AudioRecord and FFT/MSE comparison. Call AudioRecord_demo for control record and AudioSample for subsequent recordings.
Dependencies: CMSIS_DSP_401 STM32L4xx_HAL_Driver
Fork of OneHopeOnePrayer by
STM32L476G_EVAL_AUDIO_Exported_Functions
[STM32L476G-NUCLEO AUDIO]
Functions | |
uint8_t | BSP_AUDIO_IN_Init (uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr) |
Initializes micropone related peripherals. | |
uint8_t | BSP_AUDIO_IN_DeInit (void) |
De-Initializes microphone related peripherals. | |
uint8_t | BSP_AUDIO_IN_Record (uint16_t *pbuf, uint32_t size) |
Starts audio recording. | |
uint8_t | BSP_AUDIO_IN_SetFrequency (uint32_t AudioFreq) |
Updates the audio frequency. | |
void | HAL_DFSDM_FilterRegConvCpltCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter) |
Regular conversion complete callback. | |
void | HAL_DFSDM_FilterRegConvHalfCpltCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter) |
Half regular conversion complete callback. | |
void | HAL_DFSDM_FilterErrorCallback (DFSDM_Filter_HandleTypeDef *hdfsdm_filter) |
Error callback. | |
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. | |
void | BSP_AUDIO_IN_RegisterCallbacks (Audio_CallbackTypeDef ErrorCallback, Audio_CallbackTypeDef HalfTransferCallback, Audio_CallbackTypeDef TransferCompleteCallback) |
register user callback functions |
Function Documentation
uint8_t BSP_AUDIO_IN_DeInit | ( | void | ) |
De-Initializes microphone related peripherals.
- Return values:
-
BSP AUDIO status
Definition at line 737 of file stm32l4xx_nucleo_audio.c.
uint8_t BSP_AUDIO_IN_Init | ( | uint32_t | AudioFreq, |
uint32_t | BitRes, | ||
uint32_t | ChnlNbr | ||
) |
Initializes micropone related peripherals.
- Note:
- This function assumes that the SAI input clock (through PLL_M) is already configured and ready to be used.
- Parameters:
-
AudioFreq,: Audio frequency to be configured for the SAI peripheral. BitRes,: Audio frequency to be configured for the SAI peripheral. ChnlNbr,: Audio frequency to be configured for the SAI peripheral.
- Return values:
-
BSP AUDIO status
Definition at line 707 of file stm32l4xx_nucleo_audio.c.
uint8_t BSP_AUDIO_IN_Pause | ( | void | ) |
Pauses the audio file stream.
- Return values:
-
BSP AUDIO status
Definition at line 902 of file stm32l4xx_nucleo_audio.c.
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
- Note:
- The Right channel is start at first with synchro on start of Left channel
- Return values:
-
BSP AUDIO status
Definition at line 758 of file stm32l4xx_nucleo_audio.c.
void BSP_AUDIO_IN_RegisterCallbacks | ( | Audio_CallbackTypeDef | ErrorCallback, |
Audio_CallbackTypeDef | HalfTransferCallback, | ||
Audio_CallbackTypeDef | TransferCompleteCallback | ||
) |
register user callback functions
- Parameters:
-
ErrorCallback,: pointer to the error callback function HalfTransferCallback,: pointer to the half transfer callback function TransferCompleteCallback,: pointer to the transfer complete callback function
- Return values:
-
None
Definition at line 937 of file stm32l4xx_nucleo_audio.c.
uint8_t BSP_AUDIO_IN_Resume | ( | void | ) |
Resumes the audio file stream.
- Return values:
-
BSP AUDIO status
Definition at line 917 of file stm32l4xx_nucleo_audio.c.
uint8_t BSP_AUDIO_IN_SetFrequency | ( | uint32_t | AudioFreq ) |
Updates the audio frequency.
- Parameters:
-
AudioFreq,: Audio frequency used to record the audio stream.
- Note:
- This API should be called after the BSP_AUDIO_IN_Init() to adjust the audio frequency.
- Return values:
-
BSP AUDIO status
Definition at line 792 of file stm32l4xx_nucleo_audio.c.
uint8_t BSP_AUDIO_IN_Stop | ( | void | ) |
Stops audio recording.
- Return values:
-
BSP AUDIO status
Definition at line 880 of file stm32l4xx_nucleo_audio.c.
void HAL_DFSDM_FilterErrorCallback | ( | DFSDM_Filter_HandleTypeDef * | hdfsdm_filter ) |
Error callback.
- Parameters:
-
hdfsdm_filter : DFSDM filter handle.
- Return values:
-
None
Definition at line 867 of file stm32l4xx_nucleo_audio.c.
void HAL_DFSDM_FilterRegConvCpltCallback | ( | DFSDM_Filter_HandleTypeDef * | hdfsdm_filter ) |
Regular conversion complete callback.
- Note:
- In interrupt mode, user has to read conversion value in this function using HAL_DFSDM_FilterGetRegularValue.
- Parameters:
-
hdfsdm_filter : DFSDM filter handle.
- Return values:
-
None
Definition at line 822 of file stm32l4xx_nucleo_audio.c.
void HAL_DFSDM_FilterRegConvHalfCpltCallback | ( | DFSDM_Filter_HandleTypeDef * | hdfsdm_filter ) |
Half regular conversion complete callback.
- Parameters:
-
hdfsdm_filter : DFSDM filter handle.
- Return values:
-
None
Definition at line 844 of file stm32l4xx_nucleo_audio.c.
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