Changed the API to pass the NPDU data down through the datalink layer in order to make the dlmstp work since it needs data-expecting-reply information. Of course, this affected all the demos, all the unit tests, and most of the demo handlers. Corrected some TSM leaks in confirmed messages. Refactored the AtomicReadFile and AtomicWriteFile demos by moving the Send_ functions to the demo/handlers directory and using the s_whois common handler. Added some common defines for the BACnet version and revision since several modules were using the info. Hopefully I didn't break too many things.

bacnet-stack/config.h

@@ -11,8 +11,8 @@
 /* This is used in constructing messages and to tell others our limits */
 /* 50 is the minimum; adjust to your memory and physical layer constraints */
 /* Lon=206, MS/TP=480, ARCNET=480, Ethernet=1476 */
-#define MAX_APDU 50
-/* #define MAX_APDU 480 */
+/* #define MAX_APDU 50 */
+#define MAX_APDU 480
 /* #define MAX_APDU 1476 */
 
 /* for confirmed messages, this is the number of transactions */
@@ -20,13 +20,13 @@
 /* Configure to zero if you don't want any confirmed messages */
 /* Configure from 1..255 for number of outstanding confirmed */
 /* requests available. */
-#define MAX_TSM_TRANSACTIONS 1
+#define MAX_TSM_TRANSACTIONS 255
 
 /* The address cache is used for binding to BACnet devices */
 /* The number of entries corresponds to the number of */
 /* devices that might respond to an I-Am on the network. */
 /* If your device is a simple server and does not need to bind, */
 /* then you don't need to use this. */
-#define MAX_ADDRESS_CACHE 2
+#define MAX_ADDRESS_CACHE 255
 
 #endif