AD4130 device No-OS driver supports. More...

#include <stdint.h>
#include "app_config.h"
#include "ad4130_support.h"
#include "ad4130_user_config.h"
#include "no_os_error.h"

Include dependency graph for ad4130_support.c:

Macros
#define	AD4130_FIFO_MAX_SIZE (256)

#define	AD4130_FIFO_READ_CMD_BYTES (2)

#define	BYTE_SIZE (8)

#define	CONV_MON_GPIO_TIMEOUT (10000)

#define	FIFO_BUSY_TIME (20)

Functions
float	ad4130_get_reference_voltage (struct ad413x_dev *dev, uint8_t chn)
	Get reference voltage based on the reference source. More...

int32_t	perform_sign_conversion (struct ad413x_dev *dev, uint32_t adc_raw_data, uint8_t chn)
	Perform the sign conversion for handling negative voltages in bipolar mode. More...

float	convert_adc_sample_into_voltage (void *dev, uint32_t adc_raw, uint8_t chn)
	Convert the ADC raw value into equivalent voltage. More...

float	convert_adc_data_to_voltage_without_vref (void *dev, int32_t data, uint8_t chn)
	Convert ADC data to voltage without Vref. More...

float	convert_adc_data_to_voltage_wrt_vref (void *dev, int32_t data, uint8_t chn)
	Convert ADC data to voltage w.r.t Vref. More...

float	convert_adc_raw_into_rtd_resistance (void *dev, uint32_t adc_raw, float rtd_ref, uint8_t chn)
	Convert the ADC raw value into equivalent RTD resistance. More...

int32_t	ad413x_read_single_sample (struct ad413x_dev dev, uint8_t input_chn, uint32_t adc_raw)
	Function to read the single ADC sample (raw data) for input channel. More...

int32_t	ad413x_mon_conv_and_read_data (struct ad413x_dev dev, uint32_t raw_data)
	Function to monitor end of conversion and read conversion result. More...

int32_t	ad4130_read_fifo (struct ad413x_dev dev, uint32_t data, uint32_t adc_samples)
	Read the data from FIFO. More...

int32_t	ad413x_set_int_source (struct ad413x_dev *dev, adc_conv_int_source_e conv_int_source)
	Set interrupt conversion source (GPIO) More...

int32_t	ad413x_set_filter_fs (struct ad413x_dev *dev, uint32_t fs, uint8_t preset)
	Set filter FS value. More...

Detailed Description

AD4130 device No-OS driver supports.

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

◆ AD4130_FIFO_MAX_SIZE

#define AD4130_FIFO_MAX_SIZE (256)

◆ AD4130_FIFO_READ_CMD_BYTES

#define AD4130_FIFO_READ_CMD_BYTES (2)

◆ BYTE_SIZE

#define BYTE_SIZE (8)

◆ CONV_MON_GPIO_TIMEOUT

#define CONV_MON_GPIO_TIMEOUT (10000)

◆ FIFO_BUSY_TIME

#define FIFO_BUSY_TIME (20)

Function Documentation

◆ ad4130_get_reference_voltage()

float ad4130_get_reference_voltage	(	struct ad413x_dev *	dev,
		uint8_t	chn
	)

Get reference voltage based on the reference source.

Parameters

dev[in]	- Device instance
chn[in]	- ADC channel

Returns: Reference voltage

◆ ad4130_read_fifo()

int32_t ad4130_read_fifo	(	struct ad413x_dev *	dev,
		uint32_t *	data,
		uint32_t	adc_samples
	)

Read the data from FIFO.

Parameters

dev[in]	- device instance
data[in]	- Buffer to store FIFO data
adc_samples[in]	- Number of ADC samples to read

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

Note: This function doesn't consider the FIFO status and header information during data readback. It is assumed data user is intending to read only the data from FIFO.

◆ ad413x_mon_conv_and_read_data()

int32_t ad413x_mon_conv_and_read_data	(	struct ad413x_dev *	dev,
		uint32_t *	raw_data
	)

Function to monitor end of conversion and read conversion result.

Parameters

dev[in]	- Device instance
raw_data[in,out]-	ADC raw data

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

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◆ ad413x_read_single_sample()

int32_t ad413x_read_single_sample	(	struct ad413x_dev *	dev,
		uint8_t	input_chn,
		uint32_t *	adc_raw
	)

Function to read the single ADC sample (raw data) for input channel.

Parameters

dev[in]	- Device instance
input_chn[in]	- Input channel to be sampled and read data for
adc_raw[in,out]-	ADC raw data

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

Note: The single conversion mode is used to read a single sample

◆ ad413x_set_filter_fs()

int32_t ad413x_set_filter_fs	(	struct ad413x_dev *	dev,
		uint32_t	fs,
		uint8_t	preset
	)

Set filter FS value.

Parameters

dev[in]	- Device instance
fs[in]-	FS value
preset[in]	- Channel setup

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

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◆ ad413x_set_int_source()

int32_t ad413x_set_int_source	(	struct ad413x_dev *	dev,
		adc_conv_int_source_e	conv_int_source
	)

Set interrupt conversion source (GPIO)

Parameters

dev[in]	- Device instance
conv_int_source[in]-	Interrupt source

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

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◆ convert_adc_data_to_voltage_without_vref()

float convert_adc_data_to_voltage_without_vref	(	void *	dev,
		int32_t	data,
		uint8_t	chn
	)

Convert ADC data to voltage without Vref.

Parameters

dev[in]	- Device instance
data[in]	- ADC data in straight binary format (signed)
chn[in]	- ADC channel

Returns: voltage

◆ convert_adc_data_to_voltage_wrt_vref()

float convert_adc_data_to_voltage_wrt_vref	(	void *	dev,
		int32_t	data,
		uint8_t	chn
	)

Convert ADC data to voltage w.r.t Vref.

Parameters

dev[in]	- Device instance
data[in]	- ADC data in straight binary format (signed)
chn[in]	- ADC channel

Returns: voltage

◆ convert_adc_raw_into_rtd_resistance()

float convert_adc_raw_into_rtd_resistance	(	void *	dev,
		uint32_t	adc_raw,
		float	rtd_ref,
		uint8_t	chn
	)

Convert the ADC raw value into equivalent RTD resistance.

Parameters

dev[in]	- Device instance
adc_raw[in]	- ADC raw sample
rtd_ref[in]	- RTD reference resistance in ohms
chn[in]	- ADC channel

Returns: RTD resistance value

Note: RTD is biased with constant excitation current. Below formula is based on ratiometric measurement, where fixed value of RTD RREF (reference resistor) and gain is taken into account

◆ convert_adc_sample_into_voltage()

float convert_adc_sample_into_voltage	(	void *	dev,
		uint32_t	adc_raw,
		uint8_t	chn
	)

Convert the ADC raw value into equivalent voltage.

Parameters

dev[in]	- Device instance
adc_raw[in]-	ADC raw data
chn[in]	- ADC channel

Returns: ADC voltage value

◆ perform_sign_conversion()

int32_t perform_sign_conversion	(	struct ad413x_dev *	dev,
		uint32_t	adc_raw_data,
		uint8_t	chn
	)

Perform the sign conversion for handling negative voltages in bipolar mode.

Parameters

dev[in]	- Device instance
adc_raw_data[in]	- ADC raw value
chn[in]	- ADC Channel

Returns: ADC data after signed conversion

Macros

Functions

Detailed Description

Macro Definition Documentation

◆ AD4130_FIFO_MAX_SIZE

◆ AD4130_FIFO_READ_CMD_BYTES

◆ BYTE_SIZE

◆ CONV_MON_GPIO_TIMEOUT

◆ FIFO_BUSY_TIME

Function Documentation

◆ ad4130_get_reference_voltage()

◆ ad4130_read_fifo()

◆ ad413x_mon_conv_and_read_data()

◆ ad413x_read_single_sample()

◆ ad413x_set_filter_fs()

◆ ad413x_set_int_source()

◆ convert_adc_data_to_voltage_without_vref()

◆ convert_adc_data_to_voltage_wrt_vref()

◆ convert_adc_raw_into_rtd_resistance()

◆ convert_adc_sample_into_voltage()

◆ perform_sign_conversion()