ad7490.c File Reference

Source file of AD7490 Driver. More...

#include "ad7490.h"
#include "no_os_alloc.h"
#include "no_os_error.h"
#include "no_os_delay.h"

Include dependency graph for ad7490.c:

Macros
#define	AD7490_DUMMY_TRANSFER   0xFFFF

Functions
int	ad7490_set_op_mode (struct ad7490_desc *desc, enum ad7490_op_mode op_mode)
	Set AD7490 operating mode.
int	ad7490_config (struct ad7490_desc *desc, enum ad7490_dout_state dout_state, enum ad7490_range range, enum ad7490_coding coding)
	Config DOUT state, range and coding of the AD7490.
int	ad7490_read_ch (struct ad7490_desc *desc, enum ad7490_address channel, int16_t *val)
	Read single cannel raw value.
int	ad7490_start_seq (struct ad7490_desc *desc, enum ad7490_seq_op seq_op, uint16_t channels, enum ad7490_address last_chan)
	Start AD7490 SEQUENCER using desired type.
int	ad7490_change_seq (struct ad7490_desc *desc, enum ad7490_seq_op seq_op, enum ad7490_coding coding, enum ad7490_range range)
	Change AD7490 SEQUENCER type while it is active.
int	ad7490_stop_seq (struct ad7490_desc *desc)
	Stop AD7490 SEQUENCER.
int	ad7490_read_seq (struct ad7490_desc *desc, int16_t *channels_val)
	Read selected channels of the SEQUENCER raw values.
int	ad7490_init (struct ad7490_desc **desc, struct ad7490_init_param *init_param)
	AD7490 Initialization function.
int	ad7490_remove (struct ad7490_desc *desc)
	Free the resources allocated by initialization.

Detailed Description

Source file of AD7490 Driver.

Author

Radu Sabau (radu..nosp@m.saba.nosp@m.u@ana.nosp@m.log..nosp@m.com)

Copyright 2025(c) Analog Devices, Inc.

SPDX-License-Identifier: BSD-3-Clause

Macro Definition Documentation

AD7490_DUMMY_TRANSFER

#define AD7490_DUMMY_TRANSFER   0xFFFF

Function Documentation

ad7490_change_seq()

int ad7490_change_seq	(	struct ad7490_desc *	desc,
		enum ad7490_seq_op	seq_op,
		enum ad7490_coding	coding,
		enum ad7490_range	range )

Change AD7490 SEQUENCER type while it is active.

Parameters

desc	- AD7490 device descriptor.
seq_op	- Selected SEQUENCER type to change to.
coding	- If CONTROL sequencer is selected, coding is requested.
range	-If CONTROL sequencer is selected, range is requested.

Returns

0 in case of success, negative error code otherwise.

ad7490_config()

int ad7490_config	(	struct ad7490_desc *	desc,
		enum ad7490_dout_state	dout_state,
		enum ad7490_range	range,
		enum ad7490_coding	coding )

Config DOUT state, range and coding of the AD7490.

Parameters

desc	- AD7490 device descriptor.
dout_state	- Selected DOUT state.
range	- Selected range (REFIN or 2xREFIN)
coding	- Selected coding style (binary or twos)

Returns

0 in case of success, negative error code otherwise.

ad7490_init()

int ad7490_init	(	struct ad7490_desc **	desc,
		struct ad7490_init_param *	init_param )

AD7490 Initialization function.

Parameters

desc	- AD7490 device descriptor.
init_param	- AD7490 initialization parameter.

Returns

0 in case of success, negative error code otherwise.

ad7490_read_ch()

int ad7490_read_ch	(	struct ad7490_desc *	desc,
		enum ad7490_address	channel,
		int16_t *	val )

Read single cannel raw value.

Parameters

desc	- AD7490 device descriptor.
channel	- Selected channel for value reading.
val	- Pointer to the selected channel's raw value.

Returns

0 in case of success, negative error code otherwise.

ad7490_read_seq()

int ad7490_read_seq	(	struct ad7490_desc *	desc,
		int16_t *	channels_val )

Read selected channels of the SEQUENCER raw values.

Parameters

desc	- AD7490 device descriptor.
channels_val	- Pointer to selected channels raw values array. Raw channels values are to be transmitted consecutive (e.g. if channels 0, 3, and 7 are selected, channels_val becomes an array with 3 elements, and index 0 is for channel 0, index 1 for channel 3, and index 2 for channel 7).

Returns

0 in case of success, negative error code otherwise.

ad7490_remove()

int ad7490_remove

(

struct ad7490_desc *

desc

)

Free the resources allocated by initialization.

Parameters

desc	- AD7490 device descriptor.

Returns

0 in case of success, negative error code otherwise.

ad7490_set_op_mode()

int ad7490_set_op_mode	(	struct ad7490_desc *	desc,
		enum ad7490_op_mode	op_mode )

Set AD7490 operating mode.

Parameters

desc	- AD7490 device descriptor
op_mode	- Selected operating mode.

Returns

0 in case of success, negative error code otherwise.

ad7490_start_seq()

int ad7490_start_seq	(	struct ad7490_desc *	desc,
		enum ad7490_seq_op	seq_op,
		uint16_t	channels,
		enum ad7490_address	last_chan )

Start AD7490 SEQUENCER using desired type.

Parameters

desc	- AD7490 device descriptor.
seq_op	- Selected SEQUENCER type.
channels	- 16 bit channel mask for channel selection (1 = ON, 0 = OFF)
last_chan	- In case CONSECUTIVE sequencer typee is selected, last channel is needed for conversion and all channels until the last one will be then selected.

Returns

0 in case of success, negative error code otherwise.

ad7490_stop_seq()

int ad7490_stop_seq

(

struct ad7490_desc *

desc

)

Stop AD7490 SEQUENCER.

Parameters

desc	- AD7490 device descriptor.

Returns

0 in case of success, negative error code otherwise.