Implementation of AD738x Driver. More...

#include "stdio.h"
#include "stdlib.h"
#include "stdbool.h"
#include "spi_engine.h"
#include "ad738x.h"
#include "no_os_delay.h"
#include "no_os_error.h"
#include "no_os_alloc.h"
#include "no_os_pwm.h"

Include dependency graph for ad738x.c:

Functions
int32_t	ad738x_spi_reg_read (struct ad738x_dev dev, uint8_t reg_addr, uint16_t reg_data)

int32_t	ad738x_spi_reg_write (struct ad738x_dev *dev, uint8_t reg_addr, uint16_t reg_data)

int32_t	ad738x_spi_write_mask (struct ad738x_dev *dev, uint8_t reg_addr, uint32_t mask, uint16_t data)

int32_t	ad738x_set_conversion_mode (struct ad738x_dev *dev, enum ad738x_conv_mode mode)

int32_t	ad738x_reset (struct ad738x_dev *dev, enum ad738x_reset_type reset)

int32_t	ad738x_oversampling_config (struct ad738x_dev *dev, enum ad738x_os_mode os_mode, enum ad738x_os_ratio os_ratio, enum ad738x_resolution res)

int32_t	ad738x_power_down_mode (struct ad738x_dev *dev, enum ad738x_pwd_mode pmode)

int32_t	ad738x_reference_sel (struct ad738x_dev *dev, enum ad738x_ref_sel ref_sel)

int32_t	ad738x_spi_single_conversion (struct ad738x_dev dev, uint32_t adc_data)

int32_t	ad738x_read_data (struct ad738x_dev dev, uint32_t buf, uint16_t samples)
	Read from device. Enter register mode to read/write registers. More...

int32_t	ad738x_init (struct ad738x_dev *device, struct ad738x_init_param init_param)

int32_t	ad738x_remove (struct ad738x_dev *dev)
	Free the resources allocated by ad738x_init(). More...

Detailed Description

Implementation of AD738x Driver.

Author: SPopa (stefa.nosp@m.n.po.nosp@m.pa@an.nosp@m.alog.nosp@m..com); Antoniu Miclaus (anton.nosp@m.iu.m.nosp@m.iclau.nosp@m.s@an.nosp@m.alog..nosp@m.com)

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.

Function Documentation

◆ ad738x_init()

int32_t ad738x_init	(	struct ad738x_dev **	device,
		struct ad738x_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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◆ ad738x_oversampling_config()

int32_t ad738x_oversampling_config	(	struct ad738x_dev *	dev,
		enum ad738x_os_mode	os_mode,
		enum ad738x_os_ratio	os_ratio,
		enum ad738x_resolution	res
	)

Sets the oversampling mode in the device (os_mode) Sets the oversampling ratio (osr) Sets the size of the conversion result data (res)

Parameters

dev	- The device structure.
os_mode	- accepted values: NORMAL_OS_MODE ROLLING_OS_MODE
os_ratio	- accepted values: OSR_DISABLED OSR_X2 OSR_X4 OSR_X8 OSR_X16 OSR_X32
res	- accepted values: RES_16_BIT RES_18_BIT

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

◆ ad738x_power_down_mode()

int32_t ad738x_power_down_mode	(	struct ad738x_dev *	dev,
		enum ad738x_pwd_mode	pmode
	)

Device power down.

Parameters

dev	- The device structure.
pmode	- Type of power mode Accepted values: NORMAL_PWDM FULL_PWDM

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

◆ ad738x_read_data()

int32_t ad738x_read_data	(	struct ad738x_dev *	dev,
		uint32_t *	buf,
		uint16_t	samples
	)

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

Parameters

dev	- ad738x_dev device handler.
buf	- data buffer.
samples	- sample number.

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

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◆ ad738x_reference_sel()

int32_t ad738x_reference_sel	(	struct ad738x_dev *	dev,
		enum ad738x_ref_sel	ref_sel
	)

Enable internal or external reference

Parameters

dev	- The device structure.
ref_sel	- Type of reference Accepted values: INT_REF EXT_REF

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

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◆ ad738x_remove()

int32_t ad738x_remove ( struct ad738x_dev * dev )

Free the resources allocated by ad738x_init().

Parameters

dev	- The device structure.

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

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◆ ad738x_reset()

int32_t ad738x_reset	(	struct ad738x_dev *	dev,
		enum ad738x_reset_type	reset
	)

Device reset over SPI.

Parameters

dev	- The device structure.
reset	- Type of reset. Accepted values: SOFT_RESET HARD_RESET

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

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◆ ad738x_set_conversion_mode()

int32_t ad738x_set_conversion_mode	(	struct ad738x_dev *	dev,
		enum ad738x_conv_mode	mode
	)

Select if ADC A and ADC B output on both SDOA and SDOB lines (two wire mode) or only on on the SDOA line

Parameters

dev	- The device structure.
mode	- The conversion output mode. Accepted values: TWO_WIRE_MODE ONE_WIRE_MODE

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

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◆ ad738x_spi_reg_read()

int32_t ad738x_spi_reg_read	(	struct ad738x_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.

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◆ ad738x_spi_reg_write()

int32_t ad738x_spi_reg_write	(	struct ad738x_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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◆ ad738x_spi_single_conversion()

int32_t ad738x_spi_single_conversion	(	struct ad738x_dev *	dev,
		uint32_t *	adc_data
	)

Read conversion result from device.

Parameters

dev	- The device structure.
adc_data	- The conversion result data

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

◆ ad738x_spi_write_mask()

int32_t ad738x_spi_write_mask	(	struct ad738x_dev *	dev,
		uint8_t	reg_addr,
		uint32_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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Functions

Detailed Description

Function Documentation

◆ ad738x_init()

◆ ad738x_oversampling_config()

◆ ad738x_power_down_mode()

◆ ad738x_read_data()

◆ ad738x_reference_sel()

◆ ad738x_remove()

◆ ad738x_reset()

◆ ad738x_set_conversion_mode()

◆ ad738x_spi_reg_read()

◆ ad738x_spi_reg_write()

◆ ad738x_spi_single_conversion()

◆ ad738x_spi_write_mask()