ad719x_iio.c File Reference

Implementation of AD719X IIO application interfaces. More...

#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <math.h>
#include <errno.h>
#include "ad719x_iio.h"
#include "ad719x.h"
#include "ad719x_user_config.h"
#include "ad719x_support.h"
#include "app_config.h"
#include "no_os_error.h"
#include "no_os_util.h"
#include "no_os_print_log.h"
#include "iio_trigger.h"
#include "common.h"

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Macros
#define	AD719X_CHN_ATTR(_name, _priv)
#define	AD719X_CHN_AVAIL_ATTR(_name, _priv)
#define	AD719X_IIO_CH(_idx, chn_no)
#define	DATA_BUFFER_SIZE   (32768)
#define	NUM_OF_IIO_DEVICES   1
#define	ad719x_IIO_TRIGGER_NAME   "ad719x_iio_trigger"
#define	BYTES_PER_SAMPLE   (STORAGE_BITS/8)
#define	AD719X_DEFAULT_SCALE(x)   ((AD719X_DEFAULT_REF_VOLTAGE / (ADC_MAX_COUNT_UNIPOLAR * x)) * 1000)
#define	AD7194_CH(chn)   chn
#define	BUF_READ_TIMEOUT   0xffffffff

Enumerations
enum	ad719x_attribute_ids {   ADC_RANGE ,   ADC_BRIDGE_SWITCH ,   ADC_OPERATING_MODE ,   ADC_SAMPLING_FREQUENCY ,   ADC_RAW ,   ADC_SCALE ,   ADC_OFFSET }

Functions
void	burst_capture_callback (void *context)
	Interrupt Service Routine to monitor data ready event. More...
int32_t	ad719x_iio_initialize (void)
	Initialize the ad719x IIO Interface. More...
void	ad719x_iio_event_handler (void)
	Run the ad719x IIO event handler. More...

Variables
struct ad719x_dev *	p_ad719x_dev_inst = NULL
struct iio_device *	p_iio_ad719x_dev
struct scan_type	ad719x_iio_scan_type

Detailed Description

Implementation of AD719X IIO application interfaces.

Copyright (c) 2021-24 Analog Devices, Inc. All rights reserved.

This software is proprietary to Analog Devices, Inc. and its licensors. By using this software you agree to the terms of the associated Analog Devices Software License Agreement.

Macro Definition Documentation

AD7194_CH

#define AD7194_CH

(

chn

)

chn

AD719X_CHN_ATTR

#define AD719X_CHN_ATTR	(		_name,
			_priv
	)

Value:

        {\
        .name = _name,\
        .priv = _priv,\
        .show = iio_ad719x_attr_get,\
        .store = iio_ad719x_attr_set\
}

AD719X_CHN_AVAIL_ATTR

#define AD719X_CHN_AVAIL_ATTR	(		_name,
			_priv
	)

Value:

    {\
    .name = _name,\
    .priv = _priv,\
    .show = iio_ad719x_attr_available_get,\
    .store = iio_ad719x_attr_available_set\
}

AD719X_DEFAULT_SCALE

#define AD719X_DEFAULT_SCALE

(

x

)

((AD719X_DEFAULT_REF_VOLTAGE / (ADC_MAX_COUNT_UNIPOLAR * x)) * 1000)

AD719X_IIO_CH

#define AD719X_IIO_CH	(		_idx,
			chn_no
	)

Value:

    {\
    .name = _idx, \
    .ch_type = IIO_VOLTAGE,\
    .ch_out = false,\
    .indexed = true,\
    .channel = chn_no,\
    .scan_index = chn_no,\
    .scan_type = &ad719x_iio_scan_type,\
    .attributes = iio_ad719x_ch_attributes\
}

ad719x_IIO_TRIGGER_NAME

#define ad719x_IIO_TRIGGER_NAME   "ad719x_iio_trigger"

BUF_READ_TIMEOUT

#define BUF_READ_TIMEOUT   0xffffffff

BYTES_PER_SAMPLE

#define BYTES_PER_SAMPLE   (STORAGE_BITS/8)

DATA_BUFFER_SIZE

#define DATA_BUFFER_SIZE   (32768)

NUM_OF_IIO_DEVICES

#define NUM_OF_IIO_DEVICES   1

Enumeration Type Documentation

ad719x_attribute_ids

enum ad719x_attribute_ids

Enumerator
ADC_RANGE
ADC_BRIDGE_SWITCH
ADC_OPERATING_MODE
ADC_SAMPLING_FREQUENCY
ADC_RAW
ADC_SCALE
ADC_OFFSET

Function Documentation

ad719x_iio_event_handler()

void ad719x_iio_event_handler

(

void

)

Run the ad719x IIO event handler.

Returns

None

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ad719x_iio_initialize()

int32_t ad719x_iio_initialize

(

void

)

Initialize the ad719x IIO Interface.

Returns

0 in case of success, negative value otherwise

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burst_capture_callback()

void burst_capture_callback

(

void *

context

)

Interrupt Service Routine to monitor data ready event.

Interrupt Service Routine to monitor end of conversion event.

Parameters

context[in]

- Callback context (unused)

Returns

none

Variable Documentation

ad719x_iio_scan_type

struct scan_type ad719x_iio_scan_type

Initial value:

= {
    .sign = 'u',
    .realbits = REAL_BITS,
    .storagebits = STORAGE_BITS,
    .shift = false,
    .is_big_endian = false
}

p_ad719x_dev_inst

struct ad719x_dev* p_ad719x_dev_inst = NULL

p_iio_ad719x_dev

struct iio_device* p_iio_ad719x_dev