private fun enable_accelerometer
	do
		accelerometer.asensor = sensormanager.get_default_sensor(new ASensorType.accelerometer)
		if accelerometer.asensor.address_is_null then
				print "Accelerometer sensor unavailable"
		else
				if eventqueue.enable_sensor(accelerometer.asensor) < 0 then print "Accelerometer enabling failed"
			eventqueue.set_event_rate(accelerometer.asensor, accelerometer.event_rate)
		end
	end