Introduction

MCSPI LLD Driver API/interface file.

Data Structures
struct	MCSPI_Transaction
	Data structure used with MCSPI_transfer() More...

struct	MCSPI_ExtendedParams
	Data structure used with MCSPI_lld_read(), MCSPI_lld_readIntr(), MCSPI_lld_readDma(), MCSPI_lld_write(), MCSPI_lld_writeIntr, MCSPI_lld_writeDma, MCSPI_lld_readWrite(), MCSPI_lld_readWriteIntr(), MCSPI_lld_readWriteDma(). MCSPI ExtendedParams to be used in case, one's don't want to use default parameters, else pass NULL. More...

struct	MCSPI_ChConfig
	MCSPI configuration parameters for the channel. More...

struct	MCSPI_ChObject
	MCSPI channel object. More...

struct	MCSPILLD_InitObject
	MCSPI driver initialization object. More...

struct	MCSPILLD_Object
	MCSPI driver object. More...

Macros
#define	MCSPI_MAX_NUM_CHANNELS (4U)
	Max number of channels/Chip Select (CS) supported. More...

#define	MCSPI_ERROR_TX_UNDERFLOW (0x00000001U)
	McSPI error macro's. More...

#define	MCSPI_ERROR_RX_OVERFLOW (0x00000002U)

#define	MCSPI_MAX_CLK_DIVIDER_SUPPORTED (4096U)

#define	MCSPI_FIFO_LENGTH (64U)
	Total length of FIFO for both TX/RX. More...

#define	MCSPI_RX_FIFO_ENABLE
	McSPI peripheral Rx FIFO is enabled. More...

#define	MCSPI_RX_FIFO_DISABLE
	McSPI peripheral Rx FIFO is disabled. More...

#define	MCSPI_TX_FIFO_ENABLE
	McSPI peripheral Tx FIFO is enabled. More...

#define	MCSPI_TX_FIFO_DISABLE
	McSPI peripheral Tx FIFO is disabled. More...

#define	MCSPI_REG_OFFSET (0x14U)
	McSPI Register Offset for MCSPI_CHxCONF, MCSPI_CHxSTAT, MCSPI_CHxCTRL, MCSPI_TXx and MCSPI_RXx register set. More...

#define	MCSPI_CHCONF(x)
	Base address of McSPI_CHCONF(x) More...

#define	MCSPI_CHSTAT(x)
	Base address of McSPI_CHSTAT(x) More...

#define	MCSPI_CHCTRL(x)
	Base address of McSPI_CHCTRL(x) More...

#define	MCSPI_CHTX(x)
	Base address of McSPI_CHTX(x) More...

#define	MCSPI_CHRX(x)
	Base address of McSPI_CHRX(x) More...

#define	MCSPI_CLKD_MASK (0x0FU)

#define	MCSPI_IRQSTATUS_CLEAR_ALL
	Bit mask to clear all status bits. More...

Return status
#define	MCSPI_STATUS_SUCCESS ((int32_t)0)
	Return status when the API execution was successful. More...

#define	MCSPI_STATUS_FAILURE ((int32_t)-1)
	Return status when the API execution was not successful due to a failure. More...

#define	MCSPI_TIMEOUT ((int32_t)-2)
	Return status when the API execution was not successful due to a time out. More...

#define	MCSPI_INVALID_PARAM ((int32_t)-3)
	Return status when the API execution failed due invalid parameters. More...

#define	MCSPI_STATUS_BUSY ((int32_t)-4)
	Return status when the API execution failed due to driver busy. More...

#define	MCSPI_INVALID_STATE ((int32_t)-5)
	Return status when the API execution failed due to invalid state. More...

Timeout values
#define	MCSPI_NO_WAIT ((uint32_t)0)
	Value to use when needing a timeout of zero or NO timeout, return immediately on resource not available. More...

#define	MCSPI_WAIT_FOREVER ((uint32_t)-1)
	Value to use when needing a timeout of infinity or wait forver until resource is available. More...

MCSPI Driver states
#define	MCSPI_STATE_RESET ((uint32_t)0U)
	MCSPI driver is in Reset State prior to driver init and post driver deinit. More...

#define	MCSPI_STATE_READY ((uint32_t)1U)
	MCSPI driver accepts runtime APIs only Ready State, otherwise return error. More...

#define	MCSPI_STATE_BUSY ((uint32_t)2U)
	MCSPI driver is busy performing operation with peripherals, return error when APIs are invoked. More...

#define	MCSPI_STATE_ERROR ((uint32_t)3U)
	MCSPI driver ran into error, returns error for all APIs other than deinit in this state. More...

Channel Id
Values used to determine the channel number used for McSPI communication. This determines which Chip Select (CS) line to use
#define	MCSPI_CHANNEL_0 (0U)

#define	MCSPI_CHANNEL_1 (1U)

#define	MCSPI_CHANNEL_2 (2U)

#define	MCSPI_CHANNEL_3 (3U)

Operating Mode
Values used to determine the McSPI driver operation.
#define	MCSPI_OPER_MODE_POLLED (0U)

#define	MCSPI_OPER_MODE_INTERRUPT (1U)

#define	MCSPI_OPER_MODE_DMA (2U)

Transfer Status Code
Status codes that are set by the MCSPI driver
#define	MCSPI_TRANSFER_COMPLETED ((int32_t)0U)

#define	MCSPI_TRANSFER_STARTED ((int32_t)1U)

#define	MCSPI_TRANSFER_CANCELLED ((int32_t)2U)

#define	MCSPI_TRANSFER_FAILED ((int32_t)3U)

#define	MCSPI_TRANSFER_CSN_DEASSERT ((int32_t)4U)

#define	MCSPI_TRANSFER_TIMEOUT ((int32_t)5U)

Modes of Operation
Definitions for various MCSPI modes of operation The MCSPI driver operates in both controller and SPI peripheral modes. Logically, the implementation is identical, however the difference between these two modes is driven by hardware. The default mode is MCSPI_MS_MODE_CONTROLLER, but can be set to peripheral mode by setting MCSPI_OpenParams.msMode to MCSPI_MS_MODE_PERIPHERAL in the parameters passed to MCSPI_open().
#define	MCSPI_MS_MODE_CONTROLLER (CSL_MCSPI_MODULCTRL_MS_MASTER)
	The module generates the clock and CS. More...

#define	MCSPI_MS_MODE_PERIPHERAL (CSL_MCSPI_MODULCTRL_MS_SLAVE)
	The module receives the clock and CS. More...

Frame Format
Definitions for various SPI data frame formats POL0 = SPICLK is held low during the INACTIVE state POL1 = SPICLK is held high during the INACTIVE state PHA0 = Data are latched on odd-numbered edges of SPICLK PHA1 = Data are latched on even-numbered edges of SPICLK
#define	MCSPI_FF_POL0_PHA0 (0U)

#define	MCSPI_FF_POL0_PHA1 (1U)

#define	MCSPI_FF_POL1_PHA0 (2U)

#define	MCSPI_FF_POL1_PHA1 (3U)

Chip-select Polarity
Type for SPI Chip Select Polarity and Clock Idle Level
#define	MCSPI_CS_POL_HIGH (CSL_MCSPI_CH0CONF_EPOL_ACTIVEHIGH)
	SPIEN (CS) is held high during the ACTIVE state. More...

#define	MCSPI_CS_POL_LOW (CSL_MCSPI_CH0CONF_EPOL_ACTIVELOW)
	SPIEN (CS) is held low during the ACTIVE state. More...

Transmit-Receive Modes

#define	MCSPI_TR_MODE_TX_RX (CSL_MCSPI_CH0CONF_TRM_TRANSRECEI)

#define	MCSPI_TR_MODE_RX_ONLY (CSL_MCSPI_CH0CONF_TRM_RECEIVONLY)

#define	MCSPI_TR_MODE_TX_ONLY (CSL_MCSPI_CH0CONF_TRM_TRANSONLY)

Input Select

#define	MCSPI_IS_D0 (CSL_MCSPI_CH0CONF_IS_LINE0)
	Data line 0 (SPIDAT[0]) selected for reception. More...

#define	MCSPI_IS_D1 (CSL_MCSPI_CH0CONF_IS_LINE1)
	Data line 1 (SPIDAT[1]) selected for reception. More...

Transmission Enable for Data Line

#define	MCSPI_DPE_ENABLE (CSL_MCSPI_CH0CONF_DPE0_ENABLED)
	Data line selected for transmission. More...

#define	MCSPI_DPE_DISABLE (CSL_MCSPI_CH0CONF_DPE0_DISABLED)
	No transmission on Data Line. More...

Peripheral Chip-select Signal Select

#define	MCSPI_SLV_CS_SELECT_0 (CSL_MCSPI_CH0CONF_SPIENSLV_SPIEN0)

#define	MCSPI_SLV_CS_SELECT_1 (CSL_MCSPI_CH0CONF_SPIENSLV_SPIEN1)

#define	MCSPI_SLV_CS_SELECT_2 (CSL_MCSPI_CH0CONF_SPIENSLV_SPIEN2)

#define	MCSPI_SLV_CS_SELECT_3 (CSL_MCSPI_CH0CONF_SPIENSLV_SPIEN3)

Start-bit Polarity

#define	MCSPI_SB_POL_HIGH (CSL_MCSPI_CH0CONF_SBPOL_HIGHLEVEL)
	SStart-bit polarity is held to 1 during MCSPI transfer. More...

#define	MCSPI_SB_POL_LOW (CSL_MCSPI_CH0CONF_SBPOL_LOWLEVEL)
	Start-bit polarity is held to 0 during MCSPI transfer. More...

Chip-select Idle Time
Values used to configure the chip select time control (TCS)
#define	MCSPI_TCS0_0_CLK (CSL_MCSPI_CH0CONF_TCS0_ZEROCYCLEDLY)
	0.5 clock cycles delay More...

#define	MCSPI_TCS0_1_CLK (CSL_MCSPI_CH0CONF_TCS0_ONECYCLEDLY)
	1.5 clock cycles delay More...

#define	MCSPI_TCS0_2_CLK (CSL_MCSPI_CH0CONF_TCS0_TWOCYCLEDLY)
	2.5 clock cycles delay More...

#define	MCSPI_TCS0_3_CLK (CSL_MCSPI_CH0CONF_TCS0_THREECYCLEDLY)
	3.5 clock cycles delay More...

Channel Mode

#define	MCSPI_CH_MODE_SINGLE (CSL_MCSPI_MODULCTRL_SINGLE_SINGLE)
	Only one channel will be used in controller mode. This should be used when CS is used in forced enable mode. More...

#define	MCSPI_CH_MODE_MULTI (CSL_MCSPI_MODULCTRL_SINGLE_MULTI)
	More than one channel will be used in controller mode. More...

Pin Mode

#define	MCSPI_PINMODE_3PIN (CSL_MCSPI_MODULCTRL_PIN34_3PINMODE)
	SPIEN (CS) is not used. In this mode all related options to chip-select have no meaning. More...

#define	MCSPI_PINMODE_4PIN (CSL_MCSPI_MODULCTRL_PIN34_4PINMODE)

Init Delay
Values used to enable initial delay for first transfer
#define	MCSPI_INITDLY_0 (CSL_MCSPI_MODULCTRL_INITDLY_NODELAY)
	No delay. More...

#define	MCSPI_INITDLY_4 (CSL_MCSPI_MODULCTRL_INITDLY_4CLKDLY)
	4 SPI bus clock delays More...

#define	MCSPI_INITDLY_8 (CSL_MCSPI_MODULCTRL_INITDLY_8CLKDLY)
	8 SPI bus clock delays More...

#define	MCSPI_INITDLY_16 (CSL_MCSPI_MODULCTRL_INITDLY_16CLKDLY)
	16 SPI bus clock delays More...

#define	MCSPI_INITDLY_32 (CSL_MCSPI_MODULCTRL_INITDLY_32CLKDLY)
	32 SPI bus clock delays More...

Typedefs
typedef void *	MCSPI_DmaHandle

typedef void *	MCSPI_DmaChConfig

typedef uint32_t(*	MCSPI_clockGet) (void)

typedef void(*	MCSPI_transferCallbackFxn) (void *args, uint32_t tansferStatus)
	The definition of a transfer completion callback function used by the SPI driver when used in MCSPI_TRANSFER_MODE_CALLBACK. More...

typedef void(*	MCSPI_errorCallbackFxn) (void *args)
	The definition of a error callback function used by the SPI driver when used in MCSPI_TRANSFER_MODE_CALLBACK. More...

typedef struct MCSPILLD_InitObject *	MCSPILLD_InitHandle

typedef struct MCSPILLD_Object *	MCSPILLD_Handle

Functions
void	MCSPI_reset (uint32_t baseAddr)

void	MCSPI_clearAllIrqStatus (uint32_t baseAddr)

void	MCSPI_stop (MCSPILLD_Handle hMcspi, MCSPI_ChObject *chObj, uint32_t chNum)

void	MCSPI_setChDataSize (uint32_t baseAddr, MCSPI_ChObject *chObj, uint32_t dataSize, uint32_t csDisable)

static void	MCSPI_intrStatusClear (const MCSPI_ChObject *chObj, uint32_t baseAddr, uint32_t intFlags)

int32_t	MCSPI_lld_init (MCSPILLD_Handle hMcspi)
	This API Initializes the McSPI instance. More...

int32_t	MCSPI_lld_initDma (MCSPILLD_Handle hMcspi)
	This API Initializes the McSPI instance in DMA Mode. More...

int32_t	MCSPI_lld_deInit (MCSPILLD_Handle hMcspi)
	This API De-Initializes the McSPI instance. More...

int32_t	MCSPI_lld_deInitDma (MCSPILLD_Handle hMcspi)
	This API De-Initializes the McSPI instance in DMA mode. More...

int32_t	MCSPI_lld_write (MCSPILLD_Handle hMcspi, void txBuf, uint32_t count, uint32_t timeout, const MCSPI_ExtendedParams extendedParams)
	This API writes data to the McSPI instance in Polling mode. More...

int32_t	MCSPI_lld_writeIntr (MCSPILLD_Handle hMcspi, void txBuf, uint32_t count, uint32_t timeout, const MCSPI_ExtendedParams extendedParams)
	This API writes data to the McSPI instance in Interrupt mode. More...

int32_t	MCSPI_lld_writeDma (MCSPILLD_Handle hMcspi, void txBuf, uint32_t count, uint32_t timeout, const MCSPI_ExtendedParams extendedParams)
	This API writes data to the McSPI instance in DMA mode. More...

int32_t	MCSPI_lld_read (MCSPILLD_Handle hMcspi, void rxBuf, uint32_t count, uint32_t timeout, const MCSPI_ExtendedParams extendedParams)
	This API reads data from the McSPI instance in Polling mode. More...

int32_t	MCSPI_lld_readIntr (MCSPILLD_Handle hMcspi, void rxBuf, uint32_t count, uint32_t timeout, const MCSPI_ExtendedParams extendedParams)
	This API reads data from the McSPI instance in Interrupt mode. More...

int32_t	MCSPI_lld_readDma (MCSPILLD_Handle hMcspi, void rxBuf, uint32_t count, uint32_t timeout, const MCSPI_ExtendedParams extendedParams)
	This API reads data from the McSPI instance in DMA mode. More...

int32_t	MCSPI_lld_readWrite (MCSPILLD_Handle hMcspi, void txBuf, void rxBuf, uint32_t count, uint32_t timeout, const MCSPI_ExtendedParams *extendedParams)
	This API reads writes data from the McSPI instance in polling mode. More...

int32_t	MCSPI_lld_readWriteIntr (MCSPILLD_Handle hMcspi, void txBuf, void rxBuf, uint32_t count, uint32_t timeout, const MCSPI_ExtendedParams *extendedParams)
	This API reads writes data from the McSPI instance in Interrupt mode. More...

int32_t	MCSPI_lld_readWriteDma (MCSPILLD_Handle hMcspi, void txBuf, void rxBuf, uint32_t count, uint32_t timeout, const MCSPI_ExtendedParams *extendedParams)
	This API reads writes data from the McSPI instance in DMA mode. More...

int32_t	MCSPI_lld_readWriteCancel (MCSPILLD_Handle hMcspi)
	This API cancels current McSPI transfer. More...

int32_t	MCSPI_lld_readWriteDmaCancel (MCSPILLD_Handle hMcspi)
	This API cancels current McSPI transfer in DMA mode. More...

int32_t	MCSPI_lld_transfer (MCSPILLD_Handle hMcspi, MCSPI_Transaction *transaction)
	This API transfers data from the McSPI instance in Polling mode. More...

int32_t	MCSPI_lld_transferIntr (MCSPILLD_Handle hMcspi, MCSPI_Transaction *transaction)
	This API reads data from the McSPI instance in Interrupt mode. More...

int32_t	MCSPI_lld_transferDma (MCSPILLD_Handle hMcspi, MCSPI_Transaction *transaction)
	This API reads data from the McSPI instance in DMA mode. More...

void	MCSPI_lld_controllerIsr (void *args)
	This is the McSPI Controller ISR and can be used as IRQ handler in Controller mode. More...

void	MCSPI_lld_peripheralIsr (void *args)
	This is the McSPI Peripheral ISR and can be used as IRQ handler in Peripheral mode. More...

int32_t	MCSPI_lld_getState (MCSPILLD_Handle hMcspi)
	This API returns the driver state. More...

int32_t	MCSPI_lld_transferCancel (MCSPILLD_Handle hMcspi)
	This API cancels current McSPI transfer. More...

int32_t	MCSPI_lld_transferDmaCancel (MCSPILLD_Handle hMcspi)
	This API cancels current McSPI transfer in DMA mode. More...

static void	MCSPI_lld_ChConfig_init (MCSPI_ChConfig *chConfig)
	Function to initialize the MCSPI_ChConfig struct to its defaults. More...

static void	MCSPI_lld_Transaction_init (MCSPI_Transaction *trans)
	Function to initialize the MCSPI_Transaction struct to its defaults. More...

uint32_t	MCSPI_lld_getBaseAddr (MCSPILLD_Handle handle)
	Function to get base address of MCSPI instance of a particular handle. More...

int32_t	MCSPI_lld_reConfigFifo (MCSPILLD_Handle handle, uint32_t chNum, uint32_t numWordsRxTx)
	Function to re-configure Effective FIFO Words. More...

static uint8_t	MCSPI_getBufWidthShift (uint32_t dataSize)
	This API will return the buffer width in bytes based on dataSize. More...

static uint32_t	MCSPI_readChStatusReg (uint32_t baseAddr, uint32_t chNum)
	This API will return the status of the McSPI channel currently in use. More...

static uint32_t	MCSPI_readChCtrlReg (uint32_t baseAddr, uint32_t chNum)
	This API returns Channel control register value. More...

static void	MCSPI_writeChCtrlReg (uint32_t baseAddr, uint32_t chNum, uint32_t regVal)
	This API sets Channel control register value. More...

static uint32_t	MCSPI_readChConf (uint32_t baseAddr, uint32_t chNum)
	This API returns Channel Config register value. More...

static void	MCSPI_writeChConfReg (uint32_t baseAddr, uint32_t chNum, uint32_t regVal)
	This API sets Channel Config register value. More...

static void	MCSPI_writeTxDataReg (uint32_t baseAddr, uint32_t txData, uint32_t chNum)
	This API will put the data on to the McSPI Channel transmit register. More...

static void	MCSPI_enableTxFIFO (uint32_t baseAddr, uint32_t chNum, uint32_t enableFlag)
	This API will enable/disable the Tx FIFOs of McSPI peripheral. More...

static void	MCSPI_enableRxFIFO (uint32_t baseAddr, uint32_t chNum, uint32_t enableFlag)
	This API will enable/disable the Rx FIFOs of McSPI peripheral. More...

static uint32_t	MCSPI_readRxDataReg (uint32_t baseAddr, uint32_t chNum)
	This API will return the data present in the MCSPI_RX register. More...

static void	MCSPI_setDataWidth (uint32_t baseAddr, uint32_t chNum, uint32_t dataWidth)
	This API will set the data width in the channel config register. More...

Introduction

Data Structures

Macros

Typedefs

Functions