bool
SerialPort::open(int mode)
{
// Always open as raw so no input/output buffering
if (!QFile::open(mode | IO_Raw))
return false;
// Save current state and set raw
if (tcgetattr(handle(),&_p->state) < 0) {
qWarning("Saving termios state failed: %d", errno);
close();
return false;
} else {
struct termios state = _p->state;
cfmakeraw(&state);
state.c_cflag |= CLOCAL;
state.c_cflag &= ~CRTSCTS;
if (tcsetattr(handle(), TCSANOW, &state) < 0) {
qWarning("Setting raw state failed: %d", errno);
close();
return false;
}
}
// Set serial port to current characteristics
setSerial(_baud, _dataBits, _parity, _stopBits);
setHandshake(_handshake);
setTimeout(_timeout);
return true;
}
void initSerialPort() {
com = open(COM, O_RDWR | O_NOCTTY | O_NDELAY);
if (com <0)
comErr("Failed to open serial port\n");
fcntl(com, F_SETFL, 0);
struct termios opts;
tcgetattr(com, &opts);
opts.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
opts.c_cflag |= (CLOCAL | CREAD);
opts.c_cflag &= ~PARENB;
opts.c_cflag |= CSTOPB; // two stop bits
opts.c_cflag &= ~CSIZE;
opts.c_cflag |= CS8;
opts.c_oflag &= ~OPOST;
opts.c_iflag &= ~INPCK;
opts.c_iflag &= ~(IXON | IXOFF | IXANY);
opts.c_cc[ VMIN ] = 0;
opts.c_cc[ VTIME ] = 10;//0.1 sec
cfsetispeed(&opts, baudRate);
cfsetospeed(&opts, baudRate);
setHandshake();
if (tcsetattr(com, TCSANOW, &opts) != 0) {
perror(COM);
abort();
}
tcflush(com,TCIOFLUSH); // just in case some crap is the buffers
if (!terminalMode) {
char buf = -2;
while (read(com, &buf, 1)>0) {
if (verbose)
flsprintf(stderr,"Unexpected data from serial port: %02X\n",buf & 0xFF);
}
}
}