Configuración de parámetros de programación C# USBXpress SI_Read()
[DllImport("SiUSBXp.dll", CharSet = CharSet.Ansi)]
public static extern int SI_Read
(UInt32 cyHandle,
ref Byte[] lpBuffer,
Int32 dwBytesToRead,
ref Int32 lpdwBytesReturned,
Int32 lpOverlapped