Collaboration diagram for STM32469I Discovery AUDIO IN Private functions:

Functions
__weak void	BSP_AUDIO_IN_ClockConfig (I2S_HandleTypeDef hi2s, void Params)
	Clock Config. More...

void	BSP_AUDIO_IN_DeInit (void)
	Deinit the audio IN peripherals. More...

__weak void	BSP_AUDIO_IN_Error_Callback (void)
	Audio IN Error callback function. More...

__weak void	BSP_AUDIO_IN_HalfTransfer_CallBack (void)
	Manages the DMA Half Transfer complete event. More...

uint8_t	BSP_AUDIO_IN_Init (uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
	Initializes wave recording. More...

__weak void	BSP_AUDIO_IN_MspDeInit (I2S_HandleTypeDef hi2s, void Params)
	DeInitializes BSP_AUDIO_IN MSP. More...

__weak void	BSP_AUDIO_IN_MspInit (I2S_HandleTypeDef hi2s, void Params)
	BSP AUDIO IN MSP Init. More...

uint8_t	BSP_AUDIO_IN_Pause (void)
	Pauses the audio file stream. More...

uint8_t	BSP_AUDIO_IN_PDMToPCM (uint16_t PDMBuf, uint16_t PCMBuf)
	Converts audio format from PDM to PCM. More...

uint8_t	BSP_AUDIO_IN_Record (uint16_t *pbuf, uint32_t size)
	Starts audio recording. More...

uint8_t	BSP_AUDIO_IN_Resume (void)
	Resumes the audio file stream. More...

uint8_t	BSP_AUDIO_IN_SetVolume (uint8_t Volume)
	Controls the audio in volume level. More...

uint8_t	BSP_AUDIO_IN_Stop (void)
	Stops audio recording. More...

__weak void	BSP_AUDIO_IN_TransferComplete_CallBack (void)
	User callback when record buffer is filled. More...

void	HAL_I2S_ErrorCallback (I2S_HandleTypeDef *hi2s)
	I2S error callbacks. More...

void	HAL_I2S_RxCpltCallback (I2S_HandleTypeDef *hi2s)
	Rx Transfer completed callbacks. More...

void	HAL_I2S_RxHalfCpltCallback (I2S_HandleTypeDef *hi2s)
	Rx Half Transfer completed callbacks. More...

static void	I2Sx_Init (uint32_t AudioFreq)
	Initializes the Audio Codec audio interface (I2S) More...

static void	PDMDecoder_Init (uint32_t AudioFreq, uint32_t ChnlNbrIn, uint32_t ChnlNbrOut)
	Initializes the PDM library. More...

static void	TIMx_IC_MspDeInit (TIM_HandleTypeDef *htim)
	Initializes the TIM INput Capture MSP. More...

static void	TIMx_IC_MspInit (TIM_HandleTypeDef *htim)
	Initializes the TIM INput Capture MSP. More...

Detailed Description

Function Documentation

◆ BSP_AUDIO_IN_ClockConfig()

__weak void BSP_AUDIO_IN_ClockConfig	(	I2S_HandleTypeDef *	hi2s,
		void *	Params
	)

Clock Config.

Parameters

hi2s	I2S handle
Params	: pointer on additional configuration parameters, can be NULL.

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

Definition at line 1114 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_DeInit()

void BSP_AUDIO_IN_DeInit ( void )

Deinit the audio IN peripherals.

Definition at line 1036 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_Error_Callback()

__weak void BSP_AUDIO_IN_Error_Callback ( void )

Audio IN Error callback function.

Definition at line 1148 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_HalfTransfer_CallBack()

__weak void BSP_AUDIO_IN_HalfTransfer_CallBack ( void )

Manages the DMA Half Transfer complete event.

Definition at line 1138 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_Init()

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

Initializes wave recording.

Note: This function assumes that the I2S input clock (through PLL_R in Devices RevA/Z and through dedicated PLLI2S_R in Devices RevB/Y) is already configured and ready to be used.

Parameters

AudioFreq	Audio frequency to be configured for the I2S peripheral.
BitRes	Audio frequency to be configured for the I2S peripheral.
ChnlNbr	Audio frequency to be configured for the I2S peripheral.

Return values

AUDIO_OK if correct communication, else wrong communication

Definition at line 928 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_MspDeInit()

__weak void BSP_AUDIO_IN_MspDeInit	(	I2S_HandleTypeDef *	hi2s,
		void *	Params
	)

DeInitializes BSP_AUDIO_IN MSP.

Parameters

hi2s	I2S handle
Params	: pointer on additional configuration parameters, can be NULL.

Definition at line 1238 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_MspInit()

__weak void BSP_AUDIO_IN_MspInit	(	I2S_HandleTypeDef *	hi2s,
		void *	Params
	)

BSP AUDIO IN MSP Init.

Parameters

hi2s	I2S handle
Params	: pointer on additional configuration parameters, can be NULL.

Definition at line 1159 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_Pause()

uint8_t BSP_AUDIO_IN_Pause ( void )

Pauses the audio file stream.

Return values

AUDIO_OK if correct communication, else wrong communication

Definition at line 996 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_PDMToPCM()

uint8_t BSP_AUDIO_IN_PDMToPCM	(	uint16_t *	PDMBuf,
		uint16_t *	PCMBuf
	)

Converts audio format from PDM to PCM.

Parameters

PDMBuf	Pointer to data PDM buffer
PCMBuf	Pointer to data PCM buffer

Return values

AUDIO_OK if correct communication, else wrong communication

Definition at line 1050 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_Record()

uint8_t BSP_AUDIO_IN_Record	(	uint16_t *	pbuf,
		uint32_t	size
	)

Starts audio recording.

Parameters

pbuf	Main buffer pointer for the recorded data storing
size	Current size of the recorded buffer

Return values

AUDIO_OK if correct communication, else wrong communication

Definition at line 959 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_Resume()

uint8_t BSP_AUDIO_IN_Resume ( void )

Resumes the audio file stream.

Return values

AUDIO_OK if correct communication, else wrong communication

Definition at line 1009 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_SetVolume()

uint8_t BSP_AUDIO_IN_SetVolume ( uint8_t Volume )

Controls the audio in volume level.

Parameters

Volume Volume level to be set in percentage from 0% to 100% (0 for Mute and 100 for Max volume level).

Return values

AUDIO_OK if correct communication, else wrong communication

Definition at line 1024 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_Stop()

uint8_t BSP_AUDIO_IN_Stop ( void )

Stops audio recording.

Return values

AUDIO_OK if correct communication, else wrong communication

Definition at line 976 of file stm32469i_discovery_audio.c.

◆ BSP_AUDIO_IN_TransferComplete_CallBack()

__weak void BSP_AUDIO_IN_TransferComplete_CallBack ( void )

User callback when record buffer is filled.

Definition at line 1128 of file stm32469i_discovery_audio.c.

◆ HAL_I2S_ErrorCallback()

void HAL_I2S_ErrorCallback ( I2S_HandleTypeDef * hi2s )

I2S error callbacks.

Parameters

hi2s	I2S handle

Definition at line 1100 of file stm32469i_discovery_audio.c.

◆ HAL_I2S_RxCpltCallback()

void HAL_I2S_RxCpltCallback ( I2S_HandleTypeDef * hi2s )

Rx Transfer completed callbacks.

Parameters

hi2s	I2S handle

Definition at line 1079 of file stm32469i_discovery_audio.c.

◆ HAL_I2S_RxHalfCpltCallback()

void HAL_I2S_RxHalfCpltCallback ( I2S_HandleTypeDef * hi2s )

Rx Half Transfer completed callbacks.

Parameters

hi2s	I2S handle

Definition at line 1089 of file stm32469i_discovery_audio.c.

◆ I2Sx_Init()

static void I2Sx_Init ( uint32_t AudioFreq )

static

Initializes the Audio Codec audio interface (I2S)

Note: This function assumes that the I2S input clock (through dedicated PLLI2S_R) is already configured and ready to be used.

Parameters

AudioFreq Audio frequency to be configured for the I2S peripheral.

Definition at line 1309 of file stm32469i_discovery_audio.c.

◆ PDMDecoder_Init()

static void PDMDecoder_Init	(	uint32_t	AudioFreq,
		uint32_t	ChnlNbrIn,
		uint32_t	ChnlNbrOut
	)

static

Initializes the PDM library.

Parameters

AudioFreq	Audio sampling frequency
ChnlNbrIn	Number of input audio channels in the PDM buffer
ChnlNbrOut	Number of desired output audio channels in the resulting PCM buffer Number of audio channels (1: mono; 2: stereo)

Definition at line 1278 of file stm32469i_discovery_audio.c.

◆ TIMx_IC_MspDeInit()

static void TIMx_IC_MspDeInit ( TIM_HandleTypeDef * htim )

static

Initializes the TIM INput Capture MSP.

Parameters

htim	TIM handle

Definition at line 1385 of file stm32469i_discovery_audio.c.

◆ TIMx_IC_MspInit()

static void TIMx_IC_MspInit ( TIM_HandleTypeDef * htim )

static

Initializes the TIM INput Capture MSP.

Parameters

htim	TIM handle

Definition at line 1354 of file stm32469i_discovery_audio.c.

Functions

Detailed Description

Function Documentation

◆ BSP_AUDIO_IN_ClockConfig()

◆ BSP_AUDIO_IN_DeInit()

◆ BSP_AUDIO_IN_Error_Callback()

◆ BSP_AUDIO_IN_HalfTransfer_CallBack()

◆ BSP_AUDIO_IN_Init()

◆ BSP_AUDIO_IN_MspDeInit()

◆ BSP_AUDIO_IN_MspInit()

◆ BSP_AUDIO_IN_Pause()

◆ BSP_AUDIO_IN_PDMToPCM()

◆ BSP_AUDIO_IN_Record()

◆ BSP_AUDIO_IN_Resume()

◆ BSP_AUDIO_IN_SetVolume()

◆ BSP_AUDIO_IN_Stop()

◆ BSP_AUDIO_IN_TransferComplete_CallBack()

◆ HAL_I2S_ErrorCallback()

◆ HAL_I2S_RxCpltCallback()

◆ HAL_I2S_RxHalfCpltCallback()

◆ I2Sx_Init()

◆ PDMDecoder_Init()

◆ TIMx_IC_MspDeInit()

◆ TIMx_IC_MspInit()