ad552xr_iio.c File Reference

Implementation of AD552XR IIO Application Interface. More...

#include <string.h>
#include <stdint.h>
#include <stdio.h>
#include "common.h"
#include "app_config.h"
#include "ad552xr.h"
#include "ad552xr_user_config.h"
#include "ad552xr_regs.h"
#include "ad552xr_support.h"
#include "no_os_error.h"
#include "no_os_delay.h"
#include "no_os_alloc.h"
#include "no_os_util.h"
#include "no_os_pwm.h"
#include "iio_trigger.h"
#include "version.h"

Include dependency graph for ad552xr_iio.c:

Macros
#define	BYTES_PER_SAMPLE   (AD552XR_DAC_RESOLUTION / 8)
#define	CHN_STORAGE_BITS   (BYTES_PER_SAMPLE * 8)
#define	AD552XR_CHN_ATTR(_name, _priv)
#define	AD552XR_CHN_AVAIL_ATTR(_name, _priv)
#define	AD552XR_DAC_CH(_name, _dev, _idx)
#define	AD552XR_DEFAULT_CHN_SCAN
#define	AD552XR_NUM_BYTES_TRANSFER   (sizeof(uint16_t) + BYTES_PER_SAMPLE)
#define	DATA_BUFFER_SIZE   32768
#define	BUF_READ_TIMEOUT   0xffffffff
#define	AD552XR_MAX_SPI_FREQUENCY   45E6
#define	AD552XR_IIO_TRIGGER_NAME   "ad552xr_iio_trigger"

Enumerations
enum	ad552xr_attribute_ids {   DEV_ADDR_ATTR_ID ,   SAMPLE_RATE_ATTR_ID ,   SCK_FREQ_ATTR_ID ,   REF_SEL_ATTR_ID ,   STATUS_ATTR_ID ,   SINGLE_INSTR_ATTR_ID ,   RAW_ATTR_ID ,   SCALE_ATTR_ID ,   OFFSET_ATTR_ID ,   INPUT_A_ATTR_ID ,   INPUT_B_ATTR_ID ,   OUTPUT_STATE_ATTR_ID ,   RANGE_SEL_ATTR_ID ,   HW_SW_SEL_ATTR_ID ,   FUNC_SEL_ATTR_ID ,   LDAC_HW_PIN_SEL_ATTR_ID ,   LDAC_HW_ACTIVE_EDGE_ATTR_ID ,   DITHER_PERIOD_FACTOR_ATTR_ID ,   DITHER_PHASE_ATTR_ID ,   RAMP_STEP_ATTR_ID ,   NUM_OF_DEV_ATTR = 6 ,   NUM_OF_DEV_AVAIL_ATTR = 2 ,   NUM_OF_CH_ATTR = 14 ,   NUM_OF_CH_AVAIL_ATTR = 8 }

Functions
uint32_t	debug_reg_search (uint32_t addr)
	Search for the base address for multi byte register.
void	iio_app_remove (void)
	Remove the IIO resources for AD552XR IIO application.
int32_t	iio_app_initialize (void)
	Initialize the IIO interface for AD552XR IIO device.
void	iio_app_event_handler (void)
	Run the AD552XR IIO event handler.

Variables
struct scan_type	iio_ad552xr_scan_type [AD552XR_IIO_NUM_DEVICES][AD552XR_MAX_NUM_CH]

Detailed Description

Implementation of AD552XR IIO Application Interface.

This module acts as an interface for AD552XR IIO device

Copyright (c) 2026 Analog Devices, Inc.

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

AD552XR_CHN_ATTR

#define AD552XR_CHN_ATTR	(		_name,
			_priv
	)

Value:

    {\
    .name = _name,\
    .priv = _priv,\
    .show = iio_ad552xr_attr_get,\
    .store = iio_ad552xr_attr_set\
}

AD552XR_CHN_AVAIL_ATTR

#define AD552XR_CHN_AVAIL_ATTR	(		_name,
			_priv
	)

Value:

    {\
    .name = _name,\
    .priv = _priv,\
    .show = iio_ad552xr_attr_available_get,\
    .store = iio_ad552xr_attr_available_set\
}

AD552XR_DAC_CH

#define AD552XR_DAC_CH	(		_name,
			_dev,
			_idx
	)

Value:

    {\
    .name = strdup(_name),\
    .ch_type = IIO_VOLTAGE,\
    .channel = _idx,\
    .ch_out = true,\
    .scan_index = _idx,\
    .indexed = true,\
    .scan_type = &iio_ad552xr_scan_type[_dev][_idx],\
    .attributes = iio_ad552xr_channel_attributes[_dev],\
}

AD552XR_DEFAULT_CHN_SCAN

#define AD552XR_DEFAULT_CHN_SCAN

Value:

    {\
    .sign = 'u',\
    .realbits = AD552XR_DAC_RESOLUTION,\
    .storagebits = CHN_STORAGE_BITS,\
    .shift = 0,\
    .is_big_endian = false\
}

AD552XR_IIO_TRIGGER_NAME

#define AD552XR_IIO_TRIGGER_NAME   "ad552xr_iio_trigger"

AD552XR_MAX_SPI_FREQUENCY

#define AD552XR_MAX_SPI_FREQUENCY   45E6

AD552XR_NUM_BYTES_TRANSFER

#define AD552XR_NUM_BYTES_TRANSFER   (sizeof(uint16_t) + BYTES_PER_SAMPLE)

BUF_READ_TIMEOUT

#define BUF_READ_TIMEOUT   0xffffffff

BYTES_PER_SAMPLE

#define BYTES_PER_SAMPLE   (AD552XR_DAC_RESOLUTION / 8)

CHN_STORAGE_BITS

#define CHN_STORAGE_BITS   (BYTES_PER_SAMPLE * 8)

DATA_BUFFER_SIZE

#define DATA_BUFFER_SIZE   32768

Enumeration Type Documentation

ad552xr_attribute_ids

enum ad552xr_attribute_ids

Enumerator
DEV_ADDR_ATTR_ID
SAMPLE_RATE_ATTR_ID
SCK_FREQ_ATTR_ID
REF_SEL_ATTR_ID
STATUS_ATTR_ID
SINGLE_INSTR_ATTR_ID
RAW_ATTR_ID
SCALE_ATTR_ID
OFFSET_ATTR_ID
INPUT_A_ATTR_ID
INPUT_B_ATTR_ID
OUTPUT_STATE_ATTR_ID
RANGE_SEL_ATTR_ID
HW_SW_SEL_ATTR_ID
FUNC_SEL_ATTR_ID
LDAC_HW_PIN_SEL_ATTR_ID
LDAC_HW_ACTIVE_EDGE_ATTR_ID
DITHER_PERIOD_FACTOR_ATTR_ID
DITHER_PHASE_ATTR_ID
RAMP_STEP_ATTR_ID
NUM_OF_DEV_ATTR
NUM_OF_DEV_AVAIL_ATTR
NUM_OF_CH_ATTR
NUM_OF_CH_AVAIL_ATTR

Function Documentation

debug_reg_search()

uint32_t debug_reg_search

(

uint32_t

addr

)

Search for the base address for multi byte register.

Parameters

addr[in]

- Address as requested by the IIO client

Returns

Register address

iio_app_event_handler()

void iio_app_event_handler

(

void

)

Run the AD552XR IIO event handler.

Run the AD3530R IIO event handler.

Returns

none

This function monitors the new IIO client event

iio_app_initialize()

int32_t iio_app_initialize

(

void

)

Initialize the IIO interface for AD552XR IIO device.

Initialize the IIO interface for AD3530R IIO device.

Returns

0 in case of success,negative error code otherwise

iio_app_remove()

void iio_app_remove

(

void

)

Remove the IIO resources for AD552XR IIO application.

Returns

none

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Variable Documentation

iio_ad552xr_scan_type

struct scan_type iio_ad552xr_scan_type[AD552XR_IIO_NUM_DEVICES][AD552XR_MAX_NUM_CH]

Initial value:

= {
    [0 ... AD552XR_IIO_NUM_DEVICES - 1] = {
        [0 ... AD552XR_MAX_NUM_CH - 1] = AD552XR_DEFAULT_CHN_SCAN
    }
}