The beginning of doxygenation:

As a first step, added an @file description for each file.

bacnet-stack/demo/handler/h_getevent.c

@@ -38,6 +38,8 @@
 #include "event.h"
 #include "getevent.h"
 
+/** @file h_getevent.c  Handles Get Event Information request. */
+
 static get_event_info_function Get_Event_Info[MAX_BACNET_OBJECT_TYPE];
 
 void handler_get_event_information_set(