c++ 串口通信程序示例源码

基本信息
源码名称：c++ 串口通信程序示例源码
源码大小：8.24M
文件格式：.rar
开发语言：C/C++
更新时间：2018-04-10
友情提示：（无需注册或充值，赞助后即可获取资源下载链接）
嘿，亲！知识可是无价之宝呢，但咱这精心整理的资料也耗费了不少心血呀。小小地破费一下，绝对物超所值哦！如有下载和支付问题，请联系我们QQ(微信同号)：813200300
本次赞助数额为： 2 元　
源码介绍
// DemoDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Demo.h"
#include "DemoDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDemoDlg dialog

CDemoDlg::CDemoDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDemoDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDemoDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CDemoDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDemoDlg)
	DDX_Control(pDX, IDC_COMBO_COMM_STOP_BIT, m_ComboCOMStopBit);		//停止位
	DDX_Control(pDX, IDC_COMBO_COMM_DATA_BIT, m_ComboCOMDataBit);		//数据位
	DDX_Control(pDX, IDC_COMBO_COMM_CHECK_BIT, m_ComboCOMCheckBit);		//校验位
	DDX_Control(pDX, IDC_COMBO_COMM_BAUD, m_ComboCOMBaud);				//波特率
	DDX_Control(pDX, IDC_COMBO_COMM_NUM, m_ComboCOMNum);				//串口
	DDX_Control(pDX, IDC_MSCOMM_TEST, m_MSComm);						//串口设置
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDemoDlg, CDialog)
	//{{AFX_MSG_MAP(CDemoDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BTN_COMM_OPEN, OnBtnCommOpen)          //打开串口
	ON_BN_CLICKED(IDC_BTN_COMM_CLOSE, OnBtnCommClose)		//关闭串口
	ON_BN_CLICKED(IDC_BTN_SEND, OnBtnSend)					//读取测量值
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDemoDlg message handlers

BOOL CDemoDlg::OnInitDialog()			//定义组合框控件
{
	CDialog::OnInitDialog();

	// Add "About..." 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);     //获得系统菜单
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.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 dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here


	// 初始化下拉列表
	m_ComboCOMNum.InsertString(0, "COM1");
	m_ComboCOMNum.InsertString(1, "COM2");
	m_ComboCOMNum.InsertString(2, "COM3");
	m_ComboCOMNum.InsertString(3, "COM4");
	m_ComboCOMNum.InsertString(4, "COM5");
	m_ComboCOMNum.InsertString(5, "COM6");
	m_ComboCOMNum.InsertString(6, "COM7");
	m_ComboCOMNum.InsertString(7, "COM8");
	m_ComboCOMNum.SetCurSel(0);
	//
	m_ComboCOMBaud.InsertString(0, "4800");
	m_ComboCOMBaud.InsertString(1, "9600");
	m_ComboCOMBaud.InsertString(2, "19200");
	m_ComboCOMBaud.InsertString(3, "34800");
	m_ComboCOMBaud.InsertString(4, "43000");
	m_ComboCOMBaud.InsertString(5, "56000");
	m_ComboCOMBaud.InsertString(6, "57600");
	m_ComboCOMBaud.InsertString(7, "115200");
	m_ComboCOMBaud.SetCurSel(1);
	//
	m_ComboCOMCheckBit.InsertString(0, "NONE");
	m_ComboCOMCheckBit.InsertString(1, "ODD");
	m_ComboCOMCheckBit.InsertString(2, "EVEN");
	m_ComboCOMCheckBit.SetCurSel(0);
	//
	m_ComboCOMDataBit.InsertString(0, "6");
	m_ComboCOMDataBit.InsertString(1, "7");
	m_ComboCOMDataBit.InsertString(2, "8");
	m_ComboCOMDataBit.SetCurSel(2);
	//
	m_ComboCOMStopBit.InsertString(0, "1");
	m_ComboCOMStopBit.InsertString(1, "2");
	m_ComboCOMStopBit.SetCurSel(0);

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CDemoDlg::OnSysCommand(UINT nID, LPARAM lParam)   //系统截获控制命令
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CDemoDlg::OnPaint()			//是WM_PAINT消息的消息处理函数
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = 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 icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CDemoDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CDemoDlg::OnBtnCommOpen()					//打开串口代码
{
	// TODO: Add your control notification handler code here

	CString strCOMNum = "";
	CString strComBaud = "";
	CString strComCheckBit = "";
	CString strComDataBit = "";
	CString strComStopBit = "";

	// 获取下拉框参数
	m_ComboCOMNum.GetLBText(m_ComboCOMNum.GetCurSel(), strCOMNum);                     //GetCurSel()，获取当前光标的位置
	m_ComboCOMBaud.GetLBText(m_ComboCOMBaud.GetCurSel(), strComBaud);
	m_ComboCOMCheckBit.GetLBText(m_ComboCOMCheckBit.GetCurSel(), strComCheckBit);		//GetLBText，从组合框的列表框中获取字符串
	m_ComboCOMDataBit.GetLBText(m_ComboCOMDataBit.GetCurSel(), strComDataBit);
	m_ComboCOMStopBit.GetLBText(m_ComboCOMStopBit.GetCurSel(), strComStopBit);

	// 获取串口号
	strCOMNum = strCOMNum.Right(1);
	// 转换成整数
	int nCom = atoi((LPSTR)(LPCSTR)strCOMNum);

	// 获取校验位
	CString strCheckBit = "";
	if (strComCheckBit == "ODD")
	{
		strCheckBit = "o";
	}
	else if (strComCheckBit == "EVEN")
	{
		strCheckBit = "e";
	}
	else
	{	// NONE
		strCheckBit = "n";
	}
	// 生成参数字符串
	CString strRef = "";
	strRef.Format("%s,%s,%s,%s", strComBaud, strCheckBit, strComDataBit, strComStopBit);

	// 如果串口打开的，先关闭掉
	if(m_MSComm.GetPortOpen())
	{
		m_MSComm.SetPortOpen(false); 
	}

	// 设置串口参数
	m_MSComm.SetInputMode(1);
	m_MSComm.SetInBufferSize(1024);
	m_MSComm.SetOutBufferSize(512);
	m_MSComm.SetSettings(strRef);
	m_MSComm.SetRThreshold(1);
	m_MSComm.SetInputLen(0);

	// 打开串口
	m_MSComm.SetCommPort(nCom);
	if(!m_MSComm.GetPortOpen())
	{
		m_MSComm.SetPortOpen(true);
		MessageBox("串口打开", "提示", MB_ICONINFORMATION);
	}
	else
	{
		m_MSComm.SetOutBufferCount(0);
	}
}

void CDemoDlg::OnBtnCommClose() 
{
	// TODO: Add your control notification handler code here

	// 关闭串口
	if(m_MSComm.GetPortOpen())
	{
		m_MSComm.SetPortOpen(false);
		MessageBox("串口关闭", "提示", MB_ICONINFORMATION);
	}
}

void CDemoDlg::OnBtnSend() 
{
	// TODO: Add your control notification handler code here

	// 站号，如：03
	CString strNum;
	GetDlgItem(IDC_EDIT_STATION_NUM)->GetWindowText(strNum);
	// 去除两头的空格
	strNum.TrimLeft();
	strNum.TrimRight();
	// 数据判异
	if (strNum.IsEmpty())
	{
		MessageBox("请输入站号，如：03", "提示", MB_ICONINFORMATION);
		return;
	}
	else if (strNum.GetLength() == 1)
	{
		strNum = "0"   strNum;
	}
	else if (strNum.GetLength() > 2)
	{
		strNum = strNum.Right(2);
	}

	BYTE* pNum = (BYTE*)(LPSTR)(LPCSTR)strNum;

	// 发送数据，如读取站号03的测量值：(%,0,3,#,R,M,D,*,*,CR)
	CByteArray sendArr;
	sendArr.SetSize(10);
	sendArr.SetAt(0, '%');
	sendArr.SetAt(1, pNum[0]);
	sendArr.SetAt(2, pNum[1]);
	sendArr.SetAt(3, '#');
	sendArr.SetAt(4, 'R');
	sendArr.SetAt(5, 'M');
	sendArr.SetAt(6, 'D');
	sendArr.SetAt(7, '*');
	sendArr.SetAt(8, '*');
	sendArr.SetAt(9, '\r');

	// 向串口发送数据
	m_MSComm.SetOutput(COleVariant(sendArr));
}

BEGIN_EVENTSINK_MAP(CDemoDlg, CDialog)
    //{{AFX_EVENTSINK_MAP(CDemoDlg)
	ON_EVENT(CDemoDlg, IDC_MSCOMM_TEST, 1 /* OnComm */, OnCommMscomm, VTS_NONE)
	//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()

void CDemoDlg::OnCommMscomm() 
{
	// TODO: Add your control notification handler code here

	VARIANT variant_inp;
	COleSafeArray safearray_inp;
	long i = 0;
	int len = 0;
	unsigned char rxdata[1000];
	CString tmp;

	// 串口接收数据
	switch (m_MSComm.GetCommEvent())
	{
	case 1: // comEvSend发送数据
		break;
	case 2: // 表示接收缓冲区内有字符    comEvReceive读取数据
		{
			// 获取数据
			variant_inp = m_MSComm.GetInput();
			safearray_inp = variant_inp;
			// 获取长度
			len = safearray_inp.GetOneDimSize();
			// 获取字符
			CString strRecvData;
			CString strHex;
			for (i = 0; i < len; i  )
			{
				safearray_inp.GetElement(&i, &rxdata[i]);
				// 转换成16进制文本
				strHex.Format("%02X ", rxdata[i]);
				strRecvData  = strHex;
			}
			rxdata[i] = '\0';

			// 收到的数据，如收到站号03的测量值：(%,0,3,$,R,M,D,-,0,1,2,3,4,5,6,*,*,CR) == -12.3456[mm]
			CString strData = rxdata;

			// 符号位
			CString strSign = strData.Mid(7, 1);
			// 整数部分
			CString strInt = strData.Mid(8, 3);
			int nInt = atoi(strInt);
			strInt.Format("%d", nInt);
			// 小数部分
			CString strDec = strData.Mid(11, 4);
			// 组合数据
			CString strResult;
			if ("-" == strSign)
			{	// 负数
				strResult = strSign   strInt   "."   strDec   "mm";
			}
			else
			{	// 正数
				strResult = strInt   "."   strDec   "mm";
			}

			// 显示测量值
			GetDlgItem(IDC_EDIT_RESULT)->SetWindowText(strResult);
		}
		break;
	default:
		break;
	}
}