arduino uno Bacnet mstp

Need Simple arduino ide code for arduino uno with rs485 chip for bacnet mstp
object need is
-ai1>read only>room temp>any pin free
-av1>r/w>room setpoint
-av2 BaudRate (1= 9600 2=19200 3=38400 4=76800) default=4
-av3 DeviceInstance (1 to 4194304) default=mac
-av4 NetworkNumber (1 to 65534) default= 153
-av5 MacAdress (1 to 99) default=10
-bv1>r/w>valve relay>any pin free
-any other bacnet mandatory object ie: devices