Implemented base of GpioMapperInterface with WiringPiMapper

lib/GpioMapperInterface.php

@@ -0,0 +1,37 @@
+<?php
+
+/*
+ * Copyright (C) 2014, NoccyLabs
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU 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 Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+namespace NoccyLabs\Gpio;
+
+interface GpioMapperInterface
+{
+    /**
+     * Map the GPIO pin numbers to a more logical number set, such as that of 
+     * wiringPi.
+     */
+    public function mapGpioToLogicalPin($gpio);
+    
+    /**
+     * Map a logical pin number, such as the ones used by wiringPi, into the
+     * actual GPIO pin number.
+     *
+     */
+     public function mapLogicalToGpioPin($logical);
+
+}