mx2125.c File Reference

#include "mx2125.h"

Functions
int	mx_accel (int axisPin)
	Measure acceleration in terms of g (acceleration due to earth's gravity). A measurement of +/-1250 corresponds to approximately +/- 1 g. More...
int	mx_rotate (int xPin, int yPin)
	Measure clockwise rotation assuming accelerometer is held vertical. Zero degree rotation is when the triangle on the MX2125 chip is pointing up. More...
int	mx_tilt (int axisPin)
	Measure the level of tilt in terms of +/- 90 degrees. 0 degrees is when the top surface of the accelerometer chip is parallel to the ground. More...

Function Documentation

int mx_accel

(

int

axisPin)

Measure acceleration in terms of g (acceleration due to earth's gravity). A measurement of +/-1250 corresponds to approximately +/- 1 g.

Parameters

axisPin

Number of I/O pin connected to either MX2125's X- or Y- axis pins.

Returns

Value that represents 1250ths of a g acting on the axis. 1250ths is a nominal value, the accelerometer is not that precise.

int mx_rotate	(	int	xPin,
		int	yPin
	)

Measure clockwise rotation assuming accelerometer is held vertical. Zero degree rotation is when the triangle on the MX2125 chip is pointing up.

Parameters

xPin	Number of I/O pin connected to MX2125's x-axis pin.
yPin	Number of I/O pin connected to MX2125's y-axis pin.

Returns

Integer degree value (0 to 359) that represents the clockwise angle of rotation.

int mx_tilt

(

int

axisPin)

Measure the level of tilt in terms of +/- 90 degrees. 0 degrees is when the top surface of the accelerometer chip is parallel to the ground.

Parameters

axisPin

Number of I/O pin connected to either of MX2125's X- or Y- axis pins.

Returns

Value from 0 to 90 that represents the tilt of that axis.