ad7799.c File Reference

Implementation of AD7798/AD7799 Driver. More...

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "no_os_error.h"
#include "ad7799.h"
#include "no_os_alloc.h"

Include dependency graph for ad7799.c:

Functions
int32_t	ad7799_read (struct ad7799_dev *device, uint8_t reg_addr, uint32_t *reg_data)
	Read device register.
int32_t	ad7799_write (struct ad7799_dev *device, uint8_t reg_addr, uint32_t reg_data)
	Write device register.
int32_t	ad7799_reset (struct ad7799_dev *device)
	Software reset of the device.
int32_t	ad7799_set_mode (struct ad7799_dev *device, uint8_t mode)
	Set the device mode.
int32_t	ad7799_set_channel (struct ad7799_dev *device, uint8_t ch)
	Select the ADC channel.
int32_t	ad7799_get_channel (struct ad7799_dev *device, uint8_t ch, uint32_t *reg_data)
	Read specific ADC channel.
int32_t	ad7799_read_channel (struct ad7799_dev *device, uint8_t ch, int32_t *data_scaled)
	Read data from specific ADC channel with specified precision.
int32_t	ad7799_set_gain (struct ad7799_dev *device, uint8_t gain)
	Set the ADC gain.
int32_t	ad7799_get_gain (struct ad7799_dev *device, uint8_t *gain)
	Get the ADC gain.
int32_t	ad7799_set_refdet (struct ad7799_dev *device, uint8_t ref_en)
	Enable or disable the reference detect function.
int32_t	ad7799_set_polarity (struct ad7799_dev *device, uint8_t polarity)
	Set ADC polarity.
int32_t	ad7799_dev_ready (struct ad7799_dev *device)
	Read the /RDY bit of status register and check the status of the device.
int32_t	ad7799_init (struct ad7799_dev **device, const struct ad7799_init_param *init_param)
	Initialize the device.
int32_t	ad7799_remove (struct ad7799_dev *device)
	Remove the device and release resources.

Detailed Description

Implementation of AD7798/AD7799 Driver.

Author

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

Copyright 2020(c) Analog Devices, Inc.

SPDX-License-Identifier: BSD-3-Clause

Function Documentation

ad7799_dev_ready()

int32_t ad7799_dev_ready

(

struct ad7799_dev *

device

)

Read the /RDY bit of status register and check the status of the device.

Parameters

device

- The device structure.

Returns

0 in case of success, negative error code otherwise.

ad7799_get_channel()

int32_t ad7799_get_channel	(	struct ad7799_dev *	device,
		uint8_t	ch,
		uint32_t *	reg_data )

Read specific ADC channel.

Parameters

device	- The device structure.
ch	- The ADC channel.
reg_data	- The content of the data register.

Returns

0 in case of success, negative error code otherwise.

ad7799_get_gain()

int32_t ad7799_get_gain	(	struct ad7799_dev *	device,
		uint8_t *	gain )

Get the ADC gain.

Parameters

device	- The device structure.
gain	- the gain value from the register.

Returns

0 in case of success, negative error code otherwise.

ad7799_init()

int32_t ad7799_init	(	struct ad7799_dev **	device,
		const struct ad7799_init_param *	init_param )

Initialize the device.

Parameters

device	- The device structure.
init_param	- The structure that contains the device initial parameters.

Returns

0 in case of success, negative error code otherwise.

ad7799_read()

int32_t ad7799_read	(	struct ad7799_dev *	device,
		uint8_t	reg_addr,
		uint32_t *	reg_data )

Read device register.

Parameters

device	- The device structure.
reg_addr	- The register address.
reg_data	- The data read from the register.

Returns

0 in case of success, negative error code otherwise.

ad7799_read_channel()

int32_t ad7799_read_channel	(	struct ad7799_dev *	device,
		uint8_t	ch,
		int32_t *	data_scaled )

Read data from specific ADC channel with specified precision.

Parameters

device	- The device structure.
ch	- The ADC channel.
data_scaled	- The content of the data in mV/uV.

Returns

0 in case of success, negative error code otherwise.

ad7799_remove()

int32_t ad7799_remove

(

struct ad7799_dev *

device

)

Remove the device and release resources.

Parameters

device

- The device structure.

Returns

0 in case of success, negative error code otherwise.

ad7799_reset()

int32_t ad7799_reset

(

struct ad7799_dev *

device

)

Software reset of the device.

Parameters

device

- The device structure.

Returns

0 in case of success, negative error code otherwise.

ad7799_set_channel()

int32_t ad7799_set_channel	(	struct ad7799_dev *	device,
		uint8_t	ch )

Select the ADC channel.

Parameters

device	- The device structure.
ch	- The channel number.

Returns

0 in case of success, negative error code otherwise.

ad7799_set_gain()

int32_t ad7799_set_gain	(	struct ad7799_dev *	device,
		uint8_t	gain )

Set the ADC gain.

Parameters

device	- The device structure.
gain	- the channel number.

Returns

0 in case of success, negative error code otherwise.

ad7799_set_mode()

int32_t ad7799_set_mode	(	struct ad7799_dev *	device,
		uint8_t	mode )

Set the device mode.

Parameters

device	- The device structure.
mode	- The device mode.

Returns

0 in case of success, negative error code otherwise.

ad7799_set_polarity()

int32_t ad7799_set_polarity	(	struct ad7799_dev *	device,
		uint8_t	polarity )

Set ADC polarity.

Parameters

device	- The device structure.
polarity	- set the device polarity: 0 - Bipolar coding 1 - Unipolar coding

Returns

0 in case of success, negative error code otherwise.

ad7799_set_refdet()

int32_t ad7799_set_refdet	(	struct ad7799_dev *	device,
		uint8_t	ref_en )

Enable or disable the reference detect function.

Parameters

device	- The device structure.
ref_en	- 1 reference detect enable. 0 reference detect disable.

Returns

0 in case of success, negative error code otherwise.

ad7799_write()

int32_t ad7799_write	(	struct ad7799_dev *	device,
		uint8_t	reg_addr,
		uint32_t	reg_data )

Write device register.

Parameters

device	- The device structure.
reg_addr	- The register address.
reg_data	- The data to be written.

Returns

0 in case of success, negative error code otherwise.