pico_spi.c File Reference

Implementation of pico spi driver. More...

#include "no_os_error.h"
#include "no_os_util.h"
#include "no_os_spi.h"
#include "no_os_alloc.h"
#include "pico_spi.h"
#include "pico/stdlib.h"
#include "no_os_delay.h"
#include "hardware/resets.h"

Include dependency graph for pico_spi.c:

Macros
#define	PICO_SPI_MAX_INSTANCES   2U

Functions
int32_t	pico_spi_init (struct no_os_spi_desc **desc, const struct no_os_spi_init_param *param)
	Initialize the SPI communication peripheral.
int32_t	pico_spi_remove (struct no_os_spi_desc *desc)
	Free the resources allocated by no_os_spi_init().
int32_t	pico_spi_transfer (struct no_os_spi_desc *desc, struct no_os_spi_msg *msgs, uint32_t len)
	Write/read multiple messages to/from SPI.
int32_t	pico_spi_write_and_read (struct no_os_spi_desc *desc, uint8_t *data, uint16_t bytes_number)
	Write and read data to/from SPI.

Variables
const struct no_os_spi_platform_ops	pico_spi_ops
	pico platform specific SPI platform ops structure

Detailed Description

Implementation of pico spi driver.

Author

RBolboac (ramon.nosp@m.a.bo.nosp@m.lboac.nosp@m.a@an.nosp@m.alog..nosp@m.com)

Copyright 2022(c) Analog Devices, Inc.

SPDX-License-Identifier: BSD-3-Clause

Macro Definition Documentation

PICO_SPI_MAX_INSTANCES

#define PICO_SPI_MAX_INSTANCES   2U

Function Documentation

pico_spi_init()

int32_t pico_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, error code otherwise.

pico_spi_remove()

int32_t pico_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, error code otherwise.

pico_spi_transfer()

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

Write/read multiple messages to/from SPI.

Parameters

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

Returns

0 in case of success, errno codes otherwise.

pico_spi_write_and_read()

int32_t pico_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, error code otherwise.

Variable Documentation

pico_spi_ops

const struct no_os_spi_platform_ops pico_spi_ops

Initial value:

= {
    .init = &pico_spi_init,
    .write_and_read = &pico_spi_write_and_read,
    .transfer = &pico_spi_transfer,
    .remove = &pico_spi_remove
}

pico platform specific SPI platform ops structure

pico specific SPI platform ops structure