AD717X implementation file. Devices: AD7172-2, AD7172-4, AD7173-8, AD7175-2, AD7175-8, AD7176-2 AD7177-2, AD4111, AD4112, AD4114, AD4115, AD4116. More...

#include <stdlib.h>
#include "ad717x.h"
#include "no_os_error.h"
#include "no_os_alloc.h"

Include dependency graph for ad717x.c:

Macros
#define	INVALID_VAL -1 /* Invalid argument */

#define	COMM_ERR -2 /* Communication error on receive */

#define	TIMEOUT -3 /* A timeout has occured */

Functions
int	ad717x_set_channel_status (ad717x_dev *device, uint8_t channel_id, bool channel_status)
	Set channel status - Enable/Disable. More...

int	ad717x_set_adc_mode (ad717x_dev *device, enum ad717x_mode adc_mode)
	Set ADC Mode. More...

int	ad717x_connect_analog_input (ad717x_dev *device, uint8_t channel_id, union ad717x_analog_inputs analog_input)
	Set Analog Inputs to channel. More...

int	ad717x_assign_setup (ad717x_dev *device, uint8_t channel_id, uint8_t setup)
	Assign Setup to Channel. More...

int	ad717x_set_polarity (ad717x_dev *device, bool bipolar, uint8_t setup_id)
	Set Polarity. More...

int	ad717x_set_reference_source (ad717x_dev *device, enum ad717x_reference_source ref_source, uint8_t setup_id)
	Select the reference source. More...

int	ad717x_enable_input_buffer (ad717x_dev *device, bool inbuf_en, bool refbuf_en, uint8_t setup_id)
	Enable Input Buffer. More...

int	ad717x_single_read (ad717x_dev device, uint8_t id, int32_t adc_raw_data)
	Perform Single Conversion. More...

ad717x_st_reg *	AD717X_GetReg (ad717x_dev *device, uint8_t reg_address)
	Searches through the list of registers of the driver instance and retrieves a pointer to the register that matches the given address. More...

int32_t	AD717X_ReadRegister (ad717x_dev *device, uint8_t addr)
	Reads the value of the specified register. More...

int32_t	AD717X_WriteRegister (ad717x_dev *device, uint8_t addr)
	Writes the value of the specified register. More...

int32_t	AD717X_Reset (ad717x_dev *device)
	Resets the device. More...

int32_t	AD717X_WaitForReady (ad717x_dev *device, uint32_t timeout)
	Waits until a new conversion result is available. More...

int32_t	AD717X_ReadData (ad717x_dev device, int32_t pData)
	Reads the conversion result from the device. More...

int32_t	AD717X_ComputeDataregSize (ad717x_dev *device)
	Computes data register read size to account for bit number and status read. More...

uint8_t	AD717X_ComputeCRC8 (uint8_t *pBuf, uint8_t bufSize)
	Computes the CRC checksum for a data buffer. More...

uint8_t	AD717X_ComputeXOR8 (uint8_t *pBuf, uint8_t bufSize)
	Computes the XOR checksum for a data buffer. More...

int32_t	AD717X_UpdateCRCSetting (ad717x_dev *device)
	Updates the CRC settings. More...

int32_t	ad717x_configure_device_odr (ad717x_dev *dev, uint8_t filtcon_id, uint8_t odr_sel)
	Configure ODR for the device. More...

int32_t	AD717X_Init (ad717x_dev **device, ad717x_init_param init_param)
	Initializes the AD717X. More...

int32_t	AD717X_remove (ad717x_dev *dev)
	Free the resources allocated by AD717X_Init(). More...

Detailed Description

AD717X implementation file. Devices: AD7172-2, AD7172-4, AD7173-8, AD7175-2, AD7175-8, AD7176-2 AD7177-2, AD4111, AD4112, AD4114, AD4115, AD4116.

Author: acozma (andre.nosp@m.i.co.nosp@m.zma@a.nosp@m.nalo.nosp@m.g.com) dnechita (dan.n.nosp@m.echi.nosp@m.ta@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.

Macro Definition Documentation

◆ COMM_ERR

#define COMM_ERR -2 /* Communication error on receive */

◆ INVALID_VAL

#define INVALID_VAL -1 /* Invalid argument */

◆ TIMEOUT

#define TIMEOUT -3 /* A timeout has occured */

Function Documentation

◆ ad717x_assign_setup()

int ad717x_assign_setup	(	ad717x_dev *	device,
		uint8_t	channel_id,
		uint8_t	setup
	)

Assign Setup to Channel.

Parameters

device	- AD717x Device Descriptor
channel_id	- Channel ID (number)
setup	- Setup ID (number)

Returns: Returns 0 for success or negative error code in case of failure.

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◆ AD717X_ComputeCRC8()

uint8_t AD717X_ComputeCRC8	(	uint8_t *	pBuf,
		uint8_t	bufSize
	)

Computes the CRC checksum for a data buffer.

Parameters

pBuf	- Data buffer
bufSize	- Data buffer size in bytes

Returns: Returns the computed CRC checksum.

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◆ AD717X_ComputeDataregSize()

int32_t AD717X_ComputeDataregSize ( ad717x_dev * device )

Computes data register read size to account for bit number and status read.

Parameters

device - The handler of the instance of the driver.

Returns: 0in case of success or negative code in case of failure.

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◆ AD717X_ComputeXOR8()

uint8_t AD717X_ComputeXOR8	(	uint8_t *	pBuf,
		uint8_t	bufSize
	)

Computes the XOR checksum for a data buffer.

Parameters

pBuf	- Data buffer
bufSize	- Data buffer size in bytes

Returns: Returns the computed XOR checksum.

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◆ ad717x_configure_device_odr()

int32_t ad717x_configure_device_odr	(	ad717x_dev *	dev,
		uint8_t	filtcon_id,
		uint8_t	odr_sel
	)

Configure ODR for the device.

Parameters

dev	- The AD717x Device descriptor
filtcon_id	- Filter Configuration Register ID (Number)
odr_sel	- ODR[4:0] bitfield value as a decimal

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

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◆ ad717x_connect_analog_input()

int ad717x_connect_analog_input	(	ad717x_dev *	device,
		uint8_t	channel_id,
		union ad717x_analog_inputs	analog_input
	)

Set Analog Inputs to channel.

Parameters

device	- AD717x Device Descriptor
channel_id	- Channel whose Analog input is to be configured
analog_input	- Analog Inputs to the Channel

Returns: Returns 0 for success or negative error code in case of failure.

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◆ ad717x_enable_input_buffer()

int ad717x_enable_input_buffer	(	ad717x_dev *	device,
		bool	inbuf_en,
		bool	refbuf_en,
		uint8_t	setup_id
	)

Enable Input Buffer.

Parameters

device	- AD717x Device Descriptor
inbuf_en	- Enable Inpur Buffer
refbuf_en	- Enable referece Buffer
setup_id	- Setup ID (Number)

Returns: Returns 0 for success or negative error code in case of failure.

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◆ AD717X_GetReg()

ad717x_st_reg* AD717X_GetReg	(	ad717x_dev *	device,
		uint8_t	reg_address
	)

Searches through the list of registers of the driver instance and retrieves a pointer to the register that matches the given address.

Parameters

device	- The handler of the instance of the driver.
reg_address	- The address to be used to find the register.

Returns: A pointer to the register if found or 0.

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◆ AD717X_Init()

int32_t AD717X_Init	(	ad717x_dev **	device,
		ad717x_init_param	init_param
	)

Initializes the AD717X.

Parameters

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

Returns: Returns 0 for success or negative error code.

◆ AD717X_ReadData()

int32_t AD717X_ReadData	(	ad717x_dev *	device,
		int32_t *	pData
	)

Reads the conversion result from the device.

Parameters

device	- The handler of the instance of the driver.
pData	- Pointer to store the read data.

Returns: Returns 0 for success or negative error code.

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◆ AD717X_ReadRegister()

int32_t AD717X_ReadRegister	(	ad717x_dev *	device,
		uint8_t	addr
	)

Reads the value of the specified register.

Parameters

device	- The handler of the instance of the driver.
addr	- The address of the register to be read. The value will be stored inside the register structure that holds info about this register.

Returns: Returns 0 for success or negative error code.

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◆ AD717X_remove()

int32_t AD717X_remove ( ad717x_dev * dev )

Free the resources allocated by AD717X_Init().

Parameters

dev	- The device structure.

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

◆ AD717X_Reset()

int32_t AD717X_Reset ( ad717x_dev * device )

Resets the device.

Parameters

device - The handler of the instance of the driver.

Returns: Returns 0 for success or negative error code.

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◆ ad717x_set_adc_mode()

int ad717x_set_adc_mode	(	ad717x_dev *	device,
		enum ad717x_mode	adc_mode
	)

Set ADC Mode.

Parameters

device	- AD717x Device Descriptor
adc_mode	- ADC Mode to be configured

Returns: Returns 0 for success or negative error code in case of failure.

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◆ ad717x_set_channel_status()

int ad717x_set_channel_status	(	ad717x_dev *	device,
		uint8_t	channel_id,
		bool	channel_status
	)

Set channel status - Enable/Disable.

Parameters

device	- AD717x Device descriptor.
channel_id	- Channel ID (number) of the channel whose status is to be set.
channel_status	- Required status of the channel-True in case of Enable and False in case of Disable

Returns: Returns 0 for success or negative error code in case of failure.

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◆ ad717x_set_polarity()

int ad717x_set_polarity	(	ad717x_dev *	device,
		bool	bipolar,
		uint8_t	setup_id
	)

Set Polarity.

Parameters

device	- AD717x Device Descriptor
bipolar	- Polarity Select:True in case of Bipolar, False in case of Unipolar
setup_id	- Setup ID (number)

Returns: Returns 0 for success or negative error code in case of failure.

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◆ ad717x_set_reference_source()

int ad717x_set_reference_source	(	ad717x_dev *	device,
		enum ad717x_reference_source	ref_source,
		uint8_t	setup_id
	)

Select the reference source.

Parameters

device	- AD717x Device Descriptor
ref_source	- Reference source
setup_id	- Setup ID (Number)

Returns: Returns 0 for success or negative error code in case of failure.

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◆ ad717x_single_read()

int ad717x_single_read	(	ad717x_dev *	device,
		uint8_t	id,
		int32_t *	adc_raw_data
	)

Perform Single Conversion.

Parameters

device	- AD717x Device Descriptor
id	- Channel ID (number) requested
adc_raw_data	ADC Raw Value

Returns: Returns 0 for success or negative error code in case of failure.

◆ AD717X_UpdateCRCSetting()

int32_t AD717X_UpdateCRCSetting ( ad717x_dev * device )

Updates the CRC settings.

Parameters

device - The handler of the instance of the driver.

Returns: Returns 0 for success or negative error code.

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◆ AD717X_WaitForReady()

int32_t AD717X_WaitForReady	(	ad717x_dev *	device,
		uint32_t	timeout
	)

Waits until a new conversion result is available.

Parameters

device	- The handler of the instance of the driver.
timeout	- Count representing the number of polls to be done until the function returns if no new data is available.

Returns: Returns 0 for success or negative error code.

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◆ AD717X_WriteRegister()

int32_t AD717X_WriteRegister	(	ad717x_dev *	device,
		uint8_t	addr
	)

Writes the value of the specified register.

Parameters

device	- The handler of the instance of the driver.
addr	- The address of the register to be written with the value stored inside the register structure that holds info about this register.

Returns: Returns 0 for success or negative error code.

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Macros

Functions

Detailed Description

Macro Definition Documentation

◆ COMM_ERR

◆ INVALID_VAL

◆ TIMEOUT

Function Documentation

◆ ad717x_assign_setup()

◆ AD717X_ComputeCRC8()

◆ AD717X_ComputeDataregSize()

◆ AD717X_ComputeXOR8()

◆ ad717x_configure_device_odr()

◆ ad717x_connect_analog_input()

◆ ad717x_enable_input_buffer()

◆ AD717X_GetReg()

◆ AD717X_Init()

◆ AD717X_ReadData()

◆ AD717X_ReadRegister()

◆ AD717X_remove()

◆ AD717X_Reset()

◆ ad717x_set_adc_mode()

◆ ad717x_set_channel_status()

◆ ad717x_set_polarity()

◆ ad717x_set_reference_source()

◆ ad717x_single_read()

◆ AD717X_UpdateCRCSetting()

◆ AD717X_WaitForReady()

◆ AD717X_WriteRegister()