stm32_i2c.c File Reference

Implementation of stm32 i2c driver. More...

#include <stdlib.h>
#include <errno.h>
#include "no_os_util.h"
#include "no_os_alloc.h"
#include "no_os_i2c.h"
#include "stm32_i2c.h"

Include dependency graph for stm32_i2c.c:

Functions
int32_t	stm32_i2c_init (struct no_os_i2c_desc **desc, const struct no_os_i2c_init_param *param)
	Initialize the I2C communication peripheral. More...
int32_t	stm32_i2c_remove (struct no_os_i2c_desc *desc)
	Free the resources allocated by no_os_i2c_init(). More...
int32_t	stm32_i2c_write (struct no_os_i2c_desc *desc, uint8_t *data, uint8_t bytes_number, uint8_t stop_bit)
	I2C write transaction as master. More...
int32_t	stm32_i2c_read (struct no_os_i2c_desc *desc, uint8_t *data, uint8_t bytes_number, uint8_t stop_bit)
	I2C read transaction as master. More...

Variables
const struct no_os_i2c_platform_ops	stm32_i2c_ops
	stm32 platform specific I2C platform ops structure More...

Detailed Description

Implementation of stm32 i2c driver.

Author

Darius Berghe (dariu.nosp@m.s.be.nosp@m.rghe@.nosp@m.anal.nosp@m.og.co.nosp@m.m)

Copyright 2021(c) Analog Devices, Inc.

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

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. 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.
3. 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.

THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES, INC. “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 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

stm32_i2c_init()

int32_t stm32_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.

stm32_i2c_read()

int32_t stm32_i2c_read	(	struct no_os_i2c_desc *	desc,
		uint8_t *	data,
		uint8_t	bytes_number,
		uint8_t	stop_bit
	)

I2C read transaction as master.

Parameters

desc	- The I2C descriptor.
data	- The buffer where received data is to be stored.
bytes_number	- Number of bytes to receive.
stop_bit	- Specifis whether to end the transaction with a stop bit.

Returns

0 in case of success, -1 otherwise.

stm32_i2c_remove()

int32_t stm32_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.

stm32_i2c_write()

int32_t stm32_i2c_write	(	struct no_os_i2c_desc *	desc,
		uint8_t *	data,
		uint8_t	bytes_number,
		uint8_t	stop_bit
	)

I2C write transaction as master.

Parameters

desc	- The I2C descriptor.
data	- The buffer with the data to transmit.
bytes_number	- Number of bytes in the buffer.
stop_bit	- Specifis whether to end the transaction with a stop bit.

Returns

0 in case of success, -1 otherwise.

Variable Documentation

stm32_i2c_ops

const struct no_os_i2c_platform_ops stm32_i2c_ops

Initial value:

= {
    .i2c_ops_init = &stm32_i2c_init,
    .i2c_ops_write = &stm32_i2c_write,
    .i2c_ops_read = &stm32_i2c_read,
    .i2c_ops_remove = &stm32_i2c_remove
}

stm32 platform specific I2C platform ops structure

stm32 specific I2C platform ops structure