Data Structures
struct	_flexio_i2s_dma_handle
	FlexIO I2S DMA transfer handle, users should not touch the content of the handle. More...

Driver version
typedef struct _flexio_i2s_dma_handle	flexio_i2s_dma_handle_t

typedef void(*	flexio_i2s_dma_callback_t) (FLEXIO_I2S_Type base, flexio_i2s_dma_handle_t handle, status_t status, void *userData)
	FlexIO I2S DMA transfer callback function for finish and error.

#define	FSL_FLEXIO_I2S_DMA_DRIVER_VERSION (MAKE_VERSION(2, 1, 7))
	FlexIO I2S DMA driver version 2.1.7.

DMA Transactional
void	FLEXIO_I2S_TransferTxCreateHandleDMA (FLEXIO_I2S_Type base, flexio_i2s_dma_handle_t handle, flexio_i2s_dma_callback_t callback, void userData, dma_handle_t dmaHandle)
	Initializes the FlexIO I2S DMA handle.

void	FLEXIO_I2S_TransferRxCreateHandleDMA (FLEXIO_I2S_Type base, flexio_i2s_dma_handle_t handle, flexio_i2s_dma_callback_t callback, void userData, dma_handle_t dmaHandle)
	Initializes the FlexIO I2S Rx DMA handle.

void	FLEXIO_I2S_TransferSetFormatDMA (FLEXIO_I2S_Type base, flexio_i2s_dma_handle_t handle, flexio_i2s_format_t *format, uint32_t srcClock_Hz)
	Configures the FlexIO I2S Tx audio format.

status_t	FLEXIO_I2S_TransferSendDMA (FLEXIO_I2S_Type base, flexio_i2s_dma_handle_t handle, flexio_i2s_transfer_t *xfer)
	Performs a non-blocking FlexIO I2S transfer using DMA.

status_t	FLEXIO_I2S_TransferReceiveDMA (FLEXIO_I2S_Type base, flexio_i2s_dma_handle_t handle, flexio_i2s_transfer_t *xfer)
	Performs a non-blocking FlexIO I2S receive using DMA.

void	FLEXIO_I2S_TransferAbortSendDMA (FLEXIO_I2S_Type base, flexio_i2s_dma_handle_t handle)
	Aborts a FlexIO I2S transfer using DMA.

void	FLEXIO_I2S_TransferAbortReceiveDMA (FLEXIO_I2S_Type base, flexio_i2s_dma_handle_t handle)
	Aborts a FlexIO I2S receive using DMA.

status_t	FLEXIO_I2S_TransferGetSendCountDMA (FLEXIO_I2S_Type base, flexio_i2s_dma_handle_t handle, size_t *count)
	Gets the remaining bytes to be sent.

status_t	FLEXIO_I2S_TransferGetReceiveCountDMA (FLEXIO_I2S_Type base, flexio_i2s_dma_handle_t handle, size_t *count)
	Gets the remaining bytes to be received.

Detailed Description

Function Documentation

◆ FLEXIO_I2S_TransferAbortReceiveDMA()

void FLEXIO_I2S_TransferAbortReceiveDMA	(	FLEXIO_I2S_Type *	base,
		flexio_i2s_dma_handle_t *	handle
	)

Aborts a FlexIO I2S receive using DMA.

Parameters

base	FlexIO I2S peripheral base address.
handle	FlexIO I2S DMA handle pointer.

◆ FLEXIO_I2S_TransferAbortSendDMA()

void FLEXIO_I2S_TransferAbortSendDMA	(	FLEXIO_I2S_Type *	base,
		flexio_i2s_dma_handle_t *	handle
	)

Aborts a FlexIO I2S transfer using DMA.

Parameters

base	FlexIO I2S peripheral base address.
handle	FlexIO I2S DMA handle pointer.

◆ FLEXIO_I2S_TransferGetReceiveCountDMA()

status_t FLEXIO_I2S_TransferGetReceiveCountDMA	(	FLEXIO_I2S_Type *	base,
		flexio_i2s_dma_handle_t *	handle,
		size_t *	count
	)

Gets the remaining bytes to be received.

Parameters

base	FlexIO I2S peripheral base address.
handle	FlexIO I2S DMA handle pointer.
count	Bytes received.

Return values

kStatus_Success	Succeed get the transfer count.
kStatus_NoTransferInProgress	There is not a non-blocking transaction currently in progress.

◆ FLEXIO_I2S_TransferGetSendCountDMA()

status_t FLEXIO_I2S_TransferGetSendCountDMA	(	FLEXIO_I2S_Type *	base,
		flexio_i2s_dma_handle_t *	handle,
		size_t *	count
	)

Gets the remaining bytes to be sent.

Parameters

base	FlexIO I2S peripheral base address.
handle	FlexIO I2S DMA handle pointer.
count	Bytes sent.

Return values

kStatus_Success	Succeed get the transfer count.
kStatus_NoTransferInProgress	There is not a non-blocking transaction currently in progress.

◆ FLEXIO_I2S_TransferReceiveDMA()

status_t FLEXIO_I2S_TransferReceiveDMA	(	FLEXIO_I2S_Type *	base,
		flexio_i2s_dma_handle_t *	handle,
		flexio_i2s_transfer_t *	xfer
	)

Performs a non-blocking FlexIO I2S receive using DMA.

Note: This interface returns immediately after transfer initiates. Call FLEXIO_I2S_GetReceiveRemainingBytes to poll the transfer status to check whether the FlexIO I2S transfer is finished.

Parameters

base	FlexIO I2S peripheral base address.
handle	FlexIO I2S DMA handle pointer.
xfer	Pointer to DMA transfer structure.

Return values

kStatus_Success	Start a FlexIO I2S DMA receive successfully.
kStatus_InvalidArgument	The input arguments is invalid.
kStatus_RxBusy	FlexIO I2S is busy receiving data.

◆ FLEXIO_I2S_TransferRxCreateHandleDMA()

void FLEXIO_I2S_TransferRxCreateHandleDMA	(	FLEXIO_I2S_Type *	base,
		flexio_i2s_dma_handle_t *	handle,
		flexio_i2s_dma_callback_t	callback,
		void *	userData,
		dma_handle_t *	dmaHandle
	)

Initializes the FlexIO I2S Rx DMA handle.

This function initializes the FlexIO I2S slave DMA handle which can be used for other FlexIO I2S master transactional APIs. Usually, for a specified FlexIO I2S instance, call this API once to get the initialized handle.

Parameters

base	FlexIO I2S peripheral base address.
handle	FlexIO I2S DMA handle pointer.
callback	FlexIO I2S DMA callback function called while finished a block.
userData	User parameter for callback.
dmaHandle	DMA handle for FlexIO I2S. This handle is a static value allocated by users.

◆ FLEXIO_I2S_TransferSendDMA()

status_t FLEXIO_I2S_TransferSendDMA	(	FLEXIO_I2S_Type *	base,
		flexio_i2s_dma_handle_t *	handle,
		flexio_i2s_transfer_t *	xfer
	)

Performs a non-blocking FlexIO I2S transfer using DMA.

Note: This interface returns immediately after transfer initiates. Call FLEXIO_I2S_GetTransferStatus to poll the transfer status and check whether FLEXIO I2S transfer finished.

Parameters

base	FlexIO I2S peripheral base address.
handle	FlexIO I2S DMA handle pointer.
xfer	Pointer to DMA transfer structure.

Return values

kStatus_Success	Start a FlexIO I2S DMA send successfully.
kStatus_InvalidArgument	The input arguments is invalid.
kStatus_TxBusy	FlexIO I2S is busy sending data.

◆ FLEXIO_I2S_TransferSetFormatDMA()

void FLEXIO_I2S_TransferSetFormatDMA	(	FLEXIO_I2S_Type *	base,
		flexio_i2s_dma_handle_t *	handle,
		flexio_i2s_format_t *	format,
		uint32_t	srcClock_Hz
	)

Configures the FlexIO I2S Tx audio format.

Audio format can be changed at run-time of FlexIO I2S. This function configures the sample rate and audio data format to be transferred. This function also sets the DMA parameter according to the format.

Parameters

base	FlexIO I2S peripheral base address.
handle	FlexIO I2S DMA handle pointer
format	Pointer to FlexIO I2S audio data format structure.
srcClock_Hz	FlexIO I2S clock source frequency in Hz. It should be 0 while in slave mode.

◆ FLEXIO_I2S_TransferTxCreateHandleDMA()

void FLEXIO_I2S_TransferTxCreateHandleDMA	(	FLEXIO_I2S_Type *	base,
		flexio_i2s_dma_handle_t *	handle,
		flexio_i2s_dma_callback_t	callback,
		void *	userData,
		dma_handle_t *	dmaHandle
	)

Initializes the FlexIO I2S DMA handle.

This function initializes the FlexIO I2S master DMA handle which can be used for other FlexIO I2S master transactional APIs. Usually, for a specified FlexIO I2S instance, call this API once to get the initialized handle.

Parameters

base	FlexIO I2S peripheral base address.
handle	FlexIO I2S DMA handle pointer.
callback	FlexIO I2S DMA callback function called while finished a block.
userData	User parameter for callback.
dmaHandle	DMA handle for FlexIO I2S. This handle is a static value allocated by users.

Data Structures

Driver version

DMA Transactional

Detailed Description

Function Documentation

◆ FLEXIO_I2S_TransferAbortReceiveDMA()

◆ FLEXIO_I2S_TransferAbortSendDMA()

◆ FLEXIO_I2S_TransferGetReceiveCountDMA()

◆ FLEXIO_I2S_TransferGetSendCountDMA()

◆ FLEXIO_I2S_TransferReceiveDMA()

◆ FLEXIO_I2S_TransferRxCreateHandleDMA()

◆ FLEXIO_I2S_TransferSendDMA()

◆ FLEXIO_I2S_TransferSetFormatDMA()

◆ FLEXIO_I2S_TransferTxCreateHandleDMA()