Added comments to create Doxygen sub-Module for DM-DOB BIBB (Who-Has).

bacnet-stack/demo/handler/h_ihave.c

@@ -34,6 +34,12 @@
 
 /** @file h_ihave.c  Handles incoming I-Have messages. */
 
+/** Simple Handler for I-Have responses (just validates response).
+ * @ingroup DMDOB
+ * @param service_request [in] The received message to be handled.
+ * @param service_len [in] Length of the service_request message.
+ * @param src [in] The BACNET_ADDRESS of the message's source.
+ */
 void handler_i_have(
     uint8_t * service_request,
     uint16_t service_len,