int
setRawTermios(void)
{
struct termios tio;
int rc;
if (!saved_tio_valid)
saveTermios();
rc = tcgetattr(0, &tio);
if (rc < 0)
return rc;
tio.c_lflag &= (unsigned) ~(ECHO | ICANON | IEXTEN | ISIG);
tio.c_iflag &= (unsigned) ~(ICRNL | IXOFF | IXON | ISTRIP);
#ifdef ONLCR
tio.c_oflag &= (unsigned) ~ONLCR;
#endif
#ifdef OCRNL
tio.c_oflag &= (unsigned) ~OCRNL;
#endif
#ifdef ONOCR
tio.c_oflag &= (unsigned) ~ONOCR;
#endif
#ifdef VMIN
tio.c_cc[VMIN] = 0;
tio.c_cc[VTIME] = 0;
#endif
rc = tcsetattr(0, TCSAFLUSH, &tio);
if (rc < 0)
return rc;
return 0;
}
TermiosHelper::TermiosHelper(int fileDescriptor)
: fileDescriptor_(fileDescriptor), originalAttrs_(NULL), currentAttrs_(NULL)
{
Q_ASSERT(fileDescriptor_ > 0);
originalAttrs_ = new termios();
currentAttrs_ = new termios();
// save the current serial port attributes
// see restoreTermios()
saveTermios();
// clone the original attributes
*currentAttrs_ = *originalAttrs_;
// initialize port attributes for serial port communication
initTermios();
}
