ECSPI SDMA Driver

Overview

Data Structures
struct	ecspi_sdma_handle_t
	ECSPI SDMA transfer handle, users should not touch the content of the handle. More...

Typedefs
typedef void(*	ecspi_sdma_callback_t )(ECSPI_Type *base, ecspi_sdma_handle_t *handle, status_t status, void *userData)
	ECSPI SDMA callback called at the end of transfer. More...

Driver version
#define	FSL_ECSPI_FREERTOS_DRIVER_VERSION   (MAKE_VERSION(2, 0, 1))
	ECSPI FreeRTOS driver version 2.0.1. More...

DMA Transactional
void	ECSPI_MasterTransferCreateHandleSDMA (ECSPI_Type *base, ecspi_sdma_handle_t *handle, ecspi_sdma_callback_t callback, void *userData, sdma_handle_t *txHandle, sdma_handle_t *rxHandle, uint32_t eventSourceTx, uint32_t eventSourceRx, uint32_t TxChannel, uint32_t RxChannel)
	Initialize the ECSPI master SDMA handle. More...
void	ECSPI_SlaveTransferCreateHandleSDMA (ECSPI_Type *base, ecspi_sdma_handle_t *handle, ecspi_sdma_callback_t callback, void *userData, sdma_handle_t *txHandle, sdma_handle_t *rxHandle, uint32_t eventSourceTx, uint32_t eventSourceRx, uint32_t TxChannel, uint32_t RxChannel)
	Initialize the ECSPI Slave SDMA handle. More...
status_t	ECSPI_MasterTransferSDMA (ECSPI_Type *base, ecspi_sdma_handle_t *handle, ecspi_transfer_t *xfer)
	Perform a non-blocking ECSPI master transfer using SDMA. More...
status_t	ECSPI_SlaveTransferSDMA (ECSPI_Type *base, ecspi_sdma_handle_t *handle, ecspi_transfer_t *xfer)
	Perform a non-blocking ECSPI slave transfer using SDMA. More...
void	ECSPI_MasterTransferAbortSDMA (ECSPI_Type *base, ecspi_sdma_handle_t *handle)
	Abort a ECSPI master transfer using SDMA. More...
void	ECSPI_SlaveTransferAbortSDMA (ECSPI_Type *base, ecspi_sdma_handle_t *handle)
	Abort a ECSPI slave transfer using SDMA. More...

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Data Structure Documentation

struct _ecspi_sdma_handle

Data Fields
bool	txInProgress
	Send transfer finished.
bool	rxInProgress
	Receive transfer finished.
sdma_handle_t *	txSdmaHandle
	DMA handler for ECSPI send.
sdma_handle_t *	rxSdmaHandle
	DMA handler for ECSPI receive.
ecspi_sdma_callback_t	callback
	Callback for ECSPI SDMA transfer.
void *	userData
	User Data for ECSPI SDMA callback.
uint32_t	state
	Internal state of ECSPI SDMA transfer.
uint32_t	ChannelTx
	Channel for send handle.
uint32_t	ChannelRx
	Channel for receive handler.

Macro Definition Documentation

#define FSL_ECSPI_FREERTOS_DRIVER_VERSION   (MAKE_VERSION(2, 0, 1))

Typedef Documentation

typedef void(* ecspi_sdma_callback_t)(ECSPI_Type *base, ecspi_sdma_handle_t *handle, status_t status, void *userData)

Function Documentation

void ECSPI_MasterTransferCreateHandleSDMA	(	ECSPI_Type *	base,
		ecspi_sdma_handle_t *	handle,
		ecspi_sdma_callback_t	callback,
		void *	userData,
		sdma_handle_t *	txHandle,
		sdma_handle_t *	rxHandle,
		uint32_t	eventSourceTx,
		uint32_t	eventSourceRx,
		uint32_t	TxChannel,
		uint32_t	RxChannel
	)

This function initializes the ECSPI master SDMA handle which can be used for other SPI master transactional APIs. Usually, for a specified ECSPI instance, user need only call this API once to get the initialized handle.

Parameters

base	ECSPI peripheral base address.
handle	ECSPI handle pointer.
callback	User callback function called at the end of a transfer.
userData	User data for callback.
txHandle	SDMA handle pointer for ECSPI Tx, the handle shall be static allocated by users.
rxHandle	SDMA handle pointer for ECSPI Rx, the handle shall be static allocated by users.
eventSourceTx	event source for ECSPI send, which can be found in SDMA mapping.
eventSourceRx	event source for ECSPI receive, which can be found in SDMA mapping.
TxChannel	SDMA channel for ECSPI send.
RxChannel	SDMA channel for ECSPI receive.

void ECSPI_SlaveTransferCreateHandleSDMA	(	ECSPI_Type *	base,
		ecspi_sdma_handle_t *	handle,
		ecspi_sdma_callback_t	callback,
		void *	userData,
		sdma_handle_t *	txHandle,
		sdma_handle_t *	rxHandle,
		uint32_t	eventSourceTx,
		uint32_t	eventSourceRx,
		uint32_t	TxChannel,
		uint32_t	RxChannel
	)

This function initializes the ECSPI Slave SDMA handle which can be used for other SPI Slave transactional APIs. Usually, for a specified ECSPI instance, user need only call this API once to get the initialized handle.

Parameters

base	ECSPI peripheral base address.
handle	ECSPI handle pointer.
callback	User callback function called at the end of a transfer.
userData	User data for callback.
txHandle	SDMA handle pointer for ECSPI Tx, the handle shall be static allocated by users.
rxHandle	SDMA handle pointer for ECSPI Rx, the handle shall be static allocated by users.
eventSourceTx	event source for ECSPI send, which can be found in SDMA mapping.
eventSourceRx	event source for ECSPI receive, which can be found in SDMA mapping.
TxChannel	SDMA channel for ECSPI send.
RxChannel	SDMA channel for ECSPI receive.

status_t ECSPI_MasterTransferSDMA	(	ECSPI_Type *	base,
		ecspi_sdma_handle_t *	handle,
		ecspi_transfer_t *	xfer
	)

Note

This interface returned immediately after transfer initiates.

Parameters

base	ECSPI peripheral base address.
handle	ECSPI SDMA handle pointer.
xfer	Pointer to sdma transfer structure.

Return values

kStatus_Success	Successfully start a transfer.
kStatus_InvalidArgument	Input argument is invalid.
kStatus_ECSPI_Busy	EECSPI is not idle, is running another transfer.

status_t ECSPI_SlaveTransferSDMA	(	ECSPI_Type *	base,
		ecspi_sdma_handle_t *	handle,
		ecspi_transfer_t *	xfer
	)

Note

This interface returned immediately after transfer initiates.

Parameters

base	ECSPI peripheral base address.
handle	ECSPI SDMA handle pointer.
xfer	Pointer to sdma transfer structure.

Return values

kStatus_Success	Successfully start a transfer.
kStatus_InvalidArgument	Input argument is invalid.
kStatus_ECSPI_Busy	EECSPI is not idle, is running another transfer.

void ECSPI_MasterTransferAbortSDMA	(	ECSPI_Type *	base,
		ecspi_sdma_handle_t *	handle
	)

Parameters

base	ECSPI peripheral base address.
handle	ECSPI SDMA handle pointer.

void ECSPI_SlaveTransferAbortSDMA	(	ECSPI_Type *	base,
		ecspi_sdma_handle_t *	handle
	)

Parameters

base	ECSPI peripheral base address.
handle	ECSPI SDMA handle pointer.