001package com.pi4j.io.i2c;
002
003/*
004 * #%L
005 * **********************************************************************
006 * ORGANIZATION  :  Pi4J
007 * PROJECT       :  Pi4J :: Java Library (Core)
008 * FILENAME      :  I2CFactory.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 - 2015 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 java.io.IOException;
033
034/**
035 * I2C factory - it returns instances of {@link I2CBus} interface.
036 *
037 * @author Robert Savage (<a
038 *         href="http://www.savagehomeautomation.com">http://www
039 *         .savagehomeautomation.com</a>)
040 */
041public class I2CFactory
042{
043
044        volatile static I2CFactoryProvider provider = new I2CFactoryProviderRaspberry();
045
046        // private constructor
047        private I2CFactory()
048        {
049                // forbid object construction
050        }
051
052        /**
053         * Create new I2CBus instance
054         * 
055         * @return Return a new I2CBus impl instance.
056         * 
057         * @throws IOException
058         */
059        public static I2CBus getInstance(int busNumber) throws IOException
060        {
061                return provider.getBus(busNumber);
062        }
063
064        /**
065         * allow changing the provider for the factory
066         * @param factoryProvider
067         */
068        public static void setFactory(I2CFactoryProvider factoryProvider)
069        {
070                provider = factoryProvider;
071        }
072}