comdlg.cpp

自己改进的一个串口VC程序,本来是用于对我的DSP板的监测,打开程序后在视图区内单击鼠标左键即可出现通信控制对话框,可选择传送6个不同的监测变量,都是先传送高8位,再传送低8位,很适合作为监测软件

// ComDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MySci2.h"
#include "ComDlg.h"
#include "SetDlg.h"
#include "RecSetDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CComDlg dialog


CComDlg::CComDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CComDlg::IDD, pParent)
{
	m_bSend=false;
	m_bReceive=false;
	m_nRecKind=0;
	m_nPort=1;
	m_strComSet=_T("9600,n,8,1");
	//{{AFX_DATA_INIT(CComDlg)
	m_strReceive = _T("");
	m_strSend = _T("");
	//}}AFX_DATA_INIT

}


void CComDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CComDlg)
	DDX_Control(pDX, IDC_BUTTON_SEND, m_strlSend);
	DDX_Control(pDX, IDC_BUTTON_RECEIVE, m_ctrlReceive);
	DDX_Text(pDX, IDC_EDIT_RECEIVE, m_strReceive);
	DDX_Text(pDX, IDC_EDIT_SEND, m_strSend);
	DDX_Control(pDX, IDC_MSCOMM, m_ctrlCom);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CComDlg, CDialog)
	//{{AFX_MSG_MAP(CComDlg)
	ON_BN_CLICKED(IDC_BUTTON_RECSET, OnButtonRecset)
	ON_BN_CLICKED(IDC_BUTTON_SET, OnButtonSet)
	ON_BN_CLICKED(IDC_BUTTON_CLEAR, OnButtonClear)
	ON_BN_CLICKED(IDC_BUTTON_RECEIVE, OnButtonReceive)
	ON_BN_CLICKED(IDC_BUTTON_SEND, OnButtonSend)
	ON_EN_CHANGE(IDC_EDIT_SEND, OnChangeEditSend)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CComDlg message handlers

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

void CComDlg::OnOnCommMscomm() 
{
// TODO: Add your control notification handler code here
	VARIANT variant_inp;
	COleSafeArray safearray_inp;
	LONG len,k;
	BYTE rxdata[2048]; //设置BYTE数组 An 8-bit integerthat is not signed.
	CString strtemp;
	if(m_bReceive)
	{
		if(m_ctrlCom.GetCommEvent()==2)     //事件值为2表示接收缓冲区内有字符
		{
			variant_inp = m_ctrlCom.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<len;k++)
				safearray_inp.GetElement(&k,rxdata+k);//转换为BYTE型数组
		
			for(k=0;k<len;k++)             //将数组转换为Cstring型变量
			{
				BYTE bt=*(BYTE*)(rxdata+k);      //字符型
				
			
					strtemp.Format("%02X",bt); //将字符以十六进制方式送入临时变量strtemp存放，注意这里加入一个空隔
				m_strReceive += strtemp;    //加入接收编辑框对应字符串    
			}
			m_strReceive += " ";
		}
	}
	UpdateData(FALSE);           //更新编辑框内容	
}

void CComDlg::OnOK() 
{
	// TODO: Add extra validation here
	
	CDialog::OnOK();
}

void CComDlg::OnButtonRecset() 
{
	// TODO: Add your control notification handler code here
	CRecSetDlg dlg;
	dlg.m_nRecKind=m_nRecKind;
	if(dlg.DoModal()==IDOK)
	{
		m_nRecKind=dlg.m_nRecKind;
	}
}

void CComDlg::OnButtonSet() 
{
	// TODO: Add your control notification handler code here
	CSetDlg dlg;
	dlg.m_nPort=m_nPort;
	dlg.m_strComSet=m_strComSet;
	if(dlg.DoModal()==IDOK)
	{
		m_nPort=dlg.m_nPort;
		m_strComSet=dlg.m_strComSet;
	}
}

void CComDlg::OnButtonClear() 
{
	m_strReceive=_T("");
	this->UpdateData(false);
}

void CComDlg::OnButtonReceive() 
{
	// TODO: Add your control notification handler code here
	m_ctrlCom.GetInput();
	m_bReceive = !m_bReceive;
	if(m_bReceive)
		m_ctrlReceive.SetWindowText(_T("停止接收"));
	else
		m_ctrlReceive.SetWindowText(_T("开始接收"));	
}

void CComDlg::OpenPort()
{

	if(m_ctrlCom.GetPortOpen())
		m_ctrlCom.SetPortOpen(FALSE);

	m_ctrlCom.SetCommPort(m_nPort);       //选择com1
	if( !m_ctrlCom.GetPortOpen())
		m_ctrlCom.SetPortOpen(TRUE);//打开串口
	else
		AfxMessageBox("cannot open serial port");

	m_ctrlCom.SetSettings(m_strComSet); //波特率9600，无校验，8个数据位，1个停止位
	m_ctrlCom.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_ctrlCom.SetInputMode(1);
	m_ctrlCom.SetInputLen(0);  //设置当前接收区数据长度为0
	m_ctrlCom.GetInput();//先预读缓冲区以清除残留数据	

}

BOOL CComDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	OpenPort();	
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}
int CComDlg::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;
}

//这是一个将字符转换为相应的十六进制值的函数
//功能：若是在0-F之间的字符，则转换为相应的十六进制字符，否则返回-1
char CComDlg::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);
}



void CComDlg::OnButtonSend() 
{
	    CByteArray hexdata;
		int len=String2Hex(m_strSend ,hexdata);
		m_ctrlCom.SetOutput(COleVariant(hexdata));
}

void CComDlg::OnChangeEditSend() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	CEdit* pEditSend =(CEdit*)GetDlgItem(IDC_EDIT_SEND);
	pEditSend->GetWindowText(m_strSend);
}