Implementation of AD7616 Driver. More...

#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdio.h>
#include "ad7616.h"
#include "no_os_gpio.h"
#include "no_os_error.h"
#include "no_os_delay.h"
#include "no_os_alloc.h"
#include "no_os_util.h"
#include "no_os_spi.h"

Include dependency graph for ad7616.c:

Macros
#define	AD7616_GET_BIT(v, b) ((v >> b) & 1)

#define	AD7616_TOGGLE_TIMEOUT_DELAY (8192 * 1024)

#define	SPI_ENGINE_WORDS_PER_READ 1

Functions
int32_t	ad7616_select_channel_source (struct ad7616_dev *dev, enum ad7616_ch ch)
	Select a new source for a channel. More...

int32_t	ad7616_read_channel_source (struct ad7616_dev dev, enum ad7616_ch ch_a, enum ad7616_ch *ch_b)
	Read the current selected channels. More...

int32_t	ad7616_read (struct ad7616_dev dev, uint8_t reg_addr, uint16_t reg_data)

int32_t	ad7616_write (struct ad7616_dev *dev, uint8_t reg_addr, uint16_t reg_data)

int32_t	ad7616_read_mask (struct ad7616_dev dev, uint8_t reg_addr, uint16_t mask, uint16_t data)

int32_t	ad7616_write_mask (struct ad7616_dev *dev, uint8_t reg_addr, uint16_t mask, uint16_t data)

int32_t	ad7616_spi_read (struct ad7616_dev dev, uint8_t reg_addr, uint16_t reg_data)

int32_t	ad7616_spi_write (struct ad7616_dev *dev, uint8_t reg_addr, uint16_t reg_data)

int32_t	ad7616_reset (struct ad7616_dev *dev)

int32_t	ad7616_set_range (struct ad7616_dev *dev, enum ad7616_ch ch, enum ad7616_range range)

int32_t	ad7616_set_mode (struct ad7616_dev *dev, enum ad7616_mode mode)

int32_t	ad7616_set_oversampling_ratio (struct ad7616_dev *dev, enum ad7616_osr osr)

int32_t	ad7616_read_data_serial (struct ad7616_dev dev, struct ad7616_conversion_result results, uint32_t samples)
	Read conversion result from device, checking with CRC if enabled. More...

int32_t	ad7616_par_read (struct ad7616_dev dev, uint8_t reg_addr, uint16_t reg_data)

int32_t	ad7616_par_write (struct ad7616_dev *dev, uint8_t reg_addr, uint16_t reg_data)

int32_t	ad7616_read_data_parallel (struct ad7616_dev dev, uint32_t buf, uint32_t samples)
	Read from device in parallel mode. Enter register mode to read/write registers. More...

int32_t	ad7616_setup_sequencer (struct ad7616_dev dev, struct ad7616_sequencer_layer layers, uint32_t layers_nb, uint8_t burst)
	Setup the sequencer layers. More...

int32_t	ad7616_disable_sequencer (struct ad7616_dev *dev)

int32_t	ad7616_self_test (struct ad7616_dev *dev)
	Perform a self test. Channels selection will be left untouched. More...

int32_t	ad7616_setup (struct ad7616_dev *device, struct ad7616_init_param init_param)

void	ad7616_remove (struct ad7616_dev *dev)

Detailed Description

Implementation of AD7616 Driver.

Author: DBogdan (drago.nosp@m.s.bo.nosp@m.gdan@.nosp@m.anal.nosp@m.og.co.nosp@m.m); Antoniu Miclaus (anton.nosp@m.iu.m.nosp@m.iclau.nosp@m.s@an.nosp@m.alog..nosp@m.com); Esteban Blanc (eblan.nosp@m.c@ba.nosp@m.ylibr.nosp@m.e.co.nosp@m.m)

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.

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.

Macro Definition Documentation

◆ AD7616_GET_BIT

#define AD7616_GET_BIT	(	v,
		b
	)	((v >> b) & 1)

◆ AD7616_TOGGLE_TIMEOUT_DELAY

#define AD7616_TOGGLE_TIMEOUT_DELAY (8192 * 1024)

◆ SPI_ENGINE_WORDS_PER_READ

#define SPI_ENGINE_WORDS_PER_READ 1

Function Documentation

◆ ad7616_disable_sequencer()

int32_t ad7616_disable_sequencer ( struct ad7616_dev * dev )

◆ ad7616_par_read()

int32_t ad7616_par_read	(	struct ad7616_dev *	dev,
		uint8_t	reg_addr,
		uint16_t *	reg_data
	)

PAR read from device.

Parameters

dev	- The device structure.
reg_addr	- The register address.
reg_data	- The register data.

Returns: 0 in case of success, negative error code otherwise.

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◆ ad7616_par_write()

int32_t ad7616_par_write	(	struct ad7616_dev *	dev,
		uint8_t	reg_addr,
		uint16_t	reg_data
	)

PAR write to device.

Parameters

dev	- The device structure.
reg_addr	- The register address.
reg_data	- The register data.

Returns: 0 in case of success, negative error code otherwise.

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◆ ad7616_read()

int32_t ad7616_read	(	struct ad7616_dev *	dev,
		uint8_t	reg_addr,
		uint16_t *	reg_data
	)

Read from device.

Parameters

dev	- The device structure.
reg_addr	- The register address.
reg_data	- The register data.

Returns: 0 in case of success, negative error code otherwise.

◆ ad7616_read_channel_source()

int32_t ad7616_read_channel_source	(	struct ad7616_dev *	dev,
		enum ad7616_ch *	ch_a,
		enum ad7616_ch *	ch_b
	)

Read the current selected channels.

Parameters

dev	- The device structure
ch_a	- Pointer to store the current source for channel A
ch_b	- Pointer to store the current source for channel B

Returns: 0 on success, an error code otherwise

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◆ ad7616_read_data_parallel()

int32_t ad7616_read_data_parallel	(	struct ad7616_dev *	dev,
		uint32_t *	buf,
		uint32_t	samples
	)

Read from device in parallel mode. Enter register mode to read/write registers.

Parameters

dev	- ad7616_dev device handler.
buf	- data buffer.
samples	- sample number.

Returns: 0 in case of success, -1 otherwise.

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◆ ad7616_read_data_serial()

int32_t ad7616_read_data_serial	(	struct ad7616_dev *	dev,
		struct ad7616_conversion_result *	results,
		uint32_t	samples
	)

Read conversion result from device, checking with CRC if enabled.

Parameters

dev	- ad7616_dev device handler.
results	- results buffer.
samples	- sample number.

Returns: 0 in case of success, -1 otherwise.

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◆ ad7616_read_mask()

int32_t ad7616_read_mask	(	struct ad7616_dev *	dev,
		uint8_t	reg_addr,
		uint16_t	mask,
		uint16_t *	data
	)

Read from device using a mask.

Parameters

dev	- The device structure.
reg_addr	- The register address.
mask	- The mask.
data	- The register data.

Returns: 0 in case of success, negative error code otherwise.

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◆ ad7616_remove()

void ad7616_remove ( struct ad7616_dev * dev )

◆ ad7616_reset()

int32_t ad7616_reset ( struct ad7616_dev * dev )

Perform a full reset of the device.

Parameters

dev	- The device structure.

Returns: 0 in case of success, negative error code otherwise.

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◆ ad7616_select_channel_source()

int32_t ad7616_select_channel_source	(	struct ad7616_dev *	dev,
		enum ad7616_ch	ch
	)

Select a new source for a channel.

Parameters

dev	- The device structure.
ch	- The new channel source

Returns: 0 on success, an error code otherwise

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◆ ad7616_self_test()

int32_t ad7616_self_test ( struct ad7616_dev * dev )

Perform a self test. Channels selection will be left untouched.

Self test

Parameters

dev	The device structure

Returns: 0 in case of success, negative error code otherwise

◆ ad7616_set_mode()

int32_t ad7616_set_mode	(	struct ad7616_dev *	dev,
		enum ad7616_mode	mode
	)

Set the operation mode (software or hardware).

Parameters

dev	- The device structure.
mode	- The operation mode. Accepted values: AD7616_SW AD7616_HW

Returns: 0 in case of success, negative error code otherwise.

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◆ ad7616_set_oversampling_ratio()

int32_t ad7616_set_oversampling_ratio	(	struct ad7616_dev *	dev,
		enum ad7616_osr	osr
	)

Set the oversampling ratio.

Parameters

dev	- The device structure.
osr	- The oversampling ratio. Accepted values: AD7616_OSR_0 AD7616_OSR_2 AD7616_OSR_4 AD7616_OSR_8 AD7616_OSR_16 AD7616_OSR_32 AD7616_OSR_64 AD7616_OSR_128

Returns: 0 in case of success, negative error code otherwise.

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◆ ad7616_set_range()

int32_t ad7616_set_range	(	struct ad7616_dev *	dev,
		enum ad7616_ch	ch,
		enum ad7616_range	range
	)

Set the analog input range for the selected analog input channel.

Parameters

dev	- The device structure.
ch	- The channel number. Accepted values: AD7616_VA0 AD7616_VA1 AD7616_VA2 AD7616_VA3 AD7616_VA4 AD7616_VA5 AD7616_VA6 AD7616_VA7 AD7616_VB0 AD7616_VB1 AD7616_VB2 AD7616_VB3 AD7616_VB4 AD7616_VB5 AD7616_VB6 AD7616_VB7
range	- The analog input range. Accepted values: AD7616_2V5 AD7616_5V AD7616_10V

Returns: 0 in case of success, negative error code otherwise.

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◆ ad7616_setup()

int32_t ad7616_setup	(	struct ad7616_dev **	device,
		struct ad7616_init_param *	init_param
	)

Initialize the device.

Parameters

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

Returns: 0 in case of success, negative error code otherwise.

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◆ ad7616_setup_sequencer()

int32_t ad7616_setup_sequencer	(	struct ad7616_dev *	dev,
		struct ad7616_sequencer_layer *	layers,
		uint32_t	layers_nb,
		uint8_t	burst
	)

Setup the sequencer layers.

Parameters

dev	The device structure
layers	Arrays of layers
layers_nb	Nubers of items in the layers array.
burst	1 if needed, 0 otherwise

Returns: 0 on success, an error value otherwise

◆ ad7616_spi_read()

int32_t ad7616_spi_read	(	struct ad7616_dev *	dev,
		uint8_t	reg_addr,
		uint16_t *	reg_data
	)

SPI read from device.

Parameters

dev	- The device structure.
reg_addr	- The register address.
reg_data	- The register data.

Returns: 0 in case of success, negative error code otherwise.

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◆ ad7616_spi_write()

int32_t ad7616_spi_write	(	struct ad7616_dev *	dev,
		uint8_t	reg_addr,
		uint16_t	reg_data
	)

SPI write to device.

Parameters

dev	- The device structure.
reg_addr	- The register address.
reg_data	- The register data.

Returns: 0 in case of success, negative error code otherwise.

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◆ ad7616_write()

int32_t ad7616_write	(	struct ad7616_dev *	dev,
		uint8_t	reg_addr,
		uint16_t	reg_data
	)

Write to device.

Parameters

dev	- The device structure.
reg_addr	- The register address.
reg_data	- The register data.

Returns: 0 in case of success, negative error code otherwise.

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◆ ad7616_write_mask()

int32_t ad7616_write_mask	(	struct ad7616_dev *	dev,
		uint8_t	reg_addr,
		uint16_t	mask,
		uint16_t	data
	)

SPI write to device using a mask.

Parameters

dev	- The device structure.
reg_addr	- The register address.
mask	- The mask.
data	- The register data.

Returns: 0 in case of success, negative error code otherwise.

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Macros

Functions

Detailed Description

Macro Definition Documentation

◆ AD7616_GET_BIT

◆ AD7616_TOGGLE_TIMEOUT_DELAY

◆ SPI_ENGINE_WORDS_PER_READ

Function Documentation

◆ ad7616_disable_sequencer()

◆ ad7616_par_read()

◆ ad7616_par_write()

◆ ad7616_read()

◆ ad7616_read_channel_source()

◆ ad7616_read_data_parallel()

◆ ad7616_read_data_serial()

◆ ad7616_read_mask()

◆ ad7616_remove()

◆ ad7616_reset()

◆ ad7616_select_channel_source()

◆ ad7616_self_test()

◆ ad7616_set_mode()

◆ ad7616_set_oversampling_ratio()

◆ ad7616_set_range()

◆ ad7616_setup()

◆ ad7616_setup_sequencer()

◆ ad7616_spi_read()

◆ ad7616_spi_write()

◆ ad7616_write()

◆ ad7616_write_mask()