1.串口读来的是字符,转化成数字?
2.读串口缓冲区,需要一个数组记录读到的每个数据,这个数组放在view类 还是doc类中?
3.我在对话框中绘图,如何能让对话框类使用我得到的数组?
2.读串口缓冲区,需要一个数组记录读到的每个数据,这个数组放在view类 还是doc类中?
3.我在对话框中绘图,如何能让对话框类使用我得到的数组?
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2,在App中吧
3,theApp.数组
1.在view类OnTimer()中实现绘图 ,但是接不到数据
void CTTYView::OnTimer(UINT nIDEvent)
{
// TODO: Add your message handler code here and/or call default
CCDrawRate dlg1;
CTTYDoc* pDoc=GetDocument(); pDoc->getxdata ();
pDoc->getydata ();
if(dlg1.DoModal ()==IDOK)
{
if(r>99)
{
r=0;
Invalidate();
}
dlg1.DrawPoint (pDoc->xaxis[r],pDoc->data1[r]);
r++; }
CEditView::OnTimer(nIDEvent);
}
我在线程中设置了SetTimer(1,1000,NULL)。2.我在DOC类中进行数据操作
void CTTYDoc::getydata ()
{
int j;
int jlength;
int nLength;
j=0;
char data[10];
char buf[MAXBLOCK/4];
nLength=ReadComm(buf,100);
for(int l=0;l<nLength;l++)
{
if(47<buf[l]&&buf[l]<58)
data[j]=buf[l];
j++;
jlength=j-1; }
for (int k;k<jlength+1;k+=4)
{
data1[m]=(data[k]-'0')*10+(data[k+1]-'0')+(data[k+2]-'0')*0.1+(data[k+3]-'0')*0.01;
m++;
}}
void CTTYDoc::getxdata()
{
for (int i=0;i<100;i++)
xaxis[i]=5+i*4;
}3.为什么不能接受数据,我还有哪里没考虑到?
2:如果这个数据在多个类的用到可以设置成全局变量,放到APP中也可以,因为在任何类中都可以用AfxGetApp()访问这个数据。
3:这个方法就多了,可以全局访问,可以把数组作为参数传进来
LZ给的代码是绘图部分的,跟为什么不能接受数据有什么关系?断点调试下数据的流向,看到哪一部分就丢失了。
-6.277438562...e+66 说明是错的 但是不会改.。
肯定是错的 但是咋改呢?
邮箱? 给我下
代码不管是放在doc还是view还是app,其实是一样的,无非是跨类调用
不知道你在哪个线程里面调用SetTimer的?另外每次OnTimer都会调用一次DoModal()会有问题的。
// TTYView.cpp : implementation of the CTTYView class
//#include "stdafx.h"
#include "TTY.h"
#include "TTYDoc.h"
#include "TTYView.h"
#include "CDrawRate.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif/////////////////////////////////////////////////////////////////////////////
// CTTYViewIMPLEMENT_DYNCREATE(CTTYView, CEditView)BEGIN_MESSAGE_MAP(CTTYView, CEditView)
//{{AFX_MSG_MAP(CTTYView)
ON_WM_CHAR()
ON_WM_TIMER()
//}}AFX_MSG_MAP
// Standard printing commands
ON_COMMAND(ID_FILE_PRINT, CEditView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, CEditView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CEditView::OnFilePrintPreview)
ON_MESSAGE(WM_COMMNOTIFY, OnCommNotify)
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CTTYView construction/destructionCTTYView::CTTYView()
{
// TODO: add construction code here}CTTYView::~CTTYView()
{
}BOOL CTTYView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs BOOL bPreCreated = CEditView::PreCreateWindow(cs);
cs.style &= ~(ES_AUTOHSCROLL|WS_HSCROLL); // Enable word-wrapping return bPreCreated;
}/////////////////////////////////////////////////////////////////////////////
// CTTYView drawingvoid CTTYView::OnDraw(CDC* pDC)
{
CTTYDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
pDC->TextOut(200,200,pDoc->aaa);
}/////////////////////////////////////////////////////////////////////////////
// CTTYView printingBOOL CTTYView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default CEditView preparation
return CEditView::OnPreparePrinting(pInfo);
}void CTTYView::OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo)
{
// Default CEditView begin printing.
CEditView::OnBeginPrinting(pDC, pInfo);
}void CTTYView::OnEndPrinting(CDC* pDC, CPrintInfo* pInfo)
{
// Default CEditView end printing
CEditView::OnEndPrinting(pDC, pInfo);
}/////////////////////////////////////////////////////////////////////////////
// CTTYView diagnostics#ifdef _DEBUG
void CTTYView::AssertValid() const
{
CEditView::AssertValid();
}void CTTYView::Dump(CDumpContext& dc) const
{
CEditView::Dump(dc);
}CTTYDoc* CTTYView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CTTYDoc)));
return (CTTYDoc*)m_pDocument;
}
#endif //_DEBUG/////////////////////////////////////////////////////////////////////////////
// CTTYView message handlers
void CTTYView::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
// TODO: Add your message handler code here and/or call default
CTTYDoc* pDoc=GetDocument();
char c=(char)nChar; AfxMessageBox("键盘字符收到",MB_OK,0); if(!pDoc->m_bConnected)
return; AfxMessageBox("应经连接了",MB_OK,0); pDoc->WriteComm(&c, 1); if(pDoc->m_bEcho)
CEditView::OnChar(nChar, nRepCnt, nFlags); // 本地回显
}
LRESULT CTTYView::OnCommNotify(WPARAM wParam, LPARAM lParam)
{
// AfxMessageBox("接受到数据",MB_OK,0); char buf[MAXBLOCK/4];
CString str;
int nLength, nTextLength;
CTTYDoc* pDoc=GetDocument(); CEdit& edit=GetEditCtrl(); if(!pDoc->m_bConnected || (wParam & EV_RXCHAR)!=EV_RXCHAR) // 是否是EV_RXCHAR事件?
{
SetEvent(pDoc->m_hPostMsgEvent); // 允许发送下一个WM_COMMNOTIFY消息
return 0L;
} nLength=pDoc->ReadComm(buf,100);
pDoc->aaa.Format("%d",lParam);
if(nLength)
{
nTextLength=edit.GetWindowTextLength();
edit.SetSel(nTextLength,nTextLength); //移动插入光标到正文末尾
for(int i=0;i<nLength;i++)
{ switch(buf[i])
{ case '\r': // 回车
if(!pDoc->m_bNewLine)
break; case '\n': // 换行
str+="\r\n";
break; case '\b': // 退格
edit.SetSel(-1, 0);
edit.ReplaceSel(str);
nTextLength=edit.GetWindowTextLength();
edit.SetSel(nTextLength-1,nTextLength);
edit.ReplaceSel(""); //回退一个字符
str="";
break; case '\a': // 振铃
MessageBeep((UINT)-1);
break; default :
str+=buf[i];
}
}
edit.SetSel(-1, 0);
edit.ReplaceSel(str); // 向编辑视图中插入收到的字符
}/* CCDrawRate dlg1;
if(dlg1.DoModal ()==IDOK)
{
dlg1.DrawPoint (); }*/
SetTimer(1,1000,NULL);
SetEvent(pDoc->m_hPostMsgEvent); // 允许发送下一个WM_COMMNOTIFY消息
return 0L;
}
void CTTYView::OnTimer(UINT nIDEvent)
{
// TODO: Add your message handler code here and/or call default
CCDrawRate dlg1;
CTTYDoc* pDoc=GetDocument(); pDoc->getxdata ();
pDoc->getydata ();
if(dlg1.DoModal ()==IDOK)
{
if(r>99)
{
r=0;
Invalidate();
}
dlg1.DrawPoint (pDoc->xaxis[r],pDoc->data1[r]);
r++; }
CEditView::OnTimer(nIDEvent)
}
}
//////////////////////////////////////////////////////////////////////////////////////
// TTYDoc.cpp : implementation of the CTTYDoc class
//#include "stdafx.h"
#include "TTY.h"
#include "commsetDlg.h"
#include "TTYDoc.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif/////////////////////////////////////////////////////////////////////////////
/
//{{AFX_MSG_MAP(CTTYDoc)
ON_COMMAND(ID_API_CONNECT, OnApiConnect)
ON_UPDATE_COMMAND_UI(ID_API_CONNECT, OnUpdateApiConnect)
ON_COMMAND(ID_API_DISCONNECT, OnApiDisconnect)
ON_UPDATE_COMMAND_UI(ID_API_DISCONNECT, OnUpdateApiDisconnect)
ON_COMMAND(ID_API_SETTINGS, OnApiSettings)
ON_UPDATE_COMMAND_UI(ID_API_SETTINGS, OnUpdateApiSettings)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CTTYDoc construction/destructionCTTYDoc::CTTYDoc()
{
// TODO: add one-time construction code here
//初始化操作
m_bConnected=FALSE;//断开连接菜单项无效
m_pThread=NULL; m_nBaud = 9600;
m_nDataBits = 8;
m_bEcho = FALSE;
m_bNewLine = FALSE;
m_nParity = 0;
m_sPort = "COM2";
m_nStopBits = 0;
aaa=_T("");
}CTTYDoc::~CTTYDoc()
{
//程序结束时删除线程、关闭串口的操作
if(m_bConnected)
CloseConnection(); // 删除事件句柄
if(m_hPostMsgEvent)
CloseHandle(m_hPostMsgEvent); if(m_osRead.hEvent)
CloseHandle(m_osRead.hEvent); if(m_osWrite.hEvent)
CloseHandle(m_osWrite.hEvent);
}BOOL CTTYDoc::OnNewDocument()
{
//AfxMessageBox("创建新文件",MB_OK,0);
if (!CDocument::OnNewDocument())
return FALSE; ((CEditView*)m_viewList.GetHead())->SetWindowText(NULL);
// TODO: add reinitialization code here
// (SDI documents will reuse this document)
// 为WM_COMMNOTIFY消息创建事件对象,手工重置,初始化为有信号的
if((m_hPostMsgEvent=CreateEvent(NULL, TRUE, TRUE, NULL))==NULL)
return FALSE; memset(&m_osRead, 0, sizeof(OVERLAPPED));
memset(&m_osWrite, 0, sizeof(OVERLAPPED)); // 为重叠读创建事件对象,手工重置,初始化为无信号的
if((m_osRead.hEvent=CreateEvent(NULL, TRUE, FALSE, NULL))==NULL)
return FALSE; // 为重叠写创建事件对象,手工重置,初始化为无信号的
if((m_osWrite.hEvent=CreateEvent(NULL, TRUE, FALSE, NULL))==NULL)
return FALSE;
return TRUE;
}/////////////////////////////////////////////////////////////////////////////
// CTTYDoc serializationvoid CTTYDoc::Serialize(CArchive& ar)
{
// CEditView contains an edit control which handles all serialization
((CEditView*)m_viewList.GetHead())->SerializeRaw(ar);
}/////////////////////////////////////////////////////////////////////////////
// CTTYDoc diagnostics#ifdef _DEBUG
void CTTYDoc::AssertValid() const
{
CDocument::AssertValid();
}void CTTYDoc::Dump(CDumpContext& dc) const
{
CDocument::Dump(dc);
}
#endif //_DEBUG/////////////////////////////////////////////////////////////////////////////
// CTTYDoc commandsBOOL CTTYDoc::CanCloseFrame(CFrameWnd* pFrame)
{
// TODO: Add your specialized code here and/or call the base class
SetModifiedFlag(FALSE); // 将文档的修改标志设置成未修改
return CDocument::CanCloseFrame(pFrame);
}// 工作者线程,负责监视串行口
UINT CommProc(LPVOID pParam)
{
// AfxMessageBox("监视线程开始",MB_OK,0); OVERLAPPED os;
DWORD dwMask, dwTrans;
COMSTAT ComStat;
DWORD dwErrorFlags; CTTYDoc *pDoc=(CTTYDoc*)pParam; memset(&os, 0, sizeof(OVERLAPPED));
os.hEvent=CreateEvent(NULL, TRUE, FALSE, NULL);
// AfxMessageBox("线程运行标记1",MB_OK,0); if(os.hEvent==NULL)
{
AfxMessageBox("Can't create event object!");
return (UINT)-1;
} // AfxMessageBox("线程运行标记2",MB_OK,0); while(pDoc->m_bConnected)
{
// AfxMessageBox("循环开始",MB_OK,0); ClearCommError(pDoc->m_hCom,&dwErrorFlags,&ComStat); // AfxMessageBox("线程运行标记3",MB_OK,0); if(ComStat.cbInQue)
{
// AfxMessageBox("线程运行标记4",MB_OK,0);
// 无限等待WM_COMMNOTIFY消息被处理完
WaitForSingleObject(pDoc->m_hPostMsgEvent, INFINITE);
ResetEvent(pDoc->m_hPostMsgEvent); // 通知视图
PostMessage(pDoc->m_hTermWnd, WM_COMMNOTIFY, EV_RXCHAR, 100); continue;
} dwMask=0; // AfxMessageBox("线程运行标记5",MB_OK,0); if(!WaitCommEvent(pDoc->m_hCom, &dwMask, &os)) // 重叠操作
{ if(GetLastError()==ERROR_IO_PENDING)
// 无限等待重叠操作结果
GetOverlappedResult(pDoc->m_hCom, &os, &dwTrans, TRUE);
else
{
CloseHandle(os.hEvent);
return (UINT)-1;
}
}
} CloseHandle(os.hEvent);
return 0;
}// 将指定数量的字符从串行口输出
DWORD CTTYDoc::WriteComm(char *buf, DWORD dwLength)
{
// AfxMessageBox("写串口了",MB_OK,0); BOOL fState;
DWORD length=dwLength;
COMSTAT ComStat;
DWORD dwErrorFlags; ClearCommError(m_hCom,&dwErrorFlags,&ComStat);
fState=WriteFile(m_hCom,buf,length,&length,&m_osWrite);
if(!fState)
{ if(GetLastError()==ERROR_IO_PENDING)
{
GetOverlappedResult(m_hCom,&m_osWrite,&length,TRUE);// 等待
}
else
length=0;
} return length;
}// 从串行口输入缓冲区中读入指定数量的字符
DWORD CTTYDoc::ReadComm(char *buf, DWORD dwLength)
{
DWORD length=0;
COMSTAT ComStat;
DWORD dwErrorFlags; ClearCommError(m_hCom,&dwErrorFlags,&ComStat);
length=min(dwLength, ComStat.cbInQue);
ReadFile(m_hCom,buf,length,&length,&m_osRead);
return length;
}//菜单项"串口连接"的响应
void CTTYDoc::OnApiConnect()
{
// TODO: Add your command handler code here
if(!OpenConnection())
AfxMessageBox("Can't open connection");
}//更新"串口连接"菜单项
void CTTYDoc::OnUpdateApiConnect(CCmdUI* pCmdUI)
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(!m_bConnected);
}//菜单项"断开连接"的响应函数
void CTTYDoc::OnApiDisconnect()
{
// TODO: Add your command handler code here
CloseConnection();
}//更新菜单项"断开连接"
void CTTYDoc::OnUpdateApiDisconnect(CCmdUI* pCmdUI)
{
// TODO: Add your command update UI handler code here
pCmdUI->Enable(m_bConnected);
}//菜单项"串行口设置" 的响应函数
void CTTYDoc::OnApiSettings()
{
// TODO: Add your command handler code here
CCommSetDlg dlg;
CString str; AfxMessageBox("串口设置",MB_OK,0); dlg.m_bConnected = m_bConnected; dlg.m_sPort = m_sPort; str.Format("%d", m_nBaud);
dlg.m_sBaud = str; str.Format("%d", m_nDataBits);
dlg.m_sDataBits = str; dlg.m_nParity = m_nParity;
dlg.m_nStopBits = m_nStopBits;
dlg.m_bEcho = m_bEcho;
dlg.m_bNewLine = m_bNewLine; if(dlg.DoModal() == IDOK)
{
m_sPort = dlg.m_sPort;
m_nBaud = atoi(dlg.m_sBaud);
m_nDataBits = atoi(dlg.m_sDataBits);
m_nParity = dlg.m_nParity;
m_nStopBits = dlg.m_nStopBits;
m_bEcho=dlg.m_bEcho;
m_bNewLine=dlg.m_bNewLine; if(m_bConnected)
if(!ConfigConnection())
AfxMessageBox("Can't realize the settings!");
}
}//更新"串行口设置"菜单项
void CTTYDoc::OnUpdateApiSettings(CCmdUI* pCmdUI)
{
// TODO: Add your command update UI handler code here
}
//配置串口连接
BOOL CTTYDoc::ConfigConnection()
{
DCB dcb; AfxMessageBox("配置连接",MB_OK,0); if(!GetCommState(m_hCom, &dcb))
return FALSE; dcb.fBinary=TRUE;
dcb.BaudRate = m_nBaud; // 数据传输速率
dcb.ByteSize = m_nDataBits; // 每字节位数
dcb.fParity = TRUE; switch(m_nParity) // 校验设置
{
case 0:
dcb.Parity=NOPARITY;
break; case 1:
dcb.Parity=EVENPARITY;
break; case 2:
dcb.Parity=ODDPARITY;
break; default:;
} switch(m_nStopBits) // 停止位
{
case 0:
dcb.StopBits=ONESTOPBIT;
break; case 1:
dcb.StopBits=ONE5STOPBITS;
break; case 2:
dcb.StopBits=TWOSTOPBITS;
break; default:;
} // 硬件流控制设置
dcb.fOutxCtsFlow = TRUE;
dcb.fRtsControl = TRUE; // XON/XOFF流控制设置
dcb.fInX=dcb.fOutX = TRUE;
dcb.XonChar = XON;
dcb.XoffChar = XOFF;
dcb.XonLim = 50;
dcb.XoffLim = 50; return SetCommState(m_hCom, &dcb);
}// 打开并配置串行口,建立工作者线程
BOOL CTTYDoc::OpenConnection()
{
AfxMessageBox("打开连接",MB_OK,0); COMMTIMEOUTS TimeOuts;
POSITION firstViewPos;
CView *pView; firstViewPos=GetFirstViewPosition();
pView=GetNextView(firstViewPos); m_hTermWnd=pView->GetSafeHwnd(); if(m_bConnected)
return FALSE; m_hCom=CreateFile(m_sPort, GENERIC_READ | GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED,
NULL); // 重叠方式 if(m_hCom==INVALID_HANDLE_VALUE)
return FALSE; SetupComm(m_hCom,MAXBLOCK,MAXBLOCK);
SetCommMask(m_hCom, EV_RXCHAR);
// 把间隔超时设为最大,把总超时设为0将导致ReadFile立即返回并完成操作
TimeOuts.ReadIntervalTimeout=MAXDWORD;
TimeOuts.ReadTotalTimeoutMultiplier=0;
TimeOuts.ReadTotalTimeoutConstant=0; /* 设置写超时以指定WriteComm成员函数中的GetOverlappedResult函数的等待时间*/
TimeOuts.WriteTotalTimeoutMultiplier=50;
TimeOuts.WriteTotalTimeoutConstant=2000; SetCommTimeouts(m_hCom, &TimeOuts); if(ConfigConnection())
{ m_pThread=AfxBeginThread(CommProc, this, THREAD_PRIORITY_NORMAL,
0, CREATE_SUSPENDED, NULL); // 创建并挂起线程 if(m_pThread==NULL)
{
CloseHandle(m_hCom);
return FALSE;
}
else {
m_bConnected=TRUE;
m_pThread->ResumeThread(); // 恢复线程运行
}
}
else
{
CloseHandle(m_hCom);
return FALSE;
}
return TRUE;
}//关闭连接,关闭工作线程
void CTTYDoc::CloseConnection()
{
if(!m_bConnected)
return; m_bConnected=FALSE; //结束CommProc线程中WaitSingleObject函数的等待
SetEvent(m_hPostMsgEvent); //结束CommProc线程中WaitCommEvent的等待
SetCommMask(m_hCom, 0); //等待辅助线程终止
WaitForSingleObject(m_pThread->m_hThread, INFINITE);
m_pThread=NULL;
CloseHandle(m_hCom);}
void CTTYDoc::getydata ()
{
int j;
int jlength;
int nLength;
j=0;
char data[10];
char buf[MAXBLOCK/4];
nLength=ReadComm(buf,100);
for(int l=0;l<nLength;l++)
{
if(47<buf[l]&&buf[l]<58)
data[j]=buf[l];
j++;
jlength=j-1; }
for (int k;k<jlength+1;k+=4)
{
data1[m]=(data[k]-'0')*10+(data[k+1]-'0')+(data[k+2]-'0')*0.1+(data[k+3]-'0')*0.01;
m++;
}}
void CTTYDoc::getxdata()
{
for (int i=0;i<100;i++)
xaxis[i]=5+i*4;
} 抛砖引玉,希望大家元旦快乐。