001package com.pi4j.io.gpio.trigger; 002 003/* 004 * #%L 005 * ********************************************************************** 006 * ORGANIZATION : Pi4J 007 * PROJECT : Pi4J :: Java Library (Core) 008 * FILENAME : GpioInverseSyncStateTrigger.java 009 * 010 * This file is part of the Pi4J project. More information about 011 * this project can be found here: https://www.pi4j.com/ 012 * ********************************************************************** 013 * %% 014 * Copyright (C) 2012 - 2019 Pi4J 015 * %% 016 * This program is free software: you can redistribute it and/or modify 017 * it under the terms of the GNU Lesser General Public License as 018 * published by the Free Software Foundation, either version 3 of the 019 * License, or (at your option) any later version. 020 * 021 * This program is distributed in the hope that it will be useful, 022 * but WITHOUT ANY WARRANTY; without even the implied warranty of 023 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 024 * GNU General Lesser Public License for more details. 025 * 026 * You should have received a copy of the GNU General Lesser Public 027 * License along with this program. If not, see 028 * <http://www.gnu.org/licenses/lgpl-3.0.html>. 029 * #L% 030 */ 031 032import com.pi4j.io.gpio.GpioPin; 033import com.pi4j.io.gpio.GpioPinDigitalOutput; 034import com.pi4j.io.gpio.PinState; 035 036import java.util.List; 037 038@SuppressWarnings("unused") 039public class GpioInverseSyncStateTrigger extends OutputTargetedGpioTrigger { 040 041 public GpioInverseSyncStateTrigger(GpioPinDigitalOutput targetPin) { 042 super(targetPin); 043 } 044 045 public GpioInverseSyncStateTrigger(PinState state, GpioPinDigitalOutput targetPin) { 046 super(state, targetPin); 047 } 048 049 public GpioInverseSyncStateTrigger(PinState[] states, GpioPinDigitalOutput targetPin) { 050 super(states, targetPin); 051 } 052 053 public GpioInverseSyncStateTrigger(List<PinState> states, GpioPinDigitalOutput targetPin) { 054 super(states, targetPin); 055 } 056 057 @Override 058 public void invoke(GpioPin pin, PinState state) { 059 if (targetPin != null) { 060 if (state == PinState.HIGH) { 061 targetPin.setState(PinState.LOW); 062 } else { 063 targetPin.setState(PinState.HIGH); 064 } 065 } 066 } 067}