同步:
SerialComm.h文件
#pragma once
//数据缓冲区长度
#define MAX_BUF_LEN 10240
//校验类型枚举
typedef enum CheckType
{
ctNoSet = 0,
ctNoCheck,
ctCRC
};
//生成CRC
//参数说明:
// BYTE* pBuf:输入参数,需要生成校验的数据指针
// int dwLen:输入参数,需要生成校验的数据长度
// 返回值:WORD,生成的十六位CRC校验
//
WORD CRC(BYTE* pBuf,int dwLen);
//校验CRC
//参数说明:
// BYTE* pBuf:输入参数,需要校验的数据指针
// int dwLen:输入参数,需要校验的数据长度
// 返回值:BOOL,校验正确为TRUE,否则为FALSE
//
BOOL CRCCheck(BYTE* pBuf,int dwLen);
//CSerialComm 串行通讯处理
class CSerialComm : public CObject
{
friend class CSimulationManage;
public:
//标准构造函数
CSerialComm();
//构造函数
CSerialComm(int Port,CheckType Check = ctNoSet,int BaudRate = 0,int ByteSize = 0,int Parity = -1, int StopBit = -1);
//析构函数
~CSerialComm();
//串口初始化
BOOL Open();
//串口初始化
BOOL Open(int Port,CheckType Check = ctNoSet,int BaudRate = 0,int ByteSize = 0,int Parity = -1, int StopBit = -1);
//读数据
BOOL Read(BYTE* pBuf,int BufLen,int& nRead);
//读机车数据
BOOL ReadLocDat(BYTE* pBuf,int BufLen,int& nRead);
//写数据
BOOL Write(BYTE* pBuf,int BufLen);
//关闭
BOOL Close();
//检测串口是否打开
BOOL IsOpen();
private:
//串口句柄
HANDLE m_hCom;
//端口号
int m_Port;
//速率
int m_BaudRate;
//发送的字节位数
int m_ByteSize;
//停止位数
int m_StopBit;
//校验
int m_Parity;
//校验类型
CheckType m_Check;
//缓冲区长度
int m_RecvBufLen;
//接收缓冲区长度
BYTE m_RecvBuf[MAX_BUF_LEN];
///写端口,参数依次为句柄,缓冲区指针,要写字节数,写入字节数
BOOL WriteComm(void* lpBuffer,DWORD nToWrite,DWORD* nWritten);
public:
///读端口,参数依次为句柄,缓冲区指针,要读字节数,读入字节数
BOOL ReadComm(void* lpBuffer,DWORD nToRead,DWORD* nRead);
};
.cpp文件
// SerialComm.cpp : 实现文件
//
#include "stdafx.h"
#include "SerialComm.h"
//CRC查表算法
WORD ccitt_16[ 256 ] =
{
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
};
//生成CRC
//参数说明:
// BYTE* pBuf:输入参数,需要生成校验的数据指针
// int dwLen:输入参数,需要生成校验的数据长度
// 返回值:WORD,生成的十六位CRC校验
//
WORD CRC(BYTE* pBuf,int dwLen)
{
BYTE *p = pBuf;
WORD crc = 0;
while ( dwLen-- != 0 )
{
crc = ( crc << 8 ) ^ ccitt_16[ ( crc >> 8 ) ^ *p++];
}
return crc;
}
//校验CRC
//参数说明:
// BYTE* pBuf:输入参数,需要校验的数据指针
// int dwLen:输入参数,需要校验的数据长度
// 返回值:BOOL,校验正确为TRUE,否则为FALSE
//
BOOL CRCCheck(BYTE* pBuf,int dwLen)
{
WORD crc = CRC(pBuf,dwLen);
return (BOOL)(crc==0);
}
//标准构造函数
//缺省绑定串口2,但不打开串口。
//
CSerialComm::CSerialComm()
{
m_hCom = NULL;
m_Port = 2;
m_Check = ctCRC;
m_BaudRate = 9600;
m_ByteSize = 8;
m_Parity = 0;
m_StopBit = 0;
m_RecvBufLen = 0;
}
//构造函数
//参数说明:
// int Port:指定的串口号
// CheckType Check:校验类型,缺省为未设置,此时使用以前的校验方式
// int BaudRate:速率,通讯速率,可省略,此时使用以前的速率
// int ByteSize:每字节的位数,可省略,此时使用以前的设置
// int Parity:校验,可省略,此时使用以前的设置
// int StopBit:停止位,可省略,此时使用以前的设置
//
CSerialComm::CSerialComm(int Port,CheckType Check,int BaudRate,int ByteSize,int Parity,int StopBit)
{
m_hCom = NULL;
m_RecvBufLen = 0;
Open(Port,Check,BaudRate,ByteSize,Parity,StopBit);
}
//析构函数
CSerialComm::~CSerialComm()
{
Close();
}
// CSerialComm 成员函数
//串口初始化
//参数说明:
// 无输入参数
// 返回BOOL值,打开串口为TRUE,否则为FALSE
//
BOOL CSerialComm::Open()
{
return Open(m_Port);
}
//串口初始化
//参数说明:
// int Port:指定的串口号
// CheckType Check:校验类型,缺省为未设置,此时使用以前的校验方式
// int BaudRate:速率,通讯速率,可省略,此时使用以前的速率
// int ByteSize:每字节的位数,可省略,此时使用以前的设置
// int Parity:校验,可省略,此时使用以前的设置
// int StopBit:停止位,可省略,此时使用以前的设置
// 返回BOOL值,打开串口为TRUE,否则为FALSE
//
BOOL CSerialComm::Open(int Port,CheckType Check,int BaudRate,int ByteSize,int Parity, int StopBit)
{
BOOL bRet = TRUE;
Close();
if(Port!=0) m_Port = Port;
if(Check!=ctNoSet) m_Check = Check;
if(BaudRate!=0) m_BaudRate = BaudRate;
if(ByteSize>0) m_ByteSize = ByteSize;
if(Parity>=0) m_Parity = Parity;
if(StopBit>=0) m_StopBit = StopBit;
char ComStr[80];
DCB dcb;
COMMTIMEOUTS TimeOut;
sprintf(ComStr,"Com%d",m_Port);
//当串口打开或初始化失败时,可得到返回值
//函数结束时可根据返回值对串口句柄进行处理
while(1)
{
//创建串口设备
m_hCom=CreateFile(ComStr,GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL);
if (m_hCom==INVALID_HANDLE_VALUE)
{
bRet = FALSE;
break;
}
//获取并设置串口属性
memset(&dcb,0,sizeof(dcb));
dcb.DCBlength = sizeof(DCB) ;
if(!GetCommState(m_hCom,&dcb))
{
bRet = FALSE;
break;
}
dcb.fBinary = 1;
dcb.BaudRate=m_BaudRate;
dcb.ByteSize=m_ByteSize;
dcb.Parity=m_Parity;
dcb.StopBits=m_StopBit;
dcb.fParity=0;
dcb.fDtrControl=1;
dcb.fOutxCtsFlow=0;
dcb.fOutxDsrFlow=0;
dcb.fRtsControl=1;
dcb.fAbortOnError=1;
dcb.fTXContinueOnXoff=1;
dcb.fOutX=0;
dcb.fInX=0;
if(!SetCommState(m_hCom,&dcb))
{
bRet = FALSE;
break;
}
//设置串口读写时间属性
TimeOut.ReadIntervalTimeout=MAXDWORD;
TimeOut.ReadTotalTimeoutMultiplier=0;
TimeOut.ReadTotalTimeoutConstant=0;
TimeOut.WriteTotalTimeoutMultiplier=1;
TimeOut.WriteTotalTimeoutConstant=1;
if(!SetCommTimeouts(m_hCom,&TimeOut))
{
bRet = FALSE;
break;
}
//清空串口
PurgeComm(m_hCom,PURGE_TXCLEAR|PURGE_RXCLEAR);
break;
}
//如果初始化失败则对句柄进行处理
if(!bRet)
{
if((m_hCom!=NULL)&&(m_hCom!=INVALID_HANDLE_VALUE)) CloseHandle(m_hCom);
m_hCom = NULL;
}
return bRet;
}
//读数据
//参数说明:
// BYTE* pBuf:输入参数,需要发送的数据缓冲区指针
// int BufLen:输入参数,数据缓冲区长度
// int& nRead:输出参数,读到的数据长度
// 返回值:读到有效数据为TRUE,否则为FALSE
//
BOOL CSerialComm::Read(BYTE* pBuf,int BufLen,int& nRead)
{
int BgnPos = -1,EndPos = -1,i;
DWORD nReadCount = 0;
if(m_RecvBufLen>(MAX_BUF_LEN/2)) m_RecvBufLen = 0;
ReadComm(&m_RecvBuf[m_RecvBufLen],100,&nReadCount);
m_RecvBufLen += nReadCount;
if(nReadCount>0)
{
nReadCount = nReadCount;
}
nRead = 0;
if(m_RecvBufLen<=0) return FALSE;
//查找帧头
for(i=0;i0)
{
BOOL bDelete = FALSE;
nRead = 0;
for(i=BgnPos+2;i=BufLen) break;
}
BOOL bRet = FALSE;
switch(m_Check)
{
case ctCRC:
if(CRCCheck(pBuf,nRead))
{
bRet = TRUE;
nRead -= 2;
}
else
{
nRead = 0;
}
break;
default:
bRet = TRUE;
break;
}
if(EndPos+20)
{
memmove(&m_RecvBuf[0],&m_RecvBuf[BgnPos],m_RecvBufLen-BgnPos);
m_RecvBufLen -= BgnPos;
}
return FALSE;
}
}
/************************************************************************/
//读数据
//参数说明:
// BYTE* pBuf:输入参数,需要发送的数据缓冲区指针
// int BufLen:输入参数,数据缓冲区长度
// int& nRead:输出参数,读到的数据长度
// 返回值:读到有效数据为TRUE,否则为FALSE
//
BOOL CSerialComm::ReadLocDat(BYTE* pBuf,int BufLen,int& nRead)
{
int BgnPos = -1,EndPos = -1,i;
DWORD nReadCount = 0;
if(m_RecvBufLen>(MAX_BUF_LEN/2))
m_RecvBufLen = 0;
ReadComm(&m_RecvBuf[m_RecvBufLen],/*100*/BufLen,&nReadCount);
m_RecvBufLen += nReadCount;
if(nReadCount>0)
{
nReadCount = nReadCount;
}
nRead = 0;
if(m_RecvBufLen<=0) return FALSE;
//查找帧头
for(i=0;i0)
{
if(m_RecvBuf[i-1]!=0x80 && m_RecvBuf[i+1] == 0x01 && m_RecvBuf[i+2] == 0x01)
{
BgnPos = i;
break;
}
}
else
{
if (m_RecvBuf[i+1] == 0x01 && m_RecvBuf[i+2] == 0x01)
{
BgnPos = i;
break;
}
}
//BgnPos = i;
//break;
}
}
//如果没有找到帧头则作相应处理
if(BgnPos<0)
{
/*if(m_RecvBuf[m_RecvBufLen-1]==0x10)
{
m_RecvBuf[0] = 0x10;
m_RecvBufLen = 1;
}
else*/
m_RecvBufLen = 0;
return FALSE;
}
//查找帧尾
for(i=BgnPos+3;i0)
{
//BOOL bDelete = FALSE;
nRead = 0;
for(i=BgnPos+1;i=BufLen) break;
}
BOOL bRet = FALSE;
switch(m_Check)
{
case ctCRC:
if(CRCCheck(pBuf,nRead))
{
bRet = TRUE;
nRead -= 2;
}
else
{
nRead = 0;
}
break;
default:
bRet = TRUE;
break;
}
if(EndPos+10)
{
memmove(&m_RecvBuf[0],&m_RecvBuf[BgnPos],m_RecvBufLen-BgnPos);
m_RecvBufLen -= BgnPos;
}
return FALSE;
}
}
/************************************************************************/
//写数据
//参数说明:
// BYTE* pBuf:输入参数,需要发送的数据指针
// int BufLen:输入参数,需要发送的数据长度
// 返回值:BOOL,正确发送为TRUE,否则为FALSE
//
BOOL CSerialComm::Write(BYTE* pBuf,int BufLen)
{
WORD C = 0;
int Len = 0;
DWORD nWritten = 0;
BYTE Buf[MAX_BUF_LEN];
if((NULL==pBuf)||(BufLen<=0)) return FALSE;
if(m_Check==ctCRC)
{
//生成校验
C = CRC(pBuf,BufLen);
}
Buf[Len++] = 0x10;
Buf[Len++] = 0x02;
for(int i=0;i
异步实现(仅供参考)
SerialCommAsyn.h文件
#pragma once
//数据缓冲区长度
#define MAX_BUF_LEN 1024
//校验类型枚举
typedef enum CheckType
{
ctNoSet = 0,
ctNoCheck,
ctCRC
};
//NO USE 生成CRC
//参数说明:
// BYTE* pBuf:输入参数,需要生成校验的数据指针
// int dwLen:输入参数,需要生成校验的数据长度
// 返回值:WORD,生成的十六位CRC校验
//
WORD CRC(BYTE* pBuf,int dwLen);
//校验CRC
//参数说明:
// BYTE* pBuf:输入参数,需要校验的数据指针
// int dwLen:输入参数,需要校验的数据长度
// 返回值:BOOL,校验正确为TRUE,否则为FALSE
//
BOOL CRCCheck(BYTE* pBuf,int dwLen);
//CSerialComm 串行通讯处理
class CSerialComm : public CObject
{
public:
//标准构造函数
CSerialComm();
//构造函数
CSerialComm(int Port,CheckType Check = ctNoSet,int BaudRate = 0,int ByteSize = 0,int Parity = -1, int StopBit = -1);
//析构函数
~CSerialComm();
//串口初始化
BOOL Open();
//串口初始化
BOOL Open(int Port,CheckType Check = ctNoSet,int BaudRate = 0,int ByteSize = 0,int Parity = -1, int StopBit = -1);
//读数据
BOOL Read(BYTE* pBuf,int BufLen,int& nRead);
//读电量数据
BOOL ReadBtyDat(BYTE* pBuf,int BufLen,int& nRead);
//NO USE 写数据
BOOL Write(BYTE* pBuf,int BufLen);
//关闭
BOOL Close();
//检测串口是否打开
BOOL IsOpen();
//private:
public:
//串口句柄
HANDLE m_hCom;
//端口号
int m_Port;
//速率
int m_BaudRate;
//发送的字节位数
int m_ByteSize;
//停止位数
int m_StopBit;
//校验
int m_Parity;
//校验类型
CheckType m_Check;
//异步读入信号
OVERLAPPED m_osRead;
//异步写入信号
OVERLAPPED m_osWrite;
//异步等待信号
OVERLAPPED m_osWait;
//缓冲区长度
int m_RecvBufLen;
//接收缓冲区长度
BYTE m_RecvBuf[MAX_BUF_LEN];
///NO USE 写端口,参数依次为句柄,缓冲区指针,要写字节数,写入字节数
BOOL WriteComm(void* lpBuffer,DWORD nToWrite,DWORD* nWritten);
public:
///读端口,参数依次为句柄,缓冲区指针,要读字节数,读入字节数
BOOL ReadComm(void* lpBuffer,DWORD nToRead,DWORD* nRead);
};
,cpp文件
// SerialComm_Battery.cpp : 实现文件
//
#include "stdafx.h"
#include "SerialComm.h"
//CRC查表算法
WORD ccitt_16[ 256 ] =
{
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
};
//生成CRC
//参数说明:
// BYTE* pBuf:输入参数,需要生成校验的数据指针
// int dwLen:输入参数,需要生成校验的数据长度
// 返回值:WORD,生成的十六位CRC校验
//
WORD CRC(BYTE* pBuf,int dwLen)
{
BYTE *p = pBuf;
WORD crc = 0;
while ( dwLen-- != 0 )
{
crc = ( crc << 8 ) ^ ccitt_16[ ( crc >> 8 ) ^ *p++];
}
return crc;
}
//校验CRC
//参数说明:
// BYTE* pBuf:输入参数,需要校验的数据指针
// int dwLen:输入参数,需要校验的数据长度
// 返回值:BOOL,校验正确为TRUE,否则为FALSE
//
BOOL CRCCheck(BYTE* pBuf,int dwLen)
{
//WORD crc = CRC(pBuf,dwLen);
//return (BOOL)(crc==0);
if(((pBuf[0]+pBuf[1]+pBuf[2])&0xFF) == pBuf[3])
{
return true;
}
else return false;
}
//标准构造函数
//缺省绑定串口2,但不打开串口。
//
CSerialComm::CSerialComm()
{
m_hCom = NULL;
m_Port = 4;
m_Check = ctCRC;
m_BaudRate = 9600;
m_ByteSize = 8;
m_Parity = 0;
m_StopBit = 0;
m_RecvBufLen = 0;
}
//构造函数
//参数说明:
// int Port:指定的串口号
// CheckType Check:校验类型,缺省为未设置,此时使用以前的校验方式
// int BaudRate:速率,通讯速率,可省略,此时使用以前的速率
// int ByteSize:每字节的位数,可省略,此时使用以前的设置
// int Parity:校验,可省略,此时使用以前的设置
// int StopBit:停止位,可省略,此时使用以前的设置
//
CSerialComm::CSerialComm(int Port,CheckType Check,int BaudRate,int ByteSize,int Parity,int StopBit)
{
m_hCom = NULL;
m_RecvBufLen = 0;
Open(Port,Check,BaudRate,ByteSize,Parity,StopBit);
}
//析构函数
CSerialComm::~CSerialComm()
{
Close();
}
// CSerialComm 成员函数
//串口初始化
//参数说明:
// 无输入参数
// 返回BOOL值,打开串口为TRUE,否则为FALSE
//
BOOL CSerialComm::Open()
{
return Open(m_Port);
}
//串口初始化
//参数说明:
// int Port:指定的串口号
// CheckType Check:校验类型,缺省为未设置,此时使用以前的校验方式
// int BaudRate:速率,通讯速率,可省略,此时使用以前的速率
// int ByteSize:每字节的位数,可省略,此时使用以前的设置
// int Parity:校验,可省略,此时使用以前的设置
// int StopBit:停止位,可省略,此时使用以前的设置
// 返回BOOL值,打开串口为TRUE,否则为FALSE
//
BOOL CSerialComm::Open(int Port,CheckType Check,int BaudRate,int ByteSize,int Parity, int StopBit)
{
BOOL bRet = TRUE;
Close();
if(Port!=0) m_Port = Port;
if(Check!=ctNoSet) m_Check = Check;
if(BaudRate!=0) m_BaudRate = BaudRate;
if(ByteSize>0) m_ByteSize = ByteSize;
if(Parity>=0) m_Parity = Parity;
if(StopBit>=0) m_StopBit = StopBit;
char ComStr[80];
DCB dcb;
COMMTIMEOUTS TimeOut;
sprintf(ComStr,"Com%d",m_Port);
//当串口打开或初始化失败时,可得到返回值
//函数结束时可根据返回值对串口句柄进行处理
while(1)
{
//创建串口设备
//将char[]转化为LPCWSTR
CString str = CString(ComStr);
USES_CONVERSION;
LPCWSTR lpCom = new WCHAR[str.GetLength()+1];
wcscpy((LPTSTR)lpCom , T2W((LPTSTR)str.GetBuffer(NULL)));
m_hCom=CreateFile(lpCom,GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL|FILE_FLAG_OVERLAPPED,NULL);
//清除str
str.ReleaseBuffer();
delete lpCom;
if (m_hCom==INVALID_HANDLE_VALUE)
{
bRet = FALSE;
break;
}
//获取并设置串口属性
memset(&dcb,0,sizeof(dcb));
dcb.DCBlength = sizeof(DCB) ;
if(!GetCommState(m_hCom,&dcb))
{
bRet = FALSE;
break;
}
dcb.fBinary = 1;
dcb.BaudRate=m_BaudRate;
dcb.ByteSize=m_ByteSize;
dcb.Parity=m_Parity;
dcb.StopBits=m_StopBit;
dcb.fParity=0;
dcb.fDtrControl=1;
dcb.fOutxCtsFlow=0;
dcb.fOutxDsrFlow=0;
dcb.fRtsControl=1;
dcb.fAbortOnError=1;
dcb.fTXContinueOnXoff=1;
dcb.fOutX=0;
dcb.fInX=0;
if(!SetCommState(m_hCom,&dcb))
{
bRet = FALSE;
break;
}
//设置串口读写时间属性
TimeOut.ReadIntervalTimeout=MAXDWORD;
TimeOut.ReadTotalTimeoutMultiplier=0;
TimeOut.ReadTotalTimeoutConstant=0;
TimeOut.WriteTotalTimeoutMultiplier=1;
TimeOut.WriteTotalTimeoutConstant=1;
if(!SetCommTimeouts(m_hCom,&TimeOut))
{
bRet = FALSE;
break;
}
//设置OVERLAPPED的读写事件
memset(&m_osRead,0,sizeof(OVERLAPPED));
memset(&m_osWrite,0,sizeof(OVERLAPPED));
memset(&m_osWait,0,sizeof(OVERLAPPED));
m_osRead.hEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
m_osWrite.hEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
m_osWait.hEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
if(!(m_osRead.hEvent && m_osWrite.hEvent && m_osWait.hEvent))
{
bRet = FALSE;
break;
}
//设置串口事件
if(!SetCommMask(m_hCom,EV_RXCHAR))
{
bRet = FALSE;
break;
}
//清空串口
PurgeComm(m_hCom,PURGE_TXCLEAR|PURGE_RXCLEAR);
break;
}
//如果初始化失败则对句柄进行处理
if(!bRet)
{
if((m_hCom!=NULL)&&(m_hCom!=INVALID_HANDLE_VALUE)) CloseHandle(m_hCom);
m_hCom = NULL;
}
return bRet;
}
//读数据
//参数说明:
// BYTE* pBuf:输入参数,需要发送的数据缓冲区指针
// int BufLen:输入参数,数据缓冲区长度
// int& nRead:输出参数,读到的数据长度
// 返回值:读到有效数据为TRUE,否则为FALSE
//
BOOL CSerialComm::Read(BYTE* pBuf,int BufLen,int& nRead)
{
int BgnPos = -1,EndPos = -1,i;
DWORD nReadCount = 0;
if(m_RecvBufLen>(MAX_BUF_LEN/2)) m_RecvBufLen = 0;
ReadComm(&m_RecvBuf[m_RecvBufLen],100,&nReadCount);
m_RecvBufLen += nReadCount;
if(nReadCount>0)
{
nReadCount = nReadCount;
}
nRead = 0;
if(m_RecvBufLen<=0) return FALSE;
//查找帧头
for(i=0;i0)
{
BOOL bDelete = FALSE;
nRead = 0;
for(i=BgnPos+2;i=BufLen) break;
}
BOOL bRet = FALSE;
switch(m_Check)
{
case ctCRC:
if(CRCCheck(pBuf,nRead))
{
bRet = TRUE;
nRead -= 2;
}
else
{
nRead = 0;
}
break;
default:
bRet = TRUE;
break;
}
if(EndPos+20)
{
memmove(&m_RecvBuf[0],&m_RecvBuf[BgnPos],m_RecvBufLen-BgnPos);
m_RecvBufLen -= BgnPos;
}
return FALSE;
}
}
/************************************************************************/
//读数据
//参数说明:
// BYTE* pBuf:输入参数,需要发送的数据缓冲区指针
// int BufLen:输入参数,数据缓冲区长度
// int& nRead:输出参数,读到的数据长度
// 返回值:读到有效数据为TRUE,否则为FALSE
//
BOOL CSerialComm::ReadBtyDat(BYTE* pBuf,int BufLen,int& nRead)
{
int BgnPos = -1,EndPos = -1,i;
DWORD nReadCount = 0;
if(m_RecvBufLen>(MAX_BUF_LEN/2))
m_RecvBufLen = 0;
ReadComm(&m_RecvBuf[m_RecvBufLen],/*100*/BufLen,&nReadCount);
m_RecvBufLen += nReadCount;
//?
if(nReadCount>0)
{
nReadCount = nReadCount;
}
nRead = 0;
if(m_RecvBufLen<=0)
{
return FALSE;
}
//查找帧头
for(i=0;i0)
{
//BOOL bDelete = FALSE;
nRead = 0;
for(i=BgnPos+2;i<=EndPos;i++)
{
pBuf[nRead++] = m_RecvBuf[i];
if(nRead>=BufLen) break;
}
BOOL bRet = FALSE;
switch(m_Check)
{
case ctCRC:
if(CRCCheck(pBuf,nRead))
{
bRet = TRUE;
//nRead -= 2;
}
else
{
nRead = 0;
}
break;
default:
bRet = TRUE;
break;
}
if(EndPos+10)
{
memmove(&m_RecvBuf[0],&m_RecvBuf[BgnPos],m_RecvBufLen-BgnPos);
m_RecvBufLen -= BgnPos;
}
return FALSE;
}
}
/************************************************************************/
//写数据
//参数说明:
// BYTE* pBuf:输入参数,需要发送的数据指针
// int BufLen:输入参数,需要发送的数据长度
// 返回值:BOOL,正确发送为TRUE,否则为FALSE
//
BOOL CSerialComm::Write(BYTE* pBuf,int BufLen)
{
WORD C = 0;
int Len = 0;
DWORD nWritten = 0;
BYTE Buf[MAX_BUF_LEN];
if((NULL==pBuf)||(BufLen<=0)) return FALSE;
if(m_Check==ctCRC)
{
//生成校验
C = CRC(pBuf,BufLen);
}
Buf[Len++] = 0x10;
Buf[Len++] = 0x02;
for(int i=0;i
Thread_WaitCommMask.cpp
BOOL CTestDlg::OnInitDialog(void)
{
CDialog::OnInitDialog();
hThread = CreateThread(NULL,0,ThreadFunc,(LPVOID)m_hWnd,0,NULL);
return 0;
}
DWORD WINAPI ThreadFunc(LPVOID lpParameter)
{
//HWND hWnd = (HWND)lpParameter;
static int count = 0;
CString str;
int nReadCount;
DWORD dwMask,dwTrans,dwError;
COMSTAT comStat;
BYTE m_RecvBuf[MAX_BUF_LEN];
while(1)
{
ResetEvent(theApp.m_SerialComm->m_osWait.hEvent);
if(!WaitCommEvent(theApp.m_SerialComm->m_hCom,&dwMask,&theApp.m_SerialComm->m_osWait))
{
if(GetLastError() == ERROR_IO_PENDING)
{
GetOverlappedResult(theApp.m_SerialComm->m_hCom,&theApp.m_SerialComm->m_osWait,&dwTrans,true);
}
}
CString str;
str.Format(_T("%d"),dwMask);
AfxMessageBox(str);
if((dwMask & EV_RXCHAR) == EV_RXCHAR)
{
theApp.m_SerialComm->ReadBtyDat(m_RecvBuf,100,nReadCount);
if(nReadCount > 0)
{
//电压 (m_RecvBuf[2]<<8)|m_RecvBuf[1]
str.Format(_T("cout = %d str = %02x %02x %02x %02x"),count++,m_RecvBuf[0],m_RecvBuf[1],m_RecvBuf[2],m_RecvBuf[3]);
SetDlgItemText((HWND)lpParameter,IDC_EDIT2,str);
//::PostMessage((HWND)lpParameter , UM_RECVCOMMDATA , 0, 0);
}
}
//if()
//{
//其它事件
//}
Sleep(10);
}
return true;
}