ch.aplu.raspi

Class LightSensor

java.lang.Object

ch.aplu.raspi.LightSensor

public class LightSensor
extends java.lang.Object

Class that represents a light sensor.

Field Summary

Fields

Modifier and Type	Field and Description
static int	LS_FRONT_LEFT Constant for id of left front sensor
static int	LS_FRONT_RIGHT Constant for id of right front sensor
static int	LS_REAR_LEFT Constant for id of left rear sensor
static int	LS_REAR_RIGHT Constant for id of right rear sensor

Constructor Summary

Constructors

Constructor and Description
LightSensor(int id) Creates a light sensor instance with given id.

Method Summary

Methods

Modifier and Type	Method and Description
void	addLightListener(LightListener lightListener) Registers the given light listener with default trigger level 500.
void	addLightListener(LightListener lightListener, int triggerLevel) Registers the given light listener for the given trigger level.
int	getValue() Returns the current intensity value (0..255).
void	setTriggerLevel(int level) Sets a new trigger level.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LS_FRONT_LEFT

public static int LS_FRONT_LEFT

Constant for id of left front sensor

LS_FRONT_RIGHT

public static int LS_FRONT_RIGHT

Constant for id of right front sensor

LS_REAR_LEFT

public static int LS_REAR_LEFT

Constant for id of left rear sensor

LS_REAR_RIGHT

public static int LS_REAR_RIGHT

Constant for id of right rear sensor

Constructor Detail

LightSensor

public LightSensor(int id)

Creates a light sensor instance with given id. IDs: 0: front left, 1: front right, 2: rear left, 3: rear right The following global constants are defined: LS_FRONT_LEFT = 0, LS_FRONT_RIGHT = 1, LS_REAR_LEFT = 2, LS_REAR_RIGHT = 3.

Parameters:

id - the LightSensor identifier

Method Detail

getValue

public int getValue()

Returns the current intensity value (0..255).

Returns:

the measured light intensity

addLightListener

public void addLightListener(LightListener lightListener,
                    int triggerLevel)

Registers the given light listener for the given trigger level.

Parameters:

lightListener - the LightListener to get registered

triggerLevel - the trigger level where the callback is triggered

addLightListener

public void addLightListener(LightListener lightListener)

Registers the given light listener with default trigger level 500.

Parameters:

lightListener - the LightListener to get registered.

setTriggerLevel

public void setTriggerLevel(int level)

Sets a new trigger level.

Parameters:

level - the new level