8ca282	1936	* @retval None
bcostm	0:d83f1c8ca282	1937	*/
bcostm	0:d83f1c8ca282	1938	void HAL_DFSDM_FilterMspInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
bcostm	0:d83f1c8ca282	1939	{
bcostm	0:d83f1c8ca282	1940	if (hdfsdm_filter->Instance == DFSDM1_Filter0)
bcostm	0:d83f1c8ca282	1941	{
bcostm	0:d83f1c8ca282	1942	/* Enable the DMA clock */
bcostm	0:d83f1c8ca282	1943	__HAL_RCC_DMA1_CLK_ENABLE();
bcostm	0:d83f1c8ca282	1944
bcostm	0:d83f1c8ca282	1945	/* Configure the hAudioIn.hDmaDfsdmLeft handle parameters */
bcostm	0:d83f1c8ca282	1946	hAudioIn.hDmaDfsdmLeft.Init.Request = DMA_REQUEST_0;
bcostm	0:d83f1c8ca282	1947	hAudioIn.hDmaDfsdmLeft.Init.Direction = DMA_PERIPH_TO_MEMORY;
bcostm	0:d83f1c8ca282	1948	hAudioIn.hDmaDfsdmLeft.Init.PeriphInc = DMA_PINC_DISABLE;
bcostm	0:d83f1c8ca282	1949	hAudioIn.hDmaDfsdmLeft.Init.MemInc = DMA_MINC_ENABLE;
bcostm	0:d83f1c8ca282	1950	hAudioIn.hDmaDfsdmLeft.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
bcostm	0:d83f1c8ca282	1951	hAudioIn.hDmaDfsdmLeft.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
bcostm	0:d83f1c8ca282	1952	hAudioIn.hDmaDfsdmLeft.Init.Mode = DMA_CIRCULAR;
bcostm	0:d83f1c8ca282	1953	hAudioIn.hDmaDfsdmLeft.Init.Priority = DMA_PRIORITY_HIGH;
bcostm	0:d83f1c8ca282	1954	hAudioIn.hDmaDfsdmLeft.Instance = DMA1_Channel4;
bcostm	0:d83f1c8ca282	1955
bcostm	0:d83f1c8ca282	1956	/* Associate the DMA handle */
bcostm	0:d83f1c8ca282	1957	__HAL_LINKDMA(hdfsdm_filter, hdmaReg, hAudioIn.hDmaDfsdmLeft);
bcostm	0:d83f1c8ca282	1958
bcostm	0:d83f1c8ca282	1959	/* Reset DMA handle state */
bcostm	0:d83f1c8ca282	1960	__HAL_DMA_RESET_HANDLE_STATE(&hAudioIn.hDmaDfsdmLeft);
bcostm	0:d83f1c8ca282	1961
bcostm	0:d83f1c8ca282	1962	/* Configure the DMA Channel */
bcostm	0:d83f1c8ca282	1963	HAL_DMA_Init(&hAudioIn.hDmaDfsdmLeft);
bcostm	0:d83f1c8ca282	1964
bcostm	0:d83f1c8ca282	1965	/* DMA IRQ Channel configuration */
bcostm	0:d83f1c8ca282	1966	HAL_NVIC_SetPriority(DMA1_Channel4_IRQn, 5, 0);
bcostm	0:d83f1c8ca282	1967	HAL_NVIC_EnableIRQ(DMA1_Channel4_IRQn);
bcostm	0:d83f1c8ca282	1968	}
bcostm	0:d83f1c8ca282	1969	else /* DFSDM1_Filter1 */
bcostm	0:d83f1c8ca282	1970	{
bcostm	0:d83f1c8ca282	1971	if (hAudioIn.InputDevice == INPUT_DEVICE_DIGITAL_MIC2)
bcostm	0:d83f1c8ca282	1972	{
bcostm	0:d83f1c8ca282	1973	/* Enable the DMA clock needed if only MIC2 is used */
bcostm	0:d83f1c8ca282	1974	__HAL_RCC_DMA1_CLK_ENABLE();
bcostm	0:d83f1c8ca282	1975	}
bcostm	0:d83f1c8ca282	1976
bcostm	0:d83f1c8ca282	1977	/* Configure the hAudioIn.hDmaDfsdmRight handle parameters */
bcostm	0:d83f1c8ca282	1978	hAudioIn.hDmaDfsdmRight.Init.Request = DMA_REQUEST_0;
bcostm	0:d83f1c8ca282	1979	hAudioIn.hDmaDfsdmRight.Init.Direction = DMA_PERIPH_TO_MEMORY;
bcostm	0:d83f1c8ca282	1980	hAudioIn.hDmaDfsdmRight.Init.PeriphInc = DMA_PINC_DISABLE;
bcostm	0:d83f1c8ca282	1981	hAudioIn.hDmaDfsdmRight.Init.MemInc = DMA_MINC_ENABLE;
bcostm	0:d83f1c8ca282	1982	hAudioIn.hDmaDfsdmRight.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
bcostm	0:d83f1c8ca282	1983	hAudioIn.hDmaDfsdmRight.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
bcostm	0:d83f1c8ca282	1984	hAudioIn.hDmaDfsdmRight.Init.Mode = DMA_CIRCULAR;
bcostm	0:d83f1c8ca282	1985	hAudioIn.hDmaDfsdmRight.Init.Priority = DMA_PRIORITY_HIGH;
bcostm	0:d83f1c8ca282	1986	hAudioIn.hDmaDfsdmRight.Instance = DMA1_Channel5;
bcostm	0:d83f1c8ca282	1987
bcostm	0:d83f1c8ca282	1988	/* Associate the DMA handle */
bcostm	0:d83f1c8ca282	1989	__HAL_LINKDMA(hdfsdm_filter, hdmaReg, hAudioIn.hDmaDfsdmRight);
bcostm	0:d83f1c8ca282	1990
bcostm	0:d83f1c8ca282	1991	/* Reset DMA handle state */
bcostm	0:d83f1c8ca282	1992	__HAL_DMA_RESET_HANDLE_STATE(&hAudioIn.hDmaDfsdmRight);
bcostm	0:d83f1c8ca282	1993
bcostm	0:d83f1c8ca282	1994	/* Configure the DMA Channel */
bcostm	0:d83f1c8ca282	1995	HAL_DMA_Init(&hAudioIn.hDmaDfsdmRight);
bcostm	0:d83f1c8ca282	1996
bcostm	0:d83f1c8ca282	1997	/* DMA IRQ Channel configuration */
bcostm	0:d83f1c8ca282	1998	HAL_NVIC_SetPriority(DMA1_Channel5_IRQn, 5, 0);
bcostm	0:d83f1c8ca282	1999	HAL_NVIC_EnableIRQ(DMA1_Channel5_IRQn);
bcostm	0:d83f1c8ca282	2000	}
bcostm	0:d83f1c8ca282	2001	}
bcostm	0:d83f1c8ca282	2002
bcostm	0:d83f1c8ca282	2003	/**
bcostm	0:d83f1c8ca282	2004	* @brief De-initializes the DFSDM filter MSP.
bcostm	0:d83f1c8ca282	2005	* @param hdfsdm_filter : DFSDM filter handle.
bcostm	0:d83f1c8ca282	2006	* @retval None
bcostm	0:d83f1c8ca282	2007	*/
bcostm	0:d83f1c8ca282	2008	void HAL_DFSDM_FilterMspDeInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
bcostm	0:d83f1c8ca282	2009	{
bcostm	0:d83f1c8ca282	2010	if (hdfsdm_filter->Instance == DFSDM1_Filter0)
bcostm	0:d83f1c8ca282	2011	{
bcostm	0:d83f1c8ca282	2012	/* Disable DMA Channel IRQ */
bcostm	0:d83f1c8ca282	2013	HAL_NVIC_DisableIRQ(DMA1_Channel4_IRQn);
bcostm	0:d83f1c8ca282	2014
bcostm	0:d83f1c8ca282	2015	/* De-initialize the DMA Channel */
bcostm	0:d83f1c8ca282	2016	HAL_DMA_DeInit(&hAudioIn.hDmaDfsdmLeft);
bcostm	0:d83f1c8ca282	2017	}
bcostm	0:d83f1c8ca282	2018	else /* DFSDM1_Filter1 */
bcostm	0:d83f1c8ca282	2019	{
bcostm	0:d83f1c8ca282	2020	/* Disable DMA Channel IRQ */
bcostm	0:d83f1c8ca282	2021	HAL_NVIC_DisableIRQ(DMA1_Channel5_IRQn);
bcostm	0:d83f1c8ca282	2022
bcostm	0:d83f1c8ca282	2023	/* De-initialize the DMA Channel */
bcostm	0:d83f1c8ca282	2024	HAL_DMA_DeInit(&hAudioIn.hDmaDfsdmRight);
bcostm	0:d83f1c8ca282	2025	}
bcostm	0:d83f1c8ca282	2026	}
bcostm	0:d83f1c8ca282	2027
bcostm	0:d83f1c8ca282	2028	/**
bcostm	0:d83f1c8ca282	2029	* @brief Configures the SAI PLL clock according to the required audio frequency.
bcostm	0:d83f1c8ca282	2030	* @param Frequency: Audio frequency.
bcostm	0:d83f1c8ca282	2031	* @retval BSP AUDIO status
bcostm	0:d83f1c8ca282	2032	* @note The SAI PLL input clock must be configured in the user application.
bcostm	0:d83f1c8ca282	2033	* The SAI PLL configuration done within this function assumes that
bcostm	0:d83f1c8ca282	2034	* the SAI PLL input clock runs at 8 MHz.
bcostm	0:d83f1c8ca282	2035	*/
bcostm	0:d83f1c8ca282	2036	static uint8_t AUDIO_SAIPLLConfig(uint32_t Frequency)
bcostm	0:d83f1c8ca282	2037	{
bcostm	0:d83f1c8ca282	2038	RCC_PeriphCLKInitTypeDef RCC_ExCLKInitStruct;
bcostm	0:d83f1c8ca282	2039
bcostm	0:d83f1c8ca282	2040	/* Retrieve actual RCC configuration */
bcostm	0:d83f1c8ca282	2041	HAL_RCCEx_GetPeriphCLKConfig(&RCC_ExCLKInitStruct);
bcostm	0:d83f1c8ca282	2042
bcostm	0:d83f1c8ca282	2043	if ((Frequency == AUDIO_FREQUENCY_11K)
bcostm	0:d83f1c8ca282	2044	\|\| (Frequency == AUDIO_FREQUENCY_22K)
bcostm	0:d83f1c8ca282	2045	\|\| (Frequency == AUDIO_FREQUENCY_44K))
bcostm	0:d83f1c8ca282	2046	{
bcostm	0:d83f1c8ca282	2047	/* Configure PLLSAI prescalers */
bcostm	0:d83f1c8ca282	2048	/* SAI clock config
bcostm	0:d83f1c8ca282	2049	PLLSAI2_VCO= 8 Mhz * PLLSAI1N = 8 * 24 = VCO_192M
bcostm	0:d83f1c8ca282	2050	SAI_CK_x = PLLSAI2_VCO/PLLSAI1P = 192/17 = 11.294 Mhz */
bcostm	0:d83f1c8ca282	2051	RCC_ExCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_SAI1;
bcostm	0:d83f1c8ca282	2052	RCC_ExCLKInitStruct.PLLSAI2.PLLSAI2N = 24;
bcostm	0:d83f1c8ca282	2053	RCC_ExCLKInitStruct.PLLSAI2.PLLSAI2P = 17;
bcostm	0:d83f1c8ca282	2054	RCC_ExCLKInitStruct.PLLSAI2.PLLSAI2ClockOut = RCC_PLLSAI2_SAI2CLK;
bcostm	0:d83f1c8ca282	2055	RCC_ExCLKInitStruct.Sai1ClockSelection = RCC_SAI1CLKSOURCE_PLLSAI2;
bcostm	0:d83f1c8ca282	2056	}
bcostm	0:d83f1c8ca282	2057	else /* AUDIO_FREQUENCY_8K, AUDIO_FREQUENCY_16K, AUDIO_FREQUENCY_48K, AUDIO_FREQUENCY_96K */
bcostm	0:d83f1c8ca282	2058	{
bcostm	0:d83f1c8ca282	2059	/* SAI clock config
bcostm	0:d83f1c8ca282	2060	PLLSAI2_VCO= 8 Mhz * PLLSAI1N = 8 * 43 = VCO_344M
bcostm	0:d83f1c8ca282	2061	SAI_CK_x = PLLSAI1_VCO/PLLSAI2P = 344/7 = 49.142 Mhz */
bcostm	0:d83f1c8ca282	2062	RCC_ExCLKInitStruct.PeriphClockSelection = RCC_PERIPHCLK_SAI1;
bcostm	0:d83f1c8ca282	2063	RCC_ExCLKInitStruct.PLLSAI2.PLLSAI2N = 43;
bcostm	0:d83f1c8ca282	2064	RCC_ExCLKInitStruct.PLLSAI2.PLLSAI2P = 7;
bcostm	0:d83f1c8ca282	2065	RCC_ExCLKInitStruct.PLLSAI2.PLLSAI2ClockOut = RCC_PLLSAI2_SAI2CLK;
bcostm	0:d83f1c8ca282	2066	RCC_ExCLKInitStruct.Sai1ClockSelection = RCC_SAI1CLKSOURCE_PLLSAI2;
bcostm	0:d83f1c8ca282	2067	}
bcostm	0:d83f1c8ca282	2068
bcostm	0:d83f1c8ca282	2069	if (HAL_RCCEx_PeriphCLKConfig(&RCC_ExCLKInitStruct) != HAL_OK)
bcostm	0:d83f1c8ca282	2070	{
bcostm	0:d83f1c8ca282	2071	return AUDIO_ERROR;
bcostm	0:d83f1c8ca282	2072	}
bcostm	0:d83f1c8ca282	2073
bcostm	0:d83f1c8ca282	2074	return AUDIO_OK;
bcostm	0:d83f1c8ca282	2075	}
bcostm	0:d83f1c8ca282	2076
bcostm	0:d83f1c8ca282	2077	/**
bcostm	0:d83f1c8ca282	2078	* @}
bcostm	0:d83f1c8ca282	2079	*/
bcostm	0:d83f1c8ca282	2080
bcostm	0:d83f1c8ca282	2081	/**
bcostm	0:d83f1c8ca282	2082	* @}
bcostm	0:d83f1c8ca282	2083	*/
bcostm	0:d83f1c8ca282	2084
bcostm	0:d83f1c8ca282	2085	/**
bcostm	0:d83f1c8ca282	2086	* @}
bcostm	0:d83f1c8ca282	2087	*/
bcostm	0:d83f1c8ca282	2088
bcostm	0:d83f1c8ca282	2089	/**
bcostm	0:d83f1c8ca282	2090	* @}
bcostm	0:d83f1c8ca282	2091	*/
bcostm	0:d83f1c8ca282	2092
bcostm	0:d83f1c8ca282	2093	/**
bcostm	0:d83f1c8ca282	2094	* @}
bcostm	0:d83f1c8ca282	2095	*/
bcostm	0:d83f1c8ca282	2096
bcostm	0:d83f1c8ca282	2097	/********************** (C) COPYRIGHT STMicroelectronics *END OF FILE**/

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Type:	Library
Created:	26 Mar 2018
Imports:	19
Forks:	0
Commits:	3
Dependents:	4
Dependencies:	0
Followers:	401

Drivers/BSP/STM32L496G-Discovery/stm32l496g_discovery_audio.c@2:106c7b82e064, 2019-11-20 (annotated)

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