Implementation of adxl372 Core Driver. More...

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include "adxl372.h"
#include "no_os_alloc.h"

Include dependency graph for adxl372.c:

Functions
int32_t	adxl372_read_reg (struct adxl372_dev dev, uint8_t reg_addr, uint8_t reg_data)

int32_t	adxl372_write_reg (struct adxl372_dev *dev, uint8_t reg_addr, uint8_t reg_data)

int32_t	adxl372_read_reg_multiple (struct adxl372_dev dev, uint8_t reg_addr, uint8_t reg_data, uint16_t count)

int32_t	adxl372_write_mask (struct adxl372_dev *dev, uint8_t reg_addr, uint32_t mask, uint8_t data)

int32_t	adxl372_set_activity_threshold (struct adxl372_dev *dev, enum adxl372_th_activity act, uint16_t thresh, bool referenced, bool enable)

int32_t	adxl372_set_op_mode (struct adxl372_dev *dev, enum adxl372_op_mode op_mode)

int32_t	adxl372_set_autosleep (struct adxl372_dev *dev, bool enable)

int32_t	adxl372_set_bandwidth (struct adxl372_dev *dev, enum adxl372_bandwidth bw)

int32_t	adxl372_set_act_proc_mode (struct adxl372_dev *dev, enum adxl372_act_proc_mode mode)

int32_t	adxl372_set_odr (struct adxl372_dev *dev, enum adxl372_odr odr)

int32_t	adxl372_set_instant_on_th (struct adxl372_dev *dev, enum adxl372_instant_on_th_mode mode)

int32_t	adxl372_set_wakeup_rate (struct adxl372_dev *dev, enum adxl372_wakeup_rate wur)

int32_t	adxl372_set_activity_time (struct adxl372_dev *dev, uint8_t time)

int32_t	adxl372_set_inactivity_time (struct adxl372_dev *dev, uint16_t time)

int32_t	adxl372_set_filter_settle (struct adxl372_dev *dev, enum adxl372_filter_settle mode)

int32_t	adxl372_interrupt_config (struct adxl372_dev *dev, struct adxl372_irq_config int1, struct adxl372_irq_config int2)

int32_t	adxl372_get_status (struct adxl372_dev dev, uint8_t status1, uint8_t status2, uint16_t fifo_entries)

int32_t	adxl372_reset (struct adxl372_dev *dev)

int32_t	adxl372_configure_fifo (struct adxl372_dev *dev, enum adxl372_fifo_mode mode, enum adxl372_fifo_format format, uint16_t fifo_samples)

int32_t	adxl372_service_fifo_ev (struct adxl372_dev dev, struct adxl372_xyz_accel_data fifo_data, uint16_t *fifo_entries)

int32_t	adxl372_get_fifo_xyz_data (struct adxl372_dev dev, struct adxl372_xyz_accel_data samples, uint16_t cnt)

int32_t	adxl372_get_highest_peak_data (struct adxl372_dev dev, struct adxl372_xyz_accel_data max_peak)

int32_t	adxl372_get_accel_data (struct adxl372_dev dev, struct adxl372_xyz_accel_data accel_data)

int32_t	adxl372_init (struct adxl372_dev **device, struct adxl372_init_param init_param)

Detailed Description

Implementation of adxl372 Core Driver.

Author: SPopa (stefa.nosp@m.n.po.nosp@m.pa@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

◆ adxl372_configure_fifo()

int32_t adxl372_configure_fifo	(	struct adxl372_dev *	dev,
		enum adxl372_fifo_mode	mode,
		enum adxl372_fifo_format	format,
		uint16_t	fifo_samples
	)

Configure the operating parameters for the FIFO.

Parameters

dev	- The device structure.
mode	- FIFO Mode. Specifies FIFO operating mode. Accepted values: ADXL372_FIFO_BYPASSED ADXL372_FIFO_STREAMED ADXL372_FIFO_TRIGGERED ADXL372_FIFO_OLD_SAVED
format	- FIFO Format. Specifies which data is stored in the FIFO buffer. Accepted values: ADXL372_XYZ_FIFO ADXL372_X_FIFO ADXL372_Y_FIFO ADXL372_XY_FIFO ADXL372_Z_FIFO ADXL372_XZ_FIFO ADXL372_YZ_FIFO ADXL372_XYZ_PEAK_FIFO
fifo_samples	- FIFO Samples. Watermark number of FIFO samples that triggers a FIFO_FULL condition when reached. Values range from 0 to 512.

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

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◆ adxl372_get_accel_data()

int32_t adxl372_get_accel_data	(	struct adxl372_dev *	dev,
		struct adxl372_xyz_accel_data *	accel_data
	)

Retrieve 3-axis acceleration data

Parameters

dev	- The device structure.
accel_data	- pointer to a variable of type adxl372_xyz_accel_data where (x, y, z) acceleration data will be stored.

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

◆ adxl372_get_fifo_xyz_data()

int32_t adxl372_get_fifo_xyz_data	(	struct adxl372_dev *	dev,
		struct adxl372_xyz_accel_data *	samples,
		uint16_t	cnt
	)

Get the data stored in FIFO.

Parameters

dev	- The device structure.
samples	- pointer to the raw data stored in the ADXL372_FIFO_DATA
cnt	- How many samples should be retrieved from the FIFO DATA reg

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

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◆ adxl372_get_highest_peak_data()

int32_t adxl372_get_highest_peak_data	(	struct adxl372_dev *	dev,
		struct adxl372_xyz_accel_data *	max_peak
	)

Retrieve the highest magnitude (x, y, z) sample recorded since the last read of the MAXPEAK registers

Parameters

dev	- The device structure.
max_peak	- pointer to a variable of type adxl372_xyz_accel_data where (x, y, z) max values will be stored.

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

◆ adxl372_get_status()

int32_t adxl372_get_status	(	struct adxl372_dev *	dev,
		uint8_t *	status1,
		uint8_t *	status2,
		uint16_t *	fifo_entries
	)

Get the STATUS, STATUS2, FIFO_ENTRIES and FIFO_ENTRIES2 registers data

Parameters

dev	- The device structure.
status1	- Data stored in the STATUS1 register
status2	- Data stored in the STATUS2 register
fifo_entries	- Number of valid data samples present in the FIFO buffer (0 to 512)

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

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◆ adxl372_init()

int32_t adxl372_init	(	struct adxl372_dev **	device,
		struct adxl372_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.

◆ adxl372_interrupt_config()

int32_t adxl372_interrupt_config	(	struct adxl372_dev *	dev,
		struct adxl372_irq_config	int1,
		struct adxl372_irq_config	int2
	)

Configure the INT1 and INT2 interrupt pins.

Parameters

dev	- The device structure.
int1	- INT1 interrupt pins.
int2	- INT2 interrupt pins.

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

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◆ adxl372_read_reg()

int32_t adxl372_read_reg	(	struct adxl372_dev *	dev,
		uint8_t	reg_addr,
		uint8_t *	reg_data
	)

Wrapper used to read device registers.

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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◆ adxl372_read_reg_multiple()

int32_t adxl372_read_reg_multiple	(	struct adxl372_dev *	dev,
		uint8_t	reg_addr,
		uint8_t *	reg_data,
		uint16_t	count
	)

Wrapper used of multibyte reads.

Parameters

dev	- The device structure.
reg_addr	- The register address.
reg_data	- The register data.
count	- Number of bytes to read.

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

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◆ adxl372_reset()

int32_t adxl372_reset ( struct adxl372_dev * dev )

Software reset.

Parameters

dev	- The device structure.

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

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◆ adxl372_service_fifo_ev()

int32_t adxl372_service_fifo_ev	(	struct adxl372_dev *	dev,
		struct adxl372_xyz_accel_data *	fifo_data,
		uint16_t *	fifo_entries
	)

Retrieve data stored in FIFO. Can be used in polling mode, but works best when interrupts are used

Parameters

dev	- The device structure.
fifo_data	- pointer to an array of type adxl372_xyz_accel_data where (x, y, z) values will be stored. Array max size should be 170, as the FIFO can hold up to 512 samples.
fifo_entries	- pointer which will store the number of valid data samples present in the FIFO buffer

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

◆ adxl372_set_act_proc_mode()

int32_t adxl372_set_act_proc_mode	(	struct adxl372_dev *	dev,
		enum adxl372_act_proc_mode	mode
	)

Link/Loop Activity Processing.

Parameters

dev	- The device structure.
mode	- Mode of operation. Accepted values: ADXL372_DEFAULT ADXL372_LINKED ADXL372_LOOPED

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

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◆ adxl372_set_activity_threshold()

int32_t adxl372_set_activity_threshold	(	struct adxl372_dev *	dev,
		enum adxl372_th_activity	act,
		uint16_t	thresh,
		bool	referenced,
		bool	enable
	)

Set the threshold for activity detection for all 3-axis

Parameters

dev	- The device structure.
act	- Type of activity. Accepted values: ADXL372_ACTIVITY ADXL372_ACTIVITY2 ADXL372_INACTIVITY
thresh	- 11-bit unsigned value sets the threshold for activity, activity2 or inactivity detection.
referenced	- Selects referenced or absolute activity processing.
enable	- Enable activity detection using all 3-axis data.

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

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◆ adxl372_set_activity_time()

int32_t adxl372_set_activity_time	(	struct adxl372_dev *	dev,
		uint8_t	time
	)

Set the activity timer

Parameters

dev	- The device structure.
time	- The value set in this register.

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

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◆ adxl372_set_autosleep()

int32_t adxl372_set_autosleep	(	struct adxl372_dev *	dev,
		bool	enable
	)

Autosleep. When set to 1, autosleep is enabled, and the device enters wake-up mode automatically upon detection of inactivity.

Parameters

dev	- The device structure.
enable	- Accepted values: true false

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

◆ adxl372_set_bandwidth()

int32_t adxl372_set_bandwidth	(	struct adxl372_dev *	dev,
		enum adxl372_bandwidth	bw
	)

Select the desired output signal bandwidth.

Parameters

dev	- The device structure.
bw	- bandwidth. Accepted values: ADXL372_BW_200HZ ADXL372_BW_400HZ ADXL372_BW_800HZ ADXL372_BW_1600HZ ADXL372_BW_3200HZ

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

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◆ adxl372_set_filter_settle()

int32_t adxl372_set_filter_settle	(	struct adxl372_dev *	dev,
		enum adxl372_filter_settle	mode
	)

Set the filter settling period.

Parameters

dev	- The device structure.
mode	- settle period Accepted values: ADXL372_FILTER_SETTLE_370 ADXL372_FILTER_SETTLE_16

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

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◆ adxl372_set_inactivity_time()

int32_t adxl372_set_inactivity_time	(	struct adxl372_dev *	dev,
		uint16_t	time
	)

Set the inactivity timer

Parameters

dev	- The device structure.
time	- is the 16-bit value set by the TIME_INACT_L register (eight LSBs) and the TIME_INACT_H register (eight MSBs).

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

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◆ adxl372_set_instant_on_th()

int32_t adxl372_set_instant_on_th	(	struct adxl372_dev *	dev,
		enum adxl372_instant_on_th_mode	mode
	)

Select instant on threshold

Parameters

dev	- The device structure.
mode	- 0 = low threshold, 1 = high threshold. Accepted values: ADXL372_INSTANT_ON_LOW_TH ADXL372_INSTANT_ON_HIGH_TH

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

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◆ adxl372_set_odr()

int32_t adxl372_set_odr	(	struct adxl372_dev *	dev,
		enum adxl372_odr	odr
	)

Set Output data rate.

Parameters

dev	- The device structure.
odr	- Output data rate. Accepted values: ADXL372_ODR_400HZ ADXL372_ODR_800HZ ADXL372_ODR_1600HZ ADXL372_ODR_3200HZ ADXL372_ODR_6400HZ

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

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◆ adxl372_set_op_mode()

int32_t adxl372_set_op_mode	(	struct adxl372_dev *	dev,
		enum adxl372_op_mode	op_mode
	)

Set the mode of operation.

Parameters

dev	- The device structure.
op_mode	- Mode of operation. Accepted values: ADXL372_STANDBY ADXL372_WAKE_UP ADXL372_INSTANT_ON ADXL372_FULL_BW_MEASUREMENT

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

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◆ adxl372_set_wakeup_rate()

int32_t adxl372_set_wakeup_rate	(	struct adxl372_dev *	dev,
		enum adxl372_wakeup_rate	wur
	)

Set the Timer Rate for Wake-Up Mode.

Parameters

dev	- The device structure.
wur	- wake up mode rate Accepted values: ADXL372_WUR_52ms ADXL372_WUR_104ms ADXL372_WUR_208ms ADXL372_WUR_512ms ADXL372_WUR_2048ms ADXL372_WUR_4096ms ADXL372_WUR_8192ms ADXL372_WUR_24576ms

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

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◆ adxl372_write_mask()

int32_t adxl372_write_mask	(	struct adxl372_dev *	dev,
		uint8_t	reg_addr,
		uint32_t	mask,
		uint8_t	data
	)

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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◆ adxl372_write_reg()

int32_t adxl372_write_reg	(	struct adxl372_dev *	dev,
		uint8_t	reg_addr,
		uint8_t	reg_data
	)

Wrapper used to write to device registers.

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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Functions

Detailed Description

Function Documentation

◆ adxl372_configure_fifo()

◆ adxl372_get_accel_data()

◆ adxl372_get_fifo_xyz_data()

◆ adxl372_get_highest_peak_data()

◆ adxl372_get_status()

◆ adxl372_init()

◆ adxl372_interrupt_config()

◆ adxl372_read_reg()

◆ adxl372_read_reg_multiple()

◆ adxl372_reset()

◆ adxl372_service_fifo_ev()

◆ adxl372_set_act_proc_mode()

◆ adxl372_set_activity_threshold()

◆ adxl372_set_activity_time()

◆ adxl372_set_autosleep()

◆ adxl372_set_bandwidth()

◆ adxl372_set_filter_settle()

◆ adxl372_set_inactivity_time()

◆ adxl372_set_instant_on_th()

◆ adxl372_set_odr()

◆ adxl372_set_op_mode()

◆ adxl372_set_wakeup_rate()

◆ adxl372_write_mask()

◆ adxl372_write_reg()