CONTROL PUERTO SERIAL CON VISUAL BASIC.NET

DISEO DEL FORMULARIO

PROPIEDADES

FORMULARIO

COMBOBOX1

COMBOBOX1

BUTTON5

TEXTBOX1

BUTTON1

BUTTON6

TEXTBOX2 BUTTON2

BUTTON3

BUTTON4

BUTTON5

TEXTBOX2

TEXTBOX1

BUTTON1

BUTTON2

BUTTON3

BUTTON6

BUTTON4

CODIGO DE PROGRAMACION

CODIGO FORMULARIO

Imports System.IO.Ports Public Class Form1 Dim envio As Byte() = New Byte(0) {} Dim recibido As String

EVENTOS

Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load CheckForIllegalCrossThreadCalls = False Button6.BackColor = Color.DarkCyan Try ComboBox1.Items.Clear() For Each i As String In My.Computer.Ports.SerialPortNames ComboBox1.Items.Add(i) Next Catch ex As Exception End Try End Sub

Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing If SerialPort1.IsOpen Then SerialPort1.Close() End If End Sub

CODIGO BUTTON5

Doble clic en

Private Sub Button5_Click(sender As System.Object, e As System.EventArgs) Handles Button5.Click Try If Button5.Text = "CONECTAR" Then Button5.Text = "DESCONECTAR" Try With SerialPort1 If .IsOpen Then .Close() End If .PortName = ComboBox1.Text .BaudRate = 9600 .Open() ComboBox1.Enabled = False TextBox2.AppendText("PUERTO " & .PortName & " ABIERTO" & vbCrLf) TextBox2.AppendText("BAUDIOS " & .BaudRate & vbCrLf) End With Catch ex As Exception MsgBox("Error al abrir el puerto serial: " & ex.Message, MsgBoxStyle.Critical) End Try Else If SerialPort1.IsOpen Then SerialPort1.Close() End If Button5.Text = "CONECTAR" ComboBox1.Enabled = True TextBox2.AppendText("PUERTO " & SerialPort1.PortName & " DESCONECTADO" & vbCrLf) End If Catch ex As Exception End Try End Sub

CODIGO BUTTON2

Doble clic en

Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click envio(0) = Asc("a") SerialPort1.Write(envio, 0, envio.Length) End Sub

CODIGO BUTTON3

Doble clic en

Private Sub Button3_Click(sender As System.Object, e As System.EventArgs) Handles Button3.Click envio(0) = Asc("b") SerialPort1.Write(envio, 0, envio.Length) End Sub

CODIGO BUTTON1

Doble clic en

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click envio(0) = Asc(TextBox1.Text) SerialPort1.Write(envio, 0, envio.Length) TextBox2.AppendText(TextBox1.Text & vbCrLf) End Sub

CODIGO BUTTON4

Doble clic en

Private Sub Button4_Click(sender As System.Object, e As System.EventArgs) Handles Button4.Click If SerialPort1.IsOpen Then SerialPort1.Close() End If End End Sub

EVENTO PUERTO SERIAL

Private Sub SerialPort1_DataReceived(sender As Object, e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort1.DataReceived recibido = SerialPort1.ReadExisting Try TextBox2.AppendText(recibido & vbCrLf) If recibido = 1 Then Button2.BackColor = Color.Green Button3.BackColor = Color.Aqua End If If recibido = 2 Then Button3.BackColor = Color.Red Button2.BackColor = Color.Aqua End If If recibido = 3 Then Button6.BackColor = Color.LawnGreen Button6.Text = "PULSADOR PRESIONADO 1" End If If recibido = 4 Then Button6.BackColor = Color.LightSkyBlue Button6.Text = "PULSADOR PRESIONADO 2" End If Catch ex As Exception End Try End Sub