SF32LB52 PDM microphone

Microphone implementation for the SF32LB52 PDM peripheral. More...

Data Structures
struct	MicDevice
	nRF5 PDM microphone device. More...

Functions
void	pdm1_data_handler (MicDevice *this)
	PDM interrupt handler.
void	pdm1_l_dma_handler (MicDevice *this)
	PDM DMA interrupt handler.

Detailed Description

Microphone implementation for the SF32LB52 PDM peripheral.

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Data Structure Documentation

MicDevice

struct MicDevice

nRF5 PDM microphone device.

SF32LB52 PDM microphone device.

QEMU microphone device.

Data Fields
uint32_t	channel_depth	PDM channel depth in bits.
uint32_t	channels	Number of channels, 1 or 2. Number of channels.
Pinmux	clk_gpio	PDM clock pin.
uint32_t	clk_pin	PDM clock pin.
Pinmux	data_gpio	PDM data pin.
uint32_t	data_pin	PDM data pin.
uint16_t	default_volume	Default volume scalar (max 128); not used by the driver.
IRQn_Type	pdm_dma_irq	PDM DMA interrupt.
const nrfx_pdm_t	pdm_instance	PDM instance.
PDM_TypeDef *	pdm_instance	PDM instance.
IRQn_Type	pdm_irq	PDM interrupt.
uint32_t	sample_rate	PDM sample rate in Hz.
MicDeviceState *	state	Driver runtime state.

Function Documentation

pdm1_data_handler()

void pdm1_data_handler ( MicDevice *  this )

extern

PDM interrupt handler.

Parameters

this	Microphone device.

pdm1_l_dma_handler()

void pdm1_l_dma_handler ( MicDevice *  this )

extern

PDM DMA interrupt handler.

Parameters

this	Microphone device.