Implementation of the SPI Interface. More...

#include <inttypes.h>
#include "no_os_spi.h"
#include <stdlib.h>
#include "no_os_error.h"
#include "no_os_mutex.h"
#include "no_os_alloc.h"

Include dependency graph for no_os_spi.c:

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_spibus_init (const struct no_os_spi_init_param *param)
	Initialize the SPI bus 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...

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

Detailed Description

Implementation of the SPI Interface.

Author: Antoniu Miclaus (anton.nosp@m.iu.m.nosp@m.iclau.nosp@m.s@an.nosp@m.alog..nosp@m.com)

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.

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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Functions

Detailed Description

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()