serialcommdlg.cpp

使用RSC232进行双机通信

// SerialCommDlg.cpp : implementation file
//

#include "stdafx.h"
#include "SerialComm.h"
#include "SerialCommDlg.h"

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

#include <atlconv.cpp> 
#define MESSAGELENGTH 256

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CSerialCommDlg dialog

CSerialCommDlg::CSerialCommDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSerialCommDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSerialCommDlg)
	m_szRecvData = _T("");
	m_szSendData = _T("");
	m_szCOMName = _T("");
	m_szDataBits = _T("");
	m_szParity = _T("");
	m_szStopBits = _T("");
	m_szBaud = _T("");
	m_nSendCount = 0;
	m_nRecvCount = 0;
	m_szStatus = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

	m_iRecvDataCount = 0;
}

void CSerialCommDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSerialCommDlg)
	DDX_Control(pDX, IDC_SAVE, m_btnSave);
	DDX_Control(pDX, IDC_BAUD, m_ctrlBaud);
	DDX_Control(pDX, IDC_STOP_BIT, m_ctrlStopBits);
	DDX_Control(pDX, IDC_PARITY, m_ctrlParity);
	DDX_Control(pDX, IDC_DATA_BIT, m_ctrlDataBits);
	DDX_Control(pDX, IDC_COM_NAME, m_ctrlCOMName);
	DDX_Control(pDX, IDC_RECV_DATA, m_Recv_Ctrl);
	DDX_Control(pDX, IDC_MSCOMM, m_COM);
	DDX_Text(pDX, IDC_RECV_DATA, m_szRecvData);
	DDX_Text(pDX, IDC_SEND_DATA, m_szSendData);
	DDX_CBString(pDX, IDC_COM_NAME, m_szCOMName);
	DDV_MaxChars(pDX, m_szCOMName, 4);
	DDX_CBString(pDX, IDC_DATA_BIT, m_szDataBits);
	DDV_MaxChars(pDX, m_szDataBits, 1);
	DDX_CBString(pDX, IDC_PARITY, m_szParity);
	DDV_MaxChars(pDX, m_szParity, 8);
	DDX_CBString(pDX, IDC_STOP_BIT, m_szStopBits);
	DDV_MaxChars(pDX, m_szStopBits, 1);
	DDX_CBString(pDX, IDC_BAUD, m_szBaud);
	DDV_MaxChars(pDX, m_szBaud, 10);
	DDX_Text(pDX, IDC_SEND_COUNT, m_nSendCount);
	DDX_Text(pDX, IDC_RECV_COUNT, m_nRecvCount);
	DDX_Text(pDX, IDC_STATUS, m_szStatus);
	DDV_MaxChars(pDX, m_szStatus, 8);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSerialCommDlg, CDialog)
	//{{AFX_MSG_MAP(CSerialCommDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_TIMER()
	ON_WM_CREATE()
	ON_BN_CLICKED(IDC_CLEAR_SEND, OnClearSend)
	ON_BN_CLICKED(IDC_SEND, OnSend)
	ON_BN_CLICKED(IDC_CLEAR_RECV, OnClearRecv)
	ON_BN_CLICKED(IDC_SAVE, OnSave)
	ON_WM_VSCROLL()
	ON_BN_CLICKED(IDC_OPEN_CLOSE, OnOpenClose)
	ON_CBN_SELCHANGE(IDC_BAUD, OnSelchangeBaud)
	ON_CBN_SELCHANGE(IDC_COM_NAME, OnSelchangeComName)
	ON_CBN_SELCHANGE(IDC_DATA_BIT, OnSelchangeDataBit)
	ON_CBN_SELCHANGE(IDC_PARITY, OnSelchangeParity)
	ON_CBN_SELCHANGE(IDC_STOP_BIT, OnSelchangeStopBit)
	ON_BN_CLICKED(IDC_CLEAR_COUNT, OnClearCount)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSerialCommDlg message handlers

BOOL CSerialCommDlg::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_COM.SetCommPort(1);     
	if (!m_COM.GetPortOpen()) 
	{           
		m_COM.SetSettings("57600,N,8,1");           
		m_COM.SetPortOpen(true);           
		m_COM.SetInBufferCount(0);           
		SetTimer(1,10,NULL);          
		InBuffer.bstrVal  = new unsigned short[MESSAGELENGTH];          
		OutBuffer.bstrVal = new unsigned short[MESSAGELENGTH];          
		OutBuffer.vt=VT_BSTR;          
	}
	*/


	if(m_COM.GetPortOpen())
	{
		m_COM.SetPortOpen(FALSE);
	}
	
	m_COM.SetCommPort(1); //选择com1
	if( !m_COM.GetPortOpen())
	{
		m_COM.SetPortOpen(TRUE);//打开串口
		m_szStatus = "打开";
	}
	else
	{
		AfxMessageBox("无法打开串行端口！");
	}
	m_COM.SetSettings("9600,n,8,1"); //波特率9600，无校验，8个数据位，1个停止位 
	m_COM.SetInputMode(1);	//1：表示以二进制方式检取数据
	m_COM.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
	m_COM.SetInputLen(0);	//设置当前接收区数据长度为0
	m_COM.GetInput();		//先预读缓冲区以清除残留数据

	m_nSendCount = 0;
	m_nRecvCount = 0;
	//m_szStatus = "关闭";
	UpdateData(FALSE);

	int min = 0;
	int max = 10;
	m_Recv_Ctrl.SetScrollRange (SB_VERT, min, max, TRUE);
	//m_Recv_Ctrl.SetScrollPos (SB_VERT, 0, TRUE);
	//m_ctrlCOMName.GetCount();
	if (m_ctrlCOMName.SetCurSel(0) == CB_ERR ||
		m_ctrlBaud.SetCurSel(5) == CB_ERR ||
		m_ctrlDataBits.SetCurSel(3) == CB_ERR ||
		m_ctrlParity.SetCurSel(0) == CB_ERR ||
		m_ctrlStopBits.SetCurSel(0) == CB_ERR)
	{
		::AfxMessageBox("初始化失败！");
	}
	if(m_COM.GetPortOpen())
	{
		GetDlgItem(IDC_OPEN_CLOSE)->SetWindowText("关闭串口(&S)");
	}
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CSerialCommDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}


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

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

void CSerialCommDlg::OnCommMscomm() 
{
	UpdateData(TRUE);//取控件的数据
	switch(m_COM.GetCommEvent()) 
	{ 
	case 1: //comEvSend事件 
		{
			//如有数据要发送，可采用以下代码：
			//AfxMessageBox("发送数据");
		//	OnSend();
		}
		break; 
	case 2: //comEvReceiv事件，有数据到达 
		{
			VARIANT variant_inp;
			COleSafeArray safearray_inp;
			LONG len,k;
			BYTE rxdata[BUFFER_SIZE]; //设置BYTE数组 An 8-bit integerthat is not signed.
			CString strtemp;
			variant_inp=m_COM.GetInput();		//读缓冲区
			safearray_inp=variant_inp;			//VARIANT型变量转换为ColeSafeArray型变量
			len=safearray_inp.GetOneDimSize();	//得到有效数据长度
			for(k=0;k<BUFFER_SIZE;k++)
				rxdata[k]=0;
			for(k=0;k<len;k++)
			{
				safearray_inp.GetElement(&k, rxdata + k);//转换为BYTE型数组
				if (rxdata[k]==ZRO)
					rxdata[k]=0;
			}
			if (rxdata[0]==ENQ)
			{
				InitData();
				BYTE btmp[2];
				btmp[0]=ACK;
				btmp[1]=0;//0无法收到
				BufSend(btmp, 2);
				wFile.Open("received.txt", CFile::modeCreate | CFile::modeWrite | CFile::typeBinary, NULL);
			}
			{	CString tmp;
				tmp.Format("len=%d   %d  %d  ackt=%d  %d %d",len,rxdata[0],rxdata[1],ackt,ack[0],ack[1]);
				MessageBox(tmp);
			}
			if (rxdata[0]==ACK && rxdata[1]==ackt)
			{
				ack[ackt]=1;
				ackt=1-ackt;
//				MessageBox("HERE 1");
//				CString tmp;
//				tmp.Format("len=%d ackt=%d   %d  %d    %d %d",len,ackt, rxdata[0],rxdata[1],ack[0],ack[1]);
//				MessageBox(tmp,"here");
			}
			if (rxdata[0]==EOT)
			{
				eot=1;
				wFile.Close();
			} else if (rxdata[0]==STX && rxdata[len-1]==ETX)
			{
				if (BCC(rxdata, len-4)!=rxdata[len-2])
				{
					BYTE btmp=NAK;
					BufSend(&btmp, 1);
					return;
				}
				else if (rxdata[1]==ackt)
				{
					wFile.Write(rxdata+2, len-4);
					//UpdateData(FALSE);	//更新编辑框内容
					BYTE btmp[2];
					btmp[0]=ACK;
					ackt=1-ackt;
					btmp[1]=ackt;//0无法收到
					BufSend(btmp, 2);
				}
			}
		}
		break; 
	case 1009://comEventRxParity事件，奇偶校验错误 
		{
			//错误处理代码 
			::AfxMessageBox("奇偶校验错误！（未处理）");
		}
		break; 
	default: 
		break; 
	} 
	this->UpdateData(FALSE);//更新控件
}

void CSerialCommDlg::OnTimer(UINT nIDEvent) 
{
	//OnSend();
	CDialog::OnTimer(nIDEvent);
}



int CSerialCommDlg::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CDialog::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	DWORD style=WS_VISIBLE|WS_CHILD;
	if (!m_COM.Create(NULL,style,CRect(0,0,0,0),this,IDC_MSCOMM))
	{
		::AfxMessageBox("Failed to create OLE Communications Control\n");
		return -1;// fail to create
	}
	
	return 0;
}

void CSerialCommDlg::OnClearSend() 
{	
	this->m_szSendData.Empty();
	this->UpdateData(FALSE);
}

void CSerialCommDlg::OnSend() 
{
	UpdateData(TRUE);
	InitData();
	if(m_COM.GetPortOpen())
	{
		CString fName, tmp;
		int rLen, t, stime, count, maxcount=10; //turn, start_time
		CFile rwFile;
		CFileDialog GetFileName(TRUE, NULL, NULL, OFN_HIDEREADONLY, "文本文件(*.txt)|*.txt||", NULL);
		if (GetFileName.DoModal()==IDOK)
			fName=GetFileName.GetFileName();
		if (!rwFile.Open(fName, CFile::modeRead | CFile::typeBinary, NULL))
		{
			m_szSendData+="[失败]打开文件错误！\r\n";
			UpdateData(FALSE);
			return;
		} else
			m_szSendData+="[成功]打开文件："+fName+"。\r\n";
		UpdateData(FALSE);	//更新编辑框内容
		t=0;
		ack[t]=0;
		stime=GetTickCount();//未完成
		Buf[0]=ENQ;
		BufSend(Buf, 1);
		m_szSendData+="[操作]发送ENQ\r\n";
		UpdateData(FALSE);
		BufSend(Buf, 1);
		for (count=0; count<maxcount && ack[0]==0; count++)
		{