ozw: Rework and add some device specific drivers and examples.

This commit reworks ozw somewhat and adds some device specific drivers
with examples.  All of these drivers are kept in the UPM ozw library.

The OZW class has been reworked to make it a proper singleton, since
the OpenZWave::Manager() it depends on is already a singleton.  This
avoids issues such as opening and initializing OpenZWave multiple
times.

A new, relatively thin base class, ozwInterface is also now present.
This class wraps some basic functionality, and handles initialization
of the OZW base class.  It is intended to be inherited by device
driver classes.  It operates on a node id for a device.  Each OZW
device is referenced by a node id, which does not change unless the
device is removed (and possibly re-added) to a Z-Wave network.

Finally, a series of device specific drivers have been implemented.
These provide basic functionality to monitor and in some cases control
the operation of a Z-Wave device.  They are the following:

ozwdump - This is a fake 'device' driver that initializes an OZW
network and dumps information on all of the nodes (devices) present.
Along with each node, available information on each valueid associated
with that node is also printed.  This fake device and it's examples
replace the original ozw example.

aeotecss6 - Aeotec Smart Switch 6.  This device allows control of the
switch, as well as reporting of information the switch makes
available, such as current consumption, volts, watts, and accumulated
energy use (kWh).

aeotecsdg2 - Aeotec Smart Dimmer Gen 2.  This device is similar to the
Smart Switch 6, but also provides dimming functionality.  It also
provides information on energy use.

aeotecdw2e - Aeotec Door/Window Sensor 2nd Edition.  This device is a
magnetic switch with an embedded tamper switch used to detect the
opening/closing of windows and doors.  This is a battery powered
device.

aeotecdsb09104 - Aeotec Home Energy Monitor.  This device is intended
to be installed at the MAINS or Breaker box.  It reports current and
cumulative energy consumption.

tzemt400 - Trane TZEMT400 Thermostat.  This device is a thermostat
with Z-Wave functionality.  The variant tested was the
TZEMT400BB32MAA.  The driver reports various information on the status
of the thermostat, as well as the current measured temperature.

Signed-off-by: Jon Trulson <jtrulson@ics.com>

src/ozw/zwNode.hpp

@@ -1,6 +1,6 @@
 /*
  * Author: Jon Trulson <jtrulson@ics.com>
- * Copyright (c) 2015 Intel Corporation.
+ * Copyright (c) 2015-2016l Corporation.
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -24,14 +24,28 @@
 #pragma once
 
 #include <map>
+#include <list>
 
 #include "Manager.h"
 
 namespace upm {
 
+  /**
+   * @library ozw
+   *
+   * @brief Node management for ozw
+   *
+   * This class is used by ozw to manage valueids for a node (device).
+   * No user-servicable parts inside.  It is not exposed to the end
+   * user.
+   */
+
   class zwNode {
   public:
+    // valueid map
     typedef std::map<int, OpenZWave::ValueID> valueMap_t;
+    // valueid list, used for sorting
+    typedef std::list<OpenZWave::ValueID> valueList_t;
 
     /**
      * zwNode contructor.
@@ -90,15 +104,38 @@ namespace upm {
      */
     void dumpNode(bool all=false);
 
+    /**
+     * Clear the VID map, sort the list containing registered VID's,
+     * and re-create the VID map.  The goal is to ensure that the Map
+     * is always sorted in acsending order by VID.
+     */
+    void updateVIDMap();
+
+    /**
+     * When enabled, updateVIDMap() will be called every time a new
+     * VID is inserted or removed.  This is disabled by default for
+     * performance reasons during init() time.  Once the driver is
+     * initialized, then this option is, by default  enabled so that
+     * the VID map is always kept in a sorted order.
+     *
+     * @param enable true to enable, false to disable.
+     */
+    void setAutoUpdate(bool enable)
+    {
+      m_autoUpdate = enable;
+    }
+
   protected:
 
   private:
+    bool m_autoUpdate;
     uint32_t m_homeId;
     uint8_t m_nodeId;
 
     valueMap_t m_values;
+    valueList_t m_list;
 
-    // we increment this index for every ValueID we add
+    // we increment this index for every ValueID we add into the map
     unsigned int m_vindex;
   };