com.pi4j.io.gpio.event.PinDigitalStateChangeEvent Maven / Gradle / Ivy

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This bundle wraps Pi4j (http://pi4j.com) that wraps the native code Wiring Pi (http://wiringpi.com). It wraps these libraries to make them OSGi friendly and allow them to work together with the OSGi enRoute IoT circuit library (osgi.enroute.iot.circuit). The bundle will first use Pi4J to detect on what hardware it runs. If it runs on an appropriate type, it will register a component that can be configured with Metatype. The Metatype defines a full blown configuration template for all the Pi's functions. The GPIO's are registered as components for the circuit. Regardless of the success of the configuration, this bundle will also register a GpioController service, which is the main Pi4J class.

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package com.pi4j.io.gpio.event;

/*
 * #%L
 * **********************************************************************
 * ORGANIZATION  :  Pi4J
 * PROJECT       :  Pi4J :: Java Library (Core)
 * FILENAME      :  PinDigitalStateChangeEvent.java  
 * 
 * This file is part of the Pi4J project. More information about 
 * this project can be found here:  http://www.pi4j.com/
 * **********************************************************************
 * %%
 * Copyright (C) 2012 - 2015 Pi4J
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */


import com.pi4j.io.gpio.Pin;
import com.pi4j.io.gpio.PinState;


/**
 * GPIO digital pin state change event.
 *
 * @author Robert Savage (http://www.savagehomeautomation.com)
 */
public class PinDigitalStateChangeEvent extends PinEvent {

    private static final long serialVersionUID = -7643355305429082626L;
    private final PinState state;

    /**
     * Default event constructor
     * 
     * @param obj Ignore this parameter
     * @param pin GPIO pin number (not header pin number; not wiringPi pin number)
     * @param state New GPIO pin state.
     */
    public PinDigitalStateChangeEvent(Object obj, Pin pin, PinState state) {
        super(obj, pin, PinEventType.DIGITAL_STATE_CHANGE);
        this.state = state;
    }

    /**
     * Get the new pin state raised in this event.
     * 
     * @return GPIO pin state (HIGH, LOW)
     */
    public PinState getState() {
        return state;
    }
}