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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;

/*
 * #%L
 * **********************************************************************
 * ORGANIZATION  :  Pi4J
 * PROJECT       :  Pi4J :: Java Library (Core)
 * FILENAME      :  PiFacePin.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.impl.PinImpl;

import java.util.EnumSet;

/**
 * Raspberry Pi pin definitions.
 *
 * @author Robert Savage (http://www.savagehomeautomation.com)
 */
@SuppressWarnings("unused")
public class PiFacePin  {
    
    public static final Pin GPIO_00 = createDigitalPin(0, "GPIO 0"); 
    public static final Pin GPIO_01 = createDigitalAndPwmPin(1, "GPIO 1"); // PIN 1 supports PWM output
    public static final Pin GPIO_02 = createDigitalPin(2, "GPIO 2"); 
    public static final Pin GPIO_03 = createDigitalPin(3, "GPIO 3"); 
    public static final Pin GPIO_04 = createDigitalPin(4, "GPIO 4"); 
    public static final Pin GPIO_05 = createDigitalPin(5, "GPIO 5"); 
    public static final Pin GPIO_06 = createDigitalPin(6, "GPIO 6"); 
    public static final Pin GPIO_07 = createDigitalPin(7, "GPIO 7"); 
    public static final Pin GPIO_08 = createDigitalPin(8, "GPIO 8"); 
    public static final Pin GPIO_09 = createDigitalPin(9, "GPIO 9"); 
    public static final Pin GPIO_10 = createDigitalPin(10, "GPIO 10"); 
    public static final Pin GPIO_11 = createDigitalPin(11, "GPIO 11"); 
    public static final Pin GPIO_12 = createDigitalPin(12, "GPIO 12"); 
    public static final Pin GPIO_13 = createDigitalPin(13, "GPIO 13"); 
    public static final Pin GPIO_14 = createDigitalPin(14, "GPIO 14"); 
    public static final Pin GPIO_15 = createDigitalPin(15, "GPIO 15"); 
    public static final Pin GPIO_16 = createDigitalPin(16, "GPIO 16"); 
    public static final Pin GPIO_17 = createDigitalPin(17, "GPIO 17"); 
    public static final Pin GPIO_18 = createDigitalPin(18, "GPIO 18"); 
    public static final Pin GPIO_19 = createDigitalPin(19, "GPIO 19"); 
    public static final Pin GPIO_20 = createDigitalPin(20, "GPIO 20"); 
    
    private static Pin createDigitalPin(int address, String name) {
        return new PinImpl(RaspiGpioProvider.NAME, address, name, 
                    EnumSet.of(PinMode.DIGITAL_INPUT, PinMode.DIGITAL_OUTPUT),
                    PinPullResistance.all());
    }

    private static Pin createDigitalAndPwmPin(int address, String name) {
        return new PinImpl(RaspiGpioProvider.NAME, address, name, 
                           EnumSet.of(PinMode.DIGITAL_INPUT, PinMode.DIGITAL_OUTPUT, PinMode.PWM_OUTPUT),
                           PinPullResistance.all());
    }
}