Implementation of AD405X IIO Application Interface. More...

#include <string.h>
#include <math.h>
#include "app_config.h"
#include "ad405x.h"
#include "ad405x_iio.h"
#include "ad405x_user_config.h"
#include "common.h"
#include "no_os_error.h"
#include "no_os_gpio.h"
#include "no_os_pwm.h"
#include "no_os_alloc.h"
#include "no_os_util.h"
#include "iio_trigger.h"

Include dependency graph for ad405x_iio.c:

Macros
#define	AD405X_CHN_ATTR(_name, _priv)

#define	AD405X_CHN_AVAIL_ATTR(_name, _priv)

#define	DATA_BUFFER_SIZE (131072)

#define	NUM_OF_IIO_DEVICES 1

#define	AD405X_IIO_TRIGGER_NAME ACTIVE_DEVICE_NAME"_iio_trigger"

#define	REAL_BITS ADC_SAMPLE_MODE_RESOLUTION

#define	STORAGE_BITS 16

#define	BYTES_PER_SAMPLE (STORAGE_BITS/8)

#define	INTERNAL_SAMPLING_CLK_NS 500

#define	CONVERSION_TIME_NS 250

#define	SPI_BURST_DATA_READ_TIME_NS 1100

#define	MAX_SAMPLING_TIME_NS (((float)(1.0/SAMPLING_RATE) * 1000000000) / 2)

#define	MAX_SAMPLING_PERIOD_NSEC 1000000

#define	PWM_PERIOD_TO_FREQUENCY(x) (1000000000.0 / x)

#define	BUF_READ_TIMEOUT 0xffffffff

#define	BUFFER_UPDATE_RATE 400

#define	MAX_LOCAL_BUF_SIZE 32000

#define	MAX_DMA_NDTR (no_os_min(65535, MAX_LOCAL_BUF_SIZE/2))

Enumerations
enum	ad405x_attribute_ids { ADC_RAW , ADC_SCALE , ADC_OFFSET , ADC_OPERATING_MODE , ADC_SAMPLE_RATE }

Functions
int32_t	ad405x_stop_data_capture (void)
	Stop a data capture from continuous/burst mode. More...

void	data_capture_callback (void *context)
	Interrupt Service Routine to monitor data ready event. More...

int32_t	iio_ad405x_initialize (void)
	Initialize the IIO interface for AD405X IIO device. More...

void	iio_ad405x_event_handler (void)
	Run the AD405X IIO event handler. More...

Variables
struct ad405x_dev *	p_ad405x_dev = NULL

struct iio_device *	p_iio_ad405x_dev

volatile bool	data_ready = false

volatile uint32_t *	buff_start_addr

uint8_t	local_buf [MAX_LOCAL_BUF_SIZE]

volatile bool	dma_config_updated = false

volatile struct iio_device_data *	iio_dev_data_g

uint32_t	nb_of_samples_g

int32_t	data_read

struct no_os_spi_msg	ad405x_spi_msg

struct stm32_spi_init_param *	spi_init_param

Detailed Description

Implementation of AD405X IIO Application Interface.

This module acts as an interface for AD405X IIO device

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

◆ AD405X_CHN_ATTR

#define AD405X_CHN_ATTR	(	_name,
		_priv
	)

Value:

        {\
        .name = _name,\
        .priv = _priv,\
        .show = iio_ad405x_attr_get,\
        .store = iio_ad405x_attr_set\
}

◆ AD405X_CHN_AVAIL_ATTR

#define AD405X_CHN_AVAIL_ATTR	(	_name,
		_priv
	)

Value:

    {\
    .name = _name,\
    .priv = _priv,\
    .show = iio_ad405x_attr_available_get,\
    .store = iio_ad405x_attr_available_set\
}

◆ AD405X_IIO_TRIGGER_NAME

#define AD405X_IIO_TRIGGER_NAME ACTIVE_DEVICE_NAME"_iio_trigger"

◆ BUF_READ_TIMEOUT

#define BUF_READ_TIMEOUT 0xffffffff

◆ BUFFER_UPDATE_RATE

#define BUFFER_UPDATE_RATE 400

◆ BYTES_PER_SAMPLE

#define BYTES_PER_SAMPLE (STORAGE_BITS/8)

◆ CONVERSION_TIME_NS

#define CONVERSION_TIME_NS 250

◆ DATA_BUFFER_SIZE

#define DATA_BUFFER_SIZE (131072)

◆ INTERNAL_SAMPLING_CLK_NS

#define INTERNAL_SAMPLING_CLK_NS 500

◆ MAX_DMA_NDTR

#define MAX_DMA_NDTR (no_os_min(65535, MAX_LOCAL_BUF_SIZE/2))

◆ MAX_LOCAL_BUF_SIZE

#define MAX_LOCAL_BUF_SIZE 32000

◆ MAX_SAMPLING_PERIOD_NSEC

#define MAX_SAMPLING_PERIOD_NSEC 1000000

◆ MAX_SAMPLING_TIME_NS

#define MAX_SAMPLING_TIME_NS (((float)(1.0/SAMPLING_RATE) * 1000000000) / 2)

◆ NUM_OF_IIO_DEVICES

#define NUM_OF_IIO_DEVICES 1

◆ PWM_PERIOD_TO_FREQUENCY

#define PWM_PERIOD_TO_FREQUENCY ( x ) (1000000000.0 / x)

◆ REAL_BITS

#define REAL_BITS ADC_SAMPLE_MODE_RESOLUTION

◆ SPI_BURST_DATA_READ_TIME_NS

#define SPI_BURST_DATA_READ_TIME_NS 1100

◆ STORAGE_BITS

#define STORAGE_BITS 16

Enumeration Type Documentation

◆ ad405x_attribute_ids

enum ad405x_attribute_ids

Enumerator
ADC_RAW
ADC_SCALE
ADC_OFFSET
ADC_OPERATING_MODE
ADC_SAMPLE_RATE

Function Documentation

◆ ad405x_stop_data_capture()

int32_t ad405x_stop_data_capture ( void )

Stop a data capture from continuous/burst mode.

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

◆ data_capture_callback()

void data_capture_callback ( void * context )

Interrupt Service Routine to monitor data ready event.

Parameters

context[in] - Callback context (unused)

Returns: none

◆ iio_ad405x_event_handler()

void iio_ad405x_event_handler ( void )

Run the AD405X IIO event handler.

Returns: none

This function monitors the new IIO client event

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◆ iio_ad405x_initialize()

int32_t iio_ad405x_initialize ( void )

Initialize the IIO interface for AD405X IIO device.

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

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Variable Documentation

◆ ad405x_spi_msg

struct no_os_spi_msg ad405x_spi_msg

◆ buff_start_addr

volatile uint32_t* buff_start_addr

◆ data_read

int32_t data_read

◆ data_ready

volatile bool data_ready = false

◆ dma_config_updated

volatile bool dma_config_updated = false

◆ iio_dev_data_g

volatile struct iio_device_data* iio_dev_data_g

◆ local_buf

uint8_t local_buf[MAX_LOCAL_BUF_SIZE]

◆ nb_of_samples_g

uint32_t nb_of_samples_g

◆ p_ad405x_dev

struct ad405x_dev* p_ad405x_dev = NULL

◆ p_iio_ad405x_dev

struct iio_device* p_iio_ad405x_dev

◆ spi_init_param

struct stm32_spi_init_param* spi_init_param

Macros

Enumerations

Functions

Variables