changed the modules to use the new BACNet string types.

Modified the device object to handle having the string properties changed via WriteProperty service.
Updated the unit tests.
Updated the demo objects.

bacnet-stack/device.h

@@ -45,7 +45,7 @@ extern "C" {
 #endif /* __cplusplus */
 
 uint32_t Device_Object_Instance_Number(void);
-void Device_Set_Object_Instance_Number(uint32_t object_id);
+bool Device_Set_Object_Instance_Number(uint32_t object_id);
 bool Device_Valid_Object_Instance_Number(uint32_t object_id);
 unsigned Device_Object_List_Count(void);
 bool Device_Object_List_Identifier(unsigned array_index,
@@ -56,22 +56,25 @@ BACNET_DEVICE_STATUS Device_System_Status(void);
 void Device_Set_System_Status(BACNET_DEVICE_STATUS status);
 
 const char *Device_Vendor_Name(void);
-void Device_Set_Vendor_Name(const char *name);
+bool Device_Set_Vendor_Name(const char *name, size_t length);
 
 uint16_t Device_Vendor_Identifier(void);
 void Device_Set_Vendor_Identifier(uint16_t vendor_id);
 
 const char *Device_Model_Name(void);
-void Device_Set_Model_Name(const char *name);
+bool Device_Set_Model_Name(const char *name, size_t length);
 
 const char *Device_Firmware_Revision(void);
-void Device_Set_Firmware_Revision(const char *name);
+bool Device_Set_Firmware_Revision(const char *name, size_t length);
 
 const char *Device_Application_Software_Version(void);
-void Device_Set_Application_Software_Version(const char *name);
+bool Device_Set_Application_Software_Version(const char *name, size_t length);
 
 const char *Device_Description(void);
-void Device_Set_Description(const char *name);
+bool Device_Set_Description(const char *name, size_t length);
+
+const char *Device_Location(void);
+bool Device_Set_Location(const char *name, size_t length);
 
 // some stack-centric constant values - no set methods
 uint8_t Device_Protocol_Version(void);