串口试验.frm

能够正常进行串口数据的收发并显示。欢迎大家进行完善

VERSION 5.00
Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MSCOMM32.OCX"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   11070
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   15840
   LinkTopic       =   "Form1"
   ScaleHeight     =   11070
   ScaleWidth      =   15840
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox Text4 
      Height          =   1575
      Left            =   240
      MultiLine       =   -1  'True
      TabIndex        =   21
      Text            =   "串口试验.frx":0000
      Top             =   8040
      Width           =   4815
   End
   Begin VB.CheckBox Check1 
      Caption         =   "定时发送"
      Height          =   375
      Left            =   240
      TabIndex        =   20
      Top             =   5640
      Width           =   1095
   End
   Begin VB.Timer Timer1 
      Left            =   840
      Top             =   240
   End
   Begin VB.TextBox Text3 
      Height          =   375
      Left            =   1440
      TabIndex        =   18
      Text            =   "100"
      Top             =   5640
      Width           =   1095
   End
   Begin VB.CommandButton Command4 
      Caption         =   "清空"
      Height          =   495
      Left            =   3360
      TabIndex        =   16
      Top             =   7080
      Width           =   1095
   End
   Begin VB.ComboBox Combo5 
      Height          =   300
      ItemData        =   "串口试验.frx":006E
      Left            =   1800
      List            =   "串口试验.frx":0081
      TabIndex        =   10
      Text            =   "N"
      Top             =   3360
      Width           =   1095
   End
   Begin VB.ComboBox Combo4 
      Height          =   300
      ItemData        =   "串口试验.frx":00A3
      Left            =   1800
      List            =   "串口试验.frx":00B0
      TabIndex        =   9
      Text            =   "1"
      Top             =   2880
      Width           =   1095
   End
   Begin VB.ComboBox Combo3 
      Height          =   300
      ItemData        =   "串口试验.frx":00BF
      Left            =   1800
      List            =   "串口试验.frx":00CF
      TabIndex        =   8
      Text            =   "8"
      Top             =   2400
      Width           =   1095
   End
   Begin VB.ComboBox Combo2 
      Height          =   300
      ItemData        =   "串口试验.frx":00DF
      Left            =   1800
      List            =   "串口试验.frx":00F8
      TabIndex        =   7
      Text            =   "4800"
      Top             =   1920
      Width           =   1095
   End
   Begin VB.ComboBox Combo1 
      Height          =   300
      ItemData        =   "串口试验.frx":012B
      Left            =   1800
      List            =   "串口试验.frx":0147
      TabIndex        =   6
      Text            =   "COM1"
      Top             =   1440
      Width           =   1095
   End
   Begin VB.CommandButton Command3 
      Caption         =   "清空显示"
      Height          =   495
      Left            =   6480
      TabIndex        =   5
      Top             =   8760
      Width           =   975
   End
   Begin MSCommLib.MSComm MSComm1 
      Left            =   120
      Top             =   120
      _ExtentX        =   1005
      _ExtentY        =   1005
      _Version        =   393216
      DTREnable       =   -1  'True
   End
   Begin VB.CommandButton Command2 
      Caption         =   "发送数据"
      Height          =   495
      Left            =   240
      TabIndex        =   3
      Top             =   7080
      Width           =   975
   End
   Begin VB.TextBox Text2 
      Height          =   8175
      Left            =   6480
      MultiLine       =   -1  'True
      TabIndex        =   2
      Top             =   600
      Width           =   9375
   End
   Begin VB.TextBox Text1 
      Height          =   855
      Left            =   240
      MultiLine       =   -1  'True
      TabIndex        =   1
      Top             =   6120
      Width           =   4215
   End
   Begin VB.CommandButton Command1 
      Caption         =   "打开串口"
      Height          =   375
      Left            =   3240
      TabIndex        =   0
      Top             =   1440
      Width           =   1335
   End
   Begin VB.Label Label8 
      Caption         =   "ms"
      Height          =   255
      Left            =   2880
      TabIndex        =   19
      Top             =   5760
      Width           =   375
   End
   Begin VB.Label Label7 
      BackColor       =   &H00004080&
      Caption         =   "采用16进制发送与接收显示"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   24
         Charset         =   134
         Weight          =   400
         Underline       =   -1  'True
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00FFFF00&
      Height          =   495
      Left            =   240
      TabIndex        =   17
      Top             =   4920
      Width           =   5895
   End
   Begin VB.Label Label6 
      Caption         =   "校验位"
      Height          =   255
      Left            =   1080
      TabIndex        =   15
      Top             =   3360
      Width           =   615
   End
   Begin VB.Label Label5 
      Caption         =   "停止位"
      Height          =   255
      Left            =   1080
      TabIndex        =   14
      Top             =   2880
      Width           =   615
   End
   Begin VB.Label Label4 
      Caption         =   "数据位"
      Height          =   255
      Left            =   1080
      TabIndex        =   13
      Top             =   2400
      Width           =   615
   End
   Begin VB.Label Label3 
      Caption         =   "波特率"
      Height          =   255
      Left            =   1080
      TabIndex        =   12
      Top             =   1920
      Width           =   615
   End
   Begin VB.Label Label2 
      Caption         =   "端口"
      Height          =   255
      Left            =   1200
      TabIndex        =   11
      Top             =   1440
      Width           =   495
   End
   Begin VB.Label Label1 
      Caption         =   "接收窗口"
      Height          =   375
      Left            =   6480
      TabIndex        =   4
      Top             =   240
      Width           =   2055
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim str As String
Dim Buffer As Variant
'Dim Arr() As Byte
Dim i As Byte
Dim ccb As Byte
Dim textlast As String
Dim exx As Byte
'Dim bit As String

Private Sub Check1_Click()
If Check1.Value = 1 Then
Timer1.Interval = Text3.Text
Timer1.Enabled = True
Else
Timer1.Enabled = False
End If
End Sub

Private Sub Command1_Click()
If MSComm1.PortOpen = False Then
      MSComm1.CommPort = Combo1.ListIndex + 1
      'bit = Combo2.Text
      MSComm1.Settings = Combo2.Text + "," + Left(Combo5.Text, 1) + "," + Combo3.Text + "," + Combo4.Text
      'MSComm1.PortOpen = True
      On Error GoTo Errdo
      MSComm1.PortOpen = True
      Command1.Caption = "关闭"
      Combo1.Enabled = False
      Combo2.Enabled = False
      Combo3.Enabled = False
      Combo4.Enabled = False
      Combo5.Enabled = False
      Command2.Enabled = True
   Else
   MSComm1.PortOpen = False
   Command1.Caption = "打开"
   Combo1.Enabled = True
   Combo2.Enabled = True
   Combo3.Enabled = True
   Combo4.Enabled = True
   Combo5.Enabled = True
   Command2.Enabled = False
End If
Errdo:
      If Err.Number = 8002 Then
      MsgBox "串口不存在！"
      ElseIf Err.Number = 8005 Then
      MsgBox "串口已打开！"
      End If
Text2.Text = MSComm1.Settings
End Sub


Private Sub Command2_Click()
Dim temp1 As String, temp2 As String, temp3 As Variant
Dim i As Byte
Dim ByteArray() As Byte  '定义动态数组
ReDim ByteArray(0) '重定义数组大小
temp1 = Text1.Text
If Len(Text1.Text) Mod 3 = 0 And Len(Text1.Text) <> 0 Then
For i = 1 To Len(Text1.Text) Step 3
temp2 = Left(temp1, 1)
If Asc(temp2) <= 57 And Asc(temp2) >= 48 Then
temp3 = Asc(temp2) - 48
ElseIf Asc(temp2) <= 70 And Asc(temp2) >= 65 Then
temp3 = Asc(temp2) - 55
Else
temp3 = Asc(temp2) - 87
End If
temp2 = Mid(temp1, 2, 1)
If Asc(temp2) <= 57 And Asc(temp2) >= 48 Then
temp4 = Asc(temp2) - 48
ElseIf Asc(temp2) <= 70 And Asc(temp2) >= 65 Then
temp4 = Asc(temp2) - 55
Else
temp4 = Asc(temp2) - 87
End If
temp3 = temp3 * 16 + temp4
ByteArray(0) = temp3
'ByteArray(1) = temp3
MSComm1.Output = ByteArray 'Chr$(temp3)
temp1 = Right(temp1, Len(temp1) - 3)
Next i
Else
MsgBox ("请输入完整的16进制数")
End If
End Sub

Private Sub Command3_Click()
Text2.Text = ""
End Sub

Private Sub Command4_Click()
Text1.Text = ""
ccb = 0
End Sub

Private Sub Form_Load()
'MSComm1.CommPort = 5
'MSComm1.Settings = "9600,N,8,1"
Dim telist As String
Open "d:\testfile.txt" For Input As #1
Line Input #1, telist

Combo1.ListIndex = Val(Mid(telist, 1, 1)) 'itop
Combo2.ListIndex = Val(Mid(telist, 3, 1)) 'iTop
Combo3.ListIndex = Val(Mid(telist, 5, 1)) 'iTop
Combo4.ListIndex = Val(Mid(telist, 7, 1)) 'iTop
Combo5.ListIndex = Val(Mid(telist, 9, 1)) 'iTop
MSComm1.InBufferCount = 0
MSComm1.OutBufferCount = 0
MSComm1.OutBufferSize = 40
MSComm1.InputLen = 0
MSComm1.InputMode = comInputModeBinary
MSComm1.RThreshold = 1
textlast = Text1.Text
Command2.Enabled = False
End Sub

Private Sub Form_Unload(Cancel As Integer)
Set fs = CreateObject("Scripting.FilesystemObject")
Set xxx = fs.createtextfile("d:\testfile.txt", True) 'curdir
xxx.writeline (Combo1.ListIndex & " " & Combo2.ListIndex & " " & Combo3.ListIndex & " " & Combo4.ListIndex & " " & Combo5.ListIndex)
xxx.Close
End Sub

Private Sub MSComm1_OnComm()
Dim intInputLen As Integer
Dim n As Integer
Dim Arr() As Byte

intInputLen = MSComm1.InBufferCount
Arr = MSComm1.Input
'Text1.Text = intInputLen
'Text1.Text = intInputLen
'Text1.Text = intInputLen
For n = 0 To intInputLen - 1
If Arr(n) <= 9 Then
Text2.Text = Text2.Text + "0" + Hex(Arr(n)) + " "
Else
Text2.Text = Text2.Text + Hex(Arr(n)) + " "
End If
Next n
End Sub


Private Sub Text1_Change()
If ccb = 2 Then
ccb = 0
Text1.Text = Text1.Text + " "
textlast = Text1.Text
End If
If exx = 1 Then
exx = 0
Text1.Text = textlast
End If
Text1.SelStart = Len(Text1.Text)
Text1.SetFocus
'Dim ccc As String
''Text1.SelStart = Len(Text1.Text)
'Text1.SetFocus
'ccc = Right(Text1.Text, 1)
'Text2.Text = Text2.Text + ccc
'If ((48 <= Asc(ccc)) & (Asc(ccc) <= 57)) Then       '& (65 <= Asc(ccc) <= 70) & (97 <= Asc(ccc) <= 102)
'ccb = ccb + 1
'If ccb = 2 Then
'Text1.Text = Text1.Text + " "
'ccb = 0
'End If
'Else
'MsgBox ("请输入正确的字符")
'End If
End Sub

Private Sub Text1_KeyPress(KeyAscii As Integer)
If (KeyAscii <= 57 And KeyAscii >= 48) Or (KeyAscii >= 65 And KeyAscii <= 70) Or (97 <= KeyAscii And KeyAscii <= 102) Then
ccb = ccb + 1
'Text2.Text = ccb
'If ccb = 3 Then
'Text1.Text = Text1.Text + " "
'ccb = 0
'Text1.SelStart = Len(Text1.Text)
'Text1.SetFocus
'End If
Else
MsgBox ("请输入0-9的数字或A-F或a-f的字符")
exx = 1
End If
End Sub

Private Sub Timer1_Timer()
Dim temp1 As String, temp2 As String, temp3 As Variant
Dim i As Byte
Dim ByteArray() As Byte  '定义动态数组
ReDim ByteArray(0) '重定义数组大小
temp1 = Text1.Text
If Len(Text1.Text) Mod 3 = 0 Then
For i = 1 To Len(Text1.Text) Step 3
temp2 = Left(temp1, 1)
If Asc(temp2) <= 57 And Asc(temp2) >= 48 Then
temp3 = Asc(temp2) - 48
ElseIf Asc(temp2) <= 70 And Asc(temp2) >= 65 Then
temp3 = Asc(temp2) - 55
Else
temp3 = Asc(temp2) - 87
End If
temp2 = Mid(temp1, 2, 1)
If Asc(temp2) <= 57 And Asc(temp2) >= 48 Then
temp4 = Asc(temp2) - 48
ElseIf Asc(temp2) <= 70 And Asc(temp2) >= 65 Then
temp4 = Asc(temp2) - 55
Else
temp4 = Asc(temp2) - 87
End If
temp3 = temp3 * 16 + temp4
ByteArray(0) = temp3
'ByteArray(1) = temp3
MSComm1.Output = ByteArray 'Chr$(temp3)
temp1 = Right(temp1, Len(temp1) - 3)
Next i
Else
MsgBox ("请输入完整的16进制数")
Timer1.Enabled = False
Option1.Value = False
End If
End Sub