added arduino, modified build

arduino/libraries/Robot_Control/src/Compass.h

@@ -0,0 +1,42 @@
+/*
+  Copyright (c) 2013 Arduino LLC. All right reserved.
+
+  This library 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 2.1 of the License, or (at your option) any later version.
+
+  This library 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#ifndef Compass_h
+#define Compass_h
+
+#if ARDUINO >= 100
+#include "Arduino.h"
+#else
+#include "WProgram.h"
+#endif
+
+//0x21==0x42>>1, from bildr's code
+#define HMC6352SlaveAddress 0x21
+#define HMC6352ReadAddress 0x41
+
+class Compass{
+	public:
+		void begin();
+		float getReading();
+	private:
+		void _beginTransmission();
+		void _endTransmission();
+
+};
+
+#endif