ad5446.c File Reference

Implementation of AD5446 Driver. This driver supporting the following devices: AD5553, AD5543, AD5542A, AD5541A, AD5512A, AD5453, AD5452, AD5451, AD5450, AD5446, AD5444. More...

#include <stdlib.h>
#include "ad5446.h"
#include "no_os_alloc.h"

Include dependency graph for ad5446.c:

Macros
#define	MAX_RESOLUTION   16 /* Maximum resolution of supported devices */
#define	DATA_MASK(x)   (0xFFFF >> (MAX_RESOLUTION - (x)))
#define	DATA_OFFSET(x)   ((MAX_RESOLUTION - 2) - (x))
#define	MSB_MASK   0xFF00
#define	MSB_OFFSET   8
#define	LSB_MASK   0x00FF
#define	LSB_OFFSET   0
#define	CMD_MASK   0x3
#define	CMD_OFFSET   15
#define	PKT_LENGTH   2 /* SPI packet length in byte */

Functions
int8_t	ad5446_init (struct ad5446_dev **device, struct ad5446_init_param init_param)
	Initialize SPI and Initial Values for AD5446 Board. More...
int32_t	ad5446_remove (struct ad5446_dev *dev)
	Free the resources allocated by ad5446_init(). More...
void	ad5446_set_register (struct ad5446_dev *dev, uint8_t command, uint16_t data)
	Writes to input register via SPI. More...
float	ad5446_set_voltage (struct ad5446_dev *dev, float voltage, float vref, enum vout_type_t vout_type)
	Sets the output voltage. More...

Detailed Description

Implementation of AD5446 Driver. This driver supporting the following devices: AD5553, AD5543, AD5542A, AD5541A, AD5512A, AD5453, AD5452, AD5451, AD5450, AD5446, AD5444.

Author

Istvan Csomortani (istva.nosp@m.n.cs.nosp@m.omort.nosp@m.ani@.nosp@m.analo.nosp@m.g.co.nosp@m.m)

Copyright 2013(c) Analog Devices, Inc.

All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
• Neither the name of Analog Devices, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
• The use of this software may or may not infringe the patent rights of one or more patent holders. This license does not release you from the requirement that you obtain separate licenses from these patent holders to use this software.
• Use of the software either in source or binary form, must be run on or directly connected to an Analog Devices Inc. component.

THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

• LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Macro Definition Documentation

CMD_MASK

#define CMD_MASK   0x3

CMD_OFFSET

#define CMD_OFFSET   15

DATA_MASK

#define DATA_MASK

(

x

)

(0xFFFF >> (MAX_RESOLUTION - (x)))

DATA_OFFSET

#define DATA_OFFSET

(

x

)

((MAX_RESOLUTION - 2) - (x))

LSB_MASK

#define LSB_MASK   0x00FF

LSB_OFFSET

#define LSB_OFFSET   0

MAX_RESOLUTION

#define MAX_RESOLUTION   16 /* Maximum resolution of supported devices */

MSB_MASK

#define MSB_MASK   0xFF00

MSB_OFFSET

#define MSB_OFFSET   8

PKT_LENGTH

#define PKT_LENGTH   2 /* SPI packet length in byte */

Function Documentation

ad5446_init()

int8_t ad5446_init	(	struct ad5446_dev **	device,
		struct ad5446_init_param	init_param
	)

Initialize SPI and Initial Values for AD5446 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.

ad5446_remove()

int32_t ad5446_remove

(

struct ad5446_dev *

dev

)

Free the resources allocated by ad5446_init().

Parameters

dev	- The device structure.

Returns

0 in case of success, negative error code otherwise.

ad5446_set_register()

void ad5446_set_register	(	struct ad5446_dev *	dev,
		uint8_t	command,
		uint16_t	data
	)

Writes to input register via SPI.

Parameters

dev	- The device structure.
command	- Command to be transmitted to the device.
data	- Data to be written in input register.

Returns

None.

ad5446_set_voltage()

float ad5446_set_voltage	(	struct ad5446_dev *	dev,
		float	voltage,
		float	vref,
		enum vout_type_t	vout_type
	)

Sets the output voltage.

Parameters

dev	- The device structure.
voltage	- The voltage value in volts
vref	- The voltage reference used by the device in volts.
vout_type	- Voltage output type: unipolar/unipolar_inv/bipolar

Returns

Actual voltage that the device can output.