ad5706r_iio.c File Reference

Implementation of AD5706R IIO Appication Interface. More...

#include <string.h>
#include <stdint.h>
#include <stdio.h>
#include "app_config.h"
#include "ad5706r_iio.h"
#include "ad5706r_regs.h"
#include "common.h"
#include "ad5706r_user_config.h"
#include "no_os_error.h"
#include "iio_trigger.h"
#include "iio.h"
#include "no_os_util.h"
#include "no_os_alloc.h"
#include "version.h"
#include "no_os_delay.h"

Include dependency graph for ad5706r_iio.c:

Macros
#define	AD5706_CHN_ATTR(_name, _priv)
#define	AD5706_CHN_AVAIL_ATTR(_name, _priv)
#define	AD5706_DAC_CH(_name, _dev, _idx)
#define	DATA_BUFFER_SIZE   (32768)
#define	BYTES_PER_SAMPLE   sizeof(uint16_t)
#define	CHN_STORAGE_BITS   (BYTES_PER_SAMPLE * 8)
#define	BYTE_SIZE   (uint32_t)8
#define	BYTE_MASK   (uint32_t)0xff
#define	DAC_MAX_COUNT   (NO_OS_BIT(AD5706_DAC_RESOLUTION ) - 1)
#define	AD5706R_REG_VAL   0x01
#define	AD5706R_REG_DEFAULT_VAL   0x0
#define	AD5706_DEFAULT_REF_VOLTS   (float)2.5
#define	AD5706_N_BYTES_SW_LDAC   4
#define	AD5706_SW_LDAC_N_BYTES_WITH_DATA   8
#define	AD5706_DEFAULT_CHN_SCAN

Enumerations
enum	ad5706r_attribute_ids {   DAC_DEV_ADDR_ATTR_ID ,   DAC_SAMPLE_RATE_ATTR_ID ,   DAC_HW_LDAC_TG_STATE_ATTR_ID ,   DAC_HW_LDAC_TG_PWM_ATTR_ID ,   DAC_HW_SHUTDOWN_STATE_ATTR_ID ,   DAC_ADDR_ASCENSION_ATTR_ID ,   DAC_SINGLE_INSTR_ATTR_ID ,   DAC_MUX_OUT_SEL_ATTR_ID ,   MULTI_DAC_INPUT_A_ATTR_ID ,   MULTI_DAC_SW_LDAC_ATTR_ID ,   DAC_REF_SELECT_ATTR_ID ,   DAC_REF_VOLTS_ATTR_ID ,   RESTART_IIO_ATTR_ID ,   NUM_OF_DEV_ATTR ,   DAC_CH_RAW_ATTR_ID ,   DAC_CH_SCALE_ATTR_ID ,   DAC_CH_OFFSET_ATTR_ID ,   DAC_CH_INPUT_A_ATTR_ID ,   DAC_CH_INPUT_B_ATTR_ID ,   DAC_CH_HW_ACTIVE_EDGE_ATTR_ID ,   DAC_CH_RANGE_SEL_ATTR_ID ,   DAC_CH_LDAC_TRIGGER_ATTR_ID ,   DAC_CH_TOGGLE_TRIGGER_ATTR_ID ,   DAC_CH_DITHER_TRIGGER_ATTR_ID ,   DAC_CH_OUTPUT_STATE_ATTR_ID ,   MULTI_DAC_CH_SEL_ATTR_ID ,   NUM_OF_CHN_ATTR = DAC_CH_OUTPUT_STATE_ATTR_ID - NUM_OF_DEV_ATTR }

Functions
int32_t	ad5706r_set_sampling_rate (uint32_t *sampling_rate)
	Set the sampling rate and get the updated value supported by MCU platform.
int	ad5706r_reconfig_ldac (struct ad5706r_dev *device)
	Reconfigure LDAC pin as GPIO output.
void	ad5706r_populate_func_mode_data (struct ad5706r_dev *device)
	Build the command word for Func Mode Update.
void	ad5706r_populate_ldac_mode_data (struct ad5706r_dev *device, struct iio_device_data *iio_dev_data)
	Build the comman word for a SW LDAC Update with the data to be written to the respective input register.
int32_t	ad5706r_iio_initialize (void)
	Initialize the IIO interface for AD5706R IIO device.
void	iio_params_deinit (void)
	DeInitialize the IIO parameters.
void	ad5706r_iio_event_handler (void)
	Run the AD5706R IIO event handler.

Variables
struct ad5706r_dev *	ad5706r_dev_inst [NUM_IIO_DEVICES] = { NULL, NULL }
struct iio_device *	ad5706r_iio_dev [NUM_IIO_DEVICES]
struct scan_type	iio_ad5706r_scan_type [NUM_IIO_DEVICES][AD5706R_NUM_CH]
uint32_t	ad5706r_update_rate = AD5706_MAX_UPDATE_RATE
uint8_t	n_bytes = 0
struct iio_trigger_init	iio_trigger_init_params
struct iio_init_param	iio_init_params
bool	hw_mode_enabled = false
bool	sw_mode_enabled = false

Detailed Description

Implementation of AD5706R IIO Appication Interface.

This module acts as an interface for AD5706R IIO device

Copyright (c) 2024-2026 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

AD5706_CHN_ATTR

#define AD5706_CHN_ATTR	(		_name,
			_priv
	)

Value:

        {\
        .name = _name,\
        .priv = _priv,\
        .show = iio_ad5706r_attr_get,\
        .store = iio_ad5706r_attr_set\
}

AD5706_CHN_AVAIL_ATTR

#define AD5706_CHN_AVAIL_ATTR	(		_name,
			_priv
	)

Value:

    {\
    .name = _name,\
    .priv = _priv,\
    .show = iio_ad5706r_attr_available_get,\
    .store = iio_ad5706r_attr_available_set\
}

AD5706_DAC_CH

#define AD5706_DAC_CH	(		_name,
			_dev,
			_idx
	)

Value:

    {\
    .name = _name # _idx, \
    .ch_type = IIO_CURRENT,\
    .ch_out = true,\
    .indexed = true,\
    .channel = _idx,\
    .scan_index = _idx,\
    .scan_type = &iio_ad5706r_scan_type[_dev][_idx],\
    .attributes = iio_ad5706r_dac_ch_attributes[_dev]\
}

AD5706_DEFAULT_CHN_SCAN

#define AD5706_DEFAULT_CHN_SCAN

Value:

        {\
        .sign = 'u',\
        .realbits = AD5706_DAC_RESOLUTION,\
        .storagebits = CHN_STORAGE_BITS,\
        .shift = 0,\
        .is_big_endian = false\
}

AD5706_DEFAULT_REF_VOLTS

#define AD5706_DEFAULT_REF_VOLTS   (float)2.5

AD5706_N_BYTES_SW_LDAC

#define AD5706_N_BYTES_SW_LDAC   4

AD5706_SW_LDAC_N_BYTES_WITH_DATA

#define AD5706_SW_LDAC_N_BYTES_WITH_DATA   8

AD5706R_REG_DEFAULT_VAL

#define AD5706R_REG_DEFAULT_VAL   0x0

AD5706R_REG_VAL

#define AD5706R_REG_VAL   0x01

BYTE_MASK

#define BYTE_MASK   (uint32_t)0xff

BYTE_SIZE

#define BYTE_SIZE   (uint32_t)8

BYTES_PER_SAMPLE

#define BYTES_PER_SAMPLE   sizeof(uint16_t)

CHN_STORAGE_BITS

#define CHN_STORAGE_BITS   (BYTES_PER_SAMPLE * 8)

DAC_MAX_COUNT

#define DAC_MAX_COUNT   (NO_OS_BIT(AD5706_DAC_RESOLUTION ) - 1)

DATA_BUFFER_SIZE

#define DATA_BUFFER_SIZE   (32768)

Enumeration Type Documentation

ad5706r_attribute_ids

enum ad5706r_attribute_ids

Enumerator
DAC_DEV_ADDR_ATTR_ID
DAC_SAMPLE_RATE_ATTR_ID
DAC_HW_LDAC_TG_STATE_ATTR_ID
DAC_HW_LDAC_TG_PWM_ATTR_ID
DAC_HW_SHUTDOWN_STATE_ATTR_ID
DAC_ADDR_ASCENSION_ATTR_ID
DAC_SINGLE_INSTR_ATTR_ID
DAC_MUX_OUT_SEL_ATTR_ID
MULTI_DAC_INPUT_A_ATTR_ID
MULTI_DAC_SW_LDAC_ATTR_ID
DAC_REF_SELECT_ATTR_ID
DAC_REF_VOLTS_ATTR_ID
RESTART_IIO_ATTR_ID
NUM_OF_DEV_ATTR
DAC_CH_RAW_ATTR_ID
DAC_CH_SCALE_ATTR_ID
DAC_CH_OFFSET_ATTR_ID
DAC_CH_INPUT_A_ATTR_ID
DAC_CH_INPUT_B_ATTR_ID
DAC_CH_HW_ACTIVE_EDGE_ATTR_ID
DAC_CH_RANGE_SEL_ATTR_ID
DAC_CH_LDAC_TRIGGER_ATTR_ID
DAC_CH_TOGGLE_TRIGGER_ATTR_ID
DAC_CH_DITHER_TRIGGER_ATTR_ID
DAC_CH_OUTPUT_STATE_ATTR_ID
MULTI_DAC_CH_SEL_ATTR_ID
NUM_OF_CHN_ATTR

Function Documentation

ad5706r_iio_event_handler()

void ad5706r_iio_event_handler

(

void

)

Run the AD5706R IIO event handler.

Returns

none

This function monitors the new IIO client event

Here is the caller graph for this function:

ad5706r_iio_initialize()

int32_t ad5706r_iio_initialize

(

void

)

Initialize the IIO interface for AD5706R IIO device.

Returns

0 in case of success,negative error code otherwise

Here is the caller graph for this function:

ad5706r_populate_func_mode_data()

void ad5706r_populate_func_mode_data

(

struct ad5706r_dev *

device

)

Build the command word for Func Mode Update.

Parameters

device[in]

- AD5706R Device descriptor

Returns

0 in case of success or negative value otherwise.

ad5706r_populate_ldac_mode_data()

void ad5706r_populate_ldac_mode_data	(	struct ad5706r_dev *	device,
		struct iio_device_data *	iio_dev_data
	)

Build the comman word for a SW LDAC Update with the data to be written to the respective input register.

Parameters

device[in]	- AD5706R Device descriptor
iio_dev_data[in]	- IIO Device Data

Returns

0 in case of success or negative value otherwise.

ad5706r_reconfig_ldac()

int ad5706r_reconfig_ldac

(

struct ad5706r_dev *

device

)

Reconfigure LDAC pin as GPIO output.

Parameters

device[in]

- AD5706R device instance

Returns

0 in case of success, negative error code otherwise

ad5706r_set_sampling_rate()

int32_t ad5706r_set_sampling_rate

(

uint32_t *

sampling_rate

)

Set the sampling rate and get the updated value supported by MCU platform.

Parameters

update_rate[in,out]

- Update rate value

Returns

0 in case of success, negative error code otherwise

iio_params_deinit()

void iio_params_deinit

(

void

)

DeInitialize the IIO parameters.

Here is the caller graph for this function:

Variable Documentation

ad5706r_dev_inst

struct ad5706r_dev* ad5706r_dev_inst[NUM_IIO_DEVICES] = { NULL, NULL }

ad5706r_iio_dev

struct iio_device* ad5706r_iio_dev[NUM_IIO_DEVICES]

ad5706r_update_rate

uint32_t ad5706r_update_rate = AD5706_MAX_UPDATE_RATE

hw_mode_enabled

bool hw_mode_enabled = false

iio_ad5706r_scan_type

struct scan_type iio_ad5706r_scan_type[NUM_IIO_DEVICES][AD5706R_NUM_CH]

Initial value:

= {
    {
        AD5706_DEFAULT_CHN_SCAN,
        AD5706_DEFAULT_CHN_SCAN,
        AD5706_DEFAULT_CHN_SCAN,
        AD5706_DEFAULT_CHN_SCAN,
    },
    {
        AD5706_DEFAULT_CHN_SCAN,
        AD5706_DEFAULT_CHN_SCAN,
        AD5706_DEFAULT_CHN_SCAN,
        AD5706_DEFAULT_CHN_SCAN,
    },
}

iio_init_params

struct iio_init_param iio_init_params

Initial value:

= {
    .phy_type = USE_UART,
 
    .trigs = &iio_trigger_init_params,
 
}

iio_trigger_init_params

struct iio_trigger_init iio_trigger_init_params

Initial value:

= {
    .descriptor = &ad5706r_iio_trig_desc,
    .name = AD5706_IIO_TRIGGER_NAME,
}

n_bytes

uint8_t n_bytes = 0

sw_mode_enabled

bool sw_mode_enabled = false