STM32446E_EVAL BSP User Manual: stm32446e_eval_audio.c File Reference

STM32446E EVAL BSP Drivers

stm32446e_eval_audio.c File Reference

This file provides the Audio driver for the STM32446E-EVAL evaluation board. More...

Go to the source code of this file.

Functions

static void SAIx_Init (uint32_t AudioFreq)
 Initializes the Audio Codec audio interface (SAI).
static void SAIx_DeInit (void)
 Deinitializes the Audio Codec audio interface (SAI).
static void I2Sx_Init (uint32_t AudioFreq)
 Initializes the Audio Codec audio interface (I2S)
static void I2Sx_DeInit (void)
 Deinitializes the Audio Codec audio interface (I2S).
static void TIMx_IC_MspInit (TIM_HandleTypeDef *htim)
 Initializes the TIM INput Capture MSP.
static void TIMx_IC_MspDeInit (TIM_HandleTypeDef *htim)
 Initializes the TIM INput Capture MSP.
static void TIMx_Init (void)
 Configure TIM as a clock divider by 2.
static void TIMx_DeInit (void)
 Configure TIM as a clock divider by 2.
static void PDMDecoder_Init (uint32_t AudioFreq, uint32_t ChnlNbr)
 Initializes the PDM library.
uint8_t BSP_AUDIO_OUT_Init (uint16_t OutputDevice, uint8_t Volume, uint32_t AudioFreq)
 Configures the audio peripherals.
uint8_t BSP_AUDIO_OUT_Play (uint16_t *pBuffer, uint32_t Size)
 Starts playing audio stream from a data buffer for a determined size.
void BSP_AUDIO_OUT_ChangeBuffer (uint16_t *pData, uint16_t Size)
 Sends n-Bytes on the SAI interface.
uint8_t BSP_AUDIO_OUT_Pause (void)
 This function Pauses the audio file stream.
uint8_t BSP_AUDIO_OUT_Resume (void)
 This function Resumes the audio file stream.
uint8_t BSP_AUDIO_OUT_Stop (uint32_t Option)
 Stops audio playing and Power down the Audio Codec.
uint8_t BSP_AUDIO_OUT_SetVolume (uint8_t Volume)
 Controls the current audio volume level.
uint8_t BSP_AUDIO_OUT_SetMute (uint32_t Cmd)
 Enables or disables the MUTE mode by software.
uint8_t BSP_AUDIO_OUT_SetOutputMode (uint8_t Output)
 Switch dynamically (while audio file is played) the output target (speaker or headphone).
void BSP_AUDIO_OUT_SetFrequency (uint32_t AudioFreq)
 Updates the audio frequency.
void BSP_AUDIO_OUT_SetAudioFrameSlot (uint32_t AudioFrameSlot)
 Updates the Audio frame slot configuration.
void BSP_AUDIO_OUT_DeInit (void)
 Deinit the audio peripherals.
void HAL_SAI_TxCpltCallback (SAI_HandleTypeDef *hsai)
 Tx Transfer completed callbacks.
void HAL_SAI_TxHalfCpltCallback (SAI_HandleTypeDef *hsai)
 Tx Half Transfer completed callbacks.
void HAL_SAI_ErrorCallback (SAI_HandleTypeDef *hsai)
 SAI error callbacks.
__weak void BSP_AUDIO_OUT_TransferComplete_CallBack (void)
 Manages the DMA full Transfer complete event.
__weak void BSP_AUDIO_OUT_HalfTransfer_CallBack (void)
 Manages the DMA Half Transfer complete event.
__weak void BSP_AUDIO_OUT_Error_CallBack (void)
 Manages the DMA FIFO error event.
__weak void BSP_AUDIO_OUT_MspInit (SAI_HandleTypeDef *hsai, void *Params)
 Initializes BSP_AUDIO_OUT MSP.
__weak void BSP_AUDIO_OUT_MspDeInit (SAI_HandleTypeDef *hsai, void *Params)
 Deinitializes SAI MSP.
__weak void BSP_AUDIO_OUT_ClockConfig (SAI_HandleTypeDef *hsai, uint32_t AudioFreq, void *Params)
 Clock Config.
uint8_t BSP_AUDIO_IN_Init (uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
 Initializes wave recording.
uint8_t BSP_AUDIO_IN_Record (uint16_t *pbuf, uint32_t size)
 Starts audio recording.
uint8_t BSP_AUDIO_IN_Stop (void)
 Stops audio recording.
uint8_t BSP_AUDIO_IN_Pause (void)
 Pauses the audio file stream.
uint8_t BSP_AUDIO_IN_Resume (void)
 Resumes the audio file stream.
uint8_t BSP_AUDIO_IN_SetVolume (uint8_t Volume)
 Controls the audio in volume level.
void BSP_AUDIO_IN_DeInit (void)
 Deinit the audio IN peripherals.
uint8_t BSP_AUDIO_IN_PDMToPCM (uint16_t *PDMBuf, uint16_t *PCMBuf)
 Converts audio format from PDM to PCM.
void HAL_I2S_RxCpltCallback (I2S_HandleTypeDef *hi2s)
 Rx Transfer completed callbacks.
void HAL_I2S_RxHalfCpltCallback (I2S_HandleTypeDef *hi2s)
 Rx Half Transfer completed callbacks.
void HAL_I2S_ErrorCallback (I2S_HandleTypeDef *hi2s)
 I2S error callbacks.
__weak void BSP_AUDIO_IN_TransferComplete_CallBack (void)
 User callback when record buffer is filled.
__weak void BSP_AUDIO_IN_HalfTransfer_CallBack (void)
 Manages the DMA Half Transfer complete event.
__weak void BSP_AUDIO_IN_Error_Callback (void)
 Audio IN Error callback function.
__weak void BSP_AUDIO_IN_MspInit (I2S_HandleTypeDef *hi2s, void *Params)
 Initializes BSP_AUDIO_IN MSP.
__weak void BSP_AUDIO_IN_MspDeInit (I2S_HandleTypeDef *hi2s, void *Params)
 DeInitializes BSP_AUDIO_IN MSP.

Variables

AUDIO_DrvTypeDef * audio_drv
SAI_HandleTypeDef haudio_out_sai
I2S_HandleTypeDef haudio_in_i2s
TIM_HandleTypeDef haudio_tim
PDMFilter_InitStruct Filter [2]
uint8_t Channel_Demux [128]
uint16_t __IO AudioInVolume = DEFAULT_AUDIO_IN_VOLUME

Detailed Description

This file provides the Audio driver for the STM32446E-EVAL evaluation board.

Author:
MCD Application Team
Version:
V1.1.1
Date:
13-January-2016
Attention:

© COPYRIGHT(c) 2015 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 stm32446e_eval_audio.c.

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