Functions
uint8_t	BSP_AUDIO_IN_Init (uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
	Initialize wave recording.
uint8_t	BSP_AUDIO_IN_InitEx (uint16_t InputDevice, uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
	Initialize wave recording.
uint8_t	BSP_AUDIO_IN_AllocScratch (int32_t *pScratch, uint32_t size)
	Allocate channel buffer scratch.
uint8_t	BSP_AUDIO_IN_GetChannelNumber (void)
	Return audio in channel number.
void	BSP_AUDIO_IN_DeInit (void)
	Deinit the audio IN peripherals.
uint8_t	BSP_AUDIO_IN_Record (uint16_t *pData, uint32_t Size)
	Start audio recording.
uint8_t	BSP_AUDIO_IN_Stop (void)
	Stop audio recording.
uint8_t	BSP_AUDIO_IN_Pause (void)
	Pause the audio file stream.
uint8_t	BSP_AUDIO_IN_Resume (void)
	Resume the audio file stream.
void	BSP_AUDIO_IN_TransferComplete_CallBack (void)
	User callback when record buffer is filled.
void	BSP_AUDIO_IN_HalfTransfer_CallBack (void)
	Manages the DMA Half Transfer complete event.
void	BSP_AUDIO_IN_Error_CallBack (void)
	Audio IN Error callback function.
void	BSP_AUDIO_IN_ClockConfig (DFSDM_Filter_HandleTypeDef hdfsdm_filter, uint32_t AudioFreq, void Params)
	Clock Config.
void	BSP_AUDIO_IN_MspInit (void)
	Initialize BSP_AUDIO_IN MSP.
void	BSP_AUDIO_IN_MspDeInit (void)
	DeInitialize BSP_AUDIO_IN MSP.

Function Documentation

uint8_t BSP_AUDIO_IN_AllocScratch	(	int32_t *	pScratch,
		uint32_t	size
	)

Allocate channel buffer scratch.

Parameters:

pScratch	: pointer to scratch tables.
size	of scratch buffer

Definition at line 1194 of file stm32f769i_discovery_audio.c.

References AUDIO_OK, AudioIn_ChannelNumber, pScratchBuff, and ScratchSize.

void BSP_AUDIO_IN_ClockConfig	(	DFSDM_Filter_HandleTypeDef *	hdfsdm_filter,
		uint32_t	AudioFreq,
		void *	Params
	)

Clock Config.

Parameters:

hdfsdm_filter,:	might be required to set audio peripheral predivider if any.
AudioFreq,:	Audio frequency used to play the audio stream.
Params

Note:: This API is called by BSP_AUDIO_IN_Init() Being __weak it can be overwritten by the application

Return values:

None

Definition at line 1680 of file stm32f769i_discovery_audio.c.

Referenced by BSP_AUDIO_IN_InitEx().

void BSP_AUDIO_IN_DeInit ( void )

Deinit the audio IN peripherals.

Return values:

None

Definition at line 1410 of file stm32f769i_discovery_audio.c.

References AudioIn_Device, BSP_AUDIO_IN_MspDeInit(), DFSDMx_DeInit(), INPUT_DEVICE_DIGITAL_MIC, and SAIx_In_DeInit().

void BSP_AUDIO_IN_Error_CallBack ( void )

Audio IN Error callback function.

Return values:

None

Definition at line 1627 of file stm32f769i_discovery_audio.c.

Referenced by HAL_SAI_ErrorCallback().

uint8_t BSP_AUDIO_IN_GetChannelNumber ( void )

Return audio in channel number.

Return values:

Number of channel

Definition at line 1213 of file stm32f769i_discovery_audio.c.

References AudioIn_ChannelNumber.

void BSP_AUDIO_IN_HalfTransfer_CallBack ( void )

Manages the DMA Half Transfer complete event.

Return values:

None

Definition at line 1616 of file stm32f769i_discovery_audio.c.

Referenced by HAL_DFSDM_FilterRegConvCpltCallback(), HAL_DFSDM_FilterRegConvHalfCpltCallback(), and HAL_SAI_RxHalfCpltCallback().

uint8_t BSP_AUDIO_IN_Init	(	uint32_t	AudioFreq,
		uint32_t	BitRes,
		uint32_t	ChnlNbr
	)

Initialize wave recording.

Parameters:

AudioFreq,:	Audio frequency to be configured for the DFSDM peripheral.
BitRes,:	Audio frequency to be configured for the DFSDM peripheral.
ChnlNbr,:	Audio frequency to be configured for the DFSDM peripheral.

Return values:

AUDIO_OK if correct communication, else wrong communication

Definition at line 1117 of file stm32f769i_discovery_audio.c.

References BSP_AUDIO_IN_InitEx(), and INPUT_DEVICE_DIGITAL_MIC.

uint8_t BSP_AUDIO_IN_InitEx	(	uint16_t	InputDevice,
		uint32_t	AudioFreq,
		uint32_t	BitRes,
		uint32_t	ChnlNbr
	)

Initialize wave recording.

Parameters:

InputDevice,:	INPUT_DEVICE_DIGITAL_MIC or INPUT_DEVICE_ANALOG_MIC.
AudioFreq,:	Audio frequency to be configured.
BitRes,:	Audio bit resolution to be configured..
ChnlNbr,:	Number of channel to be configured.

Return values:

AUDIO_OK if correct communication, else wrong communication

Definition at line 1130 of file stm32f769i_discovery_audio.c.

References audio_drv, AUDIO_ERROR, AUDIO_I2C_ADDRESS, AUDIO_IN_SAIx, AUDIO_OK, AudioIn_ChannelNumber, AudioIn_Device, BSP_AUDIO_IN_ClockConfig(), BSP_AUDIO_IN_MspInit(), BSP_AUDIO_OUT_ClockConfig(), BSP_AUDIO_OUT_MspInit(), DFSDMx_Init(), haudio_in_sai, hAudioInTopLeftFilter, INPUT_DEVICE_DIGITAL_MIC, SAIx_In_DeInit(), and SAIx_In_Init().