First attempts with Doxygen

src/main.cpp

@@ -1,12 +1,23 @@
+/**
+ * \brief Entry point
+ * 
+ * Deskcontrol is a simple on/off timer switch inteded for use with an ATX PSU.
+ * The theory of operation is turning on and off power by pulling the control line low/high while 
+ * running of the 5V standby line.
+ * 
+ * Additional features include support for a DHT11 to log the temperature.
+ * \file
+ */
+
 #include "config.h"
 
 #include <Homie.h>
 
 #include <LoggerNode.h>
-LoggerNode LN;
+LoggerNode LN; ///<Instance of the LoggerNode library
 
 #include "DHTesp.h"
-DHTesp dht;
+DHTesp dht; ///< DHT instance 
 
 
 #define OUTPUT_SET(x)  digitalWrite(CONFIG_IO_RELAY, x ? LOW : HIGH)
@@ -15,6 +26,9 @@ unsigned int next_timer_update = 0;
 HomieNode powerNode("power", "Power", "switch");
 HomieNode temperatureNode("temperature", "Temperature", "temperature");
 
+/** Power state handler 
+ * Handes event on the power state MQTT node
+ */
 bool powerStateHandler(const HomieRange& range, const String& value)
 {
     if (value != "on" && value != "off") 
@@ -38,6 +52,9 @@ bool powerStateHandler(const HomieRange& range, const String& value)
     return true;
 }
 
+/**
+ * Handler for events on the powerTimer node
+ */
 bool powerTimerHandler(const HomieRange& range, const String& value)
 {
     int settimer = value.toInt();
@@ -101,6 +118,10 @@ void loopHandleTemperature()
   }
 }
 
+/**
+ * Main event loop
+ * \callgraph
+ */
 void loopHandler()
 {
   loopHandleTimer();