Overview

Typical use case

SSP Operation

Refer to the driver examples codes located at <SDK_ROOT>/boards/<BOARD>/driver_examples/ssp

Data Structures
struct	ssp_spi_mode_config_t
	ssp motorola spi mode configuration More...

struct	ssp_psp_mode_config_t
	ssp psp mode configuration More...

struct	ssp_config_t
	ssp configuration More...

struct	ssp_transfer_t
	ssp transfer content More...

struct	ssp_handle_t
	SSP handle. More...

Driver version
enum	{ kSSP_TransferStatusTxIdle = MAKE_STATUS(kStatusGroup_SSP, 0), kSSP_TransferStatusRxIdle = MAKE_STATUS(kStatusGroup_SSP, 1), kSSP_TransferStatusBusy = MAKE_STATUS(kStatusGroup_SSP, 2), kSSP_TransferStatusBitCountError = MAKE_STATUS(kStatusGroup_SSP, 3), kSSP_TransferStatusTxFifoError = MAKE_STATUS(kStatusGroup_SSP, 4), kSSP_TransferStatusRxFifoError = MAKE_STATUS(kStatusGroup_SSP, 5) }
	transfer status More...

enum	ssp_transcevier_mode_t { kSSP_TransmitReceiveMode, kSSP_ReceiveMode }
	ssp mode More...

enum	{ kSSP_InterruptTransmitFifoUnderrun = 1U, kSSP_InterruptReceiveFifoOverrun = 2U, kSSP_InterruptBitCountError = 4U, kSSP_InterruptTransmitFifoReady = 8U, kSSP_InterruptReceiveFifoReady = 16U }
	ssp interrupt mask More...

enum	ssp_transceiver_format_t { kSSP_TransceiverFormatSPI = 0U, kSSP_TransceiverFormatPSP = 3U }
	ssp frame format More...

enum	ssp_clock_direction_t { kSSP_ClockDirectionMaster = 0U, kSSP_ClockDirectionSlave }
	ssp clock direction More...

enum	ssp_data_width_t { kSSP_DataSize8Bit = 0x7U, kSSP_DataSize16Bit = 0xFU, kSSP_DataSize18Bit = 1U \| (1U << 20U), kSSP_DataSize32Bit = 0xFU \| (1U << 20U) }
	ssp data size More...

enum	ssp_txd_last_phase_state_t { kSSP_TxdLastPhase3StatedHalfOfLSBClockCycle, kSSP_TxdLastPhase3StatedOnLSBEndClockEdge = 1U }
	ssp txd last phase state More...

enum	ssp_txd_idle_state_t { kSSP_TxdIdleStateIsNot3Stated = 0U, kSSP_TxdIdleState3Stated = 1U }
	ssp txd last phase state More...

enum	ssp_txd_end_transfer_state_t { kSSP_TxdEndTransferState0 = 0U, kSSP_TxdEndTransferState1 = 1U }
	ssp txd end transfer state More...

enum	ssp_clock_polarity_t { kSSP_ClockPolarityLow = 0U, kSSP_ClockPolarityHigh = 1U }
	ssp clk polarity More...

enum	ssp_bit_clock_mode_t { kSPP_BitClockIdleLowDrivenFallingSampleRising, kSPP_BitClockIdleLowDrivenRisingSampleFalling, kSPP_BitClockIdleHighDrivenRasingSampleFalling, kSPP_BitClockIdleHighDrivenFallingSampleRising }
	ssp bit clock mode More...

enum	ssp_frame_sync_relative_timing_t { kSSP_FrameSyncAssertAfterEndOfDMTStop = 0U, kSSP_FrameSyncAssertWithTheLsbOfThePreviousFrame = 1U }
	ssp frame sync relative timing bit More...

enum	ssp_spi_clock_phase_t { kSSP_SpiClkPhase0 = 0U, kSSP_SpiClkPhase1 = 1U }
	ssp spi clk phase More...

typedef void(*	ssp_transfer_callback_t )(ssp_handle_t handle, status_t transferStatus, void userData)
	SSP callback pointer.

#define	FSL_SSP_DRIVER_VERSION (MAKE_VERSION(2U, 0U, 0U))
	Driver version 2.0.0. More...

#define	SSP_XFER_QUEUE_SIZE 4U
	SSP xfer queue size definition.

SSP Initialization and deinitialization
void	SSP_GetDefaultConfig (ssp_config_t *config)
	SSP get default configuration. More...

void	SSP_Init (SSP_Type base, const ssp_config_t config)
	SSP module initialization function. More...

void	SSP_Deinit (SSP_Type *base)
	Deinitializes the SSP. More...

uint32_t	SSP_GetInstance (SSP_Type *base)
	Get SSP instance index. More...

SSP bus functional interface
void	SSP_GetDefaultSPIModeConfig (ssp_spi_mode_config_t *config)
	SSP get default SPI mode configuration. More...

void	SSP_SetSPIModeConfig (SSP_Type base, const ssp_spi_mode_config_t config)
	SSP set SPI mode configuration. More...

void	SSP_GetDefaultPSPModeConfig (ssp_psp_mode_config_t *config)
	SSP get default PSP mode configuration. More...

void	SSP_SetPSPModeConfig (SSP_Type base, const ssp_psp_mode_config_t config)
	SSP set PSP mode configuration. More...

static void	SSP_EnableLoopBackMode (SSP_Type *base, bool enable)
	SSP enable/disable loop back mode. More...

static void	SSP_WriteData (SSP_Type *base, uint32_t data)
	SSP write data fifo. More...

static uint32_t	SSP_ReadData (SSP_Type *base)
	SSP read data fifo. More...

static void	SSP_Enable (SSP_Type *base, bool enable)
	SSP enable/disable. More...

SSP interrupt functional interface
void	SSP_EnableInterrupt (SSP_Type *base, uint32_t interruptMask)
	SSP enable interrupt. More...

void	SSP_DisableInterrupt (SSP_Type *base, uint32_t interruptMask)
	SSP disable interrupt. More...

void	SSP_ClearInterruptStatus (SSP_Type *base, uint32_t interruptMask)
	SSP clear interrupt status. More...

uint32_t	SSP_GetInterruptStatus (SSP_Type *base)
	brief SSP get interrupt status. More...

SSP dma functional interface
static void	SSP_EnableSendDMARequest (SSP_Type *base, bool enable)
	SSP enable/disable tx DMA requst. More...

static void	SSP_EnableReceiveDMARequest (SSP_Type *base, bool enable)
	SSP enable/disable rx DMA requst. More...

static uint32_t	SSP_GetFifoAddress (SSP_Type *base)
	SSP get data fifo address. More...

SSP transactional interface
void	SSP_TransferSendCreateHandle (SSP_Type base, ssp_handle_t handle, ssp_transfer_callback_t callback, void *userData)
	Creates the SSP send handle. More...

void	SSP_TransferReceiveCreateHandle (SSP_Type base, ssp_handle_t handle, ssp_transfer_callback_t callback, void *userData)
	Creates the SSP receive handle. More...

status_t	SSP_TransferSendNonBlocking (ssp_handle_t handle, ssp_transfer_t transfer)
	Send the data using an interrupt and an asynchronous method. More...

status_t	SSP_TransferReceiveNonBlocking (ssp_handle_t handle, ssp_transfer_t transfer)
	Receive the data using an interrupt and an asynchronous method. More...

void	SSP_TransferAbortSend (ssp_handle_t *handle)
	Aborts the current send. More...

void	SSP_TransferAbortReceive (ssp_handle_t *handle)
	Aborts the current IRQ receive. More...

void	SSP_TransferSendHandleIRQ (ssp_handle_t *handle)
	IRQ handler for the SSP transmitter. More...

void	SSP_TransferReceiveHandleIRQ (ssp_handle_t *handle)
	IRQ handler for the SSP receiver. More...

Data Structure Documentation

struct ssp_spi_mode_config_t

Data Fields
ssp_clock_polarity_t	spiClockPolarity
	SPI clock polarity.

ssp_spi_clock_phase_t	spiClockPhase
	SPI clock pahse.

ssp_clock_direction_t	spiClockDirection
	SPI clock direction for serial bit clock direction and frame clock direction.

ssp_data_width_t	dataWidth
	data width 8/16/18/32 bits

ssp_txd_idle_state_t	txdIdleState
	txd state when idle

ssp_txd_last_phase_state_t	txdLastPhaseState
	txd last phase state

struct ssp_psp_mode_config_t

Data Fields
ssp_clock_direction_t	bitClockDirection
	bit clock generate internally or input externally

ssp_bit_clock_mode_t	bitClockMode
	bit clock mode

ssp_clock_direction_t	frameClockDirection
	frame clock generate internally or input externally

ssp_clock_polarity_t	frameClockPolarity
	frame clock polarity

ssp_frame_sync_relative_timing_t	frameRelativeTiming
	frame sync relative timing

ssp_txd_idle_state_t	txdIdleState
	txd state when idle

ssp_txd_last_phase_state_t	txdLastPhaseState
	txd last phase state

ssp_txd_end_transfer_state_t	txdEndTransferState
	txd end transfer state

ssp_data_width_t	dataWidth
	data width 8/16/18/32 bits

uint8_t	frameLength
	frame length, valid range 1-0x3F SSPSCLKx cycles

uint8_t	dummyStartDelay
	The MSB of the dummy start delay.

uint8_t	dummyStopDelay
	The MSB of the dummy stop delay.

uint8_t	startDelay
	number of 0-7 non-active clocks that defines the duration of idle time

uint8_t	frameDelay
	Programmed value specifies the number (0 -127) of active one-half clocks (SSPSCLKx) asserted from the most-significant bit of TXDx (output) or RXD (input) being driven to SSPSFRMx. More...

bool	enableNetWorkMode
	network should be enabled when emulating I2S protocol

uint8_t	frameSlotsNumber
	the tims slots number per frame, 1-8 can be specified

uint8_t	txActiveSlotMask
	the each bit in the txActiveSlotMask represent a time slot 0 is the SSP does not transmit data in this time slot, 1 is the SSP does transmit data in this time slot, so txActiveSlotMask = 3 means slot 0 and 1 is enabled, other slots are disabled

uint8_t	rxActiveSlotMask
	the each bit in the txActiveSlotMask represent a time slot 0 is the SSP does not transmit data in this time slot, 1 is the SSP does transmit data in this time slot, so txActiveSlotMask = 3 means slot 0 and 1 is enabled, other slots are disabled

Field Documentation

uint8_t ssp_psp_mode_config_t::frameDelay

struct ssp_config_t

Data Fields
bool	enableRXHalfCycleDelay
	true is enable rx half cycle delay, false is disable

bool	enableMasterClockReturn
	true is enable master clock delay, false is disable

bool	enableSlaveClockFreeRuning
	true is clock input to SSPSCLKx is only active during data transfer false is clock input to SSPSCLKx is continuously runing

bool	enableFifoPackingMode
	fifo packing mode

uint8_t	txFifoWaterMark
	tx fifo watermark value

uint8_t	rxFifoWaterMark
	rx fifo watermark value

ssp_transcevier_mode_t	mode
	transceiver work mode

ssp_transceiver_format_t	format
	transceiver work format

void *	transceiverConfig
	transceiver configuration pointer, should be a pointer of More...

Field Documentation

void* ssp_config_t::transceiverConfig

ssp_psp_mode_config_t, can be used to simulate i2s
ssp_spi_mode_config_t, can be used to simulate spi

struct ssp_transfer_t

Data Fields
void *	dataBuffer
	the pointer of data buffer

uint32_t	dataSize
	the size of data to be transferred

struct _ssp_handle

SSP handle typedef.

Defines the structure to save the SSP state information and callback function. A ssp_handle variable can be used to represent either SSP TX or SSP RX.

Data Fields
SSP_Type *	base
	ssp base address

uint32_t	bitWidth
	bit width

uint32_t	sspFifoWatermark
	ssp fifo WaterMark

ssp_transfer_t	sspQueue [SSP_XFER_QUEUE_SIZE]
	ssp queue storing queued transfer

volatile uint8_t	sspQueueUser
	Index for user to queue transfer.

volatile uint8_t	sspQueueDriver
	Index for driver to get the transfer data and size.

ssp_transfer_callback_t	callback
	Callback function. More...

void *	userData
	Parameter for transfer complete callback. More...

Field Documentation

ssp_transfer_callback_t ssp_handle_t::callback

void* ssp_handle_t::userData

Macro Definition Documentation

#define FSL_SSP_DRIVER_VERSION (MAKE_VERSION(2U, 0U, 0U))

Enumeration Type Documentation

anonymous enum

Enumerator
kSSP_TransferStatusTxIdle	ssp status idle
kSSP_TransferStatusRxIdle	ssp status idle
kSSP_TransferStatusBusy	ssp status busy
kSSP_TransferStatusBitCountError	ssp status bit count error
kSSP_TransferStatusTxFifoError	ssp status tx fifo error
kSSP_TransferStatusRxFifoError	ssp status rx fifo error

enum ssp_transcevier_mode_t

Enumerator
kSSP_TransmitReceiveMode	ssp tansmit and receive mode
kSSP_ReceiveMode	ssp receive without transmit mode

anonymous enum

Enumerator
kSSP_InterruptTransmitFifoUnderrun	transmit fifo underrun
kSSP_InterruptReceiveFifoOverrun	receive fifo underrun
kSSP_InterruptBitCountError	bit count error
kSSP_InterruptTransmitFifoReady	transmit fifo ready for write
kSSP_InterruptReceiveFifoReady	receive fifo ready for read

enum ssp_transceiver_format_t

Enumerator
kSSP_TransceiverFormatSPI	frame format serial Peripheral Interface
kSSP_TransceiverFormatPSP	frame format programmable serial protocol

enum ssp_clock_direction_t

Enumerator
kSSP_ClockDirectionMaster	SSP clock direction master.
kSSP_ClockDirectionSlave	SSP clock direction slave.

enum ssp_data_width_t

Enumerator
kSSP_DataSize8Bit	SSP data size 8 bit.
kSSP_DataSize16Bit	SSP data size 16 bit.
kSSP_DataSize18Bit	SSP data size 18 bit.
kSSP_DataSize32Bit	SSP data size 32 bit.

enum ssp_txd_last_phase_state_t

Enumerator
kSSP_TxdLastPhase3StatedHalfOfLSBClockCycle	txdx is 3-stated 1/2 clock cycle after the beginning of the LSB
kSSP_TxdLastPhase3StatedOnLSBEndClockEdge	txdx is 3-stated on the clock edge that ends the LSB

enum ssp_txd_idle_state_t

Enumerator
kSSP_TxdIdleStateIsNot3Stated	txdx is not 3-stated when not transmitting data
kSSP_TxdIdleState3Stated	txdx is 3-stated when not transmitting data

enum ssp_txd_end_transfer_state_t

Enumerator
kSSP_TxdEndTransferState0	txd end transfer state 0
kSSP_TxdEndTransferState1	txd end transfer state 1

enum ssp_clock_polarity_t

Enumerator
kSSP_ClockPolarityLow	clock polarity low
kSSP_ClockPolarityHigh	clock polarity high

enum ssp_bit_clock_mode_t

Enumerator
kSPP_BitClockIdleLowDrivenFallingSampleRising	data driven on falling edge, sample on rising edge, ide state low
kSPP_BitClockIdleLowDrivenRisingSampleFalling	data driven on rising edge, sample on falling edge, ide state low
kSPP_BitClockIdleHighDrivenRasingSampleFalling	data driven on rising edge, sample on falling edge, ide state high
kSPP_BitClockIdleHighDrivenFallingSampleRising	data driven on falling edge, sample on rising edge, ide state high

enum ssp_frame_sync_relative_timing_t

Enumerator
kSSP_FrameSyncAssertAfterEndOfDMTStop	next frame assert after the end of the DMTSTOP timing
kSSP_FrameSyncAssertWithTheLsbOfThePreviousFrame	next frame assert with the LSB of previous frame

enum ssp_spi_clock_phase_t

Enumerator
kSSP_SpiClkPhase0	motorola clk inactive until one cycle after the start of frame and active until 1/2 cycle before the end of a frame
kSSP_SpiClkPhase1	motorola clk inactive until 1/2 cycle after the start of frame and active until 1 cycle before the end of a frame

Function Documentation

void SSP_GetDefaultConfig ( ssp_config_t * config )

*  config->enableRXHalfCycleDelay     = false;
*  config->enableMasterClockReturn    = false;
*  config->enableFifoPackingMode      = false;
*  config->enableSlaveClockFreeRuning = false;
*  config->txFifoWaterMark            = SSP_FIFO_COUNT(32) / 2U;
*  config->rxFifoWaterMark            = SSP_FIFO_COUNT(32) / 2U;
*  config->mode                       = kSSP_TransmitReceiveMode;
*  config->format                     = kSSP_TransceiverFormatPSP;
* 

Parameters

config the pointer of ssp configuration structure.

void SSP_Init	(	SSP_Type *	base,
		const ssp_config_t *	config
	)

Configures the SSP according to the user configuration.

Parameters

base	SSP peripheral base address.
config	SSP configuration information.

void SSP_Deinit ( SSP_Type * base )

Parameters

base	SSP peripheral base address.

uint32_t SSP_GetInstance ( SSP_Type * base )

Used for SSP DMA driver only.

Parameters

base	SSP peripheral base address.

void SSP_GetDefaultSPIModeConfig ( ssp_spi_mode_config_t * config )

The default SSP SPI mode configurations:

*  config->spiClockPolarity  = kSSP_ClockPolarityLow;
*  config->spiClockPhase     = kSSP_SpiClkPhase0;
*  config->spiClockDirection = kSSP_ClockDirectionMaster;
*  config->dataWidth         = kSSP_DataSize8Bit;
*  config->txdIdleState      = kSSP_TxdIdleStateIsNot3Stated;
*  config->txdLastPhaseState = kSSP_TxdLastPhase3StatedHalfOfLSBClockCycle;
* 

Parameters

config the pointer of ssp configuration structure.

void SSP_SetSPIModeConfig	(	SSP_Type *	base,
		const ssp_spi_mode_config_t *	config
	)

Parameters

base	SSP peripheral base address.
config	the pointer of ssp spi mode configuration structure.

void SSP_GetDefaultPSPModeConfig ( ssp_psp_mode_config_t * config )

The default SSP PSP mode configurations are 16bit, 2 slots, i2s protocol.

*  config->bitClockDirection = kSSP_ClockDirectionMaster;
*  config->bitClockMode      = kSPP_BitClockIdleLowDrivenFallingSampleRising;
*  config->frameClockDirection = kSSP_ClockDirectionMaster;
*  config->frameClockPolarity  = kSSP_ClockPolarityLow;
*  config->frameRelativeTiming = kSSP_FrameSyncAssertWithTheLsbOfThePreviousFrame;
*  config->txdIdleState        = kSSP_TxdIdleStateIsNot3Stated;
*  config->txdLastPhaseState   = kSSP_TxdLastPhase3StatedOnLSBEndClockEdge;
*  config->txdEndTransferState = kSSP_TxdEndTransferState0;
*  config->dataWidth   = kSSP_DataSize16Bit;
*  config->frameLength = 16U;
*  config->enableNetWorkMode = true;
*  config->frameSlotsNumber  = 2U;
*  config->txActiveSlotMask  = 3U;
*  config->rxActiveSlotMask  = 3U;
*  config->dummyStartDelay = 0U;
*  config->dummyStopDelay  = 0U;
*  config->startDelay      = 0U;
*  config->frameDelay      = 0U;
* 

Parameters

config the pointer of PSP configuration structure.

void SSP_SetPSPModeConfig	(	SSP_Type *	base,
		const ssp_psp_mode_config_t *	config
	)

Parameters

base	SSP peripheral base address.
config	the pointer of ssp psp mode configuration structure.

static void SSP_EnableLoopBackMode	(	SSP_Type *	base,
		bool	enable
	)

inlinestatic

The tx serial shifter is internally connected to input of RX serial shifter, the loopback mode used for test purpose only.

Parameters

base	SSP peripheral base address.
enable	true is enable the loop back mode, false is disable the loop back mode.

static void SSP_WriteData	(	SSP_Type *	base,
		uint32_t	data
	)

inlinestatic

When a data sample size of less than 32-bits is selected, or 16 bits for packed mode, software should right-justify the data that is written to the SSP Data Register for automatic insertion into the TXFIFO. The transmit logic left-justifies the data and ignores any unused bits, cannot perform a write in packed mode of less than 32 bits wide.

Parameters

base	SSP peripheral base address.
data	data to write.

static uint32_t SSP_ReadData ( SSP_Type * base )

inlinestatic

Received data of less than 32 bits is right-justified automatically in the RXFIFO

Parameters

base	SSP peripheral base address.

Returns: data value read from fifo.

static void SSP_Enable	(	SSP_Type *	base,
		bool	enable
	)

inlinestatic

Parameters

base	SSP peripheral base address.
enable	true is enable, false is disable.

void SSP_EnableInterrupt	(	SSP_Type *	base,
		uint32_t	interruptMask
	)

Parameters

base	SSP peripheral base address
interruptMask	the Interrupt to be enabled, can a value or OR value of _ssp_interrupt_mask.

void SSP_DisableInterrupt	(	SSP_Type *	base,
		uint32_t	interruptMask
	)

Parameters

base	SSP peripheral base address
interruptMask	the Interrupt to be disable, can a value or OR value of _ssp_interrupt_mask.

void SSP_ClearInterruptStatus	(	SSP_Type *	base,
		uint32_t	interruptMask
	)

Note: Transmit fifo ready flag and receive fifo flag do not support clear by software.

Parameters

base	SSP peripheral base address
interruptMask	the Interrupt to be cleared, can a value or OR'ed value of _ssp_interrupt_mask.

uint32_t SSP_GetInterruptStatus ( SSP_Type * base )

Parameters

base	SSP peripheral base address

Returns: interrupt status flag, a value or OR'ed value of _ssp_interrupt_mask.

static void SSP_EnableSendDMARequest	(	SSP_Type *	base,
		bool	enable
	)

inlinestatic

Parameters

base	SSP peripheral base address.
enable	true is enable TX dma request, false is disable

static void SSP_EnableReceiveDMARequest	(	SSP_Type *	base,
		bool	enable
	)

inlinestatic

Parameters

base	SSP peripheral base address.
enable	true is enable RX dma request, false is disable

static uint32_t SSP_GetFifoAddress ( SSP_Type * base )

inlinestatic

Parameters

base	SSP peripheral base address.

Returns: the ssp data fifo register address.

void SSP_TransferSendCreateHandle	(	SSP_Type *	base,
		ssp_handle_t *	handle,
		ssp_transfer_callback_t	callback,
		void *	userData
	)

Parameters

base	SSP peripheral base address.
handle	SSP handle pointer.
callback	Structure pointer to contain all callback functions.
userData	Callback function parameter.

void SSP_TransferReceiveCreateHandle	(	SSP_Type *	base,
		ssp_handle_t *	handle,
		ssp_transfer_callback_t	callback,
		void *	userData
	)

Parameters

base	SSP peripheral base address.
handle	SSP handle pointer.
callback	Structure pointer to contain all callback functions.
userData	Callback function parameter.

status_t SSP_TransferSendNonBlocking	(	ssp_handle_t *	handle,
		ssp_transfer_t *	transfer
	)

This function sends data and returns immediately. It doesn't wait for the transfer to complete or to encounter an error. The application can submit multiple transfer requests without waiting previous transfer request complete, since the SSP driver maintained a software transfer queue, the sizeof the queue is configurable by macro SSP_XFER_QUEUE_SIZE which indicates how many request can be submitted at the same time.

Note: Call API SSP_TransferSendCreateHandle when calling this API.

Parameters

handle	SSP handle.
transfer	transfer pointer.

Return values

kStatus_InvalidArgument	Argument is invalid.
kSSP_TransferStatusBusy	Busy transferring.
kStatus_Success	Operate successfully.

status_t SSP_TransferReceiveNonBlocking	(	ssp_handle_t *	handle,
		ssp_transfer_t *	transfer
	)

This function sends data and returns immediately. It doesn't wait for the transfer to complete or to encounter an error. The application can submit multiple transfer requests without waiting previous transfer request complete, since the SSP driver maintained a software transfer queue, the sizeof the queue is configurable by macro SSP_XFER_QUEUE_SIZE which indicates how many request can be submitted at the same time.

Note: Call API SSP_TransferReceiveCreateHandle when calling this API.

Parameters

handle	SSP handle.
transfer	transfer pointer.

Return values

kStatus_InvalidArgument	Argument is invalid.
kSSP_TransferStatusBusy	Busy transferring.
kStatus_Success	Operate successfully.

void SSP_TransferAbortSend ( ssp_handle_t * handle )

Note: This API can be called any time when an interrupt non-blocking transfer initiates to abort the transfer early.

Parameters

handle Pointer to the ssp_handle_t structure which stores the transfer state.

void SSP_TransferAbortReceive ( ssp_handle_t * handle )

Note: This API can be called when an interrupt non-blocking transfer initiates to abort the transfer early.

Parameters

handle Pointer to the ssp_handle_t structure which stores the transfer state.

void SSP_TransferSendHandleIRQ ( ssp_handle_t * handle )

This function deals with the IRQs on the given host controller.

Parameters

handle SSP handle.

void SSP_TransferReceiveHandleIRQ ( ssp_handle_t * handle )

This function deals with the IRQs on the given host controller.

Parameters

handle SSP handle.

Overview

Typical use case

SSP Operation

Data Structures

Driver version

SSP Initialization and deinitialization

SSP bus functional interface

SSP interrupt functional interface

SSP dma functional interface

SSP transactional interface

Data Structure Documentation

Data Fields

Data Fields

Field Documentation

Data Fields

Field Documentation

Data Fields

Data Fields

Field Documentation

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation