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/rgbringcoder/rgbringcoder.hpp

@@ -0,0 +1,154 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2015 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 <iostream>
+#include <string>
+#include <stdint.h>
+#include <unistd.h>
+
+#include <mraa/gpio.hpp>
+
+#include <mraa/pwm.hpp>
+
+
+namespace upm {
+  /**
+   * @brief SparkFun RGB RingCoder
+   * @defgroup rgbringcoder libupm-rgbringcoder
+   * @ingroup seeed gpio led
+   */
+
+  /**
+   * @library rgbringcoder
+   * @sensor rgbringcoder
+   * @comname SparkFun RGB Ringcoder
+   * @type led
+   * @web https://www.sparkfun.com/products/11040
+   * @man sparkfun
+   * @con pwm gpio
+   *
+   * @brief API for the SparkFun* RGB RingCoder
+   *
+   * RGB RingCoder is a breakout board, a circular LED containing
+   * 16 LEDs arranged in a ring, and a rotary encoder. The encoder
+   * contains an RGB LED as well as a push button function.
+   *
+   * The device requires 11 pins, 3 of which must be PWM-capable
+   * (for the RGB LEDs).
+   * 
+   * @image html rgbringcoder.jpg
+   * @snippet rgbringcoder.cxx Interesting
+   */
+
+  class RGBRingCoder {
+  public:
+
+    /**
+     * RGBRingCoder constructor
+     *
+     * @param en Enables GPIO
+     * @param latch Latch GPIO
+     * @param clear Clears GPIO
+     * @param clk Clock GPIO
+     * @param dat Data out GPIO
+     * @param sw Push button switch GPIO
+     * @param encA Encoder A GPIO
+     * @param encB Encoder B GPIO
+     * @param red RGB red LED PWM
+     * @param green RGB green LED PWM
+     * @param blue RGB blue LED PWM
+     */
+    RGBRingCoder(int en, int latch, int clear, int clk, int dat, int sw, 
+                 int encA, int encB, int red, int green, int blue);
+
+    /**
+     * RGBRingCoder destructor
+     */
+    ~RGBRingCoder();
+
+    /*
+     * Sets the state of the ring LEDs. This is a 16-bit value, where
+     * each bit corresponds to one of the ring LEDs. A 1 bit means
+     * that a specific LED is on, and a 0 bit means that a specific LED is
+     * off.
+     *
+     * @param bits Bits representing the state of each LED
+     */
+    void setRingLEDS(uint16_t bits);
+
+    /* 
+     * Returns the state of the button
+     *
+     * @return True if the button is pressed, false otherwise
+     */
+    bool getButtonState();
+
+    /* 
+     * Gets the current rotary encoder counter value
+     *
+     * @return Current counter value
+     */
+    int getEncoderPosition() { return m_counter; };
+
+    /* 
+     * Sets the encoder counter to 0
+     */
+    void clearEncoderPosition() { m_counter = 0; };
+
+    /* 
+     * Sets the intensity of the red, green, and blue LEDs. Values can
+     * be between 0.0 and 1.0. Lower is brighter, higher is dimmer.
+     *
+     * @param r Red value; valid values are 0.0-1.0
+     * @param g Green value; valid values are 0.0-1.0
+     * @param b Blue value; valid values are 0.0-1.0
+     */
+    void setRGBLED(float r, float g, float b);
+
+  private:
+    
+    mraa::Gpio m_gpioEn;
+
+    mraa::Gpio m_gpioLatch;
+    mraa::Gpio m_gpioClear;
+    mraa::Gpio m_gpioClock;
+    mraa::Gpio m_gpioData;
+
+    mraa::Gpio m_gpioSwitch;
+
+    mraa::Pwm m_pwmRed;
+    mraa::Pwm m_pwmGreen;
+    mraa::Pwm m_pwmBlue;
+
+    mraa::Gpio m_gpioEncA;
+    mraa::Gpio m_gpioEncB;
+
+    static void interruptHandler(void *ctx);
+    volatile int m_counter;
+
+  };
+}
+
+