On Jan 2, 2007, at 12:39 PM, Mayur Shah wrote:
bzero(&sportios, sizeof(sportios)); /* clear struct for new port settings */
That's wrong, I think. You want to call tcgetattr() or cfmakeraw() not bzero() to initialize that structure.
ioctl(sportfd, TIOCMGET, &status);
I'm not 100% sure, but I think the TIOCMGET ioctl was deprecated if not entirely removed in the 2.6 kernel, and I don't think the replacing tiocmget/tiocmset is accessible from userspace.
For sample code which does some basic serial port I/O, you can look at: