you know how to work with the arduino in slave and uvga in master?
No clue. The Arduino would need to register as a slave with some address, and register a callback for use when the master sent a request/command/data.
The uvga would then send messages to the slave at that address. How it would do that, though, I do not know, nor do I know what those messages would look like or what the reply would need to be, if any.