001package com.pi4j.io.gpio; 002 003/* 004 * #%L 005 * ********************************************************************** 006 * ORGANIZATION : Pi4J 007 * PROJECT : Pi4J :: Java Library (Core) 008 * FILENAME : GpioPinDigital.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/** 031 * Gpio digital pin interface. This interface is extension of {@link GpioPin} interface 032 * with operation to read digital states. 033 * 034 * @author Robert Savage (<a 035 * href="http://www.savagehomeautomation.com">http://www.savagehomeautomation.com</a>) 036 */ 037public interface GpioPinDigital extends GpioPin { 038 039 boolean isHigh(); 040 boolean isLow(); 041 PinState getState(); 042 boolean isState(PinState state); 043 044}