Corrected bug in ATmega168 demo in the RS-485 driver. Also updated the IAR project for Embedded workbench 5.10. Stats:

IAR Atmel AVR C/C++ Compiler V5.10A/W32 
10191 bytes of CODE memory (+36 range fill) 
  775 bytes of DATA memory (+24 absolute) 

avr-gcc (GCC) 4.2.2 (WinAVR 20071221rc1)
Program:   12052 bytes (73.6% Full)
Data:        481 bytes (47.0% Full)

bacnet-stack/demo/object/av.c

@@ -34,8 +34,7 @@
 #include "bacapp.h"
 #include "config.h"     /* the custom stuff */
 #include "wp.h"
-
-#define MAX_ANALOG_VALUES 4
+#include "av.h"
 
 /* we choose to have a NULL level in our system represented by */
 /* a particular value.  When the priorities are not in use, they */