从Arduino在Visual Basic中进行串行绘图数据？

Question

我目前正在使用电阻式触摸屏和Arduino Uno进行项目。电阻式触摸屏输出放置在其上的对象的X和Y坐标对。我希望能够使用FastPoint ChartType在Visual Basic中以图形方式连续读取和输出这些内容。我想知道如何通过串行端口同时获取这些X和Y坐标，以便可以在图形中使用它们。我附上了我现在拥有的东西。

Dim comPORT As String
Dim receivedData As String = ""

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    Timer1.Enabled = False
    comPORT = ""
    For Each serial_port As String In My.Computer.Ports.SerialPortNames
        comPort_ComboBox.Items.Add(serial_port)
    Next
End Sub


Private Sub comPort_ComboBox_SelectedIndexChanged(sender As Object, e As EventArgs) Handles comPort_ComboBox.SelectedIndexChanged
    If (comPort_ComboBox.SelectedItem <> "") Then
        comPORT = comPort_ComboBox.SelectedItem
    End If
End Sub


Private Sub connect_BTN_Click(sender As Object, e As EventArgs) Handles connect_BTN.Click
    If (connect_BTN.Text = "Connect") Then
        If (comPORT <> "") Then
            SerialPort1.Close()
            SerialPort1.PortName = comPORT
            SerialPort1.BaudRate = 9600
            SerialPort1.DataBits = 8
            SerialPort1.Parity = Parity.None
            SerialPort1.StopBits = StopBits.One
            SerialPort1.Handshake = Handshake.None
            SerialPort1.Encoding = System.Text.Encoding.Default
            SerialPort1.ReadTimeout = 10000

            SerialPort1.Open()
            connect_BTN.Text = "Dis-connect"
            Timer1.Enabled = True
            Timer_LBL.Text = "Timer: ON"
        Else
            MsgBox("Select a port.")
        End If
    Else
        SerialPort1.Close()
        connect_BTN.Text = "Connect"
        Timer1.Enabled = False
        Timer_LBL.Text = "Timer: OFF"
    End If


End Sub


Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
    receivedData = ReceiveSerialData()
    Output1.Text &= receivedData

End Sub


Function ReceiveSerialData() As String
    Dim Incoming As String
    Try
        Incoming = SerialPort1.ReadExisting()
        If Incoming Is Nothing Then
            Return "N/A" & vbCrLf
        Else
            Return Incoming
        End If
    Catch ex As TimeoutException
        Return "Error: Serial Port read timed out."
    End Try

End Function



Private Sub clear_BTN_Click(sender As Object, e As EventArgs) Handles clear_BTN.Click
    Output1.Text = ""
End Sub