1. Before calling the interface, we must open the Liwei door lock management software and click the "Open Interface" button, which will start the Liwei http interface.
    Note: When opening the HTTP interface for the first time, the windows system will ask if network resources are allowed to be used. Please click "Allow to use"

2. The following functions are actually needed functions, other functions can be ignored.
  LV4_SetLift_FloorData;
  LV4_IssueGuestCard;
  LV4_IssueBlankCard;
  LV4_ReadCardID;
  LV4_ReadCardInfo;
  LV4_BeepOk;
  LV4_BeepFailure;
  LV4_BeepAlarm;
  LV4_WriteData;
  LV4_ReadData;
  LV4_WriteKey;
  LV4_GuestCardByName;
  LV4_M1_IssueComplete;
  LV4_M1_CheckCardPlace;
  LV4_BeginSetGuestCardExtData;
  LV4_SetGuestCardExtData;
  LV4_SetGuestCardExtByName; 

3. When making guest cards (in LV4_IssueGuestCard and LV4_GuestCardByName functions)
     3-1. When the "Replacement" option is checked, it means new residence.
     3-2. When the "Replacement" option is not checked, it means to follow in.

4. RoomStructure. LVR files are no longer needed and can be imported