private void SetMode(UltraSonicCommand command)
 {
     WriteRegister((byte)UltraSonicRegister.Command, (byte)command);
     System.Threading.Thread.Sleep(100);
 }
		private void SetMode(UltraSonicCommand command) {
            WriteRegister((byte)UltraSonicRegister.Command, (byte)command);
            System.Threading.Thread.Sleep(100);
        }