📄 readcomdlg.cpp
字号:
// ReadComDlg.cpp : implementation file
//
#include "stdafx.h"
#include "ReadCom.h"
#include "ReadComDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
//变量iStatus标识当前操作状态，0－无操作，1－等待接收长度，2－等待接收数据
int iStatus;
//dataLen为接收数据长度，count为重发得次数
short dataLen,count;
/////////////////////////////////////////////////////////////////////////////
// CReadComDlg dialog
CReadComDlg::CReadComDlg(CWnd* pParent /*=NULL*/)
: CDialog(CReadComDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CReadComDlg)
m_Edit = _T("");
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CReadComDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CReadComDlg)
DDX_Control(pDX, IDC_BUTTON_Read, m_Read);
DDX_Text(pDX, IDC_EDIT1, m_Edit);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CReadComDlg, CDialog)
//{{AFX_MSG_MAP(CReadComDlg)
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON_Read, OnBUTTONRead)
ON_WM_TIMER()
ON_BN_CLICKED(IDC_BUTTON, OnButton)
ON_WM_CLOSE()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CReadComDlg message handlers
BOOL CReadComDlg::OnInitDialog()
{
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
// TODO: Add extra initialization here
DWORD style=WS_VISIBLE|WS_CHILD;
if(!myComm.Create(NULL,style,CRect(0,0,0,0),this,IDC_MSCOMM1))
{
AfxMessageBox("创建MSComm控件失败！");
return FALSE;
}
else
{
myComm.SetCommPort(3); //指定串口号
myComm.SetSettings("115200,n,8,1"); //通信参数设置
myComm.SetInBufferCount(0); //清空接收缓冲区
myComm.SetInBufferSize(1024); //指定接收缓冲区大小
myComm.SetInputMode(1); //设置数据获取方式
myComm.SetInputLen(0); //设置每次读取长度，0为全部读取
myComm.SetRThreshold(1); //设置接收OnComm事件字符门限值
myComm.SetPortOpen(1); //打开串口
AfxMessageBox("串口打开成功！");
}
return TRUE; // return TRUE unless you set the focus to a control
}
// 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 CReadComDlg::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 CReadComDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CReadComDlg::OnBUTTONRead()
{
// TODO: Add your control notification handler code here
char myChar[20];
CByteArray Array1; //创建存放二进制数据得CByteArray类得 实例
if(iStatus==0) //当iStatus为无操作状态时才执行
{
Array1.RemoveAll(); //清空字节数组
Array1.SetSize(1); //设置字节数组长度为1
Array1.SetAt(0,05); //设置第0个位置的数值为5
myComm.SetOutput(COleVariant(Array1)); //发送Array1数组
m_Edit+="<--ENQ "; //显示操作信息
_strdate(myChar);
m_Edit+=myChar;
m_Edit+=" ";
_strtime(myChar);
m_Edit+=myChar;
m_Edit+=m_Edit+"\15\12"; //加入回车换行
UpdateData(false); //更新显示数据
CEdit *pEdit=(CEdit*)GetDlgItem(IDC_EDIT1); //使编辑框内容滚动到底部
pEdit->LineScroll(pEdit->GetLineCount());
m_Read.EnableWindow(false); //使【读数据】按钮无效
SetTimer(1,1000,NULL); //启动定时器状态1，定时值1000ms
iStatus=1; //将操作状态改为1
}
}
BEGIN_EVENTSINK_MAP(CReadComDlg, CDialog)
//{{AFX_EVENTSINK_MAP(CReadComDlg)
ON_EVENT(CReadComDlg, IDC_MSCOMM1, 1 /* OnComm */, OnOnCommMscomm1, VTS_NONE)
//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()
void CReadComDlg::OnOnCommMscomm1()
{
// TODO: Add your control notification handler code here
int inCount,overCount;
char myChar[20];
CString myStr;
VARIANT input1;
BYTE rxdata[2048];
long len1,k,i,sum;
COleSafeArray safearray1;
CByteArray Array1;
switch(myComm.GetCommEvent())
{
case 2:
switch(iStatus) //根据不同状态采取不同方法
{
case 1:
{
KillTimer(1);//停止超时定时器1
overCount=0; //超时延长次数清零
while(overCount<=10)
{
//获取接收缓冲取字符个数
inCount=myComm.GetInBufferCount();
if(inCount>=3) break;
Sleep(200);
overCount++;
}
if(overCount>=11) //出现超时
{
m_Edit+="超时错误！";
m_Edit+="\15\12";
UpdateData(false);
Beep(1000,50); //错误声音提示
//获取编辑框的 指针，并将滚动条滚动到底部
CEdit *pEdit=(CEdit*)GetDlgItem(IDC_EDIT1); //使编辑框内容滚动到底部
pEdit->LineScroll(pEdit->GetLineCount());
iStatus=0;
m_Read.EnableWindow(true); //使【读数据】按钮有效
myComm.SetInBufferCount(0);
myComm.SetOutBufferCount(0);
break;
}
else
{
input1=myComm.GetInput();
safearray1=input1;
len1=safearray1.GetOneDimSize();
for(k=0;k<len1;k++)
safearray1.GetElement(&k,rxdata+k);
m_Edit+="-->";
for(i=0;i<=2;i++) //显示收到的3个字符
{
_itoa(rxdata[i],myChar,10);
myStr+=myChar;
myStr+="|";
}
m_Edit+=myStr;
UpdateData(false);
m_Edit+="\15\12";
if((rxdata[0]==6) && ((rxdata[1]+rxdata[2])==255))
{
dataLen=rxdata[1]; //保存数据长度值
//发出正确相应ACK（06）
count=0;
Array1.RemoveAll(); //清空字节数组
Array1.SetSize(1); //设置字节数组长度为1
Array1.SetAt(0,06); //设置第0个位置的数值为6
myComm.SetOutput(COleVariant(Array1)); //发送Array1数组
m_Edit+="<--ACK";
UpdateData(false);
m_Edit=m_Edit+"\15\12";
iStatus=2; //修改接收状态到下一个状态
SetTimer(1,1000,NULL); //启动定时器1
}
else
{
//发出重发响应NAK(21)
count++;
if(count>=3) //判断重发次数
{
m_Edit="重发次数超过3次";
UpdateData(false);
Beep(1000,50);
CEdit *pEdit=(CEdit*)GetDlgItem(IDC_EDIT1); //使编辑框内容滚动到底部
pEdit->LineScroll(pEdit->GetLineCount());
m_Edit=m_Edit+"\15\12";
iStatus=0;
m_Read.EnableWindow(true);
myComm.SetInBufferCount(0);
myComm.SetOutBufferCount(0);
count=0;
break;
}
Array1.RemoveAll(); //清空字节数组
Array1.SetSize(1); //设置字节数组长度为1
Array1.SetAt(0,21); //设置第0个位置的数值为21
myComm.SetOutput(COleVariant(Array1)); //发送Array1数组
m_Edit+="<--NAK";
UpdateData(false);
m_Edit=m_Edit+"\15\12";
iStatus=1;
SetTimer(1,1000,NULL);
}
}
break;
}
case 2:
{
KillTimer(1);
overCount=0;
while(overCount<=10)
{
inCount=myComm.GetInBufferCount();
if(inCount>=dataLen+1) break;
Sleep(200);
overCount++;
}
if(overCount>=11)
{
m_Edit+="超时错误！";
m_Edit+="\15\12";
UpdateData(false);
Beep(1000,50);
CEdit *pEdit=(CEdit*)GetDlgItem(IDC_EDIT1); //使编辑框内容滚动到底部
pEdit->LineScroll(pEdit->GetLineCount());
iStatus=0;
m_Read.EnableWindow(true);
myComm.SetInBufferCount(0);
myComm.SetOutBufferCount(0);
break;
}
else
{
input1=myComm.GetInput();
safearray1=input1;
len1=safearray1.GetOneDimSize();
for(k=0;k<len1;k++)
safearray1.GetElement(&k,rxdata+k);
m_Edit+="-->";
sum=0;
for(i=0;i<=dataLen;i++)
{
_itoa(rxdata[i],myChar,10);
myStr+=myChar;
myStr+="|";
sum+=rxdata[i];
}
sum-=rxdata[dataLen];
sum%=256;
m_Edit+=myStr;
UpdateData(false);
m_Edit+="\15\12";
if(sum==rxdata[dataLen])
{
count=0;
Array1.RemoveAll(); //清空字节数组
Array1.SetSize(1); //设置字节数组长度为1
Array1.SetAt(0,06); //设置第0个位置的数值为6
myComm.SetOutput(COleVariant(Array1)); //发送Array1数组
m_Edit+="<--ACK";
UpdateData(false);
m_Edit=m_Edit+"\15\12";
iStatus=0;
m_Read.EnableWindow(true);
m_Edit=m_Edit+"\15\12";
UpdateData(false);
CEdit *pEdit=(CEdit*)GetDlgItem(IDC_EDIT1); //使编辑框内容滚动到底部
pEdit->LineScroll(pEdit->GetLineCount());
}
else
{
count++;
if(count>=3)
{
m_Edit+="重发次数超过3次！";
UpdateData(false);
Beep(1000,50);
CEdit *pEdit=(CEdit*)GetDlgItem(IDC_EDIT1); //使编辑框内容滚动到底部
pEdit->LineScroll(pEdit->GetLineCount());
m_Edit=m_Edit+"\15\12";
iStatus=0;
m_Read.EnableWindow(true);
myComm.SetInBufferCount(0);
myComm.SetOutBufferCount(0);
count=0;
break;
}
Array1.RemoveAll(); //清空字节数组
Array1.SetSize(1); //设置字节数组长度为1
Array1.SetAt(0,21); //设置第0个位置的数值为21
myComm.SetOutput(COleVariant(Array1)); //发送Array1数组
m_Edit+="<--NAK";
UpdateData(false);
CEdit *pEdit=(CEdit*)GetDlgItem(IDC_EDIT1); //使编辑框内容滚动到底部
pEdit->LineScroll(pEdit->GetLineCount());
m_Edit=m_Edit+"\15\12";
iStatus=2;
SetTimer(1,1000,NULL);
}
}
break;
}
}
break;
}
}
void CReadComDlg::OnTimer(UINT nIDEvent)
{
// TODO: Add your message handler code here and/or call default
m_Edit+="超时错误！";
m_Edit+=m_Edit+"\15\12";
UpdateData(false);
CEdit *pEdit=(CEdit*)GetDlgItem(IDC_EDIT1); //使编辑框内容滚动到底部
pEdit->LineScroll(pEdit->GetLineCount());
m_Read.EnableWindow(true);
KillTimer(1); //关闭定时器
iStatus=0; //将操作状态恢复初始状态
Beep(1000,50); //出错声音提示
CDialog::OnTimer(nIDEvent); //向父类传递该定时消息
}
void CReadComDlg::OnButton()
{
// TODO: Add your control notification handler code here
CDialog::OnCancel();
}
void CReadComDlg::OnClose()
{
// TODO: Add your message handler code here and/or call default
if(myComm.GetPortOpen()) myComm.SetPortOpen(0);
CDialog::OnClose();
}
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -