3.1 SDK call Procedure

(1)INIT SDK
NET_CARD_InitEx
(2)realtime callback
NET_CARD_RealTimeDataCallback
(3)boardcast search callback
	NET_CARD_BroadcastSerachDevice
(4)device orperate function
1)open the door
NET_CARD_RemoteOpen
2)close the door 
NET_CARD_RemoteClose
3)time setting
NET_CARD_SetDeviceTime
4) server IP and port setting
NET_CARD_SetServerIPandPort
5) start realtime monitor
NET_CARD_EnableRealTimeMonitor
6) stop realtime monitor
NET_CARD_DisbleRealTimeMonitor

