uvos/SerialPortMultiplexer
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serial io ajustments

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This commit is contained in:
IMback
2018-10-05 21:09:11 +02:00
parent 6b18e5ee70
commit fe9ab16093
2 changed files with 26 additions and 24 deletions
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39
serial_io.cpp
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@ -23,42 +23,45 @@ int serialport_init(const char* device, int baud)
int fd;
fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY);
if (fd == -1)
{
perror("init_serialport: Unable to open port ");
return -1;
}
{
perror("init_serialport: Unable to open port ");
return -1;
}
if (tcgetattr(fd, &toptions) < 0)
{
{
perror("init_serialport: Couldn't get term attributes");
return -1;
}
cfsetispeed(&toptions, baud);
cfsetospeed(&toptions, baud);
}
// 8N1
toptions.c_cflag &= ~PARENB;
toptions.c_cflag &= ~CSTOPB;
toptions.c_cflag &= ~CSIZE;
toptions.c_cflag |= CS8;
// no flow control
toptions.c_cflag &= ~(CRTSCTS | CLOCAL);
toptions.c_cflag |= IGNPAR | CREAD; // turn on READ & ignore ctrl lines
toptions.c_iflag &= ~(IXON | IXOFF | IXANY); // turn off s/w flow ctrl
toptions.c_lflag &= ~(ICANON | ISIG | ECHO | ECHOE); // make raw
toptions.c_oflag &= ~OPOST; // make raw
//Make Raw
toptions.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
toptions.c_oflag &= ~OPOST;
toptions.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
toptions.c_cflag &= ~(CSIZE | PARENB);
toptions.c_cflag |= CS8;
cfsetispeed(&toptions, baud);
cfsetospeed(&toptions, baud);
// see: http://unixwiz.net/techtips/termios-vmin-vtime.html
/*toptions.c_cc[VMIN] = 0;
toptions.c_cc[VTIME] = 20;
fcntl(fd, F_SETFL, FNDELAY);*/
toptions.c_cc[VMIN] = 0;
toptions.c_cc[VTIME] = 40;
fcntl(fd, F_SETFL, FNDELAY);
if( tcsetattr(fd, TCSANOW, &toptions) < 0)
{
{
perror("init_serialport: Couldn't set term attributes");
return -1;
}
}
return fd;
}