jimian.frm

485的msp430通讯,包括主机和从机的程序.多机通讯,例子是三个弹片机,可以扩展多个,硬件终端电阻要求120,

VERSION 5.00
Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MSCOMM32.OCX"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   5265
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   8430
   LinkTopic       =   "Form1"
   ScaleHeight     =   5265
   ScaleWidth      =   8430
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox Text4 
      Height          =   735
      Left            =   7080
      TabIndex        =   7
      Top             =   2280
      Width           =   975
   End
   Begin VB.CommandButton Command4 
      Caption         =   "卧室"
      Height          =   735
      Left            =   7200
      TabIndex        =   6
      Top             =   3120
      Width           =   855
   End
   Begin VB.TextBox Text3 
      Height          =   735
      Left            =   5880
      TabIndex        =   5
      Top             =   2280
      Width           =   975
   End
   Begin VB.CommandButton Command3 
      Caption         =   "客厅"
      Height          =   735
      Left            =   5880
      TabIndex        =   4
      Top             =   3120
      Width           =   975
   End
   Begin VB.CommandButton Command2 
      Caption         =   "接收数据"
      Height          =   735
      Left            =   3240
      TabIndex        =   3
      Top             =   2400
      Width           =   1455
   End
   Begin VB.TextBox Text2 
      Height          =   975
      Left            =   1200
      MultiLine       =   -1  'True
      ScrollBars      =   2  'Vertical
      TabIndex        =   2
      Top             =   1320
      Width           =   3495
   End
   Begin VB.Timer Timer1 
      Interval        =   1000
      Left            =   600
      Top             =   0
   End
   Begin VB.TextBox Text1 
      Height          =   615
      Left            =   1200
      TabIndex        =   1
      Text            =   "1"
      Top             =   0
      Width           =   3495
   End
   Begin VB.CommandButton Command1 
      Caption         =   "发送数据"
      Height          =   615
      Left            =   3360
      TabIndex        =   0
      Top             =   720
      Width           =   1335
   End
   Begin MSCommLib.MSComm MSComm1 
      Left            =   0
      Top             =   0
      _ExtentX        =   1005
      _ExtentY        =   1005
      _Version        =   393216
      DTREnable       =   -1  'True
      InputLen        =   8
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim i1 As Long
Dim j1 As Long

Private Sub Command1_Click()
 Dim i As Long
 MSComm1.RTSEnable = False
 Do
 i = i + 1
 Loop Until i > 500000
 MSComm1.Output = Text1.Text
 i = 0
 Do
 i = i + 1
 Loop Until i > 500000
 MSComm1.RTSEnable = True
End Sub

Private Sub Command2_Click()
MSComm1.RTSEnable = True
End Sub

Private Sub Command3_Click()
Dim i1 As Long
Dim j1 As Long
 MSComm1.RTSEnable = False
 j1 = 1
 Do
 i1 = i1 + 1
 Loop Until i1 > 500000
 MSComm1.Output = j1
 i1 = 0
 Do
 i = i1 + 1
 Loop Until i1 > 500000
 MSComm1.RTSEnable = True
End Sub

Private Sub Command4_Click()
Dim i2 As Long
Dim j2 As Long
 MSComm1.RTSEnable = False
 j2 = 2
 Do
 i2 = i2 + 1
 Loop Until i > 500000
 MSComm1.Output = j2
 i2 = 0
 Do
 i2 = i2 + 1
 Loop Until i2 > 500000
 MSComm1.RTSEnable = True
End Sub

Private Sub Form_Load()
MSComm1.CommPort = 1
MSComm1.Settings = "9600,N,8,1"
MSComm1.InputLen = 0                 '用input可读出整个接受缓冲区中的内容
MSComm1.RThreshold = 1                '每当接收到一个数据时就引发OnComm事件，即使MSComm1.CommEvent = comEvReceive
MSComm1.PortOpen = True
MSComm1.RTSEnable = False
End Sub

 



Private Sub MSComm1_OnComm()
If (MSComm1.CommEvent = comEvReceive) Then
    Text2.Text = Asc(MSComm1.Input)
End If
End Sub