rs232_vcdlg.cpp

单片机应用源码,包括各种简单操作

// RS232_VCDlg.cpp : implementation file
//

#include "stdafx.h"
#include "RS232_VC.h"
#include "RS232_VCDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CRS232_VCDlg dialog

CRS232_VCDlg::CRS232_VCDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CRS232_VCDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CRS232_VCDlg)
	m_str_send = _T("");
	m_str_recv = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CRS232_VCDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CRS232_VCDlg)
	DDX_Control(pDX, IDC_HEX, m_hex);
	DDX_Control(pDX, IDC_MSCOMM, m_mscomm);
	DDX_Text(pDX, IDC_EDIT_SEND, m_str_send);
	DDX_Text(pDX, IDC_EDIT_RECV, m_str_recv);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CRS232_VCDlg, CDialog)
	//{{AFX_MSG_MAP(CRS232_VCDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(ID_SEND, OnSend)
	ON_BN_CLICKED(ID_CLR, OnClr)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRS232_VCDlg message handlers

BOOL CRS232_VCDlg::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

	if(m_mscomm.GetPortOpen())    // 如果串口已打开，则关闭串口
		m_mscomm.SetPortOpen(FALSE);

	m_mscomm.SetCommPort(2);    // 选择COM2
	if(!m_mscomm.GetPortOpen())
		m_mscomm.SetPortOpen(TRUE);    // 打开串口
	else
		AfxMessageBox("serial port open error");

	m_mscomm.SetSettings("9600,n,8,1");    // 设置波特率9600，无校验，8位数据位，1位停止位
	m_mscomm.SetRThreshold(1);    // 串口接收缓冲区中有多于或等于1个字符时将产生接收数据的OnComm事件
	m_mscomm.SetInputLen(0);    // 设置当前接收区数据长度为0
	m_mscomm.GetInput();    // 预读缓冲区以清除残留数据

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

void CRS232_VCDlg::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 CRS232_VCDlg::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 CRS232_VCDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CRS232_VCDlg::OnSend() 
{
	// TODO: Add your control notification handler code here
	
	if(m_hex.GetCheck())    // 检查单选框内容
	{
		CByteArray hexdata;
		int len=String2Hex(m_str_send,hexdata);    // 将16进制格式的字符串转换为CByteArray类
		m_mscomm.SetOutput(COleVariant(hexdata));    // 发送十六进制数据

	}
	else
		m_mscomm.SetOutput(COleVariant(m_str_send));    // 发送字符串;
}

void CRS232_VCDlg::OnClr() 
{
	// TODO: Add your control notification handler code here

	m_str_send = "";    // 清空发送文本框
	m_str_recv = "";    // 清空接收文本框

	UpdateData(FALSE);    // 更新文本框内容

}

BEGIN_EVENTSINK_MAP(CRS232_VCDlg, CDialog)
    //{{AFX_EVENTSINK_MAP(CRS232_VCDlg)
	ON_EVENT(CRS232_VCDlg, IDC_MSCOMM, 1 /* OnComm */, OnComm, VTS_NONE)
	//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()

void CRS232_VCDlg::OnComm() 
{
	// TODO: Add your control notification handler code here

	VARIANT variant_tmp;    // 建立转换数据类型用到的变量
    COleSafeArray safearray_tmp;
    LONG len,i;
    BYTE buf[2048];
    CString str_tmp;
    
	if(m_mscomm.GetCommEvent() == 2)    // 接收缓冲区内有字符
    {             
        variant_tmp = m_mscomm.GetInput();    // 读缓冲区
        
		safearray_tmp = variant_tmp;    // 转换为ColeSafeArray型变量
        len = safearray_tmp.GetOneDimSize();
        for(i=0; i<len; i++)    // 转换为BYTE型数组
            safearray_tmp.GetElement(&i,buf+i);    
        for(i=0;i<len;i++)    // 转换为Cstring型变量
        {
            BYTE ch = *(char*)(buf+i);

            if(m_hex.GetCheck())    // 检查单选框内容
				str_tmp.Format("%02X ", ch);    // 将字符以十六进制方式显示
			else 
				str_tmp.Format("%c", ch);    // 将字符以ASCII方式显示
            
			m_str_recv += str_tmp;    // 加入接收数据框对应字符串 
        }
    }

    UpdateData(FALSE);    // 更新接收数据框内容	

}

/* 将输入的形如 0A 0B 0C... 之类的字串转换为CByteArray类型，返回值为CByteArray的长度 */
int CRS232_VCDlg::String2Hex(CString str, CByteArray &senddata)
{
	int hexdata,lowhexdata;
	int hexdatalen = 0;
	int len = str.GetLength();
	
	senddata.SetSize(len/2);
	for(int i=0; i<len; )
	{
		char lstr,hstr=str[i];
		if(hstr==' ')
		{
			i++;
			continue;
		}
		i++;
		if(i >= len)
			break;
		lstr = str[i];
		hexdata = ConvertHexChar(hstr);
		lowhexdata = ConvertHexChar(lstr);
		if((hexdata==16) || (lowhexdata==16))
			break;
		else 
			hexdata = hexdata*16+lowhexdata;
		i++;
		senddata[hexdatalen] = (char)hexdata;
		hexdatalen++;
	}
	senddata.SetSize(hexdatalen);

	return hexdatalen;
}

char CRS232_VCDlg::ConvertHexChar(char ch)
{
	if((ch>='0') && (ch<='9'))
		return ch-0x30;
	else if((ch>='A') && (ch<='F'))
		return ch-'A'+10;
	else if((ch>='a') && (ch<='f'))
		return ch-'a'+10;
	else return (-1);
}