RS232串口通信实验报告

1、RS232串口通信实验报告学院：电子信息学院班级：08031102姓名：张泽宇 康启萌 余建军学号：2011301966 2011301950 2011301961时间：2014年11月13日学校：西北工业大学一实验题目：设计一个简单的基于串口通信的信息发送和接受界面二实验目的：1.熟悉并掌握RS232串口标准及原理。2.实现PC机通过RS232串口进行数据的收发。3.熟悉VC语言编写程序的环境，掌握基本的VC语言编程技巧。三实验内容程序代码：P/ PC1PC2Dlg.cpp : implementation file/#include "stdafx.h"#include

2、 "PC1PC2.h"#include "PC1PC2Dlg.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/ CAboutDlg dialog used for App Aboutclass CAboutDlg : public CDialogpublic:CAboutDlg();/ Dialog Data/AFX_DATA(CAboutDlg)enum IDD = IDD_ABOUTBOX ;/AFX_DATA/ Cla

3、ssWizard generated virtual function overrides/AFX_VIRTUAL(CAboutDlg)protected:virtual void DoDataExchange(CDataExchange* pDX); / DDX/DDV support/AFX_VIRTUAL/ Implementationprotected:/AFX_MSG(CAboutDlg)/AFX_MSGDECLARE_MESSAGE_MAP();CAboutDlg:CAboutDlg() : CDialog(CAboutDlg:IDD)/AFX_DATA_INIT(CAboutDl

4、g)/AFX_DATA_INITvoid CAboutDlg:DoDataExchange(CDataExchange* pDX)CDialog:DoDataExchange(pDX);/AFX_DATA_MAP(CAboutDlg)/AFX_DATA_MAPBEGIN_MESSAGE_MAP(CAboutDlg, CDialog)/AFX_MSG_MAP(CAboutDlg)/ No message handlers/AFX_MSG_MAPEND_MESSAGE_MAP()/ CPC1PC2Dlg dialogCPC1PC2Dlg:CPC1PC2Dlg(CWnd* pParent /*=NU

5、LL*/): CDialog(CPC1PC2Dlg:IDD, pParent)/AFX_DATA_INIT(CPC1PC2Dlg)m_send = _T("");m_receive = _T("");m_bt = _T("");/AFX_DATA_INIT/ Note that LoadIcon does not require a subsequent DestroyIcon in Win32m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);void CPC1PC2Dlg:DoDat

6、aExchange(CDataExchange* pDX)CDialog:DoDataExchange(pDX);/AFX_DATA_MAP(CPC1PC2Dlg)DDX_Control(pDX, IDC_MSCOMM1, m_Comm);DDX_Text(pDX, IDC_EDIT1, m_send);DDX_Text(pDX, IDC_EDIT2, m_receive);DDX_CBString(pDX, IDC_COMBO1, m_bt);/AFX_DATA_MAPBEGIN_MESSAGE_MAP(CPC1PC2Dlg, CDialog)/AFX_MSG_MAP(CPC1PC2Dlg)

7、ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()ON_BN_CLICKED(IDC_BUTTON1, OnButton1)ON_BN_CLICKED(IDC_BUTTON_SET, OnButtonSet)ON_BN_CLICKED(IDC_BUTTON2, OnButton2)/AFX_MSG_MAPEND_MESSAGE_MAP()/ CPC1PC2Dlg message handlersBOOL CPC1PC2Dlg:OnInitDialog()CDialog:OnInitDialog();/ Add "About.&qu

8、ot; menu item to system menu./ IDM_ABOUTBOX must be in the system command range.ASSERT(IDM_ABOUTBOX & 0xFFF0) = IDM_ABOUTBOX);ASSERT(IDM_ABOUTBOX < 0xF000);CMenu* pSysMenu = GetSystemMenu(FALSE);if (pSysMenu != NULL)CString strAboutMenu;strAboutMenu.LoadString(IDS_ABOUTBOX);if (!strAboutMenu.

9、IsEmpty()pSysMenu->AppendMenu(MF_SEPARATOR);pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);/ Set the icon for this dialog. The framework does this automatically/ when the application's main window is not a dialogSetIcon(m_hIcon, TRUE);/ Set big iconSetIcon(m_hIcon, FALSE);/ Se

10、t small icon/ TODO: Add extra initialization herem_Comm.SetCommPort(1); /选择COM1m_Comm.SetInputMode(1); /输入方式为二进制方式m_Comm.SetRThreshold(1); /参数1表示每当串口接收缓冲区中有多于或等于1个字符时将引发一个接收数据的OnComm事件/CString str;/str="9600,n,8,1"/m_Comm.SetSettings(str); m_Comm.SetPortOpen(TRUE);/打开串口return TRUE; / retur

11、n TRUE unless you set the focus to a controlvoid CPC1PC2Dlg:OnSysCommand(UINT nID, LPARAM lParam)if (nID & 0xFFF0) = IDM_ABOUTBOX)CAboutDlg dlgAbout;dlgAbout.DoModal();elseCDialog:OnSysCommand(nID, lParam);/ If you add a minimize button to your dialog, you will need the code below/ to draw the i

12、con. For MFC applications using the document/view model,/ this is automatically done for you by the framework.void CPC1PC2Dlg:OnPaint() if (IsIconic()CPaintDC dc(this); / device context for paintingSendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);/ Center icon in client rectangleint cxIco

13、n = GetSystemMetrics(SM_CXICON);int cyIcon = GetSystemMetrics(SM_CYICON);CRect rect;GetClientRect(&rect);int x = (rect.Width() - cxIcon + 1) / 2;int y = (rect.Height() - cyIcon + 1) / 2;/ Draw the icondc.DrawIcon(x, y, m_hIcon);elseCDialog:OnPaint();/ The system calls this to obtain the cursor t

14、o display while the user drags/ the minimized window.HCURSOR CPC1PC2Dlg:OnQueryDragIcon()return (HCURSOR) m_hIcon;/把字符通过串口发送出去void CPC1PC2Dlg:OnButton1() / TODO: Add your control notification handler code hereUpdateData(TRUE); /读编辑框内容if(strlen(m_send)=0) MessageBox("发送的数据不能为空！","提示&qu

15、ot;,MB_OK);elsem_Comm.SetOutput(COleVariant(m_send);Sleep(100);BEGIN_EVENTSINK_MAP(CPC1PC2Dlg, CDialog) /AFX_EVENTSINK_MAP(CPC1PC2Dlg)ON_EVENT(CPC1PC2Dlg, IDC_MSCOMM1, 1 /* OnComm */, OnOnCommMscomm1, VTS_NONE)/AFX_EVENTSINK_MAPEND_EVENTSINK_MAP()void CPC1PC2Dlg:OnOnCommMscomm1() / TODO: Add your co

16、ntrol notification handler code hereVARIANT data;COleSafeArray data2;CByteArray datatemp; CString strtemp,buffer;LONG len,i;BYTE Inbyte2048,temp;UpdateData(TRUE); /读编辑框内容if(m_Comm.GetCommEvent()=2) /事件值为2表示接收缓冲区内有字符 data=m_Comm.GetInput(); /读缓冲区 data2=data; /VARIANT型变量转换为ColeSafeArray型变量 len=data2.G

17、etOneDimSize(); /得到有效数据长度if(len>0) for(i=0;i<len;i+) data2.GetElement(&i,Inbyte+i);/转换为BYTE型数组 for(i=0;i<len;i+) /将数组转换为Cstring型变量 temp=*(char*)(Inbyte+i); /字符型 strtemp.Format("%c",temp); /将字符送入临时变量strtemp存放 buffer+=strtemp; /将字符串送入临时变量buffer中存放m_receive=m_receive+buffer+"

18、; "UpdateData(FALSE); /更新编辑框内容/MessageBox("gegnxin","提示",MB_OK);void CPC1PC2Dlg:OnButtonSet() / TODO: Add your control notification handler code hereUpdateData(TRUE);CString str;str.Format("%s,n,8,1",m_bt);m_Comm.SetSettings(str); void CPC1PC2Dlg:OnButton2() / TODO: Add your control notification handler code hereGetDlgItem(IDC_EDIT2)->SetWindowText(_T("");四实验过程：（1）将9针RS232串口通信线与PC机串口连接，并用跳线将RS232串口通信