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/tsm.h

@@ -38,6 +38,7 @@
 #include <stdint.h>
 #include <stddef.h>
 #include "bacdef.h"
+#include "npdu.h"
 
 /* note: TSM functionality is optional - only needed if we are 
    doing client requests */
@@ -80,9 +81,11 @@ typedef struct BACnet_TSM_Data {
     BACNET_TSM_STATE state;
     /* the address we sent it to */
     BACNET_ADDRESS dest;
-    /* copy of the PDU, should we need to send it again */
-    uint8_t pdu[MAX_PDU];
-    unsigned pdu_len;
+    /* the network layer info */
+    BACNET_NPDU_DATA npdu_data;
+    /* copy of the APDU, should we need to send it again */
+    uint8_t apdu[MAX_PDU];
+    unsigned apdu_len;
 } BACNET_TSM_DATA;
 
 #ifdef __cplusplus
@@ -98,10 +101,12 @@ extern "C" {
     uint8_t tsm_next_free_invokeID(void);
 /* returns the same invoke ID that was given */
     void tsm_set_confirmed_unsegmented_transaction(uint8_t invokeID,
-        BACNET_ADDRESS * dest, uint8_t * pdu, uint16_t pdu_len);
+        BACNET_ADDRESS * dest, BACNET_NPDU_DATA * ndpu_data,
+        uint8_t * apdu, uint16_t apdu_len);
 /* returns true if transaction is found */
     bool tsm_get_transaction_pdu(uint8_t invokeID,
-        BACNET_ADDRESS * dest, uint8_t * pdu, uint16_t * pdu_len);
+        BACNET_ADDRESS * dest, BACNET_NPDU_DATA * ndpu_data,
+        uint8_t * apdu, uint16_t * apdu_len);
 
     bool tsm_invoke_id_free(uint8_t invokeID);