Bugfix/network port object bdt required (#184)

* Added BDT encoding to network port object.

* Added BDT encoding rules from clause 21

* Added FDT encoding to network port object.

* added more unit tests for BVLC

* Fix network port and device object unit tests

* fix router build for bvlc dependencies

* fix router build for bvlc dependencies

* fix network port MSTP compile

Co-authored-by: Steve Karg <skarg@users.sourceforge.net>
Co-authored-by: Steve Karg <steve.karg@legrand.us>

src/bacnet/basic/bbmd/h_bbmd.c

@@ -1257,6 +1257,15 @@ void bvlc_set_function_code(uint8_t function_code)
 }
 
 #if BBMD_ENABLED
+/**
+ * @brief Get handle to foreign device table (FDT).
+ * @return pointer to first entry of foreign device table
+ */
+BACNET_IP_FOREIGN_DEVICE_TABLE_ENTRY *bvlc_fdt_list(void)
+{
+    return &FD_Table[0];
+}
+
 /**
  * @brief Get handle to broadcast distribution table (BDT).
  * @return pointer to first entry of broadcast distribution table

src/bacnet/basic/bbmd/h_bbmd.h

@@ -113,6 +113,9 @@ BACNET_IP_BROADCAST_DISTRIBUTION_TABLE_ENTRY *bvlc_bdt_list(void);
 BACNET_STACK_EXPORT
 void bvlc_bdt_list_clear(void);
 
+/* Get foreign device table list */
+BACNET_IP_FOREIGN_DEVICE_TABLE_ENTRY *bvlc_fdt_list(void);
+
 /* Backup broadcast distribution table to a file.
  * Filename is the BBMD_BACKUP_FILE constant
  */