API Functions

Overview

Function definitions for SPI driver.

Functions
u8	spi_read (spi_instance_t *inst)
	Read 8-bit SPI data.
u8	spi_writeRead (spi_instance_t *inst, u8 data)
	Write and Read 8-bit SPI data.
u32	spi_read32 (spi_instance_t *inst)
	Read 32-bit SPI data.
u32	spi_rspOccupancy (spi_instance_t *inst)
	Check SPI response FIFO occupancy.
u32	spi_cmdAvailability (spi_instance_t *inst)
	Check SPI command FIFO availability.
u32	spi_isBusy (spi_instance_t *inst)
	Check SPI if it has any command waiting to be executed in queue.
u32	spi_writeRead32 (spi_instance_t *inst, u32 data)
	Write and Read 32-bit SPI data.
void	spi_applyConfig (spi_instance_t *inst)
	Apply stored SPI configuration to hardware.
void	spi_waitUntilIdle (spi_instance_t *inst)
	Wait for SPI if any command waiting to be executed.
void	spi_write (spi_instance_t *inst, u8 data)
	Write 8-bit SPI data.
void	spi_write32 (spi_instance_t *inst, u32 data)
	Write 32-bit SPI data.
void	spi_select (spi_instance_t *inst, u32 cs)
	Assert SPI Chip Select.
void	spi_diselect (spi_instance_t *inst, u32 cs)
	De-assert SPI Chip Select.
void	spi_setDataMode (spi_instance_t *inst, enum cfg_mode mode)
	Set SPI data transfer mode.

Function Documentation

spi_applyConfig()

void spi_applyConfig

(

spi_instance_t *

inst

)

#include <spi.h>

Apply stored SPI configuration to hardware.

Parameters

inst	Pointer to SPI instance.

Note

Call this function after making any changes to the spi_instance_t structure to apply those changes to the hardware.

Apply stored SPI configuration to hardware.

Definition at line 93 of file spi.c.

spi_cmdAvailability()

u32 spi_cmdAvailability

(

spi_instance_t *

inst

)

#include <spi.h>

Check SPI command FIFO availability.

Parameters

inst	Pointer to SPI instance.

Returns

Number of free slots in Command FIFO.

Check SPI command FIFO availability.

Definition at line 34 of file spi.c.

spi_diselect()

void spi_diselect	(	spi_instance_t *	inst,
		u32	cs )

#include <spi.h>

De-assert SPI Chip Select.

Parameters

inst	Pointer to SPI instance.
cs	Chip select index/mask.

De-assert SPI Chip Select.

Definition at line 132 of file spi.c.

spi_isBusy()

u32 spi_isBusy

(

spi_instance_t *

inst

)

#include <spi.h>

Check SPI if it has any command waiting to be executed in queue.

Parameters

inst	Pointer to SPI instance.

Returns

Status.

Definition at line 141 of file spi.c.

spi_read()

u8 spi_read

(

spi_instance_t *

inst

)

#include <spi.h>

Read 8-bit SPI data.

Parameters

inst	Pointer to SPI instance.

Returns

8-bit data value.

Read 8-bit SPI data.

Definition at line 71 of file spi.c.

spi_read32()

u32 spi_read32

(

spi_instance_t *

inst

)

#include <spi.h>

Read 32-bit SPI data.

Parameters

inst	Pointer to SPI instance.

Returns

32-bit data value.

Read 32-bit SPI data.

Definition at line 50 of file spi.c.

spi_rspOccupancy()

u32 spi_rspOccupancy

(

spi_instance_t *

inst

)

#include <spi.h>

Check SPI response FIFO occupancy.

Parameters

inst	Pointer to SPI instance.

Returns

Number of entries in Response FIFO.

Check SPI response FIFO occupancy.

Definition at line 42 of file spi.c.

spi_select()

void spi_select	(	spi_instance_t *	inst,
		u32	cs )

#include <spi.h>

Assert SPI Chip Select.

Parameters

inst	Pointer to SPI instance.
cs	Chip select index/mask.

Assert SPI Chip Select.

Definition at line 123 of file spi.c.

spi_setDataMode()

void spi_setDataMode	(	spi_instance_t *	inst,
		enum cfg_mode	Mode )

#include <spi.h>

Set SPI data transfer mode.

Parameters

inst	Pointer to SPI instance.
mode	Data mode (Full Duplex, Half Duplex, etc.).

Set SPI data transfer mode.

Definition at line 25 of file spi.c.

spi_waitUntilIdle()

void spi_waitUntilIdle

(

spi_instance_t *

inst

)

#include <spi.h>

Wait for SPI if any command waiting to be executed.

Parameters

inst	Pointer to SPI instance.

Wait for SPI if any command waiting to be executed.

Definition at line 150 of file spi.c.

spi_write()

void spi_write	(	spi_instance_t *	inst,
		u8	data )

#include <spi.h>

Write 8-bit SPI data.

Parameters

inst	Pointer to SPI instance.
data	8-bit data to be written.

Write 8-bit SPI data.

Definition at line 105 of file spi.c.

spi_write32()

void spi_write32	(	spi_instance_t *	inst,
		u32	data )

#include <spi.h>

Write 32-bit SPI data.

Parameters

inst	Pointer to SPI instance.
data	32-bit data to be written.

Write 32-bit SPI data.

Definition at line 114 of file spi.c.

spi_writeRead()

u8 spi_writeRead	(	spi_instance_t *	inst,
		u8	data )

#include <spi.h>

Write and Read 8-bit SPI data.

Parameters

inst	Pointer to SPI instance.
data	8-bit Data to be written.

Returns

8-bit Data received.

Write and Read 8-bit SPI data.

Definition at line 82 of file spi.c.

spi_writeRead32()

u32 spi_writeRead32	(	spi_instance_t *	inst,
		u32	data )

#include <spi.h>

Write and Read 32-bit SPI data.

Parameters

inst	Pointer to SPI instance.
data	32-bit Data to be written.

Returns

32-bit Data received.

Write and Read 32-bit SPI data.

Definition at line 60 of file spi.c.