form1.frm

单片机通讯

VERSION 5.00
Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MSCOMM32.OCX"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3090
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3090
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin MSCommLib.MSComm MSComm1 
      Left            =   1800
      Top             =   2160
      _ExtentX        =   1005
      _ExtentY        =   1005
      _Version        =   393216
      DTREnable       =   -1  'True
   End
   Begin VB.CommandButton Command4 
      Caption         =   "右移"
      Height          =   495
      Left            =   2760
      TabIndex        =   3
      Top             =   1440
      Width           =   1215
   End
   Begin VB.CommandButton Command3 
      Caption         =   "左移"
      Height          =   495
      Left            =   480
      TabIndex        =   2
      Top             =   1440
      Width           =   1215
   End
   Begin VB.CommandButton Command2 
      Caption         =   "全灭"
      Height          =   495
      Left            =   2760
      TabIndex        =   1
      Top             =   360
      Width           =   1215
   End
   Begin VB.CommandButton Command1 
      Caption         =   "全亮"
      Height          =   495
      Left            =   480
      TabIndex        =   0
      Top             =   360
      Width           =   1215
   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()
    MSComm1.OutBufferCount = 0 '清空发送缓冲区
    MSComm1.Output = "1"
End Sub

Private Sub Command2_Click()
    MSComm1.OutBufferCount = 0 '清空发送缓冲区
    MSComm1.Output = "2"
End Sub

Private Sub Command3_Click()
    MSComm1.OutBufferCount = 0 '清空发送缓冲区
    MSComm1.Output = "3"
End Sub

Private Sub Command4_Click()
    MSComm1.OutBufferCount = 0 '清空发送缓冲区
    MSComm1.Output = "4"
End Sub

Private Sub Form_Load()
    With MSComm1
         If .CommPort <> 2 Then .CommPort = 1 '设置Com1为通信端口
         .Settings = "9600,N,8,1" '设置通信端口参数 9600赫兹、无校验、8个数据位、1个停止位.（这里需要进一步说明的是：.Setting=”BBBB,P,D,S”。
                                    '含义是：B：Baud Rate（波特率）；P：Parity（奇偶）；D：Data Bit；S：Stop Bit）
         .InBufferSize = 1024 '设置缓冲区接收数据为1024字节
         .OutBufferSize = 512
         .InputMode = comInputModeText '设置数据接收模式为16进制形式
         .InputLen = 1 '设置Input一次从接收缓冲读取字节数为1
         .RThreshold = 1 '设置接收一个字节就产生OnComm事件
         .OutBufferCount = 0              '清空发送缓冲区
        .InBufferCount = 0               '滑空接收缓冲区
          If Not .PortOpen Then
             .PortOpen = True        '打开通信端口
           End If
    End With
End Sub