myvtm/Module/mod_gpio/Gpio.xml

<?xml version="1.0" encoding="gb2312" ?>
<entity name="Gpio">
	<class name="GpioService" overlap="true" exclusive="false">
		<twoway name="GetDevInfo" overlap="true" method_id="65535">
			<req>
			</req>
			<res>
				<param name="type" type="string" />
				<param name="model" type="string" />
				<param name="version" type="string" />
				<param name="state" type="int" />
			</res>
		</twoway>
		<oneway name="Exit" overlap="true">			
		</oneway>		
	</class>
</entity>