argoxtestdlg.cpp

wince4.2下从串口3读取扫描设备的数据的程序,扫描设备为ARGOX的AS-8000,串口波特为9600bps.

// argoxtestDlg.cpp : implementation file
//

#include "stdafx.h"
#include "argoxtest.h"
#include "argoxtestDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CArgoxtestDlg dialog
HANDLE hRendEvent = INVALID_HANDLE_VALUE;
HANDLE hReadThread = INVALID_HANDLE_VALUE;

CArgoxtestDlg::CArgoxtestDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CArgoxtestDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CArgoxtestDlg)
		// 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 CArgoxtestDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CArgoxtestDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CArgoxtestDlg, CDialog)
	//{{AFX_MSG_MAP(CArgoxtestDlg)
	ON_BN_CLICKED(IDC_BUTTON_EXIT, OnButtonExit)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CArgoxtestDlg message handlers

BOOL CArgoxtestDlg::OnInitDialog()
{
	HANDLE hWnd;
	DWORD dwTStat;
	CDialog::OnInitDialog();

	// 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
	
	CenterWindow(GetDesktopWindow());	// center to the hpc screen

	// TODO: Add extra initialization here
	Argox_Init(_T("COM3:"),CBR_9600);
	
	hWnd=::FindWindow(NULL,_T("argoxtest"));
	
	hReadEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
	//Create write thread.Read thread created when port opened.
	hReadThread = CreateThread(NULL,0,ReadThread,hWnd,0,&dwTStat);
		if(hReadThread)
			CloseHandle(hReadThread);	

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

BOOL CArgoxtestDlg::Argox_Init(CString port,int BaudRate)
{
	DCB dcb;	
	
	hCom=CreateFile(port,//COM3口
		GENERIC_READ|GENERIC_WRITE, //允许读和写
		0, //独占方式
		NULL,
		OPEN_EXISTING, //打开而不是创建
		FILE_ATTRIBUTE_NORMAL|FILE_FLAG_OVERLAPPED, //重叠方式
		NULL);
	if(hCom==(HANDLE)-1)
	{
		AfxMessageBox(_T("打开COM失败!"));
		return FALSE;
	}

	SetupComm(hCom,512,512); //输入缓冲区和输出缓冲区的大小都是512

	COMMTIMEOUTS TimeOuts;
	//设定读超时
	TimeOuts.ReadIntervalTimeout=MAXDWORD;
	TimeOuts.ReadTotalTimeoutMultiplier=0;
	TimeOuts.ReadTotalTimeoutConstant=0;
	//在读一次输入缓冲区的内容后读操作就立即返回，
	//而不管是否读入了要求的字符。


	//设定写超时
	TimeOuts.WriteTotalTimeoutMultiplier=100;
	TimeOuts.WriteTotalTimeoutConstant=500;
	SetCommTimeouts(hCom,&TimeOuts); //设置超时


	GetCommState(hCom,&dcb);
	dcb.BaudRate=9600; //波特率为9600
	dcb.ByteSize=8; //每个字节有8位
	dcb.Parity=NOPARITY; //无奇偶校验位
	dcb.StopBits=ONESTOPBIT; //两个停止位

	dcb.fOutxCtsFlow = TRUE; //串行端口的输出由CTS线控制 
	dcb.fOutxDsrFlow = FALSE; //关闭串行端口的DSR流控制 
	dcb.fDtrControl = DTR_CONTROL_ENABLE; //启用DTR线 
	//dcb.fDsrSensitivity = FALSE; //如果设为TRUE将忽略任何输入的字节，除非DSR线被启用 
	dcb.fTXContinueOnXoff = FALSE; //当为TRUE时，如果接收缓冲区已满且驱动程序已传送XOFF字符，将使驱动程序停止传输字符 
	dcb.fTXContinueOnXoff = FALSE; 
	dcb.fOutX = FALSE; //设为TRUE指定XON/XOFF控制被用于控制串行输出 
	dcb.fInX = FALSE; //设为TRUE指定XON/XOFF控制被用于控制串行输入 
	dcb.fErrorChar = FALSE; //WINCE串行驱动程序的默认执行将忽略这个字段 
	dcb.fNull = FALSE; //设为TRUE将使串行驱动程序忽略收到的空字节 
	dcb.fRtsControl = RTS_CONTROL_ENABLE; //启用RTS线 
	
	SetCommState(hCom,&dcb);

	PurgeComm(hCom,PURGE_TXCLEAR|PURGE_RXCLEAR);
	return TRUE;
}

void CArgoxtestDlg::OnButtonExit() 
{
	// TODO: Add your control notification handler code here
	SendMessage(WM_Close,0,0);	
}

DWORD ReadThread(PVOID pArg)
{
    HWND hWnd;
    INT cBytes, i;
    BYTE szText[256], *pPtr;
    TCHAR tch;

    hWnd = (HWND)pArg;
    while (1) {
        tch = 0;
        pPtr = szText;
        for (i = 0; i < sizeof (szText)-sizeof (TCHAR); i++) {

            while (!ReadFile (hCom, pPtr, 1, &cBytes, 0))
                if (hCom == INVALID_HANDLE_VALUE)
                    return 0;

            // This syncs the proper byte order for Unicode.
            tch = (tch << 8) & 0xff00;
            tch |= *pPtr++;
            if (tch == TEXT ('\n'))
                break;
        }
        *pPtr++ = 0;  // Avoid alignment probs by addressing as bytes.
        *pPtr++ = 0;

        // If out of byte sync, move bytes down one.
        if (i % 2) {
            pPtr = szText;
            while (*pPtr || *(pPtr+1)) {
                *pPtr = *(pPtr+1);
                pPtr++;
            }
            *pPtr = 0;
        }

    }
    return 0;
}