ad799x.c File Reference

Implementation of AD799x Driver. More...

#include <stdlib.h>
#include "ad799x.h"
#include "no_os_alloc.h"

Include dependency graph for ad799x.c:

Functions
int8_t	ad799x_init (struct ad799x_dev **device, struct ad799x_init_param init_param)
	Initializes I2C.
int32_t	ad799x_remove (struct ad799x_dev *dev)
	Free the resources allocated by ad799x_init().
void	ad799x_set_configuration_reg (struct ad799x_dev *dev, uint8_t register_value)
	Writes data into the Configuration Register.
void	ad799x_get_conversion_result (struct ad799x_dev *dev, int16_t *conv_value, int8_t *channel)
	Reads the High byte and the Low byte of the conversion.
float	ad799x_convert_to_volts (struct ad799x_dev *dev, int16_t raw_sample, float v_ref)
	Converts a raw sample to volts.

Detailed Description

Implementation of AD799x Driver.

Author

DNechita (Dan.N.nosp@m.echi.nosp@m.ta@an.nosp@m.alog.nosp@m..com)

Copyright 2012(c) Analog Devices, Inc.

SPDX-License-Identifier: BSD-3-Clause

Function Documentation

ad799x_convert_to_volts()

float ad799x_convert_to_volts	(	struct ad799x_dev *	dev,
		int16_t	raw_sample,
		float	v_ref )

Converts a raw sample to volts.

Parameters

dev	- The device structure.
raw_sample	- The data sample.
v_ref	- The value of the voltage reference used by the device.

Returns

voltage - The result of the conversion expressed as volts.

ad799x_get_conversion_result()

void ad799x_get_conversion_result	(	struct ad799x_dev *	dev,
		int16_t *	conv_value,
		int8_t *	channel )

Reads the High byte and the Low byte of the conversion.

Parameters

dev	- The device structure.
conv_value	- It is used to store the conversion value.
channel	- Stores the channel number for the current conversion.

ad799x_init()

int8_t ad799x_init	(	struct ad799x_dev **	device,
		struct ad799x_init_param	init_param )

Initializes I2C.

Parameters

device	- The device structure.
init_param	- The structure that contains the device initial parameters.

Returns

status - Initialization status. Example: -1 - Initialization failed; 0 - Initialization succeeded.

ad799x_remove()

int32_t ad799x_remove

(

struct ad799x_dev *

dev

)

Free the resources allocated by ad799x_init().

Parameters

dev	- The device structure.

Returns

0 in case of success, negative error code otherwise.

ad799x_set_configuration_reg()

void ad799x_set_configuration_reg	(	struct ad799x_dev *	dev,
		uint8_t	register_value )

Writes data into the Configuration Register.

Parameters

dev	- The device structure.
register_value	- Data value to write.