Jason Borkowsky wrote:
>
> > > I am looking to find a simple way to control a serial port through BSD
> > > (such as raising and lowering DTR for a specified duration). I thought I
> > > had it using ioctl() and wrote a simple program to test it, but it seems I
> > > don't have a full understanding of ioctl(). Does anyone know of any
> > > pre-written utilities I can use? Or where to get some really detailed
> > > information about ioctl()? Thanks!
>
> After several responses, I thought I had it. From a software point of
> view, my program, included below, works fine. But from a hardware point of
> view, the signals I am trying to lower, RTS and DTR, are staying
> high. Can anyone try to compile the below program and do a serial port
> test with an RS-232 tester and see if anyone actually sees RTS and DTR
> going low? Sorry for bothering everyone with this again, but this is
> driving me nuts and I can't figure out the problem now. Thanks!
<Nausicaa/p0> (77 ~): gcc -o serialioctl serialioctl.c
<Nausicaa/p0> (78 ~): sudo ./serialioctl
Password:
Current Serial Settings: Ring RTS DTR DSR
Current Serial Settings: Ring DSR
<Nausicaa/p0> (79 ~): uname -a
FreeBSD Nausicaa.mitre.org 4.3-RC FreeBSD 4.3-RC #2: Tue Apr 10 10:50:19
EDT 2001 [EMAIL PROTECTED]:/usr/obj/usr/src/sys/NAUSICAA i386
Seems to work for me.
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