Add common functions for initializing the BACnet Application Value lists. Fixes problems with receiving Unconfirmed COV Notifications with more values to store than the stack has reserved in its value list.

bacnet-stack/demo/handler/h_cov.c

@@ -47,6 +47,10 @@
 #include "device.h"
 #include "handlers.h"
 
+#ifndef MAX_COV_PROPERTIES
+#define MAX_COV_PROPERTIES 2
+#endif
+
 /** @file h_cov.c  Handles Change of Value (COV) services. */
 
 typedef struct BACnet_COV_Address {
@@ -616,7 +620,7 @@ bool handler_cov_fsm(
     uint32_t object_instance = 0;
     bool status = false;
     bool send = false;
-    BACNET_PROPERTY_VALUE value_list[2];
+    BACNET_PROPERTY_VALUE value_list[MAX_COV_PROPERTIES];
     /* states for transmitting */
     static enum {
         COV_STATE_IDLE = 0,
@@ -716,8 +720,8 @@ bool handler_cov_fsm(
                     fprintf(stderr, "COVtask: Sending...\n");
 #endif
                     /* configure the linked list for the two properties */
-                    value_list[0].next = &value_list[1];
-                    value_list[1].next = NULL;
+                    bacapp_property_value_list_init(&value_list[0],
+                        MAX_COV_PROPERTIES);
                     status = Device_Encode_Value_List(object_type,
                         object_instance, &value_list[0]);
                     if (status) {