ad9833.c File Reference

Implementation of ad9833 Driver for Microblaze processor. More...

#include <stdlib.h>
#include "ad9833.h"
#include "no_os_error.h"
#include "no_os_alloc.h"

Include dependency graph for ad9833.c:

Functions
int8_t	ad9833_init (struct ad9833_dev **device, struct ad9833_init_param init_param)
	Initialize the SPI communication with the device.
int32_t	ad9833_remove (struct ad9833_dev *dev)
	Free the resources allocated by ad9833_init().
void	ad9833_tx_spi (struct ad9833_dev *dev, int16_t value)
	Transmits 16 bits on SPI.
int8_t	ad9833_out_mode (struct ad9833_dev *dev, uint8_t out_mode)
	Selects the type of output.
void	ad9833_sleep_mode (struct ad9833_dev *dev, uint8_t sleep_mode)
	Enable / Disable the sleep function.
void	ad9833_set_freq (struct ad9833_dev *dev, uint8_t register_number, uint32_t frequency_value)
	Loads a frequency value in a register.
void	ad9833_set_phase (struct ad9833_dev *dev, uint8_t register_number, float phase_value)
	Loads a phase value in a register.
void	ad9833_select_freq_reg (struct ad9833_dev *dev, uint8_t freq_reg)
	Select the frequency register to be used.
void	ad9833_select_phase_reg (struct ad9833_dev *dev, uint8_t phase_reg)
	Select the phase register to be used.
void	ad9834_select_prog_method (struct ad9833_dev *dev, uint8_t value)
	Sets the programming method. (only for AD9834 & AD9838)
void	ad9834_logic_output (struct ad9833_dev *dev, uint8_t opbiten, uint8_t signpib, uint8_t div2)
	Configures the control register for logic output. (only for AD9834 & AD9838)

Variables
float	phase_const = 651.8986469f

Detailed Description

Implementation of ad9833 Driver for Microblaze processor.

Author

Lucian Sin (Lucia.nosp@m.n.Si.nosp@m.n@ana.nosp@m.log..nosp@m.com)

Copyright 2013(c) Analog Devices, Inc.

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

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. 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.
3. 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.

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

Function Documentation

ad9833_init()

int8_t ad9833_init	(	struct ad9833_dev **	device,
		struct ad9833_init_param	init_param )

Initialize the SPI communication with the device.

Parameters

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

Returns

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

ad9833_out_mode()

int8_t ad9833_out_mode	(	struct ad9833_dev *	dev,
		uint8_t	out_mode )

Selects the type of output.

Parameters

dev	- The device structure.
out_mode	- type of output Example AD9833&AD9837: 0 - Sinusoid. 1 - Triangle. 2 - DAC Data MSB/2. 3 - DAC Data MSB. Example AD9834&AD9838: 0 - Sinusoid. 1 - Triangle.

Returns

status - output type could / couldn't be selected. Example: 0 - output type possible for the given configuration. -1 - output type not possible for the given configuration.

ad9833_remove()

int32_t ad9833_remove

(

struct ad9833_dev *

dev

)

Free the resources allocated by ad9833_init().

Parameters

dev	- The device structure.

Returns

0 in case of success, negative error code otherwise.

ad9833_select_freq_reg()

void ad9833_select_freq_reg	(	struct ad9833_dev *	dev,
		uint8_t	freq_reg )

Select the frequency register to be used.

Parameters

dev	- The device structure.
freq_reg	- Number of frequency register. (0 / 1)

ad9833_select_phase_reg()

void ad9833_select_phase_reg	(	struct ad9833_dev *	dev,
		uint8_t	phase_reg )

Select the phase register to be used.

Parameters

dev	- The device structure.
phase_reg	- Number of phase register. (0 / 1)

ad9833_set_freq()

void ad9833_set_freq	(	struct ad9833_dev *	dev,
		uint8_t	register_number,
		uint32_t	frequency_value )

Loads a frequency value in a register.

Parameters

dev	- The device structure.
register_number	- Number of the register (0 / 1).
frequency_value	- Frequency value.

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ad9833_set_phase()

void ad9833_set_phase	(	struct ad9833_dev *	dev,
		uint8_t	register_number,
		float	phase_value )

Loads a phase value in a register.

Parameters

dev	- The device structure.
register_number	- Number of the register (0 / 1).
phase_value	- Phase value.

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ad9833_sleep_mode()

void ad9833_sleep_mode	(	struct ad9833_dev *	dev,
		uint8_t	sleep_mode )

Enable / Disable the sleep function.

Parameters

dev	- The device structure.
sleep_mode	- type of sleep Example soft method(all devices): 0 - No power-down. 1 - DAC powered down. 2 - Internal clock disabled. 3 - DAC powered down and Internal clock disabled. Example hard method(AD9834 & AD9838): 0 - No power-down. 1 - DAC powered down.

ad9833_tx_spi()

void ad9833_tx_spi	(	struct ad9833_dev *	dev,
		int16_t	value )

Transmits 16 bits on SPI.

Parameters

dev	- The device structure.
value	- Data which will be transmitted.

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ad9834_logic_output()

void ad9834_logic_output	(	struct ad9833_dev *	dev,
		uint8_t	opbiten,
		uint8_t	signpib,
		uint8_t	div2 )

Configures the control register for logic output. (only for AD9834 & AD9838)

Parameters

dev	- The device structure.
opbiten	- Enables / disables the logic output.
signpib	- Connects comparator / MSB to the SIGN BIT OUT pin.
div2	- MSB / MSB/2

ad9834_select_prog_method()

void ad9834_select_prog_method	(	struct ad9833_dev *	dev,
		uint8_t	value )

Sets the programming method. (only for AD9834 & AD9838)

Parameters

dev	- The device structure.
value	- soft or hard method. (0 / 1)

Variable Documentation

phase_const

float phase_const = 651.8986469f