serialporttestdlg.cpp

基于VC++的,多个串口的,带通讯协议的应用程序,两个通讯口,可分别接受,发送协议数据包.

// SerialPortTestDlg.cpp : implementation file
//

#include "stdafx.h"
#include "SerialPortTest.h"
#include "SerialPortTestDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CSerialPortTestDlg dialog

CSerialPortTestDlg::CSerialPortTestDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSerialPortTestDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSerialPortTestDlg)
	m_strEditReceiveMsg = _T("");
	m_strEditSendMsg = _T("");
	m_unEditPosition = 0;
	m_unEditVelocity = 0;
	m_unEditVelocity2 = 0;
	m_unEditPosition2 = 0;
	m_strEditDispData2 = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_bSerialPortOpened=FALSE; //初始状态：串口1没有打开
	m_bSerialPortOpened2=FALSE; //初始状态：串口2没有打开
	m_unPort=1;
	m_unPort2=2;
	m_strPortRXData2="";
	m_strChecksum2="";
}

void CSerialPortTestDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSerialPortTestDlg)
	DDX_Control(pDX, IDC_STATIC_ICONS1, m_ctrlStaticIconS1);
	DDX_Control(pDX, IDC_STATIC_ICONS2, m_ctrlStaticIconS2);
	DDX_Control(pDX, IDC_STATIC_ICONS3, m_ctrlStaticIconS3);
	DDX_Control(pDX, IDC_STATIC_ICONS4, m_ctrlStaticIconS4);
	DDX_Control(pDX, IDC_STATIC_ICONS5, m_ctrlStaticIconS5);
	DDX_Control(pDX, IDC_STATIC_ICONS6, m_ctrlStaticIconS6);
	DDX_Control(pDX, IDC_STATIC_ICONS7, m_ctrlStaticIconS7);
	DDX_Control(pDX, IDC_STATIC_ICONS8, m_ctrlStaticIconS8);
	DDX_Control(pDX, IDC_STATIC_ICONS9, m_ctrlStaticIconS9);
	DDX_Control(pDX, IDC_CHECK_SWITCH1, m_ctrlCheckSwitch1);
	DDX_Control(pDX, IDC_CHECK_SWITCH2, m_ctrlCheckSwitch2);
	DDX_Control(pDX, IDC_CHECK_SWITCH3, m_ctrlCheckSwitch3);
	DDX_Control(pDX, IDC_CHECK_SWITCH4, m_ctrlCheckSwitch4);
	DDX_Control(pDX, IDC_CHECK_SWITCH5, m_ctrlCheckSwitch5);
	DDX_Control(pDX, IDC_CHECK_SWITCH6, m_ctrlCheckSwitch6);
	DDX_Control(pDX, IDC_CHECK_SWITCH7, m_ctrlCheckSwitch7);
	DDX_Control(pDX, IDC_CHECK_SWITCH8, m_ctrlCheckSwitch8);
	DDX_Control(pDX, IDC_CHECK_SWITCH9, m_ctrlCheckSwitch9);
	DDX_Control(pDX, IDC_COMBO_COMPORT2, m_ctrlComboComPort2);
	DDX_Control(pDX, IDC_COMBO_COMPORT, m_ctrlComboComPort);
	DDX_Text(pDX, IDC_EDIT_RECEIVEMSG, m_strEditReceiveMsg);
	DDX_Text(pDX, IDC_EDIT_SENDMSG, m_strEditSendMsg);
	DDX_Text(pDX, IDC_EDIT_POSITION, m_unEditPosition);
	DDV_MinMaxUInt(pDX, m_unEditPosition, 0, 31);
	DDX_Text(pDX, IDC_EDIT_VELOCITY, m_unEditVelocity);
	DDV_MinMaxUInt(pDX, m_unEditVelocity, 0, 120);
	DDX_Text(pDX, IDC_EDIT_VELOCITY2, m_unEditVelocity2);
	DDX_Text(pDX, IDC_EDIT_POSITION2, m_unEditPosition2);
	DDX_Text(pDX, IDC_EDIT_DISPDATA2, m_strEditDispData2);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSerialPortTestDlg, CDialog)
	//{{AFX_MSG_MAP(CSerialPortTestDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_MESSAGE(WM_COMM_RXCHAR, OnComm)
	ON_BN_CLICKED(IDC_BUTTON_OPEN, OnButtonOpen)
	ON_BN_CLICKED(IDC_BUTTON_CLOSE, OnButtonClose)
	ON_BN_CLICKED(IDC_BUTTON_SEND, OnButtonSend)
	ON_BN_CLICKED(IDC_BUTTON_OPEN2, OnButtonOpen2)
	ON_BN_CLICKED(IDC_BUTTON_CLOSE2, OnButtonClose2)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSerialPortTestDlg message handlers

BOOL CSerialPortTestDlg::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_ctrlComboComPort.SetCurSel(0); //初始选择串口1
	m_ctrlComboComPort2.SetCurSel(1); //初始选择串口2

	//以下两句分别设置“打开串口”、“关闭串口”两个按状态的使能状态
	GetDlgItem(IDC_BUTTON_OPEN)->EnableWindow(!m_bSerialPortOpened);
	GetDlgItem(IDC_BUTTON_CLOSE)->EnableWindow(m_bSerialPortOpened);
	GetDlgItem(IDC_BUTTON_OPEN2)->EnableWindow(!m_bSerialPortOpened2);
	GetDlgItem(IDC_BUTTON_CLOSE2)->EnableWindow(m_bSerialPortOpened2);

	//载入图标
	m_hIconRed  = AfxGetApp()->LoadIcon(IDI_ICON_RED);
	m_hIconOff	= AfxGetApp()->LoadIcon(IDI_ICON_OFF);
     
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CSerialPortTestDlg::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 CSerialPortTestDlg::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 CSerialPortTestDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

#define CR 0X0D    //回车
#define LF 0X0A    //换行
LONG CSerialPortTestDlg::OnComm(WPARAM ch, LPARAM port)
{
	static char checksum=0,checksum1=0;
	static int count1=0;//,count2=0,count3=0;
	static unsigned char buf[20]; 
    static char c1,c2;    //用于计算半Byte校验
	static int flag;     //用于接收阶段标记
	static int twoflag=0;

	if(port == m_unPort)
	{
		if(ch>127)   //是不是首字节
		{
			count1=0;  //记录接收字符的个数
			buf[count1]=ch;
			checksum1= ch-128;  //开始计算校验值
		}
		else
		{
			count1++;
			buf[count1]=ch;
			checksum1 = checksum1^ch;
			if(count1==3)  //包括校验字节在内的全部接收完毕
			{
				if(checksum1)  //校验错
				{
					m_strEditReceiveMsg = "接收校验出错";
					UpdateData(FALSE);
				}
				else 
				{
					CString str;
					unsigned char * temp=(unsigned char*)buf;
					m_strEditReceiveMsg ="接收到的简单通信协议字节为：";
					for(int i=0;i<4;i++)
					{
						str.Format("%02X ",*(buf+i));
						m_strEditReceiveMsg += str;
					}
					UpdateData(FALSE);
				}
				if(count1>5)   //防止出错
					count1=0;
			}
		}
	}

	if(port==m_unPort2)   //串口2的数据处理
	{
		m_strPortRXData2 += (char)ch;
		switch(ch)
		{
		case '$':
			checksum=0;			//开始计算CheckSum
			flag=0;
			break;
		case '*':  //有效数据结束，可以$和*之间数据的半Byte校验值了
			flag=2;
			c2=checksum & 0x0f;	c1=((checksum >> 4) & 0x0f);
			if (c1 < 10) c1+= '0';	else c1 += 'A' - 10;
			if (c2 < 10) c2+= '0';	else c2 += 'A' - 10;
			break;
		case CR:   //这句必须加上，否则会出错的
			break;
		case LF:   //数据包的最后一个字符
			m_strPortRXData2.Empty();
			break;
		default:
			if(flag>0)  //注意：只有在接收到'*'后，flag才大于0
			{
				m_strChecksum2 += ch;  
				if(flag==1) 
				{
					CString strCheck="";
					strCheck.Format("%c%c",c1,c2);
					if(strCheck!=m_strChecksum2)  //校验计算不正确，说明接收数据出错