VB6.0串口操作
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VB6.0串口操作
职业2010-12-22 11:30:58 阅读60 评论0 字号:大中小订阅
一直想通过计算机人机界面来控制单片机,感觉用软件控制硬件,即计算机控制是一件比较有意思的事情。
计算机与单片机的连接,是通过串口来实现的。如何实现,我想应该明白VB怎样来操作串口,实现VB
操作串口,就可以把单片机串口线接入计算机,从而实现真正的计算机控制单片机。
这其他是别人早已实现了的,我因为是刚接触,就写下来留作纪念吧。。。
开发软件:Visual Basic 6.0企业版(VB6)
新建一个工程:标准EXE。
接下来做Form界面。
代码:
Private Sub Combo1_Click()
If MSComm1.PortOpen = True Then '如果串口打开先关闭后再进行其他操作
MSComm1.PortOpen = False
End If
mPort = Combo1.ListIndex + 1
End Sub
Private Sub Command1_Click()
Dim Temp(0) As Byte
Dim strBuff As String
If Option3.Value = True Then '如果显示16进制发送则进行16进制处理,这里只发送一个Temp(0) = "&H" & Text1
MSComm1.Output = Temp '发送一个16进制
Else
strBuff = Text1
End If
If MSComm1.PortOpen = False Then
MsgBox "请打开串口"
End If
On Error GoTo uerror
MSComm1.Output = strBuff
uerror: End Sub
Private Sub Command2_Click()
On Error GoTo uerror '发现错误跳转到错误处理
If Command2.Caption = "关闭串口" Then
MSComm1.PortOpen = False
Command2.Caption = "打开串口" '按钮文字改变
Shape1.FillColor = &HFFFFC0 '灯颜色改变Else
MSComm1.PortOpen = True
Command2.Caption = "关闭串口"
Shape1.FillColor = &HFF
End If
Exit Sub
uerror:
msg$ = "无效端口号" '错误显示
Title$ = "串口调试助手"
x = MsgBox(msg$, 48, Title$) '48标示显示警告图标
End Sub
Private Sub Command3_Click()
Text2.Text = ""
End Sub
Private Sub Command4_Click()
Text1.Text = ""
End Sub
Private Sub Form_Load()
If MSComm1.PortOpen = True Then
MSComm1.PortOpen = False
Else
End If
Combo1.AddItem "COM1"
Combo1.AddItem "COM2"
Combo1.AddItem "COM3"
Combo1.AddItem "COM4"
Combo1.AddItem "COM5"
Combo1.AddItem "COM6"
Combo1.AddItem "COM7"
Combo1.AddItem "COM8"
Combo1.AddItem "COM9"
Combo1.AddItem "COM10"
Combo1.AddItem "COM11"
Combo1.AddItem "COM12"
Combo1.AddItem "COM13"
Combo1.AddItem "COM14"
Combo1.AddItem "COM15"
Combo1.AddItem "COM16"
Combo1.ListIndex = 0
mPort = Combo1.ListIndex + 1 MSComm1.Settings = "9600,n,8,1"
Command2.Caption = "打开串口"
Shape1.FillColor = &HFFFFC0
Option2.Value = True
Option4.Value = True
Combo2.AddItem "256000"
Combo2.AddItem "128000"
Combo2.AddItem "115200"
Combo2.AddItem "57600"
Combo2.AddItem "38400"
Combo2.AddItem "28800"
Combo2.AddItem "19200"
'Combo2.AddItem "14400"
'Combo2.AddItem "12800"
'Combo2.AddItem "11520"
Combo2.AddItem "9600"
Combo2.AddItem "4800"
Combo2.AddItem "2400"
Combo2.AddItem "1200"
Combo2.AddItem "600"
Combo3.AddItem "无None"
Combo3.AddItem "奇Odd"
Combo3.AddItem "偶Even"
Combo4.AddItem "4"
Combo4.AddItem "5"
Combo4.AddItem "6"