Implementation of AD7768-1 Driver. More...

#include "stdio.h"
#include "stdlib.h"
#include "stdbool.h"
#include <string.h>
#include "ad77681.h"
#include "no_os_error.h"
#include "no_os_delay.h"
#include "no_os_alloc.h"

Include dependency graph for ad77681.c:

Functions
uint8_t	ad77681_compute_crc8 (uint8_t *data, uint8_t data_size, uint8_t init_val)

uint8_t	ad77681_compute_xor (uint8_t *data, uint8_t data_size, uint8_t init_val)

int32_t	ad77681_spi_reg_read (struct ad77681_dev dev, uint8_t reg_addr, uint8_t reg_data)

int32_t	ad77681_spi_reg_write (struct ad77681_dev *dev, uint8_t reg_addr, uint8_t reg_data)

int32_t	ad77681_spi_read_mask (struct ad77681_dev dev, uint8_t reg_addr, uint8_t mask, uint8_t data)

int32_t	ad77681_spi_write_mask (struct ad77681_dev *dev, uint8_t reg_addr, uint8_t mask, uint8_t data)

uint8_t	ad77681_get_rx_buf_len (struct ad77681_dev *dev)

uint8_t	ad77681_get_frame_byte (struct ad77681_dev *dev)

int32_t	ad77681_spi_read_adc_data (struct ad77681_dev dev, uint8_t adc_data, enum ad77681_data_read_mode mode)

int32_t	ad77681_CRC_status_handling (struct ad77681_dev dev, uint16_t data_buffer)

int32_t	ad77681_data_to_voltage (struct ad77681_dev dev, uint32_t raw_code, double *voltage)

int32_t	ad77681_update_sample_rate (struct ad77681_dev *dev)

int32_t	ad77681_SINC3_ODR (struct ad77681_dev dev, uint16_t sinc3_dec_reg, float sinc3_odr)

int32_t	ad77681_set_power_mode (struct ad77681_dev *dev, enum ad77681_power_mode mode)

int32_t	ad77681_set_mclk_div (struct ad77681_dev *dev, enum ad77681_mclk_div clk_div)

int32_t	ad77681_set_VCM_output (struct ad77681_dev *dev, enum ad77681_VCM_out VCM_out)

int32_t	ad77681_set_AINn_buffer (struct ad77681_dev *dev, enum ad77681_AINn_precharge AINn)

int32_t	ad77681_set_AINp_buffer (struct ad77681_dev *dev, enum ad77681_AINp_precharge AINp)

int32_t	ad77681_set_REFn_buffer (struct ad77681_dev *dev, enum ad77681_REFn_buffer REFn)

int32_t	ad77681_set_REFp_buffer (struct ad77681_dev *dev, enum ad77681_REFp_buffer REFp)

int32_t	ad77681_set_filter_type (struct ad77681_dev *dev, enum ad77681_sinc5_fir_decimate decimate, enum ad77681_filter_type filter, uint16_t sinc3_osr)

int32_t	ad77681_set_50HZ_rejection (struct ad77681_dev *dev, uint8_t enable)

int32_t	ad77681_set_continuos_read (struct ad77681_dev *dev, enum ad77681_continuous_read continuous_enable)

int32_t	ad77681_power_down (struct ad77681_dev *dev, enum ad77681_sleep_wake sleep_wake)

int32_t	ad77681_set_conv_mode (struct ad77681_dev *dev, enum ad77681_conv_mode conv_mode, enum ad77681_conv_diag_mux diag_mux_sel, bool conv_diag_sel)

int32_t	ad77681_set_convlen (struct ad77681_dev *dev, enum ad77681_conv_len conv_len)

int32_t	ad77681_set_crc_sel (struct ad77681_dev *dev, enum ad77681_crc_sel crc_sel)

int32_t	ad77681_set_status_bit (struct ad77681_dev *dev, bool status_bit)

int32_t	ad77681_soft_reset (struct ad77681_dev *dev)

int32_t	ad77681_initiate_sync (struct ad77681_dev *dev)

int32_t	ad77681_apply_offset (struct ad77681_dev *dev, uint32_t value)

int32_t	ad77681_apply_gain (struct ad77681_dev *dev, uint32_t value)

int32_t	ad77681_programmable_filter (struct ad77681_dev dev, const float coeffs, uint8_t num_coeffs)

int32_t	ad77681_gpio_read (struct ad77681_dev dev, uint8_t value, enum ad77681_gpios gpio_number)

int32_t	ad77681_gpio_write (struct ad77681_dev *dev, uint8_t value, enum ad77681_gpios gpio_number)

int32_t	ad77681_gpio_inout (struct ad77681_dev *dev, uint8_t direction, enum ad77681_gpios gpio_number)

int32_t	ad77681_global_gpio (struct ad77681_dev *dev, enum ad77681_gobal_gpio_enable gpio_enable)

int32_t	ad77681_scratchpad (struct ad77681_dev dev, uint8_t sequence)

int32_t	ad77681_gpio_open_drain (struct ad77681_dev *dev, enum ad77681_gpios gpio_number, enum ad77681_gpio_output_type output_type)

int32_t	ad77681_clear_error_flags (struct ad77681_dev *dev)

int32_t	ad77681_error_flags_enabe (struct ad77681_dev *dev)

int32_t	ad77681_status (struct ad77681_dev dev, struct ad77681_status_registers status)

int32_t	ad77681_setup (struct ad77681_dev device, struct ad77681_init_param init_param, struct ad77681_status_registers status)

Detailed Description

Implementation of AD7768-1 Driver.

Author: SPopa (stefa.nosp@m.n.po.nosp@m.pa@an.nosp@m.alog.nosp@m..com)

SPDX-License-Identifier: BSD-3-Clause

Function Documentation

◆ ad77681_apply_gain()

int32_t ad77681_apply_gain	(	struct ad77681_dev *	dev,
		uint32_t	value )

Write to gain registers

Parameters

dev	- The device structure.
value	- The desired value of the whole 24-bit gain register

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

◆ ad77681_apply_offset()

int32_t ad77681_apply_offset	(	struct ad77681_dev *	dev,
		uint32_t	value )

Write to offset registers

Parameters

dev	The device structure.
value	The desired value of the whole 24-bit offset register

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

◆ ad77681_clear_error_flags()

int32_t ad77681_clear_error_flags ( struct ad77681_dev * dev )

Clear all error flags at once

Parameters

dev	- The device structure.

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

◆ ad77681_compute_crc8()

uint8_t ad77681_compute_crc8	(	uint8_t *	data,
		uint8_t	data_size,
		uint8_t	init_val )

Compute CRC8 checksum.

Parameters

data	- The data buffer.
data_size	- The size of the data buffer.
init_val	- CRC initial value.

Returns: CRC8 checksum.

◆ ad77681_compute_xor()

uint8_t ad77681_compute_xor	(	uint8_t *	data,
		uint8_t	data_size,
		uint8_t	init_val )

Compute XOR checksum.

Parameters

data	- The data buffer.
data_size	- The size of the data buffer.
init_val	- CRC initial value.

Returns: XOR checksum.

◆ ad77681_CRC_status_handling()

int32_t ad77681_CRC_status_handling	(	struct ad77681_dev *	dev,
		uint16_t *	data_buffer )

CRC and status bit handling after each readout form the ADC

Parameters

dev	- The device structure.
*data_buffer	- 16-bit buffer readed from the ADC containing the CRC, data and the stattus bit.

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

◆ ad77681_data_to_voltage()

int32_t ad77681_data_to_voltage	(	struct ad77681_dev *	dev,
		uint32_t *	raw_code,
		double *	voltage )

Conversion from measured data to voltage

Parameters

dev	- The device structure.
raw_code	- ADC raw code measurements
voltage	- Converted ADC code to voltage

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

◆ ad77681_error_flags_enabe()

int32_t ad77681_error_flags_enabe ( struct ad77681_dev * dev )

Enabling error flags. All error flags enabled by default

Parameters

dev	- The device structure.

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

◆ ad77681_get_frame_byte()

uint8_t ad77681_get_frame_byte ( struct ad77681_dev * dev )

Helper function to get the number of SPI 16bit frames for INTERRUPT ADC DATA READ

Parameters

dev	- The device structure.

Returns: frame_16bit - the number of 16 bit SPI frames

◆ ad77681_get_rx_buf_len()

uint8_t ad77681_get_rx_buf_len ( struct ad77681_dev * dev )

Helper function to get the number of rx bytes

Parameters

dev	- The device structure.

Returns: rx_buf_len - the number of rx bytes

◆ ad77681_global_gpio()

int32_t ad77681_global_gpio	(	struct ad77681_dev *	dev,
		enum ad77681_gobal_gpio_enable	gpio_enable )

Enable global GPIO bit. This bit must be set high to change GPIO settings.

Parameters

dev	- The device structure.
gpio_enable	- Enable or diable the global GPIO pin Accepted values: AD77681_GLOBAL_GPIO_ENABLE AD77681_GLOBAL_GPIO_DISABLE

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

◆ ad77681_gpio_inout()

int32_t ad77681_gpio_inout	(	struct ad77681_dev *	dev,
		uint8_t	direction,
		enum ad77681_gpios	gpio_number )

Set AD7768-1s GPIO as input or output.

Parameters

dev	- The device structure.
direction	- Direction of the GPIO Accepted values: NO_OS_GPIO_IN NO_OS_GPIO_OUT 4-bit value for all gpios
gpio_number	- Number of GPIO, which will be affected Accepted values: AD77681_GPIO0 AD77681_GPIO1 AD77681_GPIO2 AD77681_GPIO3 AD77681_ALL_GPIOS

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

◆ ad77681_gpio_open_drain()

int32_t ad77681_gpio_open_drain	(	struct ad77681_dev *	dev,
		enum ad77681_gpios	gpio_number,
		enum ad77681_gpio_output_type	output_type )

Set AD7768-1s GPIO output type between strong driver and open drain. GPIO3 can not be accessed!

Parameters

dev	- The device structure.
gpio_number	- AD7768-1s GPIO to be affected (Only GPIO0, GPIO1 and GPIO2) Accepted values: AD77681_GPIO0 AD77681_GPIO1 AD77681_GPIO2 AD77681_ALL_GPIOS
output_type	- Output type of the GPIO Accepted values: AD77681_GPIO_STRONG_DRIVER AD77681_GPIO_OPEN_DRAIN

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

◆ ad77681_gpio_read()

int32_t ad77681_gpio_read	(	struct ad77681_dev *	dev,
		uint8_t *	value,
		enum ad77681_gpios	gpio_number )

Read value from GPIOs present in AD7768-1 separately, or all GPIOS at once.

Parameters

dev	- The device structure.
value	- Readed value.
gpio_number	- Number of GPIO, the value will be written into Accepted values: AD77681_GPIO0 AD77681_GPIO1 AD77681_GPIO2 AD77681_GPIO3 AD77681_ALL_GPIOS

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

◆ ad77681_gpio_write()

int32_t ad77681_gpio_write	(	struct ad77681_dev *	dev,
		uint8_t	value,
		enum ad77681_gpios	gpio_number )

Write value to GPIOs present in AD7768-1 separately, or all GPIOS at once.

Parameters

dev	- The device structure.
value	- Value to be written into GPIO Accepted values: NO_OS_GPIO_HIGH NO_OS_GPIO_LOW 4-bit value for all gpios
gpio_number	- Number of GPIO, the value will be written into Accepted values: AD77681_GPIO0 AD77681_GPIO1 AD77681_GPIO2 AD77681_GPIO3 AD77681_ALL_GPIOS

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

◆ ad77681_initiate_sync()

int32_t ad77681_initiate_sync ( struct ad77681_dev * dev )

Initiate a SYNC_OUT pulse over spi

Parameters

dev	- The device structure.

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

◆ ad77681_power_down()

int32_t ad77681_power_down	(	struct ad77681_dev *	dev,
		enum ad77681_sleep_wake	sleep_wake )

Power down / power up the device

Parameters

dev	- The device structure.
sleep_wake	- Power down, or power up the ADC Accepted values: AD77681_SLEEP AD77681_WAKE

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

◆ ad77681_programmable_filter()

int32_t ad77681_programmable_filter	(	struct ad77681_dev *	dev,
		const float *	coeffs,
		uint8_t	num_coeffs )

Upload sequence for Programmamble FIR filter

Parameters

dev	- The device structure.
coeffs	- Pointer to the desired filter coefficients array to be written
num_coeffs	- Count of active filter coeffs

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

◆ ad77681_scratchpad()

int32_t ad77681_scratchpad	(	struct ad77681_dev *	dev,
		uint8_t *	sequence )

Read and write from ADC scratchpad register to check SPI Communication in the very beginning, during inicialization.

Parameters

dev	- The device structure.
sequence	- The sequence which will be written into scratchpad and the readed sequence will be returned

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

◆ ad77681_set_50HZ_rejection()

int32_t ad77681_set_50HZ_rejection	(	struct ad77681_dev *	dev,
		uint8_t	enable )

Enable 50/60 Hz rejection

Parameters

dev	- The device structure.
enable	- The positive reference buffer selector Accepted values: true false

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

◆ ad77681_set_AINn_buffer()

int32_t ad77681_set_AINn_buffer	(	struct ad77681_dev *	dev,
		enum ad77681_AINn_precharge	AINn )

Set the AIN- precharge buffer.

Parameters

dev	- The device structure.
AINn	- The negative analog input precharge buffer selector Accepted values: AD77681_AINn_ENABLED AD77681_AINn_DISABLED

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

◆ ad77681_set_AINp_buffer()

int32_t ad77681_set_AINp_buffer	(	struct ad77681_dev *	dev,
		enum ad77681_AINp_precharge	AINp )

Set the AIN+ precharge buffer.

Parameters

dev	- The device structure.
AINp	- The positive analog input precharge buffer selector Accepted values: AD77681_AINp_ENABLED AD77681_AINp_DISABLED

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

◆ ad77681_set_continuos_read()

int32_t ad77681_set_continuos_read	(	struct ad77681_dev *	dev,
		enum ad77681_continuous_read	continuous_enable )

Set the REF- reference buffer

Parameters

dev	- The device structure.
continuous_enable	- Continous read enable Accepted values: AD77681_CONTINUOUS_READ_ENABLE AD77681_CONTINUOUS_READ_DISABLE

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

◆ ad77681_set_conv_mode()

int32_t ad77681_set_conv_mode	(	struct ad77681_dev *	dev,
		enum ad77681_conv_mode	conv_mode,
		enum ad77681_conv_diag_mux	diag_mux_sel,
		bool	conv_diag_sel )

Conversion mode and source select

Parameters

dev	- The device structure.
conv_mode	- Sets the conversion mode of the ADC Accepted values: AD77681_CONV_CONTINUOUS AD77681_CONV_ONE_SHOT AD77681_CONV_SINGLE AD77681_CONV_PERIODIC
diag_mux_sel	- Selects which signal to route through diagnostic mux Accepted values: AD77681_TEMP_SENSOR AD77681_AIN_SHORT AD77681_POSITIVE_FS AD77681_NEGATIVE_FS
conv_diag_sel	- Select the input for conversion as AIN or diagnostic mux Accepted values: true false

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

◆ ad77681_set_convlen()

int32_t ad77681_set_convlen	(	struct ad77681_dev *	dev,
		enum ad77681_conv_len	conv_len )

Set the Conversion Result Output Length.

Parameters

dev	- The device structure.
conv_len	- The MCLK divider. Accepted values: AD77681_CONV_24BIT AD77681_CONV_16BIT

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

◆ ad77681_set_crc_sel()

int32_t ad77681_set_crc_sel	(	struct ad77681_dev *	dev,
		enum ad77681_crc_sel	crc_sel )

Activates CRC on all SPI transactions and Selects CRC method as XOR or 8-bit polynomial

Parameters

dev	- The device structure.
crc_sel	- The CRC type. Accepted values: AD77681_CRC AD77681_XOR AD77681_NO_CRC

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

◆ ad77681_set_filter_type()

int32_t ad77681_set_filter_type	(	struct ad77681_dev *	dev,
		enum ad77681_sinc5_fir_decimate	decimate,
		enum ad77681_filter_type	filter,
		uint16_t	sinc3_osr )

Set filter type and decimation ratio

Parameters

dev	- The device structure.
decimate	- Decimation ratio of filter Accepted values: AD77681_SINC5_FIR_DECx32 AD77681_SINC5_FIR_DECx64 AD77681_SINC5_FIR_DECx128 AD77681_SINC5_FIR_DECx256 AD77681_SINC5_FIR_DECx512 AD77681_SINC5_FIR_DECx1024
filter	- Select filter type Accepted values: AD77681_SINC5 AD77681_SINC5_DECx8 AD77681_SINC5_DECx16 AD77681_SINC3 AD77681_FIR
sinc3_osr	- Select decimation ratio for SINC3 filter separately as integer from 0 to 8192. See the AD7768-1 datasheet for more info

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

◆ ad77681_set_mclk_div()

int32_t ad77681_set_mclk_div	(	struct ad77681_dev *	dev,
		enum ad77681_mclk_div	clk_div )

Set the MCLK divider.

Parameters

dev	- The device structure.
clk_div	- The MCLK divider. Accepted values: AD77681_MCLK_DIV_16 AD77681_MCLK_DIV_8 AD77681_MCLK_DIV_4 AD77681_MCLK_DIV_2

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

◆ ad77681_set_power_mode()

int32_t ad77681_set_power_mode	(	struct ad77681_dev *	dev,
		enum ad77681_power_mode	mode )

Set the power consumption mode of the ADC core.

Parameters

dev	- The device structure.
mode	- The power mode. Accepted values: AD77681_ECO AD77681_MEDIAN AD77681_FAST

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

◆ ad77681_set_REFn_buffer()

int32_t ad77681_set_REFn_buffer	(	struct ad77681_dev *	dev,
		enum ad77681_REFn_buffer	REFn )

Set the REF- reference buffer

Parameters

dev	- The device structure.
REFn	- The negative reference buffer selector Accepted values: AD77681_BUFn_DISABLED AD77681_BUFn_ENABLED AD77681_BUFn_FULL_BUFFER_ON

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

◆ ad77681_set_REFp_buffer()

int32_t ad77681_set_REFp_buffer	(	struct ad77681_dev *	dev,
		enum ad77681_REFp_buffer	REFp )

Set the REF+ reference buffer

Parameters

dev	- The device structure.
REFp	- The positive reference buffer selector Accepted values: AD77681_BUFp_DISABLED AD77681_BUFp_ENABLED AD77681_BUFp_FULL_BUFFER_ON

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

◆ ad77681_set_status_bit()

int32_t ad77681_set_status_bit	(	struct ad77681_dev *	dev,
		bool	status_bit )

Enables Status bits output

Parameters

dev	- The device structure.
status_bit	- enable or disable status bit Accepted values: true false

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

◆ ad77681_set_VCM_output()

int32_t ad77681_set_VCM_output	(	struct ad77681_dev *	dev,
		enum ad77681_VCM_out	VCM_out )

Set the VCM output.

Parameters

dev	- The device structure.
VCM_out	- The VCM output voltage. Accepted values: AD77681_VCM_HALF_VCC AD77681_VCM_2_5V AD77681_VCM_2_05V AD77681_VCM_1_9V AD77681_VCM_1_65V AD77681_VCM_1_1V AD77681_VCM_0_9V AD77681_VCM_OFF

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

◆ ad77681_setup()

int32_t ad77681_setup	(	struct ad77681_dev **	device,
		struct ad77681_init_param	init_param,
		struct ad77681_status_registers **	status )

Initialize the device.

Parameters

device	- The device structure.
init_param	- The structure that contains the device initial parameters.
status	- The structure that will contains the ADC status

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

◆ ad77681_SINC3_ODR()

int32_t ad77681_SINC3_ODR	(	struct ad77681_dev *	dev,
		uint16_t *	sinc3_dec_reg,
		float	sinc3_odr )

Get SINC3 filter oversampling ratio register value based on user's inserted output data rate ODR

Parameters

dev	- The device structure.
sinc3_dec_reg	- Returned closest value of SINC3 register
sinc3_odr	- Desired output data rage

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

◆ ad77681_soft_reset()

int32_t ad77681_soft_reset ( struct ad77681_dev * dev )

Device reset over SPI.

Parameters

dev	- The device structure.

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

◆ ad77681_spi_read_adc_data()

int32_t ad77681_spi_read_adc_data	(	struct ad77681_dev *	dev,
		uint8_t *	adc_data,
		enum ad77681_data_read_mode	mode )

Read conversion result from device.

Parameters

dev	- The device structure.
adc_data	- The conversion result data
mode	- Data read mode Accepted values: AD77681_REGISTER_DATA_READ AD77681_CONTINUOUS_DATA_READ

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

◆ ad77681_spi_read_mask()

int32_t ad77681_spi_read_mask	(	struct ad77681_dev *	dev,
		uint8_t	reg_addr,
		uint8_t	mask,
		uint8_t *	data )

SPI 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.

◆ ad77681_spi_reg_read()

int32_t ad77681_spi_reg_read	(	struct ad77681_dev *	dev,
		uint8_t	reg_addr,
		uint8_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.

◆ ad77681_spi_reg_write()

int32_t ad77681_spi_reg_write	(	struct ad77681_dev *	dev,
		uint8_t	reg_addr,
		uint8_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.

◆ ad77681_spi_write_mask()

int32_t ad77681_spi_write_mask	(	struct ad77681_dev *	dev,
		uint8_t	reg_addr,
		uint8_t	mask,
		uint8_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.

◆ ad77681_status()

int32_t ad77681_status	(	struct ad77681_dev *	dev,
		struct ad77681_status_registers *	status )

Read from all ADC status registers

Parameters

dev	- The device structure.
status	- Structure with all satuts bits

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

◆ ad77681_update_sample_rate()

int32_t ad77681_update_sample_rate ( struct ad77681_dev * dev )

Update ADCs sample rate depending on MCLK, MCLK_DIV and filter settings

Parameters

dev	- The device structure.

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

Functions

Detailed Description

Function Documentation

◆ ad77681_apply_gain()

◆ ad77681_apply_offset()

◆ ad77681_clear_error_flags()

◆ ad77681_compute_crc8()

◆ ad77681_compute_xor()

◆ ad77681_CRC_status_handling()

◆ ad77681_data_to_voltage()

◆ ad77681_error_flags_enabe()

◆ ad77681_get_frame_byte()

◆ ad77681_get_rx_buf_len()

◆ ad77681_global_gpio()

◆ ad77681_gpio_inout()

◆ ad77681_gpio_open_drain()

◆ ad77681_gpio_read()

◆ ad77681_gpio_write()

◆ ad77681_initiate_sync()

◆ ad77681_power_down()

◆ ad77681_programmable_filter()

◆ ad77681_scratchpad()

◆ ad77681_set_50HZ_rejection()

◆ ad77681_set_AINn_buffer()

◆ ad77681_set_AINp_buffer()

◆ ad77681_set_continuos_read()

◆ ad77681_set_conv_mode()

◆ ad77681_set_convlen()

◆ ad77681_set_crc_sel()

◆ ad77681_set_filter_type()

◆ ad77681_set_mclk_div()

◆ ad77681_set_power_mode()

◆ ad77681_set_REFn_buffer()

◆ ad77681_set_REFp_buffer()

◆ ad77681_set_status_bit()

◆ ad77681_set_VCM_output()

◆ ad77681_setup()

◆ ad77681_SINC3_ODR()

◆ ad77681_soft_reset()

◆ ad77681_spi_read_adc_data()

◆ ad77681_spi_read_mask()

◆ ad77681_spi_reg_read()

◆ ad77681_spi_reg_write()

◆ ad77681_spi_write_mask()

◆ ad77681_status()

◆ ad77681_update_sample_rate()