adf4157.c File Reference

Implementation of ADF4157 Driver for Microblaze processor. More...

#include <stdlib.h>
#include "adf4157.h"
#include "adf4157_cfg.h"
#include "no_os_alloc.h"

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Functions
int8_t	adf4157_init (struct adf4157_dev **device, struct adf4157_init_param init_param)
	Initialize the SPI communication with the device. More...
int32_t	adf4157_remove (struct adf4157_dev *dev)
	Free the resources allocated by adf4157_init(). More...
int8_t	adf4157_set (struct adf4157_dev *dev, uint32_t value)
	Transmits 32 bits on SPI. More...
int32_t	adf4157_tune_r_cnt (struct adf4157_dev *dev, int32_t r_cnt)
	Increases the R counter value until the PFD frequency is smaller than ADF4351_MAX_FREQ_PFD. More...
uint32_t	gcd (uint32_t x, uint32_t y)
	Computes the greatest common divider of two numbers. More...
double	adf4157_set_freq (struct adf4157_dev *dev, double freq)
	Sets the ADF4157 output frequency. More...

Detailed Description

Implementation of ADF4157 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

adf4157_init()

int8_t adf4157_init	(	struct adf4157_dev **	device,
		struct adf4157_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.

adf4157_remove()

int32_t adf4157_remove

(

struct adf4157_dev *

dev

)

Free the resources allocated by adf4157_init().

Parameters

dev	- The device structure.

Returns

0 in case of success, negative error code otherwise.

adf4157_set()

int8_t adf4157_set	(	struct adf4157_dev *	dev,
		uint32_t	value
	)

Transmits 32 bits on SPI.

Parameters

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

Returns

none.

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adf4157_set_freq()

double adf4157_set_freq	(	struct adf4157_dev *	dev,
		double	freq
	)

Sets the ADF4157 output frequency.

Parameters

dev	- The device structure.
freq	- The desired frequency value.

Returns

calculatedFrequency - The actual frequency value that was set.

adf4157_tune_r_cnt()

int32_t adf4157_tune_r_cnt	(	struct adf4157_dev *	dev,
		int32_t	r_cnt
	)

Increases the R counter value until the PFD frequency is smaller than ADF4351_MAX_FREQ_PFD.

Parameters

dev	- The device structure.
r_cnt	- Initial r_cnt value.

Returns

Final r_cnt value.

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gcd()

uint32_t gcd	(	uint32_t	x,
		uint32_t	y
	)

Computes the greatest common divider of two numbers.

Returns

Returns the gcd.