Serial Port Configuration does not work

[David Cornejo]

On Sep 11, 2011 6:54 PM, "Boris Samorodov" <bsam at ipt.ru> wrote:
>
> On Sun, 11 Sep 2011 10:33:18 +0200 Gary Jennejohn wrote:
> > On Sat, 10 Sep 2011 21:10:44 +0400
> > Boris Samorodov <bsam at ipt.ru> wrote:
> > > On Sat, 10 Sep 2011 16:08:21 +0200 Gary Jennejohn wrote:
> > > > > On Tue, 06 Sep 2011 16:29:51 +0400 Boris Samorodov wrote:
> > > > >
> > > > > > the port does not work as expected (at least as per The
Handbook,
> > > > > > 26.2.5 Serial Port Configuration). Nether "init" nor "lock"
> > > > > > devices can be used:
> > >
> > > > Seems that the handbook is out of date.
> > >
> > > OK, how can I configure a serial port then?
> > >
>
> > Just don't use the init and lock devices.
>
> Well, I've read the Handbook because I can't do it with
> a serial port:
> -----
> % uname -a
> FreeBSD host.ipt.ru 9.0-BETA2 FreeBSD 9.0-BETA2 #14 r225395: Mon Sep  5
18:10:43 MSK 2011     bsam at host.ipt.ru:/usr/obj/usr/src/sys/HOST  i386
>
> % sudo stty -f /dev/ttyu4 56400
>
> % echo $?
> 0
>
> % sudo stty -f /dev/ttyu4
> speed 9600 baud;
> lflags: echoe echoke echoctl
> oflags: tab0
> cflags: cs8 -parenb
> -----
>
> --
> WBR, Boris Samorodov (bsam)
> Research Engineer, http://www.ipt.ru Telephone & Internet SP
> FreeBSD Committer, http://www.FreeBSD.org The Power To Serve
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It's been a long time, but I seem to recall that you need to have the device
open before you can configure it and that when the device closes it gets
reset to defaults. (or maybe the open resets it).  The way I remember
configuring it from the command line was to tip or cu to port, suspend tip,
reconfigure, and foreground tip.