Senior Design: Sound Monitor / FINAL_AUDIO_RECORD

AudioRecord and FFT/MSE comparison. Call AudioRecord_demo for control record and AudioSample for subsequent recordings.

Dependencies:   CMSIS_DSP_401 STM32L4xx_HAL_Driver

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Private Functions
Functions

Private Functions
[STM32L476G-NUCLEO AUDIO]

Functions

static uint8_t AUDIO_DFSDMx_Init (uint32_t AudioFreq)
 Initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).
static uint8_t AUDIO_DFSDMx_DeInit (void)
 De-initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).
static uint8_t AUDIO_SAIPLLConfig (uint32_t Frequency)
 Configures the SAI PLL clock according to the required audio frequency.
void HAL_SAI_MspInit (SAI_HandleTypeDef *hsai)
 Initializes the Audio Codec audio interface (SAI).
void HAL_SAI_MspDeInit (SAI_HandleTypeDef *hsai)
 SAI MSP De-init.
void HAL_DFSDM_ChannelMspInit (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
 Initializes the DFSDM channel MSP.
void HAL_DFSDM_ChannelMspDeInit (DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
 De-initializes the DFSDM channel MSP.
void HAL_DFSDM_FilterMspInit (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
 Initializes the DFSDM filter MSP.
void HAL_DFSDM_FilterMspDeInit (DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
 De-initializes the DFSDM filter MSP.

Function Documentation

static uint8_t AUDIO_DFSDMx_DeInit ( void   ) [static]

De-initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).

Return values:
BSPAUDIO status

Definition at line 1217 of file stm32l4xx_nucleo_audio.c.

static uint8_t AUDIO_DFSDMx_Init ( uint32_t  AudioFreq ) [static]

Initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).

Parameters:
AudioFreq,:Audio frequency to be used to set correctly the DFSDM peripheral.
Return values:
BSPAUDIO status

Definition at line 1154 of file stm32l4xx_nucleo_audio.c.

static uint8_t AUDIO_SAIPLLConfig ( uint32_t  Frequency ) [static]

Configures the SAI PLL clock according to the required audio frequency.

Parameters:
Frequency,:Audio frequency.
Return values:
BSPAUDIO status
Note:
The SAI PLL input clock must be configured in the user application. The SAI PLL configuration done within this function assumes that the SAI PLL input clock runs at 8 MHz.

Definition at line 1360 of file stm32l4xx_nucleo_audio.c.

void HAL_DFSDM_ChannelMspDeInit ( DFSDM_Channel_HandleTypeDef *  hdfsdm_channel )

De-initializes the DFSDM channel MSP.

Parameters:
hdfsdm_channel: DFSDM channel handle.
Return values:
None

Definition at line 1276 of file stm32l4xx_nucleo_audio.c.

void HAL_DFSDM_ChannelMspInit ( DFSDM_Channel_HandleTypeDef *  hdfsdm_channel )

Initializes the DFSDM channel MSP.

Parameters:
hdfsdm_channel: DFSDM channel handle.
Return values:
None

Definition at line 1252 of file stm32l4xx_nucleo_audio.c.

void HAL_DFSDM_FilterMspDeInit ( DFSDM_Filter_HandleTypeDef *  hdfsdm_filter )

De-initializes the DFSDM filter MSP.

Parameters:
hdfsdm_filter: DFSDM filter handle.
Return values:
None

Definition at line 1340 of file stm32l4xx_nucleo_audio.c.

void HAL_DFSDM_FilterMspInit ( DFSDM_Filter_HandleTypeDef *  hdfsdm_filter )

Initializes the DFSDM filter MSP.

Parameters:
hdfsdm_filter: DFSDM filter handle.
Return values:
None

Definition at line 1301 of file stm32l4xx_nucleo_audio.c.

void HAL_SAI_MspDeInit ( SAI_HandleTypeDef *  hsai )

SAI MSP De-init.

Parameters:
hsai: pointer to a SAI_HandleTypeDef structure
Return values:
None

Definition at line 1106 of file stm32l4xx_nucleo_audio.c.

void HAL_SAI_MspInit ( SAI_HandleTypeDef *  hsai )

Initializes the Audio Codec audio interface (SAI).

Parameters:
AudioFreq,:Audio frequency to be configured for the SAI peripheral.
Note:
The default SlotActive configuration is set to CODEC_AUDIOFRAME_SLOT_0123 and user can update this configuration using
Return values:
BSPAUDIO status De-initializes the Audio Codec audio interface (SAI).
BSPAUDIO status SAI MSP Init
Parameters:
hsai: pointer to a SAI_HandleTypeDef structure
Return values:
None

Definition at line 1051 of file stm32l4xx_nucleo_audio.c.

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