ra8_audio_source_pdm_cfg_t Struct Reference

Complete PDM source initialization and capture policy. More...

#include <ra8_audio_source_pdm.h>

Collaboration diagram for ra8_audio_source_pdm_cfg_t:

Data Fields
ra8_pdm_channel_cfg_t	pdm
	HAL filter configuration.
uint32_t	sample_rate_hz
	Decimated PCM sample rate.
uint32_t	samples_per_frame
	Samples returned per capture.
uint32_t	settle_ms
	Mic/filter startup delay.
uint32_t	discard_samples
	Startup samples to discard.
uint32_t	poll_attempts
	Empty-FIFO retry bound/frame.
uint8_t	channel
	ra8_pdm_channel_t selector.
uint8_t	valid_bits
	Significant bits in PCM-S32LE.
uint8_t	irq_priority
	Async-stream NVIC priority.

Detailed Description

Complete PDM source initialization and capture policy.

Definition at line 25 of file ra8_audio_source_pdm.h.

Field Documentation

channel

uint8_t ra8_audio_source_pdm_cfg_t::channel

ra8_pdm_channel_t selector.

Definition at line 32 of file ra8_audio_source_pdm.h.

Referenced by internal_pdm_prepare_hardware(), internal_pdm_validate_cfg(), and ra8_audio_source_pdm_init().

discard_samples

uint32_t ra8_audio_source_pdm_cfg_t::discard_samples

Startup samples to discard.

Definition at line 30 of file ra8_audio_source_pdm.h.

Referenced by internal_pdm_prepare_hardware().

irq_priority

uint8_t ra8_audio_source_pdm_cfg_t::irq_priority

Async-stream NVIC priority.

Definition at line 34 of file ra8_audio_source_pdm.h.

Referenced by ra8_audio_source_pdm_init().

pdm

ra8_pdm_channel_cfg_t ra8_audio_source_pdm_cfg_t::pdm

HAL filter configuration.

Definition at line 26 of file ra8_audio_source_pdm.h.

Referenced by internal_pdm_prepare_hardware().

poll_attempts

uint32_t ra8_audio_source_pdm_cfg_t::poll_attempts

Empty-FIFO retry bound/frame.

Definition at line 31 of file ra8_audio_source_pdm.h.

Referenced by internal_pdm_prepare_hardware(), internal_pdm_validate_cfg(), and ra8_audio_source_pdm_init().

sample_rate_hz

uint32_t ra8_audio_source_pdm_cfg_t::sample_rate_hz

Decimated PCM sample rate.

Definition at line 27 of file ra8_audio_source_pdm.h.

Referenced by internal_pdm_validate_cfg(), and ra8_audio_source_pdm_init().

samples_per_frame

uint32_t ra8_audio_source_pdm_cfg_t::samples_per_frame

Samples returned per capture.

Definition at line 28 of file ra8_audio_source_pdm.h.

Referenced by internal_pdm_validate_cfg(), and ra8_audio_source_pdm_init().

settle_ms

uint32_t ra8_audio_source_pdm_cfg_t::settle_ms

Mic/filter startup delay.

Definition at line 29 of file ra8_audio_source_pdm.h.

Referenced by internal_pdm_prepare_hardware().

valid_bits

uint8_t ra8_audio_source_pdm_cfg_t::valid_bits

Significant bits in PCM-S32LE.

Definition at line 33 of file ra8_audio_source_pdm.h.

Referenced by internal_pdm_validate_cfg(), and ra8_audio_source_pdm_init().

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The documentation for this struct was generated from the following file:

• libs/ra8_audio/inc/ra8_audio_source_pdm.h