Returns the name of the motor driver that loaded this device. See the list
        of [supported devices] for a list of drivers.

def driver_name(self):
        """
        Returns the name of the motor driver that loaded this device. See the list
        of [supported devices] for a list of drivers.
        """
        self._driver_name, value = self.get_attr_string(self._driver_name, 'driver_name')
        return value