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📄 test4231430view.cpp

📁 一个EVC写的关于串口通信的例子,使用modbus协议进行通信,希望对您有所帮助.
💻 CPP
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// Test4231430View.cpp : implementation of the CTest4231430View class
//

#include "stdafx.h"
#include "Test4231430.h"
#define WM_NEW_DATA_ARRIVE WM_USER+1
#include "Test4231430Doc.h"
#include "Test4231430View.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
////////////////////////////////////////////////////////////////////
//全局变量
bool g_sendbool;
int bb;
int viewlen;
char readbuf[50];
char fff[20];
////////////////////////////////////////////////////////////////////
////全局函数
bool  GetCrcCheck(unsigned char *buffer,unsigned char usDataLen,bool checkcmd);

bool  GetCrcCheck(unsigned char *buffer,unsigned char usDataLen,bool checkcmd)
{ 
	unsigned char uchCRCHi = 0xFF ; /* 高CRC字节初始化 */ 
	unsigned char uchCRCLo = 0xFF ; /* 低CRC 字节初始化 */ 
	unsigned char   uIndex,i ;
	unsigned char auchCRCHi[] = { 
		0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 
		0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 
		0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 
		0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 
		0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 
		0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 
		0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 
		0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 
		0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 
		0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 
		0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 
		0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 
		0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 
		0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 
		0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 
		0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 
		0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 
		0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 
		0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 
		0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 
		0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 
		0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 
		0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 
		0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 
		0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 
		0x80, 0x41, 0x00, 0xC1, 0x81, 0x40 
	} ; 
	/* CRC低位字节值表*/ 
	unsigned char auchCRCLo[] = { 
		0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 
		0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 
		0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 
		0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A, 
		0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC, 0x14, 0xD4, 
		0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3, 
		0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 
		0xF2, 0x32, 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 
		0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 
		0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29, 
		0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED, 
		0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26, 
		0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 
		0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 
		0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 
		0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68, 
		0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E, 
		0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5, 
		0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 
		0x70, 0xB0, 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 
		0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 
		0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 
		0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B, 
		0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C, 
		0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 
		0x43, 0x83, 0x41, 0x81, 0x80, 0x40 
	};

	i=0 ;                   /* CRC循环中的索引 */ 
	while (usDataLen--) /* 传输消息缓冲区 */ 
	{ 
		uIndex = uchCRCHi ^ buffer[i++] ; /* 计算CRC */   
		uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex] ; 
		uchCRCLo = auchCRCLo[uIndex] ; 
	} 
	if(checkcmd)
	{	
		buffer[i++]  = uchCRCHi ;
		buffer[i++]	= uchCRCLo ;
		return 1;
	}
	else
	{
		return ((buffer[i++]==uchCRCHi)&&(buffer[i++]== uchCRCLo)); 
	}
}
/////////////////////////////////////////////////////////////////////////////
// CTest4231430View

IMPLEMENT_DYNCREATE(CTest4231430View, CFormView)

BEGIN_MESSAGE_MAP(CTest4231430View, CFormView)
	//{{AFX_MSG_MAP(CTest4231430View)
	ON_BN_CLICKED(IDC_STATIC1, OnStatic1)
	ON_BN_CLICKED(IDC_STATIC2, OnStatic2)
	ON_BN_CLICKED(IDC_STATIC3, OnStatic3)
	ON_BN_CLICKED(IDC_STATIC23, OnStatic23)
	ON_BN_CLICKED(IDC_STATIC24, OnStatic24)
	ON_BN_CLICKED(IDC_STATIC25, OnStatic25)
	ON_BN_CLICKED(IDC_STATIC26, OnStatic26)
	ON_BN_CLICKED(IDC_BUTTON8, OnButton8)
	ON_BN_CLICKED(IDC_BUTTON9, OnButton9)
	ON_BN_CLICKED(IDC_BUTTON10, OnButton10)
	ON_BN_CLICKED(IDC_BUTTON11, OnButton11)
	ON_WM_TIMER()
	ON_WM_DESTROY()
	ON_MESSAGE(WM_NEW_DATA_ARRIVE,OnDataArrivedMsg)
	ON_BN_CLICKED(IDC_BUTTON14, OnButton14)
	ON_BN_CLICKED(IDC_STATIC56, OnStatic56)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTest4231430View construction/destruction

CTest4231430View::CTest4231430View()
	: CFormView(CTest4231430View::IDD)
{
	//{{AFX_DATA_INIT(CTest4231430View)
	m_shuangzi = _T("");
	m_danzi = _T("");
	m_zhi = 0;
	m_value = 0;
	m_mode = _T("");
	//}}AFX_DATA_INIT
	// TODO: add construction code here

}

CTest4231430View::~CTest4231430View()
{
}

void CTest4231430View::DoDataExchange(CDataExchange* pDX)
{
	CFormView::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTest4231430View)
	DDX_Text(pDX, IDC_STATIC26, m_shuangzi);
	DDX_Text(pDX, IDC_STATIC25, m_danzi);
	DDX_Text(pDX, IDC_EDIT2, m_zhi);
	DDX_Text(pDX, IDC_EDIT1, m_value);
	DDX_Text(pDX, IDC_STATIC56, m_mode);
	//}}AFX_DATA_MAP
}

BOOL CTest4231430View::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CFormView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CTest4231430View diagnostics

#ifdef _DEBUG
void CTest4231430View::AssertValid() const
{
	CFormView::AssertValid();
}

void CTest4231430View::Dump(CDumpContext& dc) const
{
	CFormView::Dump(dc);
}

CTest4231430Doc* CTest4231430View::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CTest4231430Doc)));
	return (CTest4231430Doc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CTest4231430View message handlers
void CTest4231430View::OnInitialUpdate() 
{
	CFormView::OnInitialUpdate();
	
	// TODO: Add your specialized code here and/or call the base class
	CenterWindow(GetDesktopWindow());	// center to the hpc screen

	m_pSerial=new CPSerialPort();
	CString PortID;
	PortID = "com1:";

	m_pSerial->OpenPort(PortID,19200,8,1,2,OnDataArrive,(DWORD)this);

	m_pSerial->Activate();//激活接受数据
	SetTimer(1,500,0);
}

void CTest4231430View::OnDataArrive(char *data,int length,DWORD userdata)
{
	CTest4231430View *pWnd=(CTest4231430View *)userdata;
	::SendMessage(pWnd->m_hWnd,WM_NEW_DATA_ARRIVE,(WPARAM)data,LPARAM(length));
}

void CTest4231430View::OnDataArrivedMsg(WPARAM wParam,LPARAM lParam)
{
	//处理收到的数据
	int length=(int)lParam;
	unsigned char *data=(unsigned char*)wParam;

	int i;
	if(length!=0)
	{
		for(i=0;i<length;i++)
		{ 
			readbuf[viewlen++]=data[i];
		}

		if(GetCrcCheck((unsigned char *)readbuf,viewlen-2,0))
			AfxMessageBox(_T("crc ok!"));
	}

}

bool CTest4231430View::m_ModBussend(int cmd, int addr,int len,int *data)
{									//cmd命令  addr地址  len长度  data数值
	DWORD dwBytesWritten;                       
	while(g_sendbool)Sleep(10);//g_sendbool初始化为假false
    Sleep(10);
    
	g_sendbool=true;
	char buf[30];
	int i;
	buf[0]=1;
	buf[1]=cmd;  
	buf[2]=addr>>8;
	buf[3]=addr;
	switch(cmd)
	{
	  case 1: 
		  buf[4]=len>>8;
	      buf[5]=len;
		  i=6;
		  break;
	  case 3:  
		  buf[4]=len>>8;
	      buf[5]=len;
		  i=6;
		  break;
	  case 5:  
		  buf[4]=0;
	      buf[5]=*data;
		  i=6;
		  break;
	  case 6:
		  buf[4]=*data>>8;
	      buf[5]=*data;
	      i=6;
		  break;
	  case 16:	
		  buf[4]=len>>8;
	      buf[5]=len;
		  buf[6]=len*2;
		  i=7;
		 
		  while(len)		        
		  {
			  buf[i++]=*data>>8;
	          buf[i++]=*data++;
		      len--;
		  }		
		  break;
	
	}
	
	GetCrcCheck((unsigned char *)buf,i,1);
	
	viewlen=0;
	
	dwBytesWritten=m_pSerial->WritePort(buf,i+2);
	if(dwBytesWritten==0)
	{
		AfxMessageBox(_T("无法向端口写入数据!"));
	}
	
	g_sendbool=FALSE;
	return 0;
 }

void CTest4231430View::OnStatic1() //X坐标
{
	// TODO: Add your control notification handler code here
	
}

void CTest4231430View::OnStatic2()//Y坐标 
{
	// TODO: Add your control notification handler code here
	
}

void CTest4231430View::OnStatic3() //Z坐标
{
	// TODO: Add your control notification handler code here
	
}

void CTest4231430View::OnStatic23() //写单字
{

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