ltc2672_iio.c File Reference

Implementation of LTC2672 IIO application interfaces. More...

#include <stdio.h>
#include <string.h>
#include "app_config.h"
#include "ltc2672_iio.h"
#include "ltc2672_user_config.h"
#include "common.h"
#include "no_os_util.h"
#include "no_os_delay.h"
#include "no_os_alloc.h"

Include dependency graph for ltc2672_iio.c:

Macros
#define	LTC2672_CHN_ATTR(_name, _priv)
#define	LTC2672_CHN_AVAIL_ATTR(_name, _priv)
#define	LTC2672_CH(_name, _idx, _type)
#define	NUM_OF_IIO_DEVICES   1
#define	BYTES_PER_SAMPLE   sizeof(uint16_t)
#define	BYTE_SIZE   (uint32_t)8
#define	BYTE_MASK   (uint32_t)0xff
#define	CHN_STORAGE_BITS   (BYTES_PER_SAMPLE * 8)
#define	LTC2672_MIN_REF_VOLTAGE   1.225
#define	LTC2672_MAX_REF_VOLTAGE   1.275
#define	LTC2672_MIN_FSADJ_RESISTOR   19
#define	LTC2672_MAX_FSADJ_RESISTOR   41
#define	CONFIG_COMMAND(oc, pl, ts, rd)   (oc << 3) | (pl << 2) | (ts << 1) | (rd << 0)
#define	INDEX_TO_DEV_ID(x)   ((x * 2) + 1)

Enumerations
enum	ltc2672_iio_attr_id {   DAC_CH_RAW ,   DAC_CH_OFFSET ,   DAC_CH_SCALE ,   DAC_CH_SPAN ,   DAC_CH_CURRENT ,   DAC_CH_INPUT_A ,   DAC_CH_INPUT_B ,   DAC_CH_POWERDOWN ,   DAC_CH_SW_LDAC ,   DAC_CH_WRITE_TO_N_UPDATE_ALL ,   DAC_CH_TOGGLE_SEL ,   DAC_CH_OPEN_CIRCUIT_FAULT ,   DAC_RAW ,   DAC_SPAN ,   DAC_CURRENT ,   DAC_MUX ,   DAC_READBACK ,   DAC_RESET ,   DAC_HW_TOGGLE_STATE ,   DAC_TOGGLE_PWM ,   DAC_SAMPLE_RATE ,   DAC_CHIP_POWERDOWN ,   DAC_INPUT_A ,   DAC_INPUT_B ,   DAC_HW_LDAC ,   DAC_SW_LDAC ,   DAC_FAULT ,   DAC_OPEN_CIRCUIT_CONFIG ,   DAC_POWER_LIMIT_CONFIG ,   DAC_THERMAL_SHUTDOWN_CONFIG ,   DAC_EXTERNAL_REFERENCE_CONFIG ,   DAC_SW_TOGGLE_STATE ,   DAC_OVER_TEMP_FAULT ,   DAC_POWER_LIMIT_FAULT ,   DAC_SPI_LENGTH_FAULT ,   DAC_REFERENCE ,   DAC_RESISTOR ,   DAC_NO_OP }

Functions
int32_t	ltc2672_set_toggling_rate (uint32_t *toggling_rate)
	Set the toggling rate and get the updated value supported by MCU platform and the device.
int32_t	ltc2672_iio_init ()
	Initialize the IIO interface for LTC2672 IIO device.
void	ltc2672_iio_event_handler (void)
	Run the LTC2672 IIO event handler.

Variables
struct ltc2672_dev *	ltc2672_dev_desc
float	ref_voltage = DAC_VREF
float	resistor_fsadj = DAC_FSADJ_RESISTOR
uint8_t	toggle_sel_bits = 0
uint8_t	fault_register = 0
uint32_t	ltc2672_toggle_rate = LTC2672_MAX_TOGGLE_RATE

Detailed Description

Implementation of LTC2672 IIO application interfaces.

Copyright (c) 2023-25 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

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)

CONFIG_COMMAND

#define CONFIG_COMMAND	(		oc,
			pl,
			ts,
			rd
	)		(oc << 3) | (pl << 2) | (ts << 1) | (rd << 0)

INDEX_TO_DEV_ID

#define INDEX_TO_DEV_ID

(

x

)

((x * 2) + 1)

LTC2672_CH

#define LTC2672_CH	(		_name,
			_idx,
			_type
	)

Value:

    {\
    .name = _name, \
    .ch_type = _type,\
    .ch_out = true,\
    .indexed = true,\
    .channel = _idx,\
    .scan_index = _idx,\
    .scan_type = &ltc2672_iio_scan_type,\
    .attributes = ltc2672_iio_ch_attributes\
}

LTC2672_CHN_ATTR

#define LTC2672_CHN_ATTR	(		_name,
			_priv
	)

Value:

        {\
        .name = _name,\
        .priv = _priv,\
        .show = ltc2672_iio_attr_get,\
        .store = ltc2672_iio_attr_set\
}

LTC2672_CHN_AVAIL_ATTR

#define LTC2672_CHN_AVAIL_ATTR	(		_name,
			_priv
	)

Value:

        {\
        .name = _name,\
        .priv = _priv,\
        .show = ltc2672_iio_attr_available_get,\
        .store = ltc2672_iio_attr_available_set\
}

LTC2672_MAX_FSADJ_RESISTOR

#define LTC2672_MAX_FSADJ_RESISTOR   41

LTC2672_MAX_REF_VOLTAGE

#define LTC2672_MAX_REF_VOLTAGE   1.275

LTC2672_MIN_FSADJ_RESISTOR

#define LTC2672_MIN_FSADJ_RESISTOR   19

LTC2672_MIN_REF_VOLTAGE

#define LTC2672_MIN_REF_VOLTAGE   1.225

NUM_OF_IIO_DEVICES

#define NUM_OF_IIO_DEVICES   1

Enumeration Type Documentation

ltc2672_iio_attr_id

enum ltc2672_iio_attr_id

Enumerator
DAC_CH_RAW
DAC_CH_OFFSET
DAC_CH_SCALE
DAC_CH_SPAN
DAC_CH_CURRENT
DAC_CH_INPUT_A
DAC_CH_INPUT_B
DAC_CH_POWERDOWN
DAC_CH_SW_LDAC
DAC_CH_WRITE_TO_N_UPDATE_ALL
DAC_CH_TOGGLE_SEL
DAC_CH_OPEN_CIRCUIT_FAULT
DAC_RAW
DAC_SPAN
DAC_CURRENT
DAC_MUX
DAC_READBACK
DAC_RESET
DAC_HW_TOGGLE_STATE
DAC_TOGGLE_PWM
DAC_SAMPLE_RATE
DAC_CHIP_POWERDOWN
DAC_INPUT_A
DAC_INPUT_B
DAC_HW_LDAC
DAC_SW_LDAC
DAC_FAULT
DAC_OPEN_CIRCUIT_CONFIG
DAC_POWER_LIMIT_CONFIG
DAC_THERMAL_SHUTDOWN_CONFIG
DAC_EXTERNAL_REFERENCE_CONFIG
DAC_SW_TOGGLE_STATE
DAC_OVER_TEMP_FAULT
DAC_POWER_LIMIT_FAULT
DAC_SPI_LENGTH_FAULT
DAC_REFERENCE
DAC_RESISTOR
DAC_NO_OP

Function Documentation

ltc2672_iio_event_handler()

void ltc2672_iio_event_handler

(

void

)

Run the LTC2672 IIO event handler.

Returns

none.

This function monitors the new IIO client event.

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ltc2672_iio_init()

int32_t ltc2672_iio_init

(

void

)

Initialize the IIO interface for LTC2672 IIO device.

Returns

0 in case of success, negative error code otherwise.

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ltc2672_set_toggling_rate()

int32_t ltc2672_set_toggling_rate

(

uint32_t *

toggling_rate

)

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

Parameters

toggling_rate[in,out]

- Update rate value

Returns

0 in case of success, negative error code otherwise

Variable Documentation

fault_register

uint8_t fault_register = 0

ltc2672_dev_desc

struct ltc2672_dev* ltc2672_dev_desc

ltc2672_toggle_rate

uint32_t ltc2672_toggle_rate = LTC2672_MAX_TOGGLE_RATE

ref_voltage

float ref_voltage = DAC_VREF

resistor_fsadj

float resistor_fsadj = DAC_FSADJ_RESISTOR

toggle_sel_bits

uint8_t toggle_sel_bits = 0