cpp_headers: Renamed C++ headers from .h -> .hpp

To make room for UPM C and C++ sensor code to coexist, all UPM
C++ headers have been renamed from h -> hpp.  This commit contains
updates to documentation, includes, cmake collateral, examples, and
swig interface files.

    * Renamed all cxx/cpp header files which contain the string
    'copyright intel' from .h -> .hpp (if not already hpp).

    * Replaced all references to .h with .hpp in documentation,
    source files, cmake collateral, example code, and swig interface
    files.

    * Replaced cmake variable module_h with module_hpp.

    * Intentionally left upm.h since this file currently does not
    contain code (documentation only).

Signed-off-by: Noel Eck <noel.eck@intel.com>

src/joystick12/joystick12.hpp

@@ -0,0 +1,97 @@
+/*
+ * Author: Alexander Komarov <alexander.komarov@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#pragma once
+
+#include <string>
+#include <mraa/gpio.h>
+#include <mraa/aio.h>
+
+namespace upm {
+
+/**
+ * @brief Analog Joystick library
+ * @defgroup joystick12 libupm-joystick12
+ * @ingroup generic analog ainput robok
+ */
+
+/**
+ * @library joystick12
+ * @sensor joystick12
+ * @comname Analog Joystick
+ * @type ainput
+ * @man generic
+ * @con analog
+ * @kit robok
+ *
+ * @brief API for the ElecFreaks* Joystick v 1.2-1.4 Breakout
+ *
+ * This module defines the Joystick API, and implementation for the X and Y
+ * buttons could be treated as normal GPIO - this enables easier
+ * interrupt support. This driver should be compatible with any
+ * 2-axis analog joystick.
+ *
+ * @image html joystick12.jpg
+ * @snippet joystick12-example.cxx Interesting
+ */
+class Joystick12 {
+    public:
+        /**
+         * Instantiates a Joystick object
+         *
+         * @param pinX Analog pin where the X input is connected
+         * @param pinY Analog pin where the Y input is connected
+         */
+        Joystick12(int pinX, int pinY);
+
+        /**
+         * Joystick object destructor
+         */
+        ~Joystick12();
+
+        /**
+         * Gets the X input
+         * @return float X value, ranging from -1 to 1; 0 is mid
+         */
+        float getXInput();
+
+        /**
+         * Gets the Y input
+         *
+         * @return float Y value, ranging from -1 to 1; 0 is mid
+         */
+        float getYInput();
+
+    private:
+        mraa_aio_context    m_joystickCtxX;
+        mraa_aio_context    m_joystickCtxY;
+
+        static const int X_left;
+        static const int X_center;
+        static const int X_right;
+        static const int Y_left;
+        static const int Y_center;
+        static const int Y_right;
+};
+};
+