    ADXL345 Accelerometer interface definitions

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#include "../dev/mspi.h"
#include <stdio.h>
#include <util/delay.h>

Macros
#define	ADXL345_CS 2

#define	ADXL345_DEVICE_ID_REG 0x00
	Device ID Register.

#define	ADXL345_OUTX_LOW_REG 0x32
	x Acceleration Data register (high)

#define	ADXL345_OUTX_HIGH_REG 0x33
	x Acceleration Data register (low)

#define	ADXL345_OUTY_LOW_REG 0x34
	y Acceleration Data register (high)

#define	ADXL345_OUTY_HIGH_REG 0x35
	y Acceleration Data register (low)

#define	ADXL345_OUTZ_LOW_REG 0x36
	z Acceleration Data register (high)

#define	ADXL345_OUTZ_HIGH_REG 0x37
	z Acceleration Data register (low)

#define	adxl345_raw_to_mg(raw) (raw * 62) / 16;
	Convert raw value to mg value.

BW_RATE register/bits
#define	ADXL345_BW_RATE_REG 0x2C
	ADXL Data Rate and Power Mode Control Register. More...

#define	ADXL345_LOW_POWER 4
	Low power bit pos. More...

#define	ADXL345_RATE_L 0
	Rate bits [4] pos. More...

POWER_CTL register/bits
#define	ADXL345_POWER_CTL_REG 0x2D
	ADXL Power Control Register. More...

#define	ADXL345_LINK 5
	Link bit pos. More...

#define	ADXL345_AUTO_SLEEP 4
	AUTO_SLEEP bit pos. More...

#define	ADXL345_MEASURE 3
	Measure bit pos. More...

#define	ADXL345_SLEEP 2
	Sleep bit pos. More...

#define	ADXL345_WAKEUP_L 0
	Wakeup bits [2] LSB pos. More...

DATA_FORMAT register/bits
#define	ADXL345_DATA_FORMAT_REG 0x31
	ADXL Data Format Register Register. More...

#define	ADXL345_SELF_TEST 7
	SELF_TEST bit pos. More...

#define	ADXL345_SPI 6
	SPI bit pos. More...

#define	ADXL345_INT_INVERT 5
	INT_INVERT bit pos. More...

#define	ADXL345_FULL_RES 3
	FULL_RES bit pos. More...

#define	ADXL345_JUSTIFY 2
	Justify bit pos. More...

#define	ADXL345_RANGE_L 0
	Range bits [2] LSB pos. More...

FIFO_CTL register/bits
#define	ADXL345_FIFO_CTL_REG 0x38
	FIFO control register.

#define	ADXL345_FIFO_MODE_L 6
	FIFO_MODE bits [2] LSB pos. More...

#define	ADXL345_TRIGGER 5
	Trigger bit pos. More...

#define	ADXL345_SAMPLES_L 0
	Samples bits [5] LSB pos. More...

FIFO_STATUS register/bits
#define	ADXL345_FIFO_STATUS_REG 0x39
	FIFO status register.

#define	ADXL345_FIFO_TRIG 7
	FIFO_TRIG bit pos. More...

#define	ADXL345_ENTRIES_L 0
	Entries bits [6] LSB pos. More...

g range settings
#define	ADXL345_MODE_2G (0x0 << ADXL345_RANGE_L)
	+/- 2g, 256 LSB/g

#define	ADXL345_MODE_4G (0x1 << ADXL345_RANGE_L)
	+/- 4g, 128 LSB/g

#define	ADXL345_MODE_8G (0x2 << ADXL345_RANGE_L)
	+/- 8g, 64 LSB/g

#define	ADXL345_MODE_16G (0x3 << ADXL345_RANGE_L)
	+/- 16g, 32 LSB/g

FIFO mode settings
#define	ADXL345_MODE_BYPASS (0x0 << ADXL345_FIFO_MODE_L)

#define	ADXL345_MODE_FIFO (0x1 << ADXL345_FIFO_MODE_L)

#define	ADXL345_MODE_STREAM (0x2 << ADXL345_FIFO_MODE_L)

#define	ADXL345_MODE_TRIGGER (0x3 << ADXL345_FIFO_MODE_L)

Power mode settings
#define	ADXL345_PMODE_SLEEP 1

#define	ADXL345_PMODE_WAKEUP 3

#define	ADXL345_PMODE_STANDBY 4

Values for output data rate
See Also ADXL345_BW_RATE_REG
#define	ADXL345_ODR_0HZ10 (0x0 << ADXL345_RATE_L)

#define	ADXL345_ODR_0HZ20 (0x1 << ADXL345_RATE_L)

#define	ADXL345_ODR_0HZ39 (0x2 << ADXL345_RATE_L)

#define	ADXL345_ODR_0HZ78 (0x3 << ADXL345_RATE_L)

#define	ADXL345_ODR_1HZ56 (0x4 << ADXL345_RATE_L)

#define	ADXL345_ODR_3HZ13 (0x5 << ADXL345_RATE_L)

#define	ADXL345_ODR_6HZ25 (0x6 << ADXL345_RATE_L)

#define	ADXL345_ODR_12HZ5 (0x7 << ADXL345_RATE_L)

#define	ADXL345_ODR_25HZ (0x8 << ADXL345_RATE_L)

#define	ADXL345_ODR_50HZ (0x9 << ADXL345_RATE_L)

#define	ADXL345_ODR_100HZ (0xA << ADXL345_RATE_L)

#define	ADXL345_ODR_200HZ (0xB << ADXL345_RATE_L)

#define	ADXL345_ODR_400HZ (0xC << ADXL345_RATE_L)

#define	ADXL345_ODR_800HZ (0xD << ADXL345_RATE_L)

#define	ADXL345_ODR_1600HZ (0xE << ADXL345_RATE_L)

#define	ADXL345_ODR_3200HZ (0xF << ADXL345_RATE_L)

Functions
int8_t	adxl345_available (void)
	Checks if ADXL345 is available. More...

int8_t	adxl345_init (void)
	Initialize the ADXL345 accelerometer. More...

void	adxl345_deinit (void)
	Deinitilizes the ADX345 accelerometer. More...

int8_t	adxl345_ready (void)
	Checks whether the device is ready or not by reading the ID. More...

void	adxl345_set_g_range (uint8_t range)

void	adxl345_set_data_rate (uint8_t rate)

void	adxl345_set_fifomode (uint8_t mode)

void	adxl345_set_powermode (uint8_t mode)

uint8_t	adxl345_get_fifo_level ()
	Returns the current fill level of the internal FIFO (when operating in FIFO/Stream mode). More...

int16_t	adxl345_get_x (void)
	This function returns the current measured acceleration at the x-axis of the adxl345. More...

int16_t	adxl345_get_y (void)
	This function returns the current measured acceleration at the y-axis of the adxl345. More...

int16_t	adxl345_get_z (void)
	This function returns the current measured acceleration at the z-axis of the adxl345. More...

acc_data_t	adxl345_get (void)
	This function returns the current measured acceleration of all axis (x,y,z) More...

void	adxl345_write (uint8_t reg, uint8_t data)
	This function writes data to the given register of the ADXL345. More...

uint8_t	adxl345_read (uint8_t reg)
	This function reads from the given register of the ADXL345. More...

Detailed Description

    ADXL345 Accelerometer interface definitions

Author: Ulf Kulau kulau.nosp@m.@ibr.nosp@m..cs.t.nosp@m.u-bs.nosp@m..de Enrico Jörns joern.nosp@m.s@ib.nosp@m.r.cs..nosp@m.tu-b.nosp@m.s.de

Definition in file adxl345.h.

Macros

Functions

Detailed Description