private async void reset()
        {
            string ReadData;
            bool   WhileLoopSwitch = true;

            //Disable All button
            DisableAllButton();

            //Send a char to bluetooth
            dw.WriteByte(H);
            TestBlock.Text = "Home buttom Click";
            await dw.StoreAsync();



            while (WhileLoopSwitch)
            {
                //wait until recieving a singal from bluetooth
                ReadData = (await readLine(input));

                if (ReadData.Equals("Done"))
                {
                    Signal    = 0;
                    UserSpeed = 0;
                    //Able All button again
                    EnableAllButton();
                    WhileLoopSwitch   = false;
                    Step_TextBox.Text = "" + 1;
                }
            }
        }