Retrieves the number of physical serial port by index.
BOOL FtVspcGetPhysicalNum( UINT unIndex, UINT* lpunPortNo );
[in] Index of physical serial port (0 ... unPortsCount - 1). Refer to FtVspcEnumPhysical.
[out] A pointer to the variable where the number of physical serial port is returned (e.g 1 means COM1, 5 means COM5 and so on). If the number is -1, it means that the port name differs from "COMx" and the name should be retrieved by FtVspcGetPhysical.
|ftvspcErrorFailed||1||The operation has not been completed.|
|ftvspcErrorNoMoreItems||102||There is no item (possible reason: index is too high).|
You must call FtVspcEnumPhysical before calling this function.