form1.frm

基于mscomm串口通迅的通迅源码

VERSION 5.00
Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MSCOMM32.OCX"
Object = "{F9043C88-F6F2-101A-A3C9-08002B2F49FB}#1.2#0"; "COMDLG32.OCX"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   5250
   ClientLeft      =   60
   ClientTop       =   375
   ClientWidth     =   5700
   LinkTopic       =   "Form1"
   ScaleHeight     =   5250
   ScaleWidth      =   5700
   StartUpPosition =   3  '窗口缺省
   Begin VB.Timer Timer1 
      Interval        =   300
      Left            =   4080
      Top             =   4320
   End
   Begin VB.CommandButton Command5 
      Caption         =   "Command5"
      Height          =   495
      Left            =   4200
      TabIndex        =   6
      Top             =   1920
      Width           =   1335
   End
   Begin MSComDlg.CommonDialog CmdLg 
      Left            =   5040
      Top             =   4440
      _ExtentX        =   847
      _ExtentY        =   847
      _Version        =   393216
   End
   Begin VB.TextBox Text2 
      Height          =   2415
      Left            =   120
      MultiLine       =   -1  'True
      ScrollBars      =   2  'Vertical
      TabIndex        =   5
      Top             =   120
      Width           =   3975
   End
   Begin VB.CommandButton Command4 
      Caption         =   "发送"
      Height          =   495
      Left            =   4200
      TabIndex        =   4
      Top             =   120
      Width           =   1335
   End
   Begin VB.CommandButton Command3 
      Caption         =   "打开串口"
      Height          =   495
      Left            =   4200
      TabIndex        =   3
      Top             =   1020
      Width           =   1335
   End
   Begin VB.CommandButton Command2 
      Caption         =   "关闭串口"
      Height          =   495
      Left            =   4200
      TabIndex        =   2
      Top             =   3720
      Width           =   1335
   End
   Begin VB.TextBox Text1 
      Height          =   2415
      Left            =   120
      MultiLine       =   -1  'True
      ScrollBars      =   2  'Vertical
      TabIndex        =   1
      Top             =   2760
      Width           =   3975
   End
   Begin VB.CommandButton Command1 
      Caption         =   "读取文件"
      Height          =   495
      Left            =   4200
      TabIndex        =   0
      Top             =   2820
      Width           =   1335
   End
   Begin MSCommLib.MSComm MSComm 
      Left            =   4440
      Top             =   4440
      _ExtentX        =   1005
      _ExtentY        =   1005
      _Version        =   393216
      DTREnable       =   -1  'True
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False

Private Sub Command1_Click()

On Error Resume Next

Dim sdat As Integer
Dim rdat As String
CmdLg.ShowOpen
If CmdLg.FileName = "" Then Exit Sub
Open CmdLg.FileName For Binary As #1
While Not EOF(1)

Line Input #1, rdat

rdat = Int(rdat)
sdat = sdat & rdat
If Text2.Text = "" Then
    Text2.Text = rdat
Else
    Text2.Text = Text2.Text & vbCrLf & rdat
End If

Wend
Close #1





End Sub

Private Sub Command2_Click()

If MSComm.PortOpen = False Then
    MsgBox "设备已关闭", vbInformation + vbOKOnly, "警告"
    Exit Sub
Else
    MSComm.PortOpen = False
End If

End Sub

Private Sub Command3_Click()

If MSComm.PortOpen = True Then
    MsgBox "设备已打开", vbInformation + vbOKOnly, "警告"
    Exit Sub
Else
    MSComm.PortOpen = True
End If

End Sub

Private Sub Command4_Click()

If MSComm.PortOpen = True Then
    MSComm.Output = Text2.Text
Else
    MsgBox "串口未打开", vbInformation + vbOKOnly, "警告"
End If

End Sub

Private Sub Form_Load()

MSComm.CommPort = 1
MSComm.Settings = "19200,N,8,1"
MSComm.InputLen = 0
MSComm.PortOpen = True


End Sub

Private Sub Timer1_Timer()

On Error Resume Next
Dim a As Integer

If MSComm.PortOpen = True Then

a = MSComm.Input
If a = "" Then Exit Sub

If Text1.Text = "" Then
    Text1.Text = Hex(a)
Else
    Text1.Text = Text1.Text & vbCrLf & Hex(a)

End If

Else
    'MsgBox "串口未打开", vbInformation + vbOKOnly, "警告"
End If


End Sub