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.

SPDX-License-Identifier: BSD-3-Clause

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.

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.

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.

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