From: Theo de Raadt (deraadtcvs.openbsd.org)
Date: Sat Oct 01 2005 - 19:21:44 CDT

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man 4 cua or man 4 tty

Then see the section about cua(4) devices.

And don't use tty's like that. That is what cua devices are for.
Connecting out.

> I have a laptop at home which is an old dell latitude xpi p133 st. I use
> it as a small server, running OpenBSD 3.7. I would like to have my weather
> station connected to the laptop, serving the weather via http.
>
> The weather station is a WS3600, racorded to the server via a serial cable.
>
> The program I use to retrieve the info from the station is open3600
> (http://open3600.fast-mail.nl).
>
> To make it work under openbsd, I edited /etc/ttys and changed the line :
> tty00 "/usr/libexec/getty std.9600" unknown off
>
> to :
> tty00 none network on local
>
> As open3600 is not available in binary form for OpenBSD, I compiled it.
> I then configured it to retrieve the info from /dev/tty00.
>
> Now when I launch the retrieval of the information, the command takes 30
> seconds before outputing the result.
> Each time I execute the command, it takes about 30 seconds, and sometimes
> the output is right, sometimes it is totally wrong, indicating 0 values.
> I would say I have 50% chance to get the good parameters.
>
> The problem is not hardware, because I tried the command under Debian on
> the same machine, and it retrieves the information with no problem, in
> less than 2 seconds.
>
> I think the problem is the configuration of the serial port under OpenBSD,
> but my knowledge in serial devices is rather limited.
>
> I ran 'stty -af /dev/tty00' under OpenBSD and 'stty -aF /dev/ttyS0' under
> Debian and see the modes are a bit differents, but I did not manage to
> change modes under OpenBSD.
>
> 'stty -af /dev/tty00' under OpenBSD:
>
> speed 9600 baud; 0 rows; 0 columns;
> lflags: icanon isig iexten echo echoe -echok echoke -echonl echoctl
> -echoprt -altwerase -noflsh -tostop -flusho -pendin -nokerninfo
> -extproc -xcase
> iflags: -istrip icrnl -inlcr -igncr -iuclc ixon -ixoff ixany imaxbel
> -ignbrk brkint -inpck -ignpar -parmrk
> oflags: opost onlcr -ocrnl -onocr -onlret -olcuc oxtabs -onoeot
> cflags: cread cs8 -parenb -parodd hupcl clocal -cstopb -crtscts -mdmbuf
> cchars: discard = ^O; dsusp = ^Y; eof = ^D; eol = <undef>;
> eol2 = <undef>; erase = ^?; intr = ^C; kill = ^U; lnext = ^V;
> min = 1; quit = ^\; reprint = ^R; start = ^Q; status = <undef>;
> stop = ^S; susp = ^Z; time = 0; werase = ^W;
>
> 'stty -aF /dev/ttyS0' under Debian:
>
> speed 9600 baud; rows 0; columns 0; line = 0;
> intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2
> = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R;
> werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0;
> -parenb -parodd cs8 hupcl -cstopb cread clocal -crtscts
> -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon
> -ixoff -iuclc -ixany -imaxbel
> opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0
> vt0 ff0
> isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop
> -echoprt echoctl echoke
>
> I don't even know if the problem comes from here.
>
> Any help, any reference, any advice is welcomed.
>
> Thanks in advance and sorry for my english
>
> Marc MAURICE

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