Includes : Mbed library. More...

#include <GP2A.h>

Public Member Functions
	GP2A (PinName vmes, float dMin, float dMax, float slope, float origin=0)
	Constructor of a Sharp GP2 Familly object.
double	getDistance (void)
	Return the distance to target mesured by sensor in cm.
double	getVoltage (void)
	Return the current voltage on GP2A output.
	operator double ()
	A short hand of getDistance.

Detailed Description

Includes : Mbed library.

Parameters:

slope	= 60 for a GP2Y0A02 and 0.236 for a GP2Y0A21
origin	= 0 for a GP2Y0A02 and -0.297 for a GP2Y0A21

Definition at line 71 of file GP2A.h.

Constructor & Destructor Documentation

Constructor of a Sharp GP2 Familly object.

Parameters:

vmes	(PinName) : the Mbed pin used to connect with GP2A sensor
dMin	(double) : the GP2A sensor min distance to mesure
dMax	(double) : the GP2A sensor max distance to mesure
slope	(double) : the slope of the linear part of the graph V = f(1/d)
origin	(double) : the origin (Y for X=0) of the linear pat of the graph V = f(1/d)

Note:: you better use slope and origin value that I've put above as sybolic constants

Definition at line 3 of file GP2A.cpp.

double getDistance ( void )

Return the distance to target mesured by sensor in cm.

Note:: Distance is (very) approximative, to have a better mesurment I recommand an averaging of at least 5 measures; you may get a new mesurment every 50ms

Definition at line 11 of file GP2A.cpp.

double getVoltage ( void )

Return the current voltage on GP2A output.

Definition at line 20 of file GP2A.cpp.

operator double ( )

A short hand of getDistance.

Definition at line 25 of file GP2A.cpp.