Package ej.microui.led

Class Leds

java.lang.Object

ej.microui.led.Leds

public class Leds
extends Object

This class is used to manage all LEDs available on the platform. The available number of LEDs is known thanks to the method getNumberOfLeds(). A LED is identified by to its identifier. The range of the identifiers is from 0 to getNumberOfLeds()-1.

Field Summary

Fields

Modifier and Type	Field	Description
static int	MAX_INTENSITY	Constant for turning on a LED. If a LED does not handle intensity, any valid intensity different from MIN_INTENSITY turns the LED on.
static int	MIN_INTENSITY	Constant for turning off a LED.

Constructor Summary

Constructors

Constructor	Description
Leds()

Method Summary

Modifier and Type	Method	Description
static int	getLedIntensity(int ledId)	Gets the intensity of the specified LED.
static int	getNumberOfLeds()	Returns the available number of LEDs.
static void	setLedIntensity(int ledId, int intensity)	Controls the intensity of the specified LED.
static void	setLedOff(int ledId)	Turns off the given LED.
static void	setLedOn(int ledId)	Turns on the given LED.

Methods inherited from class java.lang.Object

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

Field Detail

MIN_INTENSITY

public static final int MIN_INTENSITY

Constant for turning off a LED.

See Also:

Constant Field Values

MAX_INTENSITY

public static final int MAX_INTENSITY

Constant for turning on a LED.

If a LED does not handle intensity, any valid intensity different from MIN_INTENSITY turns the LED on.

See Also:

Constant Field Values

Constructor Detail

Leds

public Leds()

Method Detail

getNumberOfLeds

public static int getNumberOfLeds()

Returns the available number of LEDs. The range of valid led identifiers is [0..Leds.getNumberOfLeds()-1].

Returns:

the number of leds

setLedIntensity

public static void setLedIntensity(int ledId,
                                   int intensity)

Controls the intensity of the specified LED. If the identifier is invalid (out of range) the method has no effect.

Parameters:

ledId - the led identifier

intensity - the intensity to set on the led

getLedIntensity

public static int getLedIntensity(int ledId)

Gets the intensity of the specified LED. If the identifier is invalid (out of range) the method returns 0.

Parameters:

ledId - the led identifier

Returns:

the led intensity

setLedOn

public static void setLedOn(int ledId)

Turns on the given LED. The effect is identical to Leds.setLedIntensity(ledId, MAX_INTENSITY).

Parameters:

ledId - the led identifier

setLedOff

public static void setLedOff(int ledId)

Turns off the given LED. The effect is identical to Leds.setLedIntensity(ledId, MIN_INTENSITY).

Parameters:

ledId - the led identifier