form3.frm

Visual_Basic单片机串口通信

VERSION 5.00
Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MSCOMM32.OCX"
Begin VB.Form Form3 
   Caption         =   "自动发送事件接收 "
   ClientHeight    =   4140
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   7440
   LinkTopic       =   "Form3"
   ScaleHeight     =   4140
   ScaleWidth      =   7440
   StartUpPosition =   3  '窗口缺省
   Begin VB.Timer Timer1 
      Enabled         =   0   'False
      Interval        =   1000
      Left            =   2760
      Top             =   3240
   End
   Begin VB.CommandButton Command1 
      Caption         =   "Start"
      Height          =   495
      Left            =   480
      TabIndex        =   2
      Top             =   3240
      Width           =   1215
   End
   Begin VB.TextBox Text2 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15.75
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   2295
      Left            =   3720
      MultiLine       =   -1  'True
      ScrollBars      =   2  'Vertical
      TabIndex        =   1
      Top             =   480
      Width           =   2535
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15.75
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   2295
      Left            =   120
      MultiLine       =   -1  'True
      ScrollBars      =   2  'Vertical
      TabIndex        =   0
      Top             =   495
      Width           =   2655
   End
   Begin MSCommLib.MSComm MSComm1 
      Left            =   3960
      Top             =   3240
      _ExtentX        =   1005
      _ExtentY        =   1005
      _Version        =   393216
      CommPort        =   2
      DTREnable       =   -1  'True
      RThreshold      =   1
   End
End
Attribute VB_Name = "Form3"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
  Timer1.Enabled = Not Timer1.Enabled
End Sub

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

Private Sub MSComm1_OnComm()
   Select Case MSComm1.CommEvent
        Case comEvReceive   ' 收到 RThreshold
           Text2.Text = Text2.Text & MSComm1.Input & Chr(13) + Chr(10)                         '
    End Select
End Sub
Private Sub Timer1_Timer()
    Randomize (Now)
    Text1.Text = Int(Rnd * 100)
    MSComm1.Output = Text1.Text
End Sub