_flexio_i2s_edma_handle Struct Reference

FlexIO I2S DMA transfer handle, users should not touch the content of the handle. More...

#include <fsl_flexio_i2s_edma.h>

Data Fields
edma_handle_t *	dmaHandle
uint8_t	bytesPerFrame
uint8_t	nbytes
uint32_t	state
flexio_i2s_edma_callback_t	callback
void *	userData
edma_tcd_t	tcd [FLEXIO_I2S_XFER_QUEUE_SIZE+1U]
flexio_i2s_transfer_t	queue [FLEXIO_I2S_XFER_QUEUE_SIZE]
size_t	transferSize [FLEXIO_I2S_XFER_QUEUE_SIZE]
volatile uint8_t	queueUser
volatile uint8_t	queueDriver

Detailed Description

FlexIO I2S DMA transfer handle, users should not touch the content of the handle.

Field Documentation

bytesPerFrame

uint8_t _flexio_i2s_edma_handle::bytesPerFrame

Bytes in a frame

callback

flexio_i2s_edma_callback_t _flexio_i2s_edma_handle::callback

Callback for users while transfer finish or error occurred

dmaHandle

edma_handle_t* _flexio_i2s_edma_handle::dmaHandle

DMA handler for FlexIO I2S send

nbytes

uint8_t _flexio_i2s_edma_handle::nbytes

eDMA minor byte transfer count initially configured.

queue

flexio_i2s_transfer_t _flexio_i2s_edma_handle::queue[FLEXIO_I2S_XFER_QUEUE_SIZE]

Transfer queue storing queued transfer.

queueDriver

volatile uint8_t _flexio_i2s_edma_handle::queueDriver

Index for driver to get the transfer data and size

queueUser

volatile uint8_t _flexio_i2s_edma_handle::queueUser

Index for user to queue transfer.

state

uint32_t _flexio_i2s_edma_handle::state

Internal state for FlexIO I2S eDMA transfer

tcd

edma_tcd_t _flexio_i2s_edma_handle::tcd[FLEXIO_I2S_XFER_QUEUE_SIZE+1U]

TCD pool for eDMA transfer.

transferSize

size_t _flexio_i2s_edma_handle::transferSize[FLEXIO_I2S_XFER_QUEUE_SIZE]

Data bytes need to transfer

userData

void* _flexio_i2s_edma_handle::userData

User callback parameter

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

• bsps/arm/imxrt/mcux-sdk/drivers/flexio/fsl_flexio_i2s_edma.h