Overview

SPI driver includes functional APIs and transactional APIs.

Functional APIs are feature/property target low level APIs. Functional APIs can be used for SPI initialization/configuration/operation for optimization/customization purpose. Using the functional API requires the knowledge of the SPI peripheral and how to organize functional APIs to meet the application requirements. All functional API use the peripheral base address as the first parameter. SPI functional operation groups provide the functional API set.

Transactional APIs are transaction target high level APIs. Transactional APIs can be used to enable the peripheral and in the application if the code size and performance of transactional APIs satisfy the requirements. If the code size and performance are a critical requirement, see the transactional API implementation and write a custom code. All transactional APIs use the spi_handle_t as the first parameter. Initialize the handle by calling the SPI_MasterTransferCreateHandle() or SPI_SlaveTransferCreateHandle() API.

Transactional APIs support asynchronous transfer. This means that the functions SPI_MasterTransferNonBlocking() and SPI_SlaveTransferNonBlocking() set up the interrupt for data transfer. When the transfer completes, the upper layer is notified through a callback function with the kStatus_SPI_Idle status.

Typical use case

SPI master transfer using an interrupt method

#define BUFFER_LEN (64)
spi_master_handle_t spiHandle;
spi_master_config_t masterConfig;
spi_transfer_t xfer;
volatile bool isFinished = false;
const uint8_t sendData[BUFFER_LEN] = [......];
uint8_t receiveBuff[BUFFER_LEN];
void SPI_UserCallback(SPI_Type *base, spi_master_handle_t *handle, status_t status, void *userData)
{
    isFinished = true;
}
void main(void)
{
    //...
    SPI_MasterGetDefaultConfig(&masterConfig);
    SPI_MasterInit(SPI0, &masterConfig);
    SPI_MasterTransferCreateHandle(SPI0, &spiHandle, SPI_UserCallback, NULL);
    // Prepare to send.
    xfer.txData = sendData;
    xfer.rxData = receiveBuff;
    xfer.dataSize = BUFFER_LEN;
    // Send out.
    SPI_MasterTransferNonBlocking(SPI0, &spiHandle, &xfer);
    // Wait send finished.
    while (!isFinished)
    {
    }
    // ...
}

SPI Send/receive using a DMA method

#define BUFFER_LEN (64)
spi_dma_handle_t spiHandle;
dma_handle_t g_spiTxDmaHandle;
dma_handle_t g_spiRxDmaHandle;
spi_config_t masterConfig;
spi_transfer_t xfer;
volatile bool isFinished;
uint8_t sendData[BUFFER_LEN] = ...;
uint8_t receiveBuff[BUFFER_LEN];
void SPI_UserCallback(SPI_Type *base, spi_dma_handle_t *handle, status_t status, void *userData)
{
    isFinished = true;
}
void main(void)
{
    //...
    SPI_MasterGetDefaultConfig(&masterConfig);
    SPI_MasterInit(SPI0, &masterConfig);
    // Sets up the DMA.
    DMAMUX_Init(DMAMUX0);
    DMAMUX_SetSource(DMAMUX0, SPI_TX_DMA_CHANNEL, SPI_TX_DMA_REQUEST);
    DMAMUX_EnableChannel(DMAMUX0, SPI_TX_DMA_CHANNEL);
    DMAMUX_SetSource(DMAMUX0, SPI_RX_DMA_CHANNEL, SPI_RX_DMA_REQUEST);
    DMAMUX_EnableChannel(DMAMUX0, SPI_RX_DMA_CHANNEL);
    DMA_Init(DMA0);
    /* Creates the DMA handle. */
    DMA_CreateHandle(&g_spiTxDmaHandle, DMA0, SPI_TX_DMA_CHANNEL);
    DMA_CreateHandle(&g_spiRxDmaHandle, DMA0, SPI_RX_DMA_CHANNEL);
    SPI_MasterTransferCreateHandleDMA(SPI0, spiHandle, &g_spiTxDmaHandle, &g_spiRxDmaHandle, SPI_UserCallback, NULL);
    // Prepares to send.
    xfer.txData = sendData;
    xfer.rxData = receiveBuff;
    xfer.dataSize = BUFFER_LEN;
    // Sends out.
    SPI_MasterTransferDMA(SPI0, &spiHandle, &xfer);
    // Waits for send to complete.
    while (!isFinished)
    {
    }
    // ...
}

Data Structures
struct	spi_master_config_t
	SPI master user configure structure. More...

struct	spi_slave_config_t
	SPI slave user configure structure. More...

struct	spi_transfer_t
	SPI transfer structure. More...

struct	spi_master_handle_t
	SPI transfer handle structure. More...

Macros
#define	SPI_DUMMYDATA (0xFFU)
	SPI dummy transfer data, the data is sent while txBuff is NULL. More...

Typedefs
typedef spi_master_handle_t	spi_slave_handle_t
	Slave handle is the same with master handle.

typedef void(*	spi_master_callback_t )(SPI_Type base, spi_master_handle_t handle, status_t status, void *userData)
	SPI master callback for finished transmit.

typedef void(*	spi_slave_callback_t )(SPI_Type base, spi_slave_handle_t handle, status_t status, void *userData)
	SPI master callback for finished transmit.

Enumerations
enum	_spi_status { kStatus_SPI_Busy = MAKE_STATUS(kStatusGroup_SPI, 0), kStatus_SPI_Idle = MAKE_STATUS(kStatusGroup_SPI, 1), kStatus_SPI_Error = MAKE_STATUS(kStatusGroup_SPI, 2) }
	Return status for the SPI driver. More...

enum	spi_clock_polarity_t { kSPI_ClockPolarityActiveHigh = 0x0U, kSPI_ClockPolarityActiveLow }
	SPI clock polarity configuration. More...

enum	spi_clock_phase_t { kSPI_ClockPhaseFirstEdge = 0x0U, kSPI_ClockPhaseSecondEdge }
	SPI clock phase configuration. More...

enum	spi_shift_direction_t { kSPI_MsbFirst = 0x0U, kSPI_LsbFirst }
	SPI data shifter direction options. More...

enum	spi_ss_output_mode_t { kSPI_SlaveSelectAsGpio = 0x0U, kSPI_SlaveSelectFaultInput = 0x2U, kSPI_SlaveSelectAutomaticOutput = 0x3U }
	SPI slave select output mode options. More...

enum	spi_pin_mode_t { kSPI_PinModeNormal = 0x0U, kSPI_PinModeInput = 0x1U, kSPI_PinModeOutput = 0x3U }
	SPI pin mode options. More...

enum	spi_data_bitcount_mode_t { kSPI_8BitMode = 0x0U, kSPI_16BitMode }
	SPI data length mode options. More...

enum	_spi_interrupt_enable { kSPI_RxFullAndModfInterruptEnable = 0x1U, kSPI_TxEmptyInterruptEnable = 0x2U, kSPI_MatchInterruptEnable = 0x4U }
	SPI interrupt sources. More...

enum	_spi_flags { kSPI_RxBufferFullFlag = SPI_S_SPRF_MASK, kSPI_MatchFlag = SPI_S_SPMF_MASK, kSPI_TxBufferEmptyFlag = SPI_S_SPTEF_MASK, kSPI_ModeFaultFlag = SPI_S_MODF_MASK }
	SPI status flags. More...

Driver version
#define	FSL_SPI_DRIVER_VERSION (MAKE_VERSION(2, 0, 1))
	SPI driver version 2.0.1. More...

Initialization and deinitialization
void	SPI_MasterGetDefaultConfig (spi_master_config_t *config)
	Sets the SPI master configuration structure to default values. More...

void	SPI_MasterInit (SPI_Type base, const spi_master_config_t config, uint32_t srcClock_Hz)
	Initializes the SPI with master configuration. More...

void	SPI_SlaveGetDefaultConfig (spi_slave_config_t *config)
	Sets the SPI slave configuration structure to default values. More...

void	SPI_SlaveInit (SPI_Type base, const spi_slave_config_t config)
	Initializes the SPI with slave configuration. More...

void	SPI_Deinit (SPI_Type *base)
	De-initializes the SPI. More...

static void	SPI_Enable (SPI_Type *base, bool enable)
	Enables or disables the SPI. More...

Status
uint32_t	SPI_GetStatusFlags (SPI_Type *base)
	Gets the status flag. More...

Interrupts
void	SPI_EnableInterrupts (SPI_Type *base, uint32_t mask)
	Enables the interrupt for the SPI. More...

void	SPI_DisableInterrupts (SPI_Type *base, uint32_t mask)
	Disables the interrupt for the SPI. More...

DMA Control
static uint32_t	SPI_GetDataRegisterAddress (SPI_Type *base)
	Gets the SPI tx/rx data register address. More...

Bus Operations
void	SPI_MasterSetBaudRate (SPI_Type *base, uint32_t baudRate_Bps, uint32_t srcClock_Hz)
	Sets the baud rate for SPI transfer. More...

static void	SPI_SetMatchData (SPI_Type *base, uint32_t matchData)
	Sets the match data for SPI. More...

void	SPI_WriteBlocking (SPI_Type base, uint8_t buffer, size_t size)
	Sends a buffer of data bytes using a blocking method. More...

void	SPI_WriteData (SPI_Type *base, uint16_t data)
	Writes a data into the SPI data register. More...

uint16_t	SPI_ReadData (SPI_Type *base)
	Gets a data from the SPI data register. More...

Transactional
void	SPI_MasterTransferCreateHandle (SPI_Type base, spi_master_handle_t handle, spi_master_callback_t callback, void *userData)
	Initializes the SPI master handle. More...

status_t	SPI_MasterTransferBlocking (SPI_Type base, spi_transfer_t xfer)
	Transfers a block of data using a polling method. More...

status_t	SPI_MasterTransferNonBlocking (SPI_Type base, spi_master_handle_t handle, spi_transfer_t *xfer)
	Performs a non-blocking SPI interrupt transfer. More...

status_t	SPI_MasterTransferGetCount (SPI_Type base, spi_master_handle_t handle, size_t *count)
	Gets the bytes of the SPI interrupt transferred. More...

void	SPI_MasterTransferAbort (SPI_Type base, spi_master_handle_t handle)
	Aborts an SPI transfer using interrupt. More...

void	SPI_MasterTransferHandleIRQ (SPI_Type base, spi_master_handle_t handle)
	Interrupts the handler for the SPI. More...

void	SPI_SlaveTransferCreateHandle (SPI_Type base, spi_slave_handle_t handle, spi_slave_callback_t callback, void *userData)
	Initializes the SPI slave handle. More...

static status_t	SPI_SlaveTransferNonBlocking (SPI_Type base, spi_slave_handle_t handle, spi_transfer_t *xfer)
	Performs a non-blocking SPI slave interrupt transfer. More...

static status_t	SPI_SlaveTransferGetCount (SPI_Type base, spi_slave_handle_t handle, size_t *count)
	Gets the bytes of the SPI interrupt transferred. More...

static void	SPI_SlaveTransferAbort (SPI_Type base, spi_slave_handle_t handle)
	Aborts an SPI slave transfer using interrupt. More...

void	SPI_SlaveTransferHandleIRQ (SPI_Type base, spi_slave_handle_t handle)
	Interrupts a handler for the SPI slave. More...

Data Structure Documentation

struct spi_master_config_t

Data Fields
bool	enableMaster
	Enable SPI at initialization time.

bool	enableStopInWaitMode
	SPI stop in wait mode.

spi_clock_polarity_t	polarity
	Clock polarity.

spi_clock_phase_t	phase
	Clock phase.

spi_shift_direction_t	direction
	MSB or LSB.

spi_ss_output_mode_t	outputMode
	SS pin setting.

spi_pin_mode_t	pinMode
	SPI pin mode select.

uint32_t	baudRate_Bps
	Baud Rate for SPI in Hz.

struct spi_slave_config_t

Data Fields
bool	enableSlave
	Enable SPI at initialization time.

bool	enableStopInWaitMode
	SPI stop in wait mode.

spi_clock_polarity_t	polarity
	Clock polarity.

spi_clock_phase_t	phase
	Clock phase.

spi_shift_direction_t	direction
	MSB or LSB.

struct spi_transfer_t

Data Fields
uint8_t *	txData
	Send buffer.

uint8_t *	rxData
	Receive buffer.

size_t	dataSize
	Transfer bytes.

uint32_t	flags
	SPI control flag, useless to SPI. More...

Field Documentation

uint32_t spi_transfer_t::flags

struct _spi_master_handle

Data Fields
uint8_t *volatile	txData
	Transfer buffer.

uint8_t *volatile	rxData
	Receive buffer.

volatile size_t	txRemainingBytes
	Send data remaining in bytes.

volatile size_t	rxRemainingBytes
	Receive data remaining in bytes.

volatile uint32_t	state
	SPI internal state.

size_t	transferSize
	Bytes to be transferred.

uint8_t	bytePerFrame
	SPI mode, 2bytes or 1byte in a frame.

uint8_t	watermark
	Watermark value for SPI transfer.

spi_master_callback_t	callback
	SPI callback.

void *	userData
	Callback parameter.

Macro Definition Documentation

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

#define SPI_DUMMYDATA (0xFFU)

Enumeration Type Documentation

enum _spi_status

Enumerator
kStatus_SPI_Busy	SPI bus is busy.
kStatus_SPI_Idle	SPI is idle.
kStatus_SPI_Error	SPI error.

enum spi_clock_polarity_t

Enumerator
kSPI_ClockPolarityActiveHigh	Active-high SPI clock (idles low).
kSPI_ClockPolarityActiveLow	Active-low SPI clock (idles high).

enum spi_clock_phase_t

Enumerator
kSPI_ClockPhaseFirstEdge	First edge on SPSCK occurs at the middle of the first cycle of a data transfer.
kSPI_ClockPhaseSecondEdge	First edge on SPSCK occurs at the start of the first cycle of a data transfer.

enum spi_shift_direction_t

Enumerator
kSPI_MsbFirst	Data transfers start with most significant bit.
kSPI_LsbFirst	Data transfers start with least significant bit.

enum spi_ss_output_mode_t

Enumerator
kSPI_SlaveSelectAsGpio	Slave select pin configured as GPIO.
kSPI_SlaveSelectFaultInput	Slave select pin configured for fault detection.
kSPI_SlaveSelectAutomaticOutput	Slave select pin configured for automatic SPI output.

enum spi_pin_mode_t

Enumerator

kSPI_PinModeNormal

Pins operate in normal, single-direction mode.

kSPI_PinModeInput

Bidirectional mode.

Master: MOSI pin is input; Slave: MISO pin is input.

kSPI_PinModeOutput

Bidirectional mode.

Master: MOSI pin is output; Slave: MISO pin is output.

enum spi_data_bitcount_mode_t

Enumerator
kSPI_8BitMode	8-bit data transmission mode
kSPI_16BitMode	16-bit data transmission mode

enum _spi_interrupt_enable

Enumerator
kSPI_RxFullAndModfInterruptEnable	Receive buffer full (SPRF) and mode fault (MODF) interrupt.
kSPI_TxEmptyInterruptEnable	Transmit buffer empty interrupt.
kSPI_MatchInterruptEnable	Match interrupt.

enum _spi_flags

Enumerator
kSPI_RxBufferFullFlag	Read buffer full flag.
kSPI_MatchFlag	Match flag.
kSPI_TxBufferEmptyFlag	Transmit buffer empty flag.
kSPI_ModeFaultFlag	Mode fault flag.

Function Documentation

void SPI_MasterGetDefaultConfig ( spi_master_config_t * config )

The purpose of this API is to get the configuration structure initialized for use in SPI_MasterInit(). User may use the initialized structure unchanged in SPI_MasterInit(), or modify some fields of the structure before calling SPI_MasterInit(). After calling this API, the master is ready to transfer. Example:

spi_master_config_t config;

SPI_MasterGetDefaultConfig(&config);

Parameters

config pointer to master config structure

void SPI_MasterInit	(	SPI_Type *	base,
		const spi_master_config_t *	config,
		uint32_t	srcClock_Hz
	)

The configuration structure can be filled by user from scratch, or be set with default values by SPI_MasterGetDefaultConfig(). After calling this API, the slave is ready to transfer. Example

spi_master_config_t config = {
.baudRate_Bps = 400000,
...
};
SPI_MasterInit(SPI0, &config);

Parameters

base	SPI base pointer
config	pointer to master configuration structure
srcClock_Hz	Source clock frequency.

void SPI_SlaveGetDefaultConfig ( spi_slave_config_t * config )

The purpose of this API is to get the configuration structure initialized for use in SPI_SlaveInit(). Modify some fields of the structure before calling SPI_SlaveInit(). Example:

spi_slave_config_t config;

SPI_SlaveGetDefaultConfig(&config);

Parameters

config pointer to slave configuration structure

void SPI_SlaveInit	(	SPI_Type *	base,
		const spi_slave_config_t *	config
	)

The configuration structure can be filled by user from scratch or be set with default values by SPI_SlaveGetDefaultConfig(). After calling this API, the slave is ready to transfer. Example

spi_slave_config_t config = {
.polarity = kSPIClockPolarity_ActiveHigh;
.phase = kSPIClockPhase_FirstEdge;
.direction = kSPIMsbFirst;
...
};
SPI_MasterInit(SPI0, &config);

Parameters

base	SPI base pointer
config	pointer to master configuration structure

void SPI_Deinit ( SPI_Type * base )

Calling this API resets the SPI module, gates the SPI clock. The SPI module can't work unless calling the SPI_MasterInit/SPI_SlaveInit to initialize module.

Parameters

base	SPI base pointer

static void SPI_Enable	(	SPI_Type *	base,
		bool	enable
	)

inlinestatic

Parameters

base	SPI base pointer
enable	pass true to enable module, false to disable module

uint32_t SPI_GetStatusFlags ( SPI_Type * base )

Parameters

base	SPI base pointer

Returns: SPI Status, use status flag to AND _spi_flags could get the related status.

void SPI_EnableInterrupts	(	SPI_Type *	base,
		uint32_t	mask
	)

Parameters

base	SPI base pointer
mask	SPI interrupt source. The parameter can be any combination of the following values: kSPI_RxFullAndModfInterruptEnable kSPI_TxEmptyInterruptEnable kSPI_MatchInterruptEnable kSPI_RxFifoNearFullInterruptEnable kSPI_TxFifoNearEmptyInterruptEnable

void SPI_DisableInterrupts	(	SPI_Type *	base,
		uint32_t	mask
	)

Parameters

base	SPI base pointer
mask	SPI interrupt source. The parameter can be any combination of the following values: kSPI_RxFullAndModfInterruptEnable kSPI_TxEmptyInterruptEnable kSPI_MatchInterruptEnable kSPI_RxFifoNearFullInterruptEnable kSPI_TxFifoNearEmptyInterruptEnable

static uint32_t SPI_GetDataRegisterAddress ( SPI_Type * base )

inlinestatic

This API is used to provide a transfer address for the SPI DMA transfer configuration.

Parameters

base	SPI base pointer

Returns: data register address

void SPI_MasterSetBaudRate	(	SPI_Type *	base,
		uint32_t	baudRate_Bps,
		uint32_t	srcClock_Hz
	)

This is only used in master.

Parameters

base	SPI base pointer
baudRate_Bps	baud rate needed in Hz.
srcClock_Hz	SPI source clock frequency in Hz.

static void SPI_SetMatchData	(	SPI_Type *	base,
		uint32_t	matchData
	)

inlinestatic

The match data is a hardware comparison value. When the value received in the SPI receive data buffer equals the hardware comparison value, the SPI Match Flag in the S register (S[SPMF]) sets. This can also generate an interrupt if the enable bit sets.

Parameters

base	SPI base pointer
matchData	Match data.

void SPI_WriteBlocking	(	SPI_Type *	base,
		uint8_t *	buffer,
		size_t	size
	)

Note: This function blocks via polling until all bytes have been sent.

Parameters

base	SPI base pointer
buffer	The data bytes to send
size	The number of data bytes to send

void SPI_WriteData	(	SPI_Type *	base,
		uint16_t	data
	)

Parameters

base	SPI base pointer
data	needs to be write.

uint16_t SPI_ReadData ( SPI_Type * base )

Parameters

base	SPI base pointer

Returns: Data in the register.

void SPI_MasterTransferCreateHandle	(	SPI_Type *	base,
		spi_master_handle_t *	handle,
		spi_master_callback_t	callback,
		void *	userData
	)

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

Parameters

base	SPI peripheral base address.
handle	SPI handle pointer.
callback	Callback function.
userData	User data.

status_t SPI_MasterTransferBlocking	(	SPI_Type *	base,
		spi_transfer_t *	xfer
	)

Parameters

base	SPI base pointer
xfer	pointer to spi_xfer_config_t structure

Return values

kStatus_Success	Successfully start a transfer.
kStatus_InvalidArgument	Input argument is invalid.

status_t SPI_MasterTransferNonBlocking	(	SPI_Type *	base,
		spi_master_handle_t *	handle,
		spi_transfer_t *	xfer
	)

Note: The API immediately returns after transfer initialization is finished. Call SPI_GetStatusIRQ() to get the transfer status.; If using the SPI with FIFO for the interrupt transfer, the transfer size is the integer times of the watermark. Otherwise, the last data may be lost because it cannot generate an interrupt request. Users can also call the functional API to get the last received data.

Parameters

base	SPI peripheral base address.
handle	pointer to spi_master_handle_t structure which stores the transfer state
xfer	pointer to spi_xfer_config_t structure

Return values

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

status_t SPI_MasterTransferGetCount	(	SPI_Type *	base,
		spi_master_handle_t *	handle,
		size_t *	count
	)

Parameters

base	SPI peripheral base address.
handle	Pointer to SPI transfer handle, this should be a static variable.
count	Transferred bytes of SPI master.

Return values

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

void SPI_MasterTransferAbort	(	SPI_Type *	base,
		spi_master_handle_t *	handle
	)

Parameters

base	SPI peripheral base address.
handle	Pointer to SPI transfer handle, this should be a static variable.

void SPI_MasterTransferHandleIRQ	(	SPI_Type *	base,
		spi_master_handle_t *	handle
	)

Parameters

base	SPI peripheral base address.
handle	pointer to spi_master_handle_t structure which stores the transfer state.

void SPI_SlaveTransferCreateHandle	(	SPI_Type *	base,
		spi_slave_handle_t *	handle,
		spi_slave_callback_t	callback,
		void *	userData
	)

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

Parameters

base	SPI peripheral base address.
handle	SPI handle pointer.
callback	Callback function.
userData	User data.

static status_t SPI_SlaveTransferNonBlocking	(	SPI_Type *	base,
		spi_slave_handle_t *	handle,
		spi_transfer_t *	xfer
	)

inlinestatic

Note: The API returns immediately after the transfer initialization is finished. Call SPI_GetStatusIRQ() to get the transfer status.; If using the SPI with FIFO for the interrupt transfer, the transfer size is the integer times the watermark. Otherwise, the last data may be lost because it cannot generate an interrupt request. Call the functional API to get the last several receive data.

Parameters

base	SPI peripheral base address.
handle	pointer to spi_master_handle_t structure which stores the transfer state
xfer	pointer to spi_xfer_config_t structure

Return values

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

static status_t SPI_SlaveTransferGetCount	(	SPI_Type *	base,
		spi_slave_handle_t *	handle,
		size_t *	count
	)

inlinestatic

Parameters

base	SPI peripheral base address.
handle	Pointer to SPI transfer handle, this should be a static variable.
count	Transferred bytes of SPI slave.

Return values

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

static void SPI_SlaveTransferAbort	(	SPI_Type *	base,
		spi_slave_handle_t *	handle
	)

inlinestatic

Parameters

base	SPI peripheral base address.
handle	Pointer to SPI transfer handle, this should be a static variable.

void SPI_SlaveTransferHandleIRQ	(	SPI_Type *	base,
		spi_slave_handle_t *	handle
	)

Parameters

base	SPI peripheral base address.
handle	pointer to spi_slave_handle_t structure which stores the transfer state

Overview

Typical use case

SPI master transfer using an interrupt method

SPI Send/receive using a DMA method

Data Structures

Macros

Typedefs

Enumerations

Driver version

Initialization and deinitialization

Status

Interrupts

DMA Control

Bus Operations

Transactional

Data Structure Documentation

Data Fields

Data Fields

Data Fields

Field Documentation

Data Fields

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation