Introduction

This module contains APIs to program and use the MIBSPI module. The APIs can be used by other drivers to get access to MIBSPI and also by application to initiate data transfer operation.

Sub Modules
	MIBSPI Feature defines
	MIBSPI_FEATURE_* macros indicate presence of a particular features in SPI instance on the given SoC. Used internally in driver.

Files
file	mibspi/v0/mibspi.h
	MIBSPI Driver API/interface file.

Data Structures
struct	MIBSPI_HW_Stats
	SPI Driver Statistics. More...

struct	MIBSPI_Stats
	MIBSPI_Stats data structure is used with SPI_getStats() to get driver statistics. More...

struct	MIBSPI_SlaveProfile
	MIBSPI slave profile Parameters. More...

struct	MIBSPI_SlaveModeParams
	MIBSPI slave mode Parameters. More...

struct	MIBSPI_DriverDmaInfo
	SPI Driver Info for Master. More...

struct	MIBSPI_DMAReqlineCfg
	MIBSPI Driver DMA request line tie up for the SoC. More...

struct	MIBSPI_DMAXferAddrInfo
	MIBSPI Driver DMA module Address info definition. More...

struct	MIBSPI_DMAXferSizeInfo
	MIBSPI Driver DMA module Transfer size definition. More...

struct	MIBSPI_DMAXferInfo
	MIBSPI Driver DMA module Transfer Info definition. More...

struct	MIBSPI_Transaction
	MIBSPI_Transaction data structure is used with MIBSPI_transfer(). It indicates how many MIBSPI_FrameFormat frames are sent and received from the buffers pointed to txBuf and rxBuf. More...

struct	MIBSPI_TransactionState
	MIBSPI Driver DMA module Tranaction state definition. More...

struct	MIBSPI_MasterModeParams
	MIBSPI master Parameters. More...

struct	MIBSPI_EDMAChParams
	MIBSPI EDMA Parameters. More...

struct	MIBSPI_OpenParams
	MIBSPI Parameters. More...

struct	MIBSPI_Attrs
	MIBSPI Driver HW configuration. More...

struct	MIBSPI_Object
	SPI Driver Object. More...

struct	MIBSPI_Config
	MIBSPI Instance configuration. More...

Functions
void	MIBSPI_init (void)
	This function initializes the MIBSPI module. More...

void	MIBSPI_deinit (void)
	This function de-initializes the MIBSPI module. More...

MIBSPI_Handle	MIBSPI_open (uint32_t index, MIBSPI_OpenParams *params)
	This function opens a given instance of the MIBSPI peripheral. More...

void	MIBSPI_close (MIBSPI_Handle handle)
	Function to close a instance of a MIBSPI peripheral specified by the MIBSPI handle. More...

int32_t	MIBSPI_transfer (MIBSPI_Handle handle, MIBSPI_Transaction *transaction)
	Function to perform MIBSPI transactions on a instance of a MIBSPI peripheral specified by the MIBSPI handle for a specific slave. More...

void	MIBSPI_transferCancel (MIBSPI_Handle handle)
	Function to cancel MIBSPI transactions on instance of a MIBSPI peripheral specified by the MIBSPI handle. More...

int32_t	MIBSPI_enableLoopback (MIBSPI_Handle handle, MIBSPI_LoopBackType loopbacktype)
	This function enables the Loopback mode for self test. Loopback is SPI master only feature. More...

int32_t	MIBSPI_disableLoopback (MIBSPI_Handle handle)
	This function disable the Loopback mode. More...

int32_t	MIBSPI_setClockPhasePolarity (MIBSPI_Handle handle, uint8_t clockFmt)
	This function sets the Polarity and phase for MibSpi as requested. More...

int32_t	MIBSPI_getDrvStats (MIBSPI_Handle handle, MIBSPI_Stats *ptrStats)
	Get SPI driver internal stats. More...

void	MIBSPI_dmaDoneCb (MIBSPI_Handle mibspiHandle)
	Function invoked by the SoC DMA implementation to the driver on DMA transfer completion. More...

static void	MIBSPI_Params_init (MIBSPI_OpenParams *openPrms)
	Function to initialize the MIBSPI_OpenParams struct to its defaults. More...

Typedefs
typedef void *	MIBSPI_Handle
	A handle that is returned from a MIBSPI_open() call. More...

typedef void(*	MIBSPI_CallbackFxn) (MIBSPI_Handle handle, MIBSPI_Transaction *transaction)
	The definition of a callback function used by the SPI driver when used in MIBSPI_MODE_CALLBACK. More...

Enumerations
enum	MIBSPI_EdmaCBFlag_e { MIBSPI_NONE_EDMA_CALLBACK_OCCURED = 0x0U, MIBSPI_TX_EDMA_CALLBACK_OCCURED = 0x1U, MIBSPI_RX_EDMA_CALLBACK_OCCURED = 0x2U }
	Enum used to track status of EDMA callbacks internally in driver. More...

enum	MIBSPI_XferErr_e { MIBSPI_XFER_ERR_NONE, MIBSPI_XFER_ERR_RXOR, MIBSPI_XFER_ERR_BE, MIBSPI_XFER_ERR_TIMEOUT }
	SPI_v3 transfer error code. More...

enum	MIBSPI_Status { MIBSPI_TRANSFER_COMPLETED = 0, MIBSPI_TRANSFER_STARTED, MIBSPI_TRANSFER_CANCELED, MIBSPI_TRANSFER_FAILED, MIBSPI_TRANSFER_CSN_DEASSERT, MIBSPI_TRANSFER_TIMEOUT }
	Status codes that are set by the SPI driver. More...

enum	MIBSPI_PinMode { MIBSPI_PINMODE_3PIN = 0, MIBSPI_PINMODE_4PIN_CS = 1 }
	Definitions for MIBSPI Pins Operation Mode. More...

enum	MIBSPI_DataShiftFmt { MIBSPI_MSB_FIRST = 0, MIBSPI_LSB_FIRST = 1 }
	Definitions for MIBSPI Data shift format. More...

enum	MIBSPI_LoopBackType { MIBSPI_LOOPBK_DIGITAL = 0, MIBSPI_LOOPBK_ANALOG = 1, MIBSPI_LOOPBK_NONE = 2 }
	Definitions for MIBSPI loopback modes. More...

enum	MIBSPI_Mode { MIBSPI_MASTER = 0, MIBSPI_SLAVE = 1 }
	Definitions for various SPI modes of operation. More...

enum	MIBSPI_FrameFormat { MIBSPI_POL0_PHA0 = 0, MIBSPI_POL0_PHA1 = 1, MIBSPI_POL1_PHA0 = 2, MIBSPI_POL1_PHA1 = 3 }
	Definitions for various SPI data frame formats. More...

enum	MIBSPI_TransferMode { MIBSPI_MODE_BLOCKING, MIBSPI_MODE_CALLBACK }
	MIBSPI transfer mode determines the whether the MIBSPI controller operates synchronously or asynchronously. In MIBSPI_MODE_BLOCKING mode MIBSPI_transfer() blocks code execution until the MIBSPI transaction has completed. In MIBSPI_MODE_CALLBACK MIBSPI_transfer() does not block code execution and instead calls a MIBSPI_CallbackFxn callback function when the transaction has completed. More...

enum	MIBSPI_DmaCtrlChType { MIBSPI_DMACTRL_CH_TX, MIBSPI_DMACTRL_CH_RX, MIBSPI_DMACTRL_CH_BOTH }
	Definitions for DMA controller channel type. More...

Macros
#define	MIBSPI_RAM_BUFFER_MODE (7U)
	MibSPI RAM buffer mode. More...

#define	MIBSPI_SLAVEMODE_TRANS_GROUP (0U)
	Transfer group used in slave mode. More...

#define	MIBSPI_INT_LEVEL (1U)
	MIBSPI interrupt level. More...

#define	MIBSPI_RAM_MAX_ELEM (128U)
	Maximum element in MibSPI RAM. For 8bit data size, the maximum transfer size is 64 bytes For 16bit data size, the maximum transfer size is 128 bytes. More...

#define	MIBSPI_SLAVE_MAX (3U)
	Max number of slaves supported when MibSPI is configured as master. More...

#define	MIBSPI_DMA_REQLINE_MAX (3U)
	Max number of DMA REQ lines supported by MIBSPI. More...

#define	MIBSPI_MAX_CS (MIBSPI_SLAVE_MAX)
	Maximum CS supported for the device. More...

#define	MIBSPI_NUM_TRANS_GROUP (8U)
	Max number of transport group. More...

#define	MIBSPI_NUM_DMA_GROUP (8U)
	Max number of DMA group. More...

#define	MIBSPI_CS_NONE (0xFFU)
	CS configuration value when none of the CS is activated. More...

Macro Definition Documentation

◆ MIBSPI_RAM_BUFFER_MODE

#define MIBSPI_RAM_BUFFER_MODE (7U)

MibSPI RAM buffer mode.

◆ MIBSPI_SLAVEMODE_TRANS_GROUP

#define MIBSPI_SLAVEMODE_TRANS_GROUP (0U)

Transfer group used in slave mode.

◆ MIBSPI_INT_LEVEL

#define MIBSPI_INT_LEVEL (1U)

MIBSPI interrupt level.

◆ MIBSPI_RAM_MAX_ELEM

#define MIBSPI_RAM_MAX_ELEM (128U)

Maximum element in MibSPI RAM. For 8bit data size, the maximum transfer size is 64 bytes For 16bit data size, the maximum transfer size is 128 bytes.

◆ MIBSPI_SLAVE_MAX

#define MIBSPI_SLAVE_MAX (3U)

Max number of slaves supported when MibSPI is configured as master.

◆ MIBSPI_DMA_REQLINE_MAX

#define MIBSPI_DMA_REQLINE_MAX (3U)

Max number of DMA REQ lines supported by MIBSPI.

◆ MIBSPI_MAX_CS

#define MIBSPI_MAX_CS (MIBSPI_SLAVE_MAX)

Maximum CS supported for the device.

◆ MIBSPI_NUM_TRANS_GROUP

#define MIBSPI_NUM_TRANS_GROUP (8U)

Max number of transport group.

◆ MIBSPI_NUM_DMA_GROUP

#define MIBSPI_NUM_DMA_GROUP (8U)

Max number of DMA group.

◆ MIBSPI_CS_NONE

#define MIBSPI_CS_NONE (0xFFU)

CS configuration value when none of the CS is activated.

Typedef Documentation

◆ MIBSPI_Handle

typedef void* MIBSPI_Handle

A handle that is returned from a MIBSPI_open() call.

◆ MIBSPI_CallbackFxn

typedef void(* MIBSPI_CallbackFxn) (MIBSPI_Handle handle, MIBSPI_Transaction *transaction)

The definition of a callback function used by the SPI driver when used in MIBSPI_MODE_CALLBACK.

Parameters

handle	MIBSPI_Handle
transaction*	MIBSPI_Transaction*

Enumeration Type Documentation

◆ MIBSPI_EdmaCBFlag_e

enum MIBSPI_EdmaCBFlag_e

Enum used to track status of EDMA callbacks internally in driver.

Enumerator
MIBSPI_NONE_EDMA_CALLBACK_OCCURED	Flag to indicate that Transmission EDMA callback has occured
MIBSPI_TX_EDMA_CALLBACK_OCCURED	Flag to indicate that Transmission EDMA callback has occured
MIBSPI_RX_EDMA_CALLBACK_OCCURED	Flag to indicate that Reception EDMA callback has occured

◆ MIBSPI_XferErr_e

enum MIBSPI_XferErr_e

SPI_v3 transfer error code.

Enumerator
MIBSPI_XFER_ERR_NONE
MIBSPI_XFER_ERR_RXOR
MIBSPI_XFER_ERR_BE
MIBSPI_XFER_ERR_TIMEOUT

◆ MIBSPI_Status

enum MIBSPI_Status

Status codes that are set by the SPI driver.

Enumerator
MIBSPI_TRANSFER_COMPLETED
MIBSPI_TRANSFER_STARTED
MIBSPI_TRANSFER_CANCELED
MIBSPI_TRANSFER_FAILED
MIBSPI_TRANSFER_CSN_DEASSERT
MIBSPI_TRANSFER_TIMEOUT

◆ MIBSPI_PinMode

enum MIBSPI_PinMode

Definitions for MIBSPI Pins Operation Mode.

Enumerator
MIBSPI_PINMODE_3PIN	3 Pin operation Mode
MIBSPI_PINMODE_4PIN_CS	4 Pin operation Mode with CS signal

◆ MIBSPI_DataShiftFmt

enum MIBSPI_DataShiftFmt

Definitions for MIBSPI Data shift format.

Enumerator
MIBSPI_MSB_FIRST	MSB shift out first
MIBSPI_LSB_FIRST	LSB shift out first

◆ MIBSPI_LoopBackType

enum MIBSPI_LoopBackType

Definitions for MIBSPI loopback modes.

Enumerator
MIBSPI_LOOPBK_DIGITAL	MIBSPI digital loopback mode
MIBSPI_LOOPBK_ANALOG	MIBSPI analog loopback mode
MIBSPI_LOOPBK_NONE	MIBSPI loopback disable

◆ MIBSPI_Mode

enum MIBSPI_Mode

Definitions for various SPI modes of operation.

Enumerator
MIBSPI_MASTER	SPI in master mode
MIBSPI_SLAVE	SPI in slave mode

◆ MIBSPI_FrameFormat

enum MIBSPI_FrameFormat

Definitions for various SPI data frame formats.

Enumerator
MIBSPI_POL0_PHA0	SPI mode Polarity 0 Phase 0
MIBSPI_POL0_PHA1	SPI mode Polarity 0 Phase 1
MIBSPI_POL1_PHA0	SPI mode Polarity 1 Phase 0
MIBSPI_POL1_PHA1	SPI mode Polarity 1 Phase 1

◆ MIBSPI_TransferMode

enum MIBSPI_TransferMode

MIBSPI transfer mode determines the whether the MIBSPI controller operates synchronously or asynchronously. In MIBSPI_MODE_BLOCKING mode MIBSPI_transfer() blocks code execution until the MIBSPI transaction has completed. In MIBSPI_MODE_CALLBACK MIBSPI_transfer() does not block code execution and instead calls a MIBSPI_CallbackFxn callback function when the transaction has completed.

Enumerator
MIBSPI_MODE_BLOCKING	MIBSPI_transfer() blocks execution. This mode can only be used when called within a Task context
MIBSPI_MODE_CALLBACK	MIBSPI_transfer() does not block code execution and will call a MIBSPI_CallbackFxn. This mode can be used in a Task, Swi, or Hwi context.

◆ MIBSPI_DmaCtrlChType

enum MIBSPI_DmaCtrlChType

Definitions for DMA controller channel type.

Enumerator
MIBSPI_DMACTRL_CH_TX	Configure DMA channel as transmit only
MIBSPI_DMACTRL_CH_RX	Configure DMA channel as receive only
MIBSPI_DMACTRL_CH_BOTH	Configure DMA channel as transmit and receive

Function Documentation

◆ MIBSPI_init()

void MIBSPI_init ( void )

This function initializes the MIBSPI module.

◆ MIBSPI_deinit()

void MIBSPI_deinit ( void )

This function de-initializes the MIBSPI module.

◆ MIBSPI_open()

MIBSPI_Handle MIBSPI_open	(	uint32_t	index,
		MIBSPI_OpenParams *	params
	)

This function opens a given instance of the MIBSPI peripheral.

Precondition: MIBSPI controller has been initialized using MIBSPI_init()

Parameters

index	Id of the SPI instance.
params	Pointer to an parameter block, if NULL it will use default values.

Returns: A MIBSPI_Handle on success or a NULL on an error or if it has been opened already.

See also: MIBSPI_init(); MIBSPI_close(); MIBSPI_Params_init()

◆ MIBSPI_close()

void MIBSPI_close ( MIBSPI_Handle handle )

Function to close a instance of a MIBSPI peripheral specified by the MIBSPI handle.

Precondition: MIBSPI_open() has to be called first.

Parameters

handle MIBSPI_Handle returned from MIBSPI_open()

See also: MIBSPI_open()

◆ MIBSPI_transfer()

int32_t MIBSPI_transfer	(	MIBSPI_Handle	handle,
		MIBSPI_Transaction *	transaction
	)

Function to perform MIBSPI transactions on a instance of a MIBSPI peripheral specified by the MIBSPI handle for a specific slave.

If the MIBSPI is in MIBSPI_MASTER mode, it will immediately start the transaction. If the MIBSPI is in MIBSPI_SLAVE mode, it prepares itself for a transaction with a SPI master.

In MIBSPI_MODE_BLOCKING, MIBSPI_transfer will block task execution until the transaction has completed.

In MIBSPI_MODE_CALLBACK, MIBSPI_transfer() does not block task execution and calls a MIBSPI_CallbackFxn. This makes the MIBSPI_tranfer() safe to be used within a Task, Swi, or Hwi context. The MIBSPI_Transaction structure must stay persistent until the MIBSPI_transfer function has completed!

Parameters

handle	MIBSPI_Handle
transaction	A pointer to a MIBSPI_Transaction. All of the fields within transaction except MIBSPI_Transaction.count and MIBSPI_Transaction.status are WO (write-only) unless otherwise noted in the driver implementations. If a transaction timeout has occured, MIBSPI_Transaction.count will contain the number of frames that were transferred.

Returns: true if started successfully; else false

See also: MIBSPI_open; MIBSPI_transferCancel

◆ MIBSPI_transferCancel()

void MIBSPI_transferCancel ( MIBSPI_Handle handle )

Function to cancel MIBSPI transactions on instance of a MIBSPI peripheral specified by the MIBSPI handle.

In MIBSPI_MODE_BLOCKING, MIBSPI_transferCancel has no effect.

In MIBSPI_MODE_CALLBACK, MIBSPI_transferCancel() will stop an SPI transfer if if one is in progress. If a transaction was in progress, its callback function will be called in context from which this API is called from. The MIBSPI_CallbackFxn function can determine if the transaction was successful or not by reading the MIBSPI_Status status value in the MIBSPI_Transaction structure.

Parameters

handle MIBSPI_Handle

See also: MIBSPI_open; MIBSPI_transfer

◆ MIBSPI_enableLoopback()

int32_t MIBSPI_enableLoopback	(	MIBSPI_Handle	handle,
		MIBSPI_LoopBackType	loopbacktype
	)

This function enables the Loopback mode for self test. Loopback is SPI master only feature.

Parameters

[in]	handle	MIBSPI_Handle
[in]	loopbacktype	Digital or Analog

Returns: On success returns SystemP_SUCCESS. Negative values indicate unsuccessful operations.

◆ MIBSPI_disableLoopback()

int32_t MIBSPI_disableLoopback ( MIBSPI_Handle handle )

This function disable the Loopback mode.

Parameters

[in] handle MIBSPI_Handle

Returns: On success returns SystemP_SUCCESS. Negative values indicate unsuccessful operations.

◆ MIBSPI_setClockPhasePolarity()

int32_t MIBSPI_setClockPhasePolarity	(	MIBSPI_Handle	handle,
		uint8_t	clockFmt
	)

This function sets the Polarity and phase for MibSpi as requested.

Parameters

[in]	handle	MIBSPI_Handle MibSpiSPI
[in]	clockFmt	MIBSPI functional mode (clock/polarity)

Returns: On success returns SystemP_SUCCESS. Negative values indicate unsuccessful operations.

◆ MIBSPI_getDrvStats()

int32_t MIBSPI_getDrvStats	(	MIBSPI_Handle	handle,
		MIBSPI_Stats *	ptrStats
	)

Get SPI driver internal stats.

Parameters

[in]	handle	SPI device handle
[in]	ptrStats	pointer to SPI driver stats structure

Returns: On success returns SystemP_SUCCESS. Negative values indicate unsuccessful operations.

See also: MIBSPI_open; MIBSPI_transfer

◆ MIBSPI_dmaDoneCb()

void MIBSPI_dmaDoneCb ( MIBSPI_Handle mibspiHandle )

Function invoked by the SoC DMA implementation to the driver on DMA transfer completion.

Parameters

mibspiHandle A MIBSPI_Handle

◆ MIBSPI_Params_init()

static void MIBSPI_Params_init ( MIBSPI_OpenParams * openPrms )

inlinestatic

Function to initialize the MIBSPI_OpenParams struct to its defaults.

Parameters

openPrms Pointer to MIBSPI_OpenParams structure for initialization

Variable Documentation

◆ gMibspiConfig

MIBSPI_Config gMibspiConfig[]

extern

Externally defined driver configuration array.

◆ gMibspiConfigNum

uint32_t gMibspiConfigNum

extern

Externally defined driver configuration array size.

Introduction

Sub Modules

Files

Data Structures

Functions

Typedefs

Enumerations

Macros

Macro Definition Documentation

◆ MIBSPI_RAM_BUFFER_MODE

◆ MIBSPI_SLAVEMODE_TRANS_GROUP

◆ MIBSPI_INT_LEVEL

◆ MIBSPI_RAM_MAX_ELEM

◆ MIBSPI_SLAVE_MAX

◆ MIBSPI_DMA_REQLINE_MAX

◆ MIBSPI_MAX_CS

◆ MIBSPI_NUM_TRANS_GROUP

◆ MIBSPI_NUM_DMA_GROUP

◆ MIBSPI_CS_NONE

Typedef Documentation

◆ MIBSPI_Handle

◆ MIBSPI_CallbackFxn

Enumeration Type Documentation

◆ MIBSPI_EdmaCBFlag_e

◆ MIBSPI_XferErr_e

◆ MIBSPI_Status

◆ MIBSPI_PinMode

◆ MIBSPI_DataShiftFmt

◆ MIBSPI_LoopBackType

◆ MIBSPI_Mode

◆ MIBSPI_FrameFormat

◆ MIBSPI_TransferMode

◆ MIBSPI_DmaCtrlChType

Function Documentation

◆ MIBSPI_init()

◆ MIBSPI_deinit()

◆ MIBSPI_open()

◆ MIBSPI_close()

◆ MIBSPI_transfer()

◆ MIBSPI_transferCancel()

◆ MIBSPI_enableLoopback()

◆ MIBSPI_disableLoopback()

◆ MIBSPI_setClockPhasePolarity()

◆ MIBSPI_getDrvStats()

◆ MIBSPI_dmaDoneCb()

◆ MIBSPI_Params_init()

Variable Documentation

◆ gMibspiConfig

◆ gMibspiConfigNum