>>>>> "Gus" == Gus <[EMAIL PROTECTED]> writes:
Gus> i figured this was the most relevant list to ask...
Gus> i've got a small device (random number generator) which plugs
Gus> into a serial port and takes its power off the RTS and DTR
Gus> lines
Gus> i need to raise one and lower the other (and hold them there
Gus> - this thing needs some time to 'warm up')
Gus> how do i do this? (all the termios info i've been able to
Gus> find doesn't seem to say..)
Gus> --
Gus> - Gus
Here is the RTS - DTR is similar (this is gcc2.7.x and glibc2, kernel
2.0.32, not sure if that matters).
S.
int waketel(int fd)
{
int arg, status;
if((status = ioctl(fd, TIOCMGET, &arg)) != 0) {
msglog("waketel: ioctl: %m");
return(-1);
}
arg |= TIOCM_RTS; /* set RTS */
if((status = ioctl(fd, TIOCMSET, &arg)) != 0) {
msglog("waketel: ioctl: %m");
return(-1);
}
usleep(60000); /* wait for Telonics */
arg &= ~TIOCM_RTS; /* reset RTS */
if((status = ioctl(fd, TIOCMSET, &arg)) != 0) {
msglog("waketel: ioctl: %m");
return(-1);
}
usleep(50000); /* wait for Telonics */
return(0);
}
--
Sridhar Anandakrishnan email: [EMAIL PROTECTED]
ESSC, 208 Deike Bldg Phone: (814) 865-7124/863-1700
Pennsylvania State University Dept: 865-1073
University Park, PA 16802-2711 Fax: 865-3191
