Device driver interface for the ADXL345. More...

Detailed Description

Device driver interface for the ADXL345.

This driver provides [S]ensor [A]ctuator [U]ber [L]ayer capabilities.

Files
file	adxl345_params.h
	Default configuration for ADXL345 devices.

file	adxl345_regs.h
	Register and bit definitions for the ADXL345.

file	adxl345.h
	Interface definition for the ADXL345.

Data Structures
struct	adxl345_data_t
	ADXL345 result vector struct. More...

struct	adxl345_interrupt_t
	Interrupt configuration struct for the ADXL345 sensor. More...

struct	adxl345_params_t
	Configuration struct for the ADXL345 sensor. More...

struct	adxl345_t
	Device descriptor for the ADXL345 sensor. More...

Enumerations
enum	{ ADXL345_ADDR_1D = 0x1D , ADXL345_ADDR_53 = 0x53 }
	Possible ADXL345 hardware addresses (wiring specific) More...

enum	{ ADXL345_MEASURE_MODE , ADXL345_STANDBY_MODE , ADXL345_SLEEP_MODE , ADXL345_AUTOSLEEP_MODE }
	List ADXL345 power mode. More...

enum	{ ADXL345_RANGE_2G = 0 , ADXL345_RANGE_4G = 1 , ADXL345_RANGE_8G = 2 , ADXL345_RANGE_16G = 3 }
	Define ADXL345 sensitivity. More...

enum	{ ADXL345_RATE_0HZ1 = 0 , ADXL345_RATE_0HZ2 = 1 , ADXL345_RATE_0HZ39 = 2 , ADXL345_RATE_0HZ78 = 3 , ADXL345_RATE_1HZ56 = 4 , ADXL345_RATE_3HZ13 = 5 , ADXL345_RATE_6HZ25 = 6 , ADXL345_RATE_12HZ50 = 7 , ADXL345_RATE_25HZ = 8 , ADXL345_RATE_50HZ = 9 , ADXL345_RATE_100HZ = 10 , ADXL345_RATE_200HZ = 11 , ADXL345_RATE_400HZ = 12 , ADXL345_RATE_800HZ = 13 , ADXL345_RATE_1600HZ = 14 , ADXL345_RATE_3200HZ = 15 }
	List bandwidth rate. More...

enum	{ ADXL345_BYPASS = 0 , ADXL345_FIFO = 1 , ADXL345_STREAM = 2 , ADXL345_TRIGGER = 3 }
	List fifo mode. More...

enum	{ ADXL345_INT1 , ADXL345_INT2 }
	Output Interrupt selection. More...

enum	{ ADXL345_OK = 0 , ADXL345_DATA_READY = 1 , ADXL345_NOI2C = -1 , ADXL345_NODEV = -2 , ADXL345_NODATA = -3 }
	Named return values. More...

Functions
int	adxl345_init (adxl345_t dev, const adxl345_params_t params)
	Initialize the ADXL345 accelerometer driver. More...

void	adxl345_read (const adxl345_t dev, adxl345_data_t data)
	Read accelerometer's data. More...

void	adxl345_set_interrupt (const adxl345_t *dev)
	set ADXL345's interrupts configuration More...

void	adxl345_set_measure (const adxl345_t *dev)
	set ADXL345's measure mode More...

void	adxl345_set_standby (const adxl345_t *dev)
	Set standby mode. More...

void	adxl345_set_sleep (const adxl345_t *dev)
	Set sleep mode. More...

void	adxl345_set_autosleep (const adxl345_t *dev)
	Set autosleep mode. More...

void	adxl345_set_bandwidth_rate (const adxl345_t *dev, uint8_t bw_rate)
	Set bandwidth rate. More...

void	adxl345_set_fifo_mode (const adxl345_t *dev, uint8_t mode, uint8_t output, uint8_t value)
	Set fifo mode with its configuration. More...

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Possible ADXL345 hardware addresses (wiring specific)

Enumerator
ADXL345_ADDR_1D	I2C device address if Alt addr pin is high.
ADXL345_ADDR_53	I2C device address if Alt addr pin is low.

Definition at line 36 of file adxl345.h.

◆ anonymous enum

anonymous enum

List ADXL345 power mode.

Enumerator
ADXL345_MEASURE_MODE	Measure mode.
ADXL345_STANDBY_MODE	Standby mode.
ADXL345_SLEEP_MODE	Sleep mode.
ADXL345_AUTOSLEEP_MODE	Autosleep mode.

Definition at line 44 of file adxl345.h.

◆ anonymous enum

anonymous enum

Define ADXL345 sensitivity.

Enumerator
ADXL345_RANGE_2G	+/- 2 g Full Scale Range
ADXL345_RANGE_4G	+/- 4 g Full Scale Range
ADXL345_RANGE_8G	+/- 8 g Full Scale Range
ADXL345_RANGE_16G	+/- 16 g Full Scale Range

Definition at line 54 of file adxl345.h.

◆ anonymous enum

anonymous enum

List bandwidth rate.

Enumerator
ADXL345_RATE_0HZ1	0.1 Hz Output Data Rate
ADXL345_RATE_0HZ2	0.2 Hz Output Data Rate
ADXL345_RATE_0HZ39	0.39 Hz Output Data Rate
ADXL345_RATE_0HZ78	0.78 Hz Output Data Rate
ADXL345_RATE_1HZ56	1.56 Hz Output Data Rate
ADXL345_RATE_3HZ13	3.13 Hz Output Data Rate
ADXL345_RATE_6HZ25	6.25 Hz Output Data Rate
ADXL345_RATE_12HZ50	12.5 Hz Output Data Rate
ADXL345_RATE_25HZ	25 Hz Output Data Rate
ADXL345_RATE_50HZ	50 Hz Output Data Rate
ADXL345_RATE_100HZ	100 Hz Output Data Rate
ADXL345_RATE_200HZ	200 Hz Output Data Rate
ADXL345_RATE_400HZ	400 Hz Output Data Rate
ADXL345_RATE_800HZ	800 Hz Output Data Rate
ADXL345_RATE_1600HZ	1600 Hz Output Data Rate
ADXL345_RATE_3200HZ	3200 Hz Output Data Rate

Definition at line 64 of file adxl345.h.

◆ anonymous enum

anonymous enum

List fifo mode.

Enumerator
ADXL345_BYPASS	FIFO bypass mode.
ADXL345_FIFO	FIFO mode.
ADXL345_STREAM	FIFO stream mode.
ADXL345_TRIGGER	FIFO trigger mode.

Definition at line 86 of file adxl345.h.

◆ anonymous enum

anonymous enum

Output Interrupt selection.

Enumerator
ADXL345_INT1	Output interrupt on INT1 pin.
ADXL345_INT2	Output interrupt on INT2 pin.

Definition at line 96 of file adxl345.h.

◆ anonymous enum

anonymous enum

Named return values.

Enumerator
ADXL345_OK	everything was fine
ADXL345_DATA_READY	new data ready to be read
ADXL345_NOI2C	I2C communication failed.
ADXL345_NODEV	no ADXL345 device found on the bus
ADXL345_NODATA	no data available

Definition at line 104 of file adxl345.h.

Function Documentation

◆ adxl345_init()

int adxl345_init	(	adxl345_t *	dev,
		const adxl345_params_t *	params
	)

Initialize the ADXL345 accelerometer driver.

Parameters

[out]	dev	device descriptor of accelerometer to initialize
[in]	params	configuration parameters

Returns: ADXL345_OK on success; ADXL345_NOI2C if initialization of I2C bus failed; ADXL345_NODEV if accelerometer test failed

◆ adxl345_read()

void adxl345_read	(	const adxl345_t *	dev,
		adxl345_data_t *	data
	)

Read accelerometer's data.

Acceleration will be calculated as:
$accel = {value \times 3.9}$ if full scale is set to 2g
$accel = {value \times 7.8}$ if full scale is set to 4g
$accel = {value \times 15.6}$ if full scale is set to 8g
$accel = {value \times 31.2}$ if full scale is set to 16g

Parameters

[in]	dev	device descriptor of accelerometer
[out]	data	the current acceleration data [in mg]

◆ adxl345_set_autosleep()

void adxl345_set_autosleep ( const adxl345_t * dev )

Set autosleep mode.

Parameters

[in] dev device descriptor of accelerometer

◆ adxl345_set_bandwidth_rate()

void adxl345_set_bandwidth_rate	(	const adxl345_t *	dev,
		uint8_t	bw_rate
	)

Set bandwidth rate.

Parameters

[in]	dev	device descriptor of accelerometer
[in]	bw_rate	new datarate

◆ adxl345_set_fifo_mode()

void adxl345_set_fifo_mode	(	const adxl345_t *	dev,
		uint8_t	mode,
		uint8_t	output,
		uint8_t	value
	)

Set fifo mode with its configuration.

Parameters

[in]	dev	device descriptor of accelerometer
[in]	mode	fifo mode configuration
[in]	output	set trigger output
[in]	value	set trigger's value

◆ adxl345_set_interrupt()

void adxl345_set_interrupt ( const adxl345_t * dev )

set ADXL345's interrupts configuration

Parameters

[in] dev device descriptor of accelerometer

◆ adxl345_set_measure()

void adxl345_set_measure ( const adxl345_t * dev )

set ADXL345's measure mode

Parameters

[in] dev device descriptor of accelerometer

◆ adxl345_set_sleep()

void adxl345_set_sleep ( const adxl345_t * dev )

Set sleep mode.

Parameters

[in] dev device descriptor of accelerometer

◆ adxl345_set_standby()

void adxl345_set_standby ( const adxl345_t * dev )

Set standby mode.

Parameters

[in] dev device descriptor of accelerometer

Detailed Description

Files

Data Structures

Enumerations

Functions

Enumeration Type Documentation

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

Function Documentation

◆ adxl345_init()

◆ adxl345_read()

◆ adxl345_set_autosleep()

◆ adxl345_set_bandwidth_rate()

◆ adxl345_set_fifo_mode()

◆ adxl345_set_interrupt()

◆ adxl345_set_measure()

◆ adxl345_set_sleep()

◆ adxl345_set_standby()