no-OS
Classes | Functions | Variables
linux_i2c.c File Reference

Implementation of Linux platform I2C Driver. More...

#include "no_os_error.h"
#include "no_os_i2c.h"
#include "linux_i2c.h"
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/i2c-dev.h>
Include dependency graph for linux_i2c.c:

Classes

struct  linux_i2c_desc
 Linux platform specific I2C descriptor. More...
 

Functions

int32_t linux_i2c_init (struct no_os_i2c_desc **desc, const struct no_os_i2c_init_param *param)
 Initialize the I2C communication peripheral. More...
 
int32_t linux_i2c_remove (struct no_os_i2c_desc *desc)
 Free the resources allocated by no_os_i2c_init(). More...
 
int32_t linux_i2c_write (struct no_os_i2c_desc *desc, uint8_t *data, uint8_t bytes_number, uint8_t stop_bit)
 Write data to a slave device. More...
 
int32_t linux_i2c_read (struct no_os_i2c_desc *desc, uint8_t *data, uint8_t bytes_number, uint8_t stop_bit)
 Read data from a slave device. More...
 

Variables

const struct no_os_i2c_platform_ops linux_i2c_ops
 Linux platform specific I2C platform ops structure. More...
 

Detailed Description

Implementation of Linux platform I2C Driver.

Author
Dragos Bogdan (drago.nosp@m.s.bo.nosp@m.gdan@.nosp@m.anal.nosp@m.og.co.nosp@m.m)

Copyright 2020(c) Analog Devices, Inc.

All rights reserved.

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

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

◆ linux_i2c_init()

int32_t linux_i2c_init ( struct no_os_i2c_desc **  desc,
const struct no_os_i2c_init_param param 
)

Initialize the I2C communication peripheral.

Parameters
desc- The I2C descriptor.
param- The structure that contains the I2C parameters.
Returns
0 in case of success, -1 otherwise.

◆ linux_i2c_read()

int32_t linux_i2c_read ( struct no_os_i2c_desc desc,
uint8_t *  data,
uint8_t  bytes_number,
uint8_t  stop_bit 
)

Read data from a slave device.

Parameters
desc- The I2C descriptor.
data- Buffer that will store the received data.
bytes_number- Number of bytes to read.
stop_bit- Stop condition control. Example: 0 - A stop condition will not be generated; 1 - A stop condition will be generated.
Returns
0 in case of success, -1 otherwise.

◆ linux_i2c_remove()

int32_t linux_i2c_remove ( struct no_os_i2c_desc desc)

Free the resources allocated by no_os_i2c_init().

Parameters
desc- The I2C descriptor.
Returns
0 in case of success, -1 otherwise.

◆ linux_i2c_write()

int32_t linux_i2c_write ( struct no_os_i2c_desc desc,
uint8_t *  data,
uint8_t  bytes_number,
uint8_t  stop_bit 
)

Write data to a slave device.

Parameters
desc- The I2C descriptor.
data- Buffer that stores the transmission data.
bytes_number- Number of bytes to write.
stop_bit- Stop condition control. Example: 0 - A stop condition will not be generated; 1 - A stop condition will be generated.
Returns
0 in case of success, -1 otherwise.

Variable Documentation

◆ linux_i2c_ops

const struct no_os_i2c_platform_ops linux_i2c_ops
Initial value:
= {
.i2c_ops_init = &linux_i2c_init,
.i2c_ops_write = &linux_i2c_write,
.i2c_ops_read = &linux_i2c_read,
.i2c_ops_remove = &linux_i2c_remove
}

Linux platform specific I2C platform ops structure.

Linux specific I2C platform ops structure.

linux_i2c_write
int32_t linux_i2c_write(struct no_os_i2c_desc *desc, uint8_t *data, uint8_t bytes_number, uint8_t stop_bit)
Write data to a slave device.
Definition: linux_i2c.c:153
linux_i2c_init
int32_t linux_i2c_init(struct no_os_i2c_desc **desc, const struct no_os_i2c_init_param *param)
Initialize the I2C communication peripheral.
Definition: linux_i2c.c:78
linux_i2c_remove
int32_t linux_i2c_remove(struct no_os_i2c_desc *desc)
Free the resources allocated by no_os_i2c_init().
Definition: linux_i2c.c:124
linux_i2c_read
int32_t linux_i2c_read(struct no_os_i2c_desc *desc, uint8_t *data, uint8_t bytes_number, uint8_t stop_bit)
Read data from a slave device.
Definition: linux_i2c.c:192