SensorTile_audio_in.c File Reference

This file provides the Audio In driver for the Sensor Tile board. More...

#include "stm32l4xx_hal.h" #include "SensorTile_audio_in.h"

Go to the source code of this file.

Macros
#define	SaturaLH(N, L, H)   (((N)<(L))?(L):(((N)>(H))?(H):(N)))
#define	OverSampling(__FREQUENCY__)
#define	ClockDivider(__FREQUENCY__)

Functions
static void	DFSDMx_FilterMspInit (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	Initializes the DFSDM filter MSP. More...
static uint8_t	DFSDMx_Init (uint32_t AudioFreq, uint32_t ChnlNbr)
	Initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM). More...
static uint8_t	DFSDMx_DeInit (void)
	De-initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM). More...
static void	DFSDMx_ChannelMspDeInit (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
	DeInitializes the DFSDM channel MSP. More...
static void	DFSDMx_FilterMspDeInit (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	DeInitializes the DFSDM filter MSP. More...
uint8_t	BSP_AUDIO_IN_Init (uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
	Initializes audio acquisition. More...
uint8_t	BSP_AUDIO_IN_DeInit (void)
	DeInitializes the audio peripheral. More...
__weak uint8_t	BSP_AUDIO_IN_ClockConfig (uint32_t AudioFreq, void *Params)
	Clock Config. More...
uint8_t	BSP_AUDIO_IN_Record (uint16_t *pbuf, uint32_t size)
	Starts audio recording. More...
uint8_t	BSP_AUDIO_IN_Stop (void)
	Stops audio recording. More...
uint8_t	BSP_AUDIO_IN_Pause (void)
	Pauses the audio file stream. 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...
__weak void	BSP_AUDIO_IN_Error_Callback (void)
	Audio IN Error callback function. More...
void	HAL_DFSDM_FilterRegConvCpltCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	Regular conversion complete callback. More...
void	HAL_DFSDM_FilterRegConvHalfCpltCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
	Half regular conversion complete callback. More...
__weak void	BSP_AUDIO_IN_TransferComplete_CallBack (void)
	User callback when record buffer is filled. More...
__weak void	BSP_AUDIO_IN_HalfTransfer_CallBack (void)
	User callback when record buffer is half filled. More...

Variables
static SENSORTILE_AudioIn_HandlerTypeDef	SENSORTILE_AudioIn_Handler
DFSDM_Channel_HandleTypeDef	haudio_in_dfsdmchannel [MAX_CH_NUMBER]
DFSDM_Filter_HandleTypeDef	haudio_in_dfsdmfilter [MAX_CH_NUMBER]
DMA_HandleTypeDef	hdma_dfsdmReg_FLT [MAX_CH_NUMBER]
int32_t	RecBuff [MAX_CH_NUMBER][MAX_SAMPLES_PER_CH]
static uint16_t	AudioInVolume = DEFAULT_AUDIO_IN_VOLUME

Detailed Description

This file provides the Audio In driver for the Sensor Tile board.

Author

Central Labs

Version

V1.3.1

Date

27-Apr-2017

Attention

© COPYRIGHT(c) 2014 STMicroelectronics

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of STMicroelectronics nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Definition in file SensorTile_audio_in.c.