Set the radio address to be used

def set_address(self, address):
        """ Set the radio address to be used"""
        if len(address) != 5:
            raise Exception('Crazyradio: the radio address shall be 5'
                            ' bytes long')
        if address != self.current_address:
            _send_vendor_setup(self.handle, SET_RADIO_ADDRESS, 0, 0, address)
            self.current_address = address