ad5242.h File Reference

#include "../common/dpot.h"
#include "no_os_spi.h"
#include "no_os_i2c.h"
#include "no_os_gpio.h"
#include "no_os_util.h"

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Classes
struct	ad5242_dpot_init_param
struct	ad5242_dpot_dev

Macros
#define	AD5242_READ_ENABLE   0x01
#define	AD5242_SHUT_DOWN_ENABLE   0x20
#define	AD5242_SHUT_DOWN_DISABLE   0x00
#define	AD5242_CTL_FOR_MID_SCALE_POSITION   0x40

Functions
int	ad5242_dpot_init (struct dpot_init_param *init_params, struct dpot_dev **desc)
	Initialize the ad5242 digital potentiometer.
int	ad5242_dpot_remove (struct dpot_dev *desc)
	Free the memory allocated by ad5242_dpot_init().
int	ad5242_dpot_chn_read (struct dpot_dev *desc, enum dpot_chn_type chn, uint8_t *data)
	Read the ad5242 digital potentiometer channel.
int	ad5242_dpot_chn_write (struct dpot_dev *desc, enum dpot_chn_type chn, uint8_t data)
	Write to the digital potentiometer channel.
int	ad5242_dpot_send_cmd (struct dpot_dev *desc, struct dpot_command *cmd)
int	ad5242_dpot_shutdown (struct dpot_dev *desc, enum dpot_chn_type chn, bool shutdown_enable)
	Shutdown the AD5144 digital potentiometer channel.

Macro Definition Documentation

AD5242_CTL_FOR_MID_SCALE_POSITION

#define AD5242_CTL_FOR_MID_SCALE_POSITION   0x40

AD5242_READ_ENABLE

#define AD5242_READ_ENABLE   0x01

 @file   ad5242.h
 @brief  Header file for the ad5242 digital potentiometer drivers

Copyright 2025(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.

AD5242_SHUT_DOWN_DISABLE

#define AD5242_SHUT_DOWN_DISABLE   0x00

AD5242_SHUT_DOWN_ENABLE

#define AD5242_SHUT_DOWN_ENABLE   0x20

Function Documentation

ad5242_dpot_chn_read()

int ad5242_dpot_chn_read	(	struct dpot_dev *	desc,
		enum dpot_chn_type	chn,
		uint8_t *	data )

Read the ad5242 digital potentiometer channel.

Parameters

desc	- digipot descriptor.
chn	- digipot channel.
data	- Channel data to be read.

Returns

0 in case of success, negative error code otherwise.

ad5242_dpot_chn_write()

int ad5242_dpot_chn_write	(	struct dpot_dev *	desc,
		enum dpot_chn_type	chn,
		uint8_t	data )

Write to the digital potentiometer channel.

Parameters

desc	- digipot descriptor.
chn	- digipot channel.
data	- Channel data to be written.

Returns

0 in case of success, negative error code otherwise.

ad5242_dpot_init()

int ad5242_dpot_init	(	struct dpot_init_param *	param,
		struct dpot_dev **	desc )

Initialize the ad5242 digital potentiometer.

Parameters

param	- digipot init parameters.
desc	- digipot descriptor.

Returns

0 in case of success, negative error code otherwise.

ad5242_dpot_remove()

int ad5242_dpot_remove

(

struct dpot_dev *

desc

)

Free the memory allocated by ad5242_dpot_init().

Parameters

desc	- digipot descriptor.

Returns

0 in case of success, negative error code otherwise.

ad5242_dpot_send_cmd()

int ad5242_dpot_send_cmd	(	struct dpot_dev *	desc,
		struct dpot_command *	cmd )

ad5242_dpot_shutdown()

int ad5242_dpot_shutdown	(	struct dpot_dev *	desc,
		enum dpot_chn_type	chn,
		bool	shutdown_enable )

Shutdown the AD5144 digital potentiometer channel.

Parameters

desc	- digipot descriptor.
chn	- digipot channel.
shutdown_enable	- Shutdown enable status flag.

Returns

0 in case of success, negative error code otherwise.