Re: Serial (RS232) communication - failing to detect stop bit

On 2007-09-13, arka.n.roy <arka.n.roy@xxxxxxxxx> wrote:

I have come to the conclusion that there is something fishy
about the serial driver in Gentoo.

You are wrong. I've used serial ports extensively for several
years under Gentoo (and for many years before that under
various other distros going back about 15 years).

There is nothing wrong with the Linux serial driver (Gentoo or
otherwise).

Below I describe the tests that led me to this conclusion.


On Gentoo you had no problems receiving data?

Never. I've both sent and received billions of bytes of serial
data under Gentoo. I do firmware development for serial
communications hardware, and I use the normal 16550 ttyS0/ttyS1
serial ports under Gentoo to do testing and troubleshooting of
the products being developed. In 15+ years of doing serial comm
stuff, I've never seen a single problem with Linux's serial
driver.

So this leaves me with the conclusion that there is something
flawed in Gentoo itself.

I don't beleive it. I've been using serial ports every day
under Gentoo for years and have never seen any problems.

I hope that is the case. I need it to work! I just don't
understand why it is only on Gentoo that I get this,

Don't know. File permission problems?

and regardless of whether it is my installation, someone
else's installation, or the live CD Gentoo.

I'd switch to reliable tools before I start looking for
problems in the underlying platform.

By the way, sorry about the cross-posting.

You didn't cross post. That's the problem: you started
multiple identical threads. Replies posted to one thread won't
be seen by people following the other[s].

Someone else at comp.os.linux.networking mentioned that.

You started this thread in c.o.l.n also? It's got nothing to
do with networking.

Do people generally look everything in comp.os.linux* on
average, or is it a greater or lesser level of granularity?

I don't understand what you're asking.

I guess I will need to pick one and stick with it but am still
not sure which one.

If you think the article is appropriate for multiple groups,
then cross-post a single article: that will keep it all as a
single thread in multiple groups. Just don't post it
individually as multiple articles to multiple groups: that
starts multiple disconnected threads.

--
Grant Edwards grante Yow! Boys, you have ALL
at been selected to LEAVE th'
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