Created descriptor for analog-value objects,

- writable Relinquish_Default and Units
- added properties required for intrinsic reporting.

Intrinsic reporting for analog-value. First commit. 
Not everything finished (inter alia Time_Delay, Event_Time_Stamps, ACK_Required doesn't work now).

Initialize all objects in Device_Init function.
Added function to read current time.
Defined enum BACNET_LIMIT_ENABLE.
Started cache address.

bacnet-stack/demo/object/nc.h

@@ -25,17 +25,24 @@
 #ifndef NC_H
 #define NC_H
 
+#include "event.h"
+
 
 #ifdef __cplusplus
 extern "C" {
 #endif /* __cplusplus */
 
 
-#define NC_MAX_RECIPIENTS 10
+#define NC_RESCAN_RECIPIENTS_SECS   60
 
-#define RECIPIENT_TYPE_NOTINITIALIZED   0
-#define RECIPIENT_TYPE_DEVICE           1
-#define RECIPIENT_TYPE_ADDRESS          2
+/* max "length" of recipient_list */
+#define NC_MAX_RECIPIENTS 10
+/* Recipient types */
+typedef enum {
+    RECIPIENT_TYPE_NOTINITIALIZED = 0,
+    RECIPIENT_TYPE_DEVICE  = 1,
+    RECIPIENT_TYPE_ADDRESS = 2
+} NC_RECIPIENT_TYPE;
 
 
 /* BACnetRecipient sructuer*/
@@ -97,6 +104,11 @@ typedef struct Notification_Class_info {
     bool Notification_Class_Write_Property(
             BACNET_WRITE_PROPERTY_DATA * wp_data);
 
+    void Notification_Class_common_reporting_function(
+            BACNET_EVENT_NOTIFICATION_DATA * event_data);
+
+    void Notification_Class_find_recipient(void);
+
 
 #ifdef __cplusplus
 }