001package com.pi4j.io.gpio.trigger;
002
003/*
004 * #%L
005 * **********************************************************************
006 * ORGANIZATION  :  Pi4J
007 * PROJECT       :  Pi4J :: Java Library (Core)
008 * FILENAME      :  GpioPulseStateTrigger.java  
009 * 
010 * This file is part of the Pi4J project. More information about 
011 * this project can be found here:  http://www.pi4j.com/
012 * **********************************************************************
013 * %%
014 * Copyright (C) 2012 - 2013 Pi4J
015 * %%
016 * Licensed under the Apache License, Version 2.0 (the "License");
017 * you may not use this file except in compliance with the License.
018 * You may obtain a copy of the License at
019 * 
020 *      http://www.apache.org/licenses/LICENSE-2.0
021 * 
022 * Unless required by applicable law or agreed to in writing, software
023 * distributed under the License is distributed on an "AS IS" BASIS,
024 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
025 * See the License for the specific language governing permissions and
026 * limitations under the License.
027 * #L%
028 */
029
030
031import java.util.List;
032
033import com.pi4j.io.gpio.GpioPin;
034import com.pi4j.io.gpio.GpioPinDigitalOutput;
035import com.pi4j.io.gpio.PinState;
036
037public class GpioPulseStateTrigger extends GpioTriggerBase {
038
039    private final GpioPinDigitalOutput targetPin;
040    private final long milliseconds;
041
042    public GpioPulseStateTrigger(GpioPinDigitalOutput targetPin, long milliseconds) {
043        super();
044        this.targetPin = targetPin;
045        this.milliseconds = milliseconds;
046    }
047    
048    public GpioPulseStateTrigger(PinState state, GpioPinDigitalOutput targetPin, long milliseconds) {
049        super(state);
050        this.targetPin = targetPin;
051        this.milliseconds = milliseconds;
052    }
053
054    public GpioPulseStateTrigger(PinState[] states, GpioPinDigitalOutput targetPin, long milliseconds) {
055        super(states);
056        this.targetPin = targetPin;
057        this.milliseconds = milliseconds;
058    }
059
060    public GpioPulseStateTrigger(List<PinState> states, GpioPinDigitalOutput targetPin, long milliseconds) {
061        super(states);
062        this.targetPin = targetPin;
063        this.milliseconds = milliseconds;
064    }
065    
066    public GpioPinDigitalOutput getTargetPin() {
067        return targetPin;
068    }
069
070    @Override
071    public void invoke(GpioPin pin, PinState state) {
072        if (targetPin != null) {
073            targetPin.pulse(milliseconds);
074        }
075    }
076}