Removed the object-table function macros from each demo object header file since it was very difficult to maintain when new functions are added. Added device-client.c file which is a small device object just for simple clients. Updated most Makefiles of client demo applications to utilize device-client.c file.

Added two device object table functions for COV support.
Corrected demo COV handler interaction with TSM, COV flags, and multiple subscriptions for the same object.

bacnet-stack/demo/server/main.c

@@ -118,6 +118,9 @@ static void Init_Service_Handlers(
     /* handle communication so we can shutup when asked */
     apdu_set_confirmed_handler(SERVICE_CONFIRMED_DEVICE_COMMUNICATION_CONTROL,
         handler_device_communication_control);
+    /* handle the data coming back from private requests */
+    apdu_set_unconfirmed_handler(SERVICE_UNCONFIRMED_PRIVATE_TRANSFER,
+        handler_unconfirmed_private_transfer);
 #if defined(INTRINSIC_REPORTING)
     apdu_set_confirmed_handler(SERVICE_CONFIRMED_ACKNOWLEDGE_ALARM,
         handler_alarm_ack);
@@ -202,15 +205,16 @@ int main(
             dlenv_maintenance_timer(elapsed_seconds);
             Load_Control_State_Machine_Handler();
             elapsed_milliseconds = elapsed_seconds * 1000;
-            if (dcc_communication_enabled()) {
-                handler_cov_task(elapsed_seconds);
-            }
+            handler_cov_timer_seconds(elapsed_seconds);
             tsm_timer_milliseconds(elapsed_milliseconds);
             trend_log_timer(elapsed_seconds);
 #if defined(INTRINSIC_REPORTING)
             Device_local_reporting();
 #endif
         }
+        if (dcc_communication_enabled()) {
+            handler_cov_task();
+        }
         /* scan cache address */
         address_binding_tmr += elapsed_seconds;
         if (address_binding_tmr >= 60) {