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/apa102/apa102.hpp

@@ -0,0 +1,143 @@
+/*
+ * Author: Yannick Adam <yannick.adam@gmail.com>
+ * Copyright (c) 2016 Yannick Adam
+ *
+ * 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 <mraa/gpio.hpp>
+#include <mraa/spi.hpp>
+#include <string>
+
+#define HIGH 1
+#define LOW 0
+
+namespace upm
+{
+/**
+ * @brief APA102 RGB LED Strip driver library
+ * @defgroup apa102 libupm-apa102
+ * @ingroup spi led
+ */
+
+/**
+ * @library apa102
+ * @sensor apa102
+ * @comname APA102/DotStar LED Strip
+ * @type led
+ * @man adafruit
+ * @con spi
+ *
+ * @brief API for controlling APA102/DotStar RGB LED Strips
+ *
+ * APA102 LED Strips provide individually controllable LEDs through a SPI interface.
+ * For each LED, brightness (0-31) and RGB (0-255) values can be set.
+ *
+ * @image html apa102.jpg
+ * @snippet apa102.cxx Interesting
+ */
+class APA102
+{
+  public:
+    /**
+     * Instantiates a new APA102 LED Strip
+     *
+     * @param ledCount  Number of APA102 leds in the strip
+     * @param spiBus    SPI Bus number
+     * @param batchMode (optional) Immediately write to SPI (false, default) or wait for a pushState
+     * call (true)
+     * @param csn       (optional) Chip Select Pin
+     */
+    APA102(uint16_t ledCount, uint8_t spiBus, bool batchMode = false, int8_t csn = -1);
+
+    /**
+     * APA102 destructor
+     */
+    ~APA102();
+
+    /**
+     * Change the color for a single led
+     *
+     * @param ledIdx        Index of the LED in the strip (0 based)
+     * @param brightness    Brightness value (0-31)
+     * @param r             Red component (0-255)
+     * @param g             Green component (0-255)
+     * @param b             Blue component (0-255)
+     */
+    void setLed(uint16_t ledIdx, uint8_t brightness, uint8_t r, uint8_t g, uint8_t b);
+
+    /**
+     * Change the color for all leds
+     *
+     * @param brightness    Brightness value (0-31)
+     * @param r             Red component (0-255)
+     * @param g             Green component (0-255)
+     * @param b             Blue component (0-255)
+     */
+    void setAllLeds(uint8_t brightness, uint8_t r, uint8_t g, uint8_t b);
+
+    /**
+     * Change the color for a range of leds
+     *
+     * @param startIdx      Start index of the range of LEDs in the strip (0 based)
+     * @param endIdx        End index of the range of LEDs in the strip (0 based)
+     * @param brightness    Brightness value (0-31)
+     * @param r             Red component (0-255)
+     * @param g             Green component (0-255)
+     * @param b             Blue component (0-255)
+     */
+    void
+    setLeds(uint16_t startIdx, uint16_t endIdx, uint8_t brightness, uint8_t r, uint8_t g, uint8_t b);
+
+    /**
+     * (Advanced) Manually control the colors of a range of LEDS
+     * Best used to maximize performance
+     *
+     * @param startIdx      Start index of the range of LEDs to update (0 based)
+     * @param endIdx        End index of the range of LEDs to update (0 based)
+     * @param colors        Pointer to an array of bytes. Each color is described as the following:
+     *                      B1: Brightness (224-255) B2: Blue (0-255) B3: Green (0-255) B4: Red
+     *(0-255)
+     *                      No check done on the boundaries
+     */
+    void setLeds(uint16_t startIdx, uint16_t endIdx, uint8_t* colors);
+
+    /**
+     * Outputs the current LED data to the SPI bus
+     * Note: Only required if batch mode is set to TRUE
+     *
+     */
+    void pushState();
+
+  private:
+    mraa::Spi* m_spi;
+    mraa::Gpio* m_csnPinCtx;
+
+    uint16_t m_ledCount;
+    uint8_t* m_leds;
+    uint16_t m_frameLength;
+
+    bool m_batchMode;
+
+    mraa::Result CSOn();
+    mraa::Result CSOff();
+};
+}