bool
CAI302::SetBaudRate(Port &port, unsigned baud_rate, OperationEnvironment &env)
{
unsigned n = ConvertBaudRate(baud_rate);
if (n == 0)
return false;
char cmd[16];
sprintf(cmd, "BAUD %u\r", n);
return SendCommandQuick(port, cmd, env);
}
int OpenSerialPort(int *fd,int iflow,struct termios *oldtio,char *sName,int nBauds,int parity,int nBits,int nStop)
{
int Of_Baud;
int Of_Par;
int Of_Bits;
int Of_Stop;
int HardFlow=0;
int SoftFlow=0;
struct termios newtio;
switch(iflow)
{
case 1: HardFlow=CRTSCTS; break;
case 2: SoftFlow=IXON | IXOFF | IXANY; break;
case 3: HardFlow=CRTSCTS; SoftFlow=IXON | IXOFF | IXANY; break;
}
if ( (Of_Baud = ConvertBaudRate(nBauds)) == -1 ) return 1;
if ( (Of_Par = ConvertParity(parity)) == -1 ) return 2;
if ( (Of_Bits = ConvertDataBits(nBits)) == -1 ) return 3;
if ( (Of_Stop = ConvertStopBits(nStop)) == -1 ) return 4;
*fd=open(sName,O_RDWR | O_NOCTTY | O_NDELAY );
if ( (*fd) < 0 ) return 5;
if (oldtio)
{
if ( tcgetattr (*fd,oldtio) == -1)
{
close(*fd);
return 6;
}
}
if (tcgetattr (*fd,&newtio) == -1 )
{
close(*fd);
return 6;
}
// cleaning default options
newtio.c_cflag &= ~(CSIZE | CSTOPB | PARENB | PARODD | CRTSCTS);
newtio.c_iflag &= ~( INPCK | ISTRIP | IGNPAR | IXON | IXOFF | IXANY | ICRNL | INLCR );
newtio.c_lflag &= ~( ICANON | ECHO | ECHOE | ISIG );
// setting options
newtio.c_cflag= Of_Bits | Of_Stop | Of_Par | CLOCAL | CREAD | HUPCL | HardFlow;
if ( Of_Par & PARENB )
newtio.c_iflag |= INPCK; // Why stripping the eight bit when parity is enabled?? | ISTRIP;
else
newtio.c_iflag |= IGNPAR;
newtio.c_iflag |= SoftFlow;
newtio.c_oflag=0;
newtio.c_cc[VMIN]=1;
newtio.c_cc[VTIME]=1;
newtio.c_cc[VSTART]=17; //DC1;
newtio.c_cc[VSTOP]=19; //DC3;
cfsetispeed(&newtio,Of_Baud);
cfsetospeed(&newtio,Of_Baud);
tcflush(*fd,TCIFLUSH);
if ( tcsetattr(*fd,TCSANOW,&newtio) == -1)
{
close(*fd);
return 7;
}
return 0;
}
