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/maxds3231m/maxds3231m.hpp

@@ -0,0 +1,133 @@
+/*
+ * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@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/i2c.hpp>
+
+#define ADDR                    0x68 // device address
+
+// timekeeping registers
+#define TIME_CAL_ADDR           0x00
+#define ALARM1_ADDR             0x07
+#define ALARM2_ADDR             0x0B
+#define CONTROL_ADDR            0x0E
+#define STATUS_ADDR             0x0F
+#define AGING_OFFSET_ADDR       0x10
+#define TEMPERATURE_ADDR        0x11
+
+// control register bits
+#define A1IE                    0x1
+#define A2IE                    0x2
+#define INTCN                   0x4
+
+// status register bits
+#define A1F                     0x1
+#define A2F                     0x2
+#define OSF                     0x80
+
+#define HIGH                    1
+#define LOW                     0
+
+namespace upm {
+
+struct Time3231 {
+    uint8_t second;
+    uint8_t minute;
+    uint8_t hour;
+    uint8_t day;
+    uint8_t month;
+    int16_t year;
+    uint8_t weekDay;
+};
+
+/**
+ * @brief MAXDS3231M Proximity Sensor library
+ * @defgroup maxds3231m libupm-maxds3231m
+ * @ingroup maxim i2c light
+ */
+/**
+ * @library maxds3231m
+ * @sensor maxds3231m
+ * @comname MAXDS3231M Real-Time Clock
+ * @type light
+ * @man maxim
+ * @con i2c
+ *
+ * @brief API for the MAXDS3231M I2C Real-Time Clock
+ *
+ * This module defines the API for MAXDS3231M
+ *
+ * @snippet maxds3231m.cxx Interesting
+ */
+class MAXDS3231M {
+    public:
+        /**
+         * Instantiates an MAXDS3231M object
+         *
+         * @param bus Number of the used bus
+         * @param devAddr Address of the used I2C device
+         */
+        MAXDS3231M (int bus=0, int devAddr=0x68);
+
+        /**
+         * Sets the date and time on the chip.
+         *
+         * @param time Time structure
+         */
+        void setDate (Time3231 &time);
+
+        /**
+         * Gets the date and time from the chip.
+         *
+         * @param time Time structure
+         */
+        bool getDate (Time3231 &time);
+
+        /**
+         * Gets the on-board temperature.
+         */
+        uint16_t getTemperature ();
+
+        /**
+         * Returns the name of the component
+         */
+        std::string name()
+        {
+            return m_name;
+        }
+    private:
+        std::string m_name;
+
+        int m_i2cAddr;
+        int m_bus;
+        mraa::I2c m_i2Ctx;
+
+        uint16_t i2cReadReg_N (int reg, unsigned int len, uint8_t * buffer);
+        mraa::Result i2cWriteReg_N (uint8_t reg, unsigned int len, uint8_t * buffer);
+        uint8_t DECtoBSD (uint8_t data);
+        uint8_t BCDtoDEC (uint8_t data);
+};
+
+}