Header file of SPI Interface. More...

#include <stdint.h>

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Classes
struct	no_os_spi_msg

struct	no_os_platform_spi_delays
	Delays resulted from components in the SPI signal path. The values is ns. More...

struct	no_os_spi_init_param
	Structure holding the parameters for SPI initialization. More...

struct	no_os_spibus_desc
	SPI bus descriptor. More...

struct	no_os_spi_desc
	Structure holding SPI descriptor. More...

struct	no_os_spi_platform_ops
	Structure holding SPI function pointers that point to the platform specific function. More...

Macros
#define	NO_OS_SPI_CPHA 0x01

#define	NO_OS_SPI_CPOL 0x02

#define	SPI_MAX_BUS_NUMBER 8

Enumerations
enum	no_os_spi_mode { NO_OS_SPI_MODE_0 = (0 \| 0), NO_OS_SPI_MODE_1 = (0 \| NO_OS_SPI_CPHA), NO_OS_SPI_MODE_2 = (NO_OS_SPI_CPOL \| 0), NO_OS_SPI_MODE_3 = (NO_OS_SPI_CPOL \| NO_OS_SPI_CPHA) }
	SPI configuration for clock phase and polarity. More...

enum	no_os_spi_bit_order { NO_OS_SPI_BIT_ORDER_MSB_FIRST = 0, NO_OS_SPI_BIT_ORDER_LSB_FIRST = 1 }
	SPI configuration for bit order (MSB/LSB). More...

Functions
int32_t	no_os_spi_init (struct no_os_spi_desc *desc, const struct no_os_spi_init_param param)
	Initialize the SPI communication peripheral. More...

int32_t	no_os_spi_remove (struct no_os_spi_desc *desc)
	Free the resources allocated by no_os_spi_init(). More...

int32_t	no_os_spi_write_and_read (struct no_os_spi_desc desc, uint8_t data, uint16_t bytes_number)
	Write and read data to/from SPI. More...

int32_t	no_os_spi_transfer (struct no_os_spi_desc desc, struct no_os_spi_msg msgs, uint32_t len)
	Iterate over head list and send all spi messages. More...

int32_t	no_os_spi_transfer_dma_sync (struct no_os_spi_desc desc, struct no_os_spi_msg msgs, uint32_t len)
	Transfer a list of messages using DMA and busy wait for the completion. More...

int32_t	no_os_spi_transfer_dma_async (struct no_os_spi_desc desc, struct no_os_spi_msg msgs, uint32_t len, void(callback)(void ), void *ctx)
	Transfer a list of messages using DMA. The function will return after the first transfer is started. Once all the transfers are complete, a callback will be called. More...

int32_t	no_os_spibus_init (const struct no_os_spi_init_param *param)
	Initialize the SPI bus communication peripheral. More...

void	no_os_spibus_remove (uint32_t bus_number)
	Removes SPI bus instance. More...

Detailed Description

Header file of SPI Interface.

Author: DBogdan (drago.nosp@m.s.bo.nosp@m.gdan@.nosp@m.anal.nosp@m.og.co.nosp@m.m)

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of Analog Devices, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
The use of this software may or may not infringe the patent rights of one or more patent holders. This license does not release you from the requirement that you obtain separate licenses from these patent holders to use this software.
Use of the software either in source or binary form, must be run on or directly connected to an Analog Devices Inc. component.

THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Macro Definition Documentation

◆ NO_OS_SPI_CPHA

#define NO_OS_SPI_CPHA 0x01

◆ NO_OS_SPI_CPOL

#define NO_OS_SPI_CPOL 0x02

◆ SPI_MAX_BUS_NUMBER

#define SPI_MAX_BUS_NUMBER 8

Enumeration Type Documentation

◆ no_os_spi_bit_order

enum no_os_spi_bit_order

SPI configuration for bit order (MSB/LSB).

Enumerator
NO_OS_SPI_BIT_ORDER_MSB_FIRST	Most-significant bit (MSB) first
NO_OS_SPI_BIT_ORDER_LSB_FIRST	Least-significant bit (LSB) first

◆ no_os_spi_mode

enum no_os_spi_mode

SPI configuration for clock phase and polarity.

Enumerator
NO_OS_SPI_MODE_0	Data on rising, shift out on falling
NO_OS_SPI_MODE_1	Data on falling, shift out on rising
NO_OS_SPI_MODE_2	Data on rising, shift out on falling
NO_OS_SPI_MODE_3	Data on falling, shift out on rising

Function Documentation

◆ no_os_spi_init()

int32_t no_os_spi_init	(	struct no_os_spi_desc **	desc,
		const struct no_os_spi_init_param *	param
	)

Initialize the SPI communication peripheral.

Parameters

desc	- The SPI descriptor.
param	- The structure that contains the SPI parameters.

Returns: 0 in case of success, -1 otherwise.

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◆ no_os_spi_remove()

int32_t no_os_spi_remove ( struct no_os_spi_desc * desc )

Free the resources allocated by no_os_spi_init().

Parameters

desc	- The SPI descriptor.

Returns: 0 in case of success, -1 otherwise.

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◆ no_os_spi_transfer()

int32_t no_os_spi_transfer	(	struct no_os_spi_desc *	desc,
		struct no_os_spi_msg *	msgs,
		uint32_t	len
	)

Iterate over head list and send all spi messages.

Parameters

desc	- The SPI descriptor.
msgs	- Array of messages.
len	- Number of messages in the array.

Returns: 0 in case of success, negativ error code otherwise.

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◆ no_os_spi_transfer_dma_async()

int32_t no_os_spi_transfer_dma_async	(	struct no_os_spi_desc *	desc,
		struct no_os_spi_msg *	msgs,
		uint32_t	len,
		void()(void )	callback,
		void *	ctx
	)

Transfer a list of messages using DMA. The function will return after the first transfer is started. Once all the transfers are complete, a callback will be called.

Parameters

desc	- The SPI descriptor.
msgs	- Array of messages.
len	- Number of messages in the array.
callback	- A function which will be called after all the transfers are done.
ctx	- User specific data which should be passed to the callback function.

Returns: 0 in case of success, negativ error code otherwise.

◆ no_os_spi_transfer_dma_sync()

int32_t no_os_spi_transfer_dma_sync	(	struct no_os_spi_desc *	desc,
		struct no_os_spi_msg *	msgs,
		uint32_t	len
	)

Transfer a list of messages using DMA and busy wait for the completion.

Parameters

desc	- The SPI descriptor.
msgs	- Array of messages.
len	- Number of messages in the array.

Returns: 0 in case of success, negativ error code otherwise.

◆ no_os_spi_write_and_read()

int32_t no_os_spi_write_and_read	(	struct no_os_spi_desc *	desc,
		uint8_t *	data,
		uint16_t	bytes_number
	)

Write and read data to/from SPI.

Parameters

desc	- The SPI descriptor.
data	- The buffer with the transmitted/received data.
bytes_number	- Number of bytes to write/read.

Returns: 0 in case of success, -1 otherwise.

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◆ no_os_spibus_init()

int32_t no_os_spibus_init ( const struct no_os_spi_init_param * param )

Initialize the SPI bus communication peripheral.

Parameters

param - The structure that containes the SPI bus parameters

Returns: 0 in case of success, error code otherwise

◆ no_os_spibus_remove()

void no_os_spibus_remove ( uint32_t bus_number )

Removes SPI bus instance.

Parameters

bus_number - SPI bus number

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Classes

Macros

Enumerations

Functions

Detailed Description

Macro Definition Documentation

◆ NO_OS_SPI_CPHA

◆ NO_OS_SPI_CPOL

◆ SPI_MAX_BUS_NUMBER

Enumeration Type Documentation

◆ no_os_spi_bit_order

◆ no_os_spi_mode

Function Documentation

◆ no_os_spi_init()

◆ no_os_spi_remove()

◆ no_os_spi_transfer()

◆ no_os_spi_transfer_dma_async()

◆ no_os_spi_transfer_dma_sync()

◆ no_os_spi_write_and_read()

◆ no_os_spibus_init()

◆ no_os_spibus_remove()