Re: TTL/USB converter usage question

[Valery Ushakov <uwe%stderr.spb.ru@localhost>]

On Wed, Oct 16, 2024 at 10:32:45 +0200, Ramiro Aceves wrote:

> Thanks Martin and RVP, cat -u did not work.
> 
> netbsd-raspa4$ { sleep 1; stty -f /dev/ttyU0 9600 raw clocal cread
> -crtscts; } & cat -u -v /dev/ttyU0
> stty: /dev/ttyU0: Resource temporarily unavailable

It seems to me you are running in circles.  Here you again open the
device multiple times (I think this was already mentioned up-thread).
You might be better off with lang/tcp-expect or devel/py-pexpect (or
even chat(8) may be, depending on what you need).

-uwe