ad5421.c File Reference

#include <stdlib.h>
#include "ad5421.h"
#include "no_os_alloc.h"

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Functions
int32_t	ad5421_init (struct ad5421_dev **device, struct ad5421_init_param init_param)
	Initialize SPI and Initial Values for AD5421 Board.
int32_t	ad5421_remove (struct ad5421_dev *dev)
	Free the resources allocated by ad5421_init().
void	ad5421_set_dac (struct ad5421_dev *dev, int32_t dac_value)
	Write to the DAC register.
void	ad5421_set_offset (struct ad5421_dev *dev, int32_t offset_value)
	Write to the Offset Adjust register.
void	ad5421_set_gain (struct ad5421_dev *dev, int32_t gain_value)
	Write to the Gain Adjust register.
int32_t	ad5421_get_dac (struct ad5421_dev *dev)
	Read from the DAC register.
int32_t	ad5421_get_offset (struct ad5421_dev *dev)
	Read from the Offset Adjust register.
int32_t	ad5421_get_gain (struct ad5421_dev *dev)
	Read from the Gain Adjust register.
int32_t	ad5421_get_fault (struct ad5421_dev *dev)
	Read from the Fault register.
int32_t	ad5421_get_temp (struct ad5421_dev *dev)
	Read the temperature from Fault register.
float	ad5421_get_vloop (struct ad5421_dev *dev)
	Read VLoop-COM from Fault register.
int32_t	ad5421_set (struct ad5421_dev *dev, int32_t *value)
	Send data via SPI.
int32_t	ad5421_get (struct ad5421_dev *dev)
	Read data via SPI.
void	ad5421_reset (struct ad5421_dev *dev)
	Resets the ad5421 device.

Function Documentation

ad5421_get()

int32_t ad5421_get

(

struct ad5421_dev *

dev

)

Read data via SPI.

Parameters

dev	- The device structure.

Returns

returnVal - Data read

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ad5421_get_dac()

int32_t ad5421_get_dac

(

struct ad5421_dev *

dev

)

Read from the DAC register.

Parameters

dev	- The device structure.

Returns

dacValue - value read from the register.

ad5421_get_fault()

int32_t ad5421_get_fault

(

struct ad5421_dev *

dev

)

Read from the Fault register.

Parameters

dev	- The device structure.

Returns

value - register content

ad5421_get_gain()

int32_t ad5421_get_gain

(

struct ad5421_dev *

dev

)

Read from the Gain Adjust register.

Parameters

dev	- The device structure.

Returns

gainValue - value calculated according to the datasheet formula

ad5421_get_offset()

int32_t ad5421_get_offset

(

struct ad5421_dev *

dev

)

Read from the Offset Adjust register.

Parameters

dev	- The device structure.

Returns

offsetValue - value calculated according to the datasheet formula.

ad5421_get_temp()

int32_t ad5421_get_temp

(

struct ad5421_dev *

dev

)

Read the temperature from Fault register.

Parameters

dev	- The device structure.

Returns

tempValue - temperature value in Celsius degrees.

ad5421_get_vloop()

float ad5421_get_vloop

(

struct ad5421_dev *

dev

)

Read VLoop-COM from Fault register.

Parameters

dev	- The device structure.

Returns

vlopValue - value of the voltage drop between Vloop and COM.

ad5421_init()

int32_t ad5421_init	(	struct ad5421_dev **	device,
		struct ad5421_init_param	init_param )

Initialize SPI and Initial Values for AD5421 Board.

Parameters

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

Returns

retValue - Result of the initialization. Example: 0 - if initialization was successful; -1 - if initialization was unsuccessful.

ad5421_remove()

int32_t ad5421_remove

(

struct ad5421_dev *

dev

)

Free the resources allocated by ad5421_init().

Parameters

dev	- The device structure.

Returns

0 in case of success, negative error code otherwise.

ad5421_reset()

void ad5421_reset

(

struct ad5421_dev *

dev

)

Resets the ad5421 device.

Parameters

dev	- The device structure.

ad5421_set()

int32_t ad5421_set	(	struct ad5421_dev *	dev,
		int32_t *	value )

Send data via SPI.

Parameters

dev	- The device structure.
value	- value to be sent via SPI

Returns

- Result of the initialization. Example: 0 - if initialization was successful; -1 - if initialization was unsuccessful.

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ad5421_set_dac()

void ad5421_set_dac	(	struct ad5421_dev *	dev,
		int32_t	dac_value )

Write to the DAC register.

Parameters

dev	- The device structure.
dac_value	- desired value to be written in register.

ad5421_set_gain()

void ad5421_set_gain	(	struct ad5421_dev *	dev,
		int32_t	gain_value )

Write to the Gain Adjust register.

Parameters

dev	- The device structure.
gain_value	- desired value to be written in register.

ad5421_set_offset()

void ad5421_set_offset	(	struct ad5421_dev *	dev,
		int32_t	offset_value )

Write to the Offset Adjust register.

Parameters

dev	- The device structure.
offset_value	- desired value to be written in register.