Added comments to create Doxygen Modules for some of the DM BIBBs (DCC, Who-Is, RD) so far.

bacnet-stack/demo/handler/h_iam.c

@@ -34,6 +34,13 @@
 
 /** @file h_iam.c  Handles I-Am requests. */
 
+/** Handler for I-Am responses.
+ * Will add the responder to our cache, or update its binding.
+ * @ingroup DMDDB
+ * @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_am_add(
     uint8_t * service_request,
     uint16_t service_len,
@@ -68,6 +75,14 @@ void handler_i_am_add(
     return;
 }
 
+/** Handler for I-Am responses (older binding-update-only version).
+ * Will update the responder's binding, but if already in our cache.
+ * @note This handler is deprecated, in favor of handler_i_am_add(). 
+ * 
+ * @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_am_bind(
     uint8_t * service_request,
     uint16_t service_len,