form1.frm

与单片机串口通信程序

VERSION 5.00
Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MSCOMM32.OCX"
Begin VB.Form Form1 
   Caption         =   "于宇宙计算机控制系统"
   ClientHeight    =   5925
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   8265
   LinkTopic       =   "Form1"
   ScaleHeight     =   5925
   ScaleWidth      =   8265
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command3 
      Caption         =   "退出控制系统"
      Height          =   615
      Left            =   3240
      TabIndex        =   4
      Top             =   4680
      Width           =   1335
   End
   Begin VB.CommandButton Command2 
      Caption         =   "发送控制"
      Height          =   735
      Left            =   1920
      TabIndex        =   3
      Top             =   3120
      Width           =   1095
   End
   Begin VB.CommandButton Command1 
      Caption         =   "查看控制结果"
      Height          =   735
      Left            =   4920
      TabIndex        =   2
      Top             =   3120
      Width           =   1335
   End
   Begin VB.TextBox txtRecelve 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   14.25
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H000000FF&
      Height          =   465
      Left            =   4800
      TabIndex        =   1
      Top             =   2280
      Width           =   1815
   End
   Begin VB.TextBox txtsend 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   14.25
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   1800
      TabIndex        =   0
      Top             =   2280
      Width           =   1335
   End
   Begin MSCommLib.MSComm MSComm1 
      Left            =   240
      Top             =   4680
      _ExtentX        =   1005
      _ExtentY        =   1005
      _Version        =   393216
      DTREnable       =   0   'False
   End
   Begin VB.Label Label2 
      Caption         =   "控制结果为："
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   4800
      TabIndex        =   6
      Top             =   1920
      Width           =   1455
   End
   Begin VB.Label Label1 
      Caption         =   "请输入控制："
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   1680
      TabIndex        =   5
      Top             =   1920
      Width           =   1455
   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()
Dim buf$
buf = Trim(MSComm1.Input)


      If Len(buf) = 0 Then
                       txtRecelve.Text = "请重新输入控制"
      End If


      If Left(buf, 1) = "1" Then
                                     txtRecelve.Text = "1 号灯亮"
      End If
      If Left(buf, 1) = "2" Then
                                    txtRecelve.Text = "2 号灯亮"
      End If
      
      If Left(buf, 1) = "3" Then
                                    txtRecelve.Text = "3 号灯亮"
      End If
      If Left(buf, 1) = "4" Then
                                    txtRecelve.Text = "4 号灯亮"
      End If
      If Left(buf, 1) = "5" Then
                                    txtRecelve.Text = "5 号灯亮"
      End If
      If Left(buf, 1) = "6" Then
                                    txtRecelve.Text = "6 号灯亮"
      End If
      If Left(buf, 1) = "7" Then
                                    txtRecelve.Text = "7 号灯亮"
      End If
      If Left(buf, 1) = "8" Then
                                    txtRecelve.Text = "8 号灯亮"
      End If
      
      txtsend.Text = ""
      txtsend.SetFocus
End Sub

Private Sub Command2_Click()
Command1.SetFocus
MSComm1.Output = Trim(txtsend.Text)
End Sub

Private Sub Command3_Click()
MSComm1.PortOpen = False
End

End Sub

Private Sub Form_Load()
MSComm1.PortOpen = True
End Sub

Private Sub txtsend_Change()
Command2.SetFocus
End Sub