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| #include "dialogueCOM.h"
using namespace std;
//Ensemble des fonctions gérant le port COM : initialisation, ouverture, lecture, écriture et fermeture
// Délais d'attente sur le port COM
#if defined (WIN32)
COMMTIMEOUTS g_cto =
{
//MAX_WAIT_READ, /* ReadIntervalTimeOut */ Attente infinie
0, /* ReadTotalTimeOutMultiplier */
//MAX_WAIT_READ, /* ReadTotalTimeOutConstant */
0, /* WriteTotalTimeOutMultiplier */
0 /* WriteTotalTimeOutConstant */
};
// Configuration du port COM
DCB g_dcb =
{
sizeof(DCB), /* DCBlength */
19200, /* BaudRate */
TRUE, /* fBinary */
FALSE, /* fParity */
FALSE, /* fOutxCtsFlow */
FALSE, /* fOutxDsrFlow */
DTR_CONTROL_ENABLE, /* fDtrControl */
FALSE, /* fDsrSensitivity */
FALSE, /* fTXContinueOnXoff */
FALSE, /* fOutX */
FALSE, /* fInX */
FALSE, /* fErrorChar */
FALSE, /* fNull */
RTS_CONTROL_ENABLE, /* fRtsControl */
FALSE, /* fAbortOnError */
0, /* fDummy2 */
0, /* wReserved */
0x100, /* XonLim */
0x100, /* XoffLim */
8, /* ByteSize */
NOPARITY, /* Parity */
ONESTOPBIT, /* StopBits */
0x11, /* XonChar */
0x13, /* XoffChar */
'?', /* ErrorChar */
0x1A, /* EofChar */
0x10 /* EvtChar */
};
void dialogueCOM::InitCOM()
{
g_hCOM = NULL;
}
bool dialogueCOM::OpenCOM(int nId)
{
char szCOM[16];
sprintf(szCOM, "\\\\.\\COM%d", nId);
g_hCOM = CreateFile(szCOM, GENERIC_READ|GENERIC_WRITE, 0, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_SYSTEM, NULL);
if (g_hCOM == INVALID_HANDLE_VALUE)
return FALSE;
SetupComm(g_hCOM, RX_SIZE, TX_SIZE);
if (!SetCommTimeouts(g_hCOM, &g_cto) || !SetCommState(g_hCOM, &g_dcb))
{
CloseHandle(g_hCOM);
return FALSE;
}
PurgeComm(g_hCOM, PURGE_TXCLEAR|PURGE_RXCLEAR|PURGE_TXABORT|PURGE_RXABORT);
EscapeCommFunction(g_hCOM, SETDTR);
return TRUE;
}
bool dialogueCOM::CloseCOM()
{
CloseHandle(g_hCOM);
return TRUE;
}
bool dialogueCOM::ReadCOM(void* buffer, int nBytesToRead, int* readBytes)
{
int Res;
char tmp[2] = "";
*readBytes = 0;
do
{
if (!ReadFile(g_hCOM, tmp, nBytesToRead, (DWORD*)&Res, NULL))
return false;
if (Res > 0)
{
if ((tmp[0] >= 'A' && tmp[0] <= 'F') || (tmp[0] >= '0' && tmp[0] <= '9'))
pChaine[(*readBytes)++] = c;
else if (tmp[0] == 13 && *readBytes > 0)
{
pChaine[*readBytes] = '\0';
return true;
}
}
} while (*readBytes < nBytesToRead);
pChaine[*readBytes] = '\0';
return true;
}
bool dialogueCOM::WriteCOM(void* buffer, int nBytesToWrite, int* pBytesWritten)
{
return WriteFile(g_hCOM, buffer, nBytesToWrite, (DWORD*)pBytesWritten, NULL);
}
#else
bool dialogueCOM::Configurer(const char* pPort,int Vitesse,int NbBits,int Parite,int NbStop)
{
int Res;
//Ouverture de la com
fd = open(pPort, O_RDWR/*| O_NONBLOCK*/);
if (fd == -1)
{
cerr << "Erreur lors de l'ouverture du port !" << endl;
return false;
}
else
{
cout << "Ouverture de " << pPort << " reussie." << endl;
// Suppression de l'echo
//Config.c_lflag &= ~(ECHO);
Config.c_iflag = IGNBRK | IGNPAR;
Config.c_oflag = 0;
Config.c_cflag = CREAD | CLOCAL;
Config.c_cflag = Config.c_cflag & ~CRTSCTS;
// Vitesse
switch (Vitesse)
{
case BPS9600:
Config.c_cflag |= B9600;
break;
case BPS4800:
Config.c_cflag |= B4800;
break;
case BPS2400:
Config.c_cflag |= B2400;
break;
case BPS19200:
Config.c_cflag |= B19200;
break;
default:
cerr << "Vitesse invalide" << endl;
return false;
}
// Taille data
switch (NbBits)
{
case BIT8:
Config.c_cflag |= CS8;
break;
case BIT7:
Config.c_cflag |= CS7;
break;
case BIT6:
Config.c_cflag |= CS6;
break;
case BIT5:
Config.c_cflag |= CS5;
break;
default:
cerr << "Taille de donnee non conforme" << endl;
return false;
}
// Parite
switch (Parite)
{
case PARITE_PAIRE:
Config.c_cflag |= PARENB;
break;
case PARITE_IMPAIRE:
Config.c_cflag |= (PARODD | PARENB);
break;
default:
break;
}
// Nombre de bits de stop
switch (NbStop)
{
case STOP2:
Config.c_cflag |= CSTOPB;
break;
}
// Application de la configuration
Res = tcsetattr(fd, TCSANOW, &Config);
if (Res == -1)
{
cerr << "Erreur lors de l'application de la configuration" << endl;
return false;
}
tcflush(fd, TCIFLUSH);
tcflush(fd, TCOFLUSH);
}
return true;
}
bool dialogueCOM::OpenCOM(std::string s)
{
return Configurer(s.c_str(), BPS19200, BIT8, PAS_DE_PARITE, STOP1);
}
dialogueCOM::dialogueCOM()
{
}
dialogueCOM::~dialogueCOM()
{
if (fd >= 0)
close(fd);
}
bool dialogueCOM::ReadCOM(char* pChaine, int Nb, int *readBytes)
{
char c = 0;
int i;
*readBytes = 0;
do
{
if (read(fd, &c, 1) > 0)
{
if ((c >= 'A' && c <= 'F') || (c >= '0' && c <= '9'))
pChaine[(*readBytes)++] = c;
else if (c == 13 && *readBytes > 0)
{
pChaine[*readBytes] = '\0';
return true;
}
}
else
usleep(500);
} while (*readBytes < Nb);
pChaine[*readBytes] = '\0';
return true;
}
bool dialogueCOM::WriteCOM(void* pChaine, int toWrite, int *written)
{
if (fd < 0 || (*written = write(fd, pChaine, toWrite)) < 0)
return false;
return true;
}
#endif |
Lecture port série aléatoire linux
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