Implementation of AD7091R IIO application interfaces. More...

#include <stdio.h>
#include <string.h>
#include "app_config.h"
#include "ad7091r_iio.h"
#include "ad7091r_user_config.h"
#include "ad7091r_support.h"
#include "common.h"
#include "iio_trigger.h"
#include "no_os_util.h"
#include "no_os_pwm.h"
#include "no_os_irq.h"

Include dependency graph for ad7091r_iio.c:

Macros
#define	AD7091R_CHN_ATTR(_name, _priv)

#define	AD7091R_CHN_AVAIL_ATTR(_name, _priv)

#define	AD7091R_CH(_name, _dev, _idx, _type)

#define	AD7091R_DEFAULT_CHN_SCAN

#define	NUM_OF_IIO_DEVICES 1

#define	AD7091R_IIO_TRIGGER_NAME "ad7091r_iio_trigger"

#define	BYTES_PER_SAMPLE sizeof(uint16_t)

#define	CHN_STORAGE_BITS (BYTES_PER_SAMPLE * 8)

#define	REGISTER_MAX_VAL AD7091R8_REG_CH_HYSTERESIS(7)

#define	AD7091R_LIMIT_REG_BIT_SHIFT 3

#define	DATA_BUFFER_SIZE (32768)

#define	BUF_READ_TIMEOUT 0xffffffff

#define	MAX_LOCAL_BUF_SIZE 8000

#define	MAX_DMA_NDTR (no_os_min(65535, MAX_LOCAL_BUF_SIZE))

Enumerations
enum	ad7091r_iio_attr_id { ADC_RAW , ADC_SCALE , ADC_OFFSET , ADC_LOW_LIMIT_REG , ADC_HIGH_LIMIT_REG , ADC_HYSTERESIS_REG , ADC_THRESHOLD_ALERT , NUM_OF_CHN_ATTR , REFERENCE_SELECT , REFERENCE_IN_VOLTS , DEVICE_MODE , SAMPLING_FREQUENCY , ALERT_BUSY_GPO0_EN , ALERT_POL_OR_GPO0_VAL , NUM_OF_DEV_ATTR = ALERT_POL_OR_GPO0_VAL - NUM_OF_CHN_ATTR }

Functions
int32_t	ad7091r_set_sampling_rate (uint32_t *sampling_rate)
	Set the sampling rate and get the updated value supported by MCU platform. More...

void	burst_capture_callback (void *context)
	Interrupt Service Routine to monitor end of conversion event. More...

int32_t	ad7091r_trigger_handler (struct iio_device_data *iio_dev_data)
	Push data into IIO buffer when trigger handler IRQ is invoked. More...

int	ad7091r_iio_init ()
	Initialize the IIO interface for AD7091R IIO device. More...

void	ad7091r_iio_event_handler (void)
	Run the AD7091R IIO event handler. More...

Variables
struct ad7091r8_dev *	ad7091r_dev_desc

struct scan_type	ad7091r_iio_scan_type = AD7091R_DEFAULT_CHN_SCAN

volatile bool	ad7091r_conversion_flag = false

volatile struct iio_device_data *	global_iio_dev_data

uint32_t	global_nb_of_samples

int32_t	data_read

volatile uint32_t *	buff_start_addr

volatile bool	dma_config_updated = false

struct stm32_spi_init_param *	spi_init_param

uint8_t	local_buf [MAX_LOCAL_BUF_SIZE]

Detailed Description

Implementation of AD7091R IIO application interfaces.

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

◆ AD7091R_CH

#define AD7091R_CH	(	_name,
		_dev,
		_idx,
		_type
	)

Value:

    {\
    .name = _name, \
    .ch_type = _type,\
    .ch_out = false,\
    .indexed = true,\
    .channel = _idx,\
    .scan_index = _idx,\
    .scan_type = &ad7091r_iio_scan_type,\
    .attributes = ad7091r_iio_ch_attributes[_dev]\
}

◆ AD7091R_CHN_ATTR

#define AD7091R_CHN_ATTR	(	_name,
		_priv
	)

Value:

        {\
        .name = _name,\
        .priv = _priv,\
        .show = ad7091r_iio_attr_get,\
        .store = ad7091r_iio_attr_set\
}

◆ AD7091R_CHN_AVAIL_ATTR

#define AD7091R_CHN_AVAIL_ATTR	(	_name,
		_priv
	)

Value:

        {\
        .name = _name,\
        .priv = _priv,\
        .show = ad7091r_iio_attr_available_get,\
        .store = ad7091r_iio_attr_available_set\
}

◆ AD7091R_DEFAULT_CHN_SCAN

#define AD7091R_DEFAULT_CHN_SCAN

Value:

    {\
    .sign = 'u',\
    .realbits = ADC_RESOLUTION,\
    .storagebits = CHN_STORAGE_BITS,\
    .shift = 0,\
    .is_big_endian = true\
}

◆ AD7091R_IIO_TRIGGER_NAME

#define AD7091R_IIO_TRIGGER_NAME "ad7091r_iio_trigger"

◆ AD7091R_LIMIT_REG_BIT_SHIFT

#define AD7091R_LIMIT_REG_BIT_SHIFT 3

◆ BUF_READ_TIMEOUT

#define BUF_READ_TIMEOUT 0xffffffff

◆ BYTES_PER_SAMPLE

#define BYTES_PER_SAMPLE sizeof(uint16_t)

◆ CHN_STORAGE_BITS

#define CHN_STORAGE_BITS (BYTES_PER_SAMPLE * 8)

◆ DATA_BUFFER_SIZE

#define DATA_BUFFER_SIZE (32768)

◆ MAX_DMA_NDTR

#define MAX_DMA_NDTR (no_os_min(65535, MAX_LOCAL_BUF_SIZE))

◆ MAX_LOCAL_BUF_SIZE

#define MAX_LOCAL_BUF_SIZE 8000

◆ NUM_OF_IIO_DEVICES

#define NUM_OF_IIO_DEVICES 1

◆ REGISTER_MAX_VAL

#define REGISTER_MAX_VAL AD7091R8_REG_CH_HYSTERESIS(7)

Enumeration Type Documentation

◆ ad7091r_iio_attr_id

enum ad7091r_iio_attr_id

Enumerator
ADC_RAW
ADC_SCALE
ADC_OFFSET
ADC_LOW_LIMIT_REG
ADC_HIGH_LIMIT_REG
ADC_HYSTERESIS_REG
ADC_THRESHOLD_ALERT
NUM_OF_CHN_ATTR
REFERENCE_SELECT
REFERENCE_IN_VOLTS
DEVICE_MODE
SAMPLING_FREQUENCY
ALERT_BUSY_GPO0_EN
ALERT_POL_OR_GPO0_VAL
NUM_OF_DEV_ATTR

Function Documentation

◆ ad7091r_iio_event_handler()

void ad7091r_iio_event_handler ( void )

Run the AD7091R IIO event handler.

Returns: none.

This function monitors the new IIO client event.

Here is the caller graph for this function:

◆ ad7091r_iio_init()

int ad7091r_iio_init ( void )

Initialize the IIO interface for AD7091R IIO device.

Returns: 0 in case of success, negative error code otherwise.

Here is the caller graph for this function:

◆ ad7091r_set_sampling_rate()

int32_t ad7091r_set_sampling_rate ( uint32_t * sampling_rate )

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

Parameters

samplig_rate[in,out] - Sampling rate value

Returns: 0 in case of success, negative error code otherwise

◆ ad7091r_trigger_handler()

int32_t ad7091r_trigger_handler ( struct iio_device_data * iio_dev_data )

Push data into IIO buffer when trigger handler IRQ is invoked.

Parameters

iio_dev_data[in] - IIO device data instance

Returns: 0 in case of success, negative error code otherwise

◆ burst_capture_callback()

void burst_capture_callback ( void * context )

Interrupt Service Routine to monitor end of conversion event.

Parameters

context[in] - Callback context (unused)

Returns: none

Variable Documentation

◆ ad7091r_conversion_flag

volatile bool ad7091r_conversion_flag = false

◆ ad7091r_dev_desc

struct ad7091r8_dev* ad7091r_dev_desc

◆ ad7091r_iio_scan_type

struct scan_type ad7091r_iio_scan_type = AD7091R_DEFAULT_CHN_SCAN

◆ buff_start_addr

volatile uint32_t* buff_start_addr

◆ data_read

int32_t data_read

◆ dma_config_updated

volatile bool dma_config_updated = false

◆ global_iio_dev_data

volatile struct iio_device_data* global_iio_dev_data

◆ global_nb_of_samples

uint32_t global_nb_of_samples

◆ local_buf

uint8_t local_buf[MAX_LOCAL_BUF_SIZE]

◆ spi_init_param

struct stm32_spi_init_param* spi_init_param

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ AD7091R_CH

◆ AD7091R_CHN_ATTR

◆ AD7091R_CHN_AVAIL_ATTR

◆ AD7091R_DEFAULT_CHN_SCAN

◆ AD7091R_IIO_TRIGGER_NAME

◆ AD7091R_LIMIT_REG_BIT_SHIFT

◆ BUF_READ_TIMEOUT

◆ BYTES_PER_SAMPLE

◆ CHN_STORAGE_BITS

◆ DATA_BUFFER_SIZE

◆ MAX_DMA_NDTR

◆ MAX_LOCAL_BUF_SIZE

◆ NUM_OF_IIO_DEVICES

◆ REGISTER_MAX_VAL

Enumeration Type Documentation

◆ ad7091r_iio_attr_id

Function Documentation

◆ ad7091r_iio_event_handler()

◆ ad7091r_iio_init()

◆ ad7091r_set_sampling_rate()

◆ ad7091r_trigger_handler()

◆ burst_capture_callback()

Variable Documentation

◆ ad7091r_conversion_flag

◆ ad7091r_dev_desc

◆ ad7091r_iio_scan_type

◆ buff_start_addr

◆ data_read

◆ dma_config_updated

◆ global_iio_dev_data

◆ global_nb_of_samples

◆ local_buf

◆ spi_init_param