api_com_testdlg.cpp

利用vc编写的串口收发消息的源码。利用serial类进行编程

// api_com_testDlg.cpp : implementation file
//

#include "stdafx.h"
#include "api_com_test.h"
#include "api_com_testDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CApi_com_testDlg dialog

CApi_com_testDlg::CApi_com_testDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CApi_com_testDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CApi_com_testDlg)
	m_strsend = _T("");
	m_ReceiveData = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CApi_com_testDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CApi_com_testDlg)
	DDX_Control(pDX, IDC_EDIT_RECEIVE, m_ctrlReceiveData);
	DDX_Text(pDX, IDC_EDIT_SEND, m_strsend);
	DDX_Text(pDX, IDC_EDIT_RECEIVE, m_ReceiveData);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CApi_com_testDlg, CDialog)
	//{{AFX_MSG_MAP(CApi_com_testDlg)
	ON_MESSAGE(WM_COMM_RXCHAR, OnCommunication)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_SEND, OnButtonSend)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CApi_com_testDlg message handlers

BOOL CApi_com_testDlg::OnInitDialog()
{
	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);
	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
	m_nBaud=9600;
	m_nCom=2;
	m_cParity='N';
	m_nDatabits=8;
	m_nStopbits=1;
	m_dwCommEvents = EV_RXFLAG | EV_RXCHAR;
	//if (m_Port.InitPort(this, 1, 9600,'N',8,1,dwCommEvents,512))

	if (m_Port.InitPort(this, m_nCom, m_nBaud,m_cParity,m_nDatabits,m_nStopbits,m_dwCommEvents,512))
	{
		m_Port.StartMonitoring();	

		//"当前状态：串口打开，无奇偶校验，8数据位，1停止位");
	}
	else
	{
		AfxMessageBox("没有发现此串口");
	}

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

static long rxdatacount=0;  //该变量用于接收字符计数
LONG CApi_com_testDlg::OnCommunication(WPARAM ch, LPARAM port)
{
	if (port <= 0 || port > 4)
		return -1;
	rxdatacount++;   //接收的字节计数
	CString strTemp;
	strTemp.Format("%ld",rxdatacount);
	strTemp="RX:"+strTemp;


	
	//如果没有“自动清空”，数据行达到400后，也自动清空
	//因为数据过多，影响接收速度，显示是最费CPU时间的操作
	if(m_ctrlReceiveData.GetLineCount()>400)
	{
		m_ReceiveData.Empty();
		m_ReceiveData="***The Length of the Text is too long, Emptied Automaticly!!!***\r\n";        
		UpdateData(FALSE);
	}

	//如果选择了"十六进制显示"，则显示十六进制值
   CString str;
	str.Format("%c",ch);
	//以下是将接收的字符加在字符串的最后，这里费时很多
	//但考虑到数据需要保存成文件，所以没有用List Control
	int nLen=m_ctrlReceiveData.GetWindowTextLength();
	m_ctrlReceiveData.SetSel(nLen, nLen);
	m_ctrlReceiveData.ReplaceSel(str);
	nLen+=str.GetLength();

	m_ReceiveData+=str;
	UpdateData(FALSE);

	return 0;
}


void CApi_com_testDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	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 CApi_com_testDlg::OnPaint() 
{
	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 CApi_com_testDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

long TX_count=0;
void CApi_com_testDlg::OnButtonSend() 
{
	// TODO: Add your control notification handler code here	
	if(m_Port.m_hComm==NULL)
	{		
		AfxMessageBox("串口没有打开，请打开串口");
		return;
	}
	else
	{
		UpdateData(TRUE);		
		
			m_Port.WriteToPort((LPCTSTR)m_strsend);	//发送数据
			TX_count+=m_strsend.GetLength();		
	
	}

}