Вот кое что
| Код |
//comport.h
#ifndef ComPortH
#define ComPortH
#include <Classes.hpp>
#include<string>
using std::string;
class ModemComPort
{
public:
ModemComPort();
ModemComPort(string CPName);
~ModemComPort();
int Open();
int Close();
int getEofCode();
int WriteString(string Str);
string ReadString();
string WriteAndRead(string Input);
int setComPortName(string CPName);
string getComPortName();
private:
bool Opened;
HANDLE hPort;
string ComPortName;
};
#endif
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| Код |
// ComPort.cpp
#include "ComPort.h"
string ModemComPort::WriteAndRead(string Input)
{
WriteString(Input);
return ReadString();
}
ModemComPort::~ModemComPort()
{
Close();
}
int ModemComPort::WriteString(string Str)
{
PurgeComm(hPort,PURGE_TXCLEAR | PURGE_RXCLEAR);
Str = Str + "\r";
DWORD dwError , dwNumBytesWritten;
WriteFile(
hPort,
Str.c_str(),
Str.length(),
&dwNumBytesWritten,
NULL);
return (int)dwNumBytesWritten;
}
string ModemComPort::ReadString()
{
string Out = "";
DWORD dwCommModemStatus , dwBytesTransferred;
BYTE Byte;
// SetCommMask(hPort , EV_RXCHAR);
WaitCommEvent(hPort , &dwCommModemStatus , 0);
if(dwCommModemStatus & EV_RXCHAR || dwCommModemStatus & EV_RXFLAG)
{
do
{
ReadFile(hPort , &Byte , 1 , &dwBytesTransferred , 0);
if(dwBytesTransferred == 1)
Out = Out + (char)Byte;
} while(dwBytesTransferred == 1);
}
// óäàëÿåì ñíà÷àëà è ñ êîíöà \n
int Start = 0 , End = 0;
for(string::iterator i = Out.begin() ; i != Out.end() && (*i == '\n' || *i == '\r') ; ++ i , ++ Start);
for(string::reverse_iterator i = Out.rbegin() ; i != Out.rend() && (*i == '\n' || *i == '\r') ; ++ i , ++ End);
return Out.substr(Start , Out.length() - End - Start);
}
ModemComPort::ModemComPort()
{
}
ModemComPort::ModemComPort(string CPName)
: ComPortName(CPName)
{
}
string ModemComPort::getComPortName()
{
return ComPortName;
}
int ModemComPort::setComPortName(string CPName)
{
ComPortName = CPName;
return 1;
}
int ModemComPort::Open()
{
hPort = CreateFile(
ComPortName.c_str(),
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
0,
NULL
);
if(hPort == INVALID_HANDLE_VALUE)
{
return 0;
}
DCB PortDCB;
PortDCB.DCBlength = sizeof(DCB);
GetCommState(hPort , &PortDCB);
PortDCB.BaudRate = 9600;
PortDCB.fBinary = true; //!
PortDCB.fParity = true;
PortDCB.fOutxCtsFlow = false;
PortDCB.fOutxDsrFlow = false;
PortDCB.fDtrControl = DTR_CONTROL_ENABLE;
PortDCB.fDsrSensitivity = false;
PortDCB.fTXContinueOnXoff = false;
PortDCB.fOutX = false;
PortDCB.fInX = false;
PortDCB.fErrorChar = true;
PortDCB.fNull = false;
PortDCB.fRtsControl = RTS_CONTROL_ENABLE;
PortDCB.fAbortOnError = false;
PortDCB.ByteSize = 8;
PortDCB.Parity = NOPARITY;
PortDCB.StopBits = ONESTOPBIT;
// PortDCB.EofChar = '!';
if(!SetCommState(hPort , &PortDCB))
{
return 0;
// ShowMessage("Unable to configure the serial port");
}
COMMTIMEOUTS CommTimeouts;
GetCommTimeouts(hPort,&CommTimeouts);
CommTimeouts.ReadIntervalTimeout = 50;
CommTimeouts.ReadTotalTimeoutMultiplier = 1;
CommTimeouts.ReadTotalTimeoutConstant = 50;
CommTimeouts.WriteTotalTimeoutMultiplier = 1;
CommTimeouts.WriteTotalTimeoutConstant = 50;
SetCommTimeouts(hPort,&CommTimeouts);
FlushFileBuffers(hPort);
Opened = true;
return 1;
}
int ModemComPort::getEofCode()
{
DCB PortDCB;
PortDCB.DCBlength = sizeof(DCB);
GetCommState(hPort , &PortDCB);
return PortDCB.EofChar;
}
int ModemComPort::Close()
{
if(Opened)
{
CloseHandle(hPort);
Opened = false;
return 1;
}
else
return 0;
}
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