Functions
static hal_spi_handle *	hal_spi_get_handle (KSPINum spi)
	Fetches SPI bus data structure. More...

static hal_spi_handle *	hal_spi_device_init (KSPI *spi)
	Initializes SPI bus structure with data needed to setup hardware. More...

static KSPIStatus	hal_spi_hw_init (hal_spi_handle *handle)
	Initializes the SPI according to the specified parameters in the configuration and creates the associated handle. More...

static void	hal_spi_terminate (hal_spi_handle *handle)
	SPI hardware cleanup and disabling. More...

static void	hal_spi_gpio_init (hal_spi_handle *handle)
	Initializes the SPI bus pins. More...

KSPIStatus	kprv_spi_dev_init (KSPINum spi_num)
	Setup and enable SPI bus. More...

KSPIStatus	kprv_spi_dev_terminate (KSPINum spi)
	SPI hardware cleanup and disabling. More...

KSPIStatus	kprv_spi_write (KSPINum spi, uint8_t *buffer, uint32_t len)
	Write data over SPI bus. More...

KSPIStatus	kprv_spi_read (KSPINum spi, uint8_t *buffer, uint32_t len)
	Read data over SPI bus. More...

KSPIStatus	kprv_spi_write_read (KSPINum spi, uint8_t txBuffer, uint8_t rxBuffer, uint32_t len)
	Write and read data over SPI bus. More...

Variables
static hal_spi_handle	hal_spi_dev [K_NUM_SPI]
	Static array of spi bus handles. More...

static uint32_t	spi_timeout = 1000
	Default spi request timeout value. More...

Function Documentation

static hal_spi_handle * hal_spi_device_init ( KSPI * spi )

static

Initializes SPI bus structure with data needed to setup hardware.

Parameters

spi	higher level hal SPI data

Returns: hal_spi_handle* NULL if bad bus num, otherwise data ready for dev setup

static hal_spi_handle * hal_spi_get_handle ( KSPINum spi )

static

Fetches SPI bus data structure.

Parameters

num	SPI bus num to fetch

Returns: hal_spi_handle* pointer to data structure

static void hal_spi_gpio_init ( hal_spi_handle * handle )

static

Initializes the SPI bus pins.

Parameters

handle pointer to hal_spi_handle containing config information

static KSPIStatus hal_spi_hw_init ( hal_spi_handle * handle )

static

Initializes the SPI according to the specified parameters in the configuration and creates the associated handle.

Parameters

handle pointer to hal_spi_handle containing config information

Returns: KSPIStatus SPI_OK if success, otherwise a specific error flag

static void hal_spi_terminate ( hal_spi_handle * handle )

static

SPI hardware cleanup and disabling.

Parameters

handle pointer to hal_spi_handle containing config information

KSPIStatus kprv_spi_dev_init ( KSPINum spi_num )

Setup and enable SPI bus.

Parameters

spi	SPI bus to initialize

Returns: KSPIStatus SPI_OK if success, otherwise a specific error flag

KSPIStatus kprv_spi_dev_terminate ( KSPINum spi )

SPI hardware cleanup and disabling.

Parameters

spi	bus num to terminate

Returns: KSPIStatus SPI_OK if success, otherwise a specific error flag

KSPIStatus kprv_spi_read	(	KSPINum	spi,
		uint8_t *	buffer,
		uint32_t	len
	)

Read data over SPI bus.

Parameters

spi	SPI bus to read from
buffer	pointer to data buffer
len	length of data to read

Returns: KSPIStatus SPI_OK on success, otherwise failure

KSPIStatus kprv_spi_write	(	KSPINum	spi,
		uint8_t *	buffer,
		uint32_t	len
	)

Write data over SPI bus.

Parameters

spi	SPI bus to write to
buffer	pointer to data buffer
len	length of data to write

Returns: KSPIStatus SPI_OK on success, otherwise failure

KSPIStatus kprv_spi_write_read	(	KSPINum	spi,
		uint8_t *	txBuffer,
		uint8_t *	rxBuffer,
		uint32_t	len
	)

Write and read data over SPI bus.

Parameters

spi	SPI bus to write to
txBuffer	pointer to data buffer to write from
rxBuffer	pointer to data buffer to read into
len	length of data to write and read

Returns: KSPIStatus SPI_OK on success, otherwise failure

Variable Documentation

hal_spi_handle hal_spi_dev[K_NUM_SPI]

static

Static array of spi bus handles.

uint32_t spi_timeout = 1000

static

Default spi request timeout value.

Functions

Variables

Function Documentation

Variable Documentation