public inbox for ecos-discuss@sourceware.org
 help / color / mirror / Atom feed
From: "David Ho" <davidkwho@gmail.com>
To: "eCos discuss list" <ecos-discuss@ecos.sourceware.org>
Subject: [ECOS] Serial port contention
Date: Thu, 10 Aug 2006 14:15:00 -0000	[thread overview]
Message-ID: <4dd15d180608100715g1344caa9h78801c04ddd52630@mail.gmail.com> (raw)

Hi,

I am debugging issues with my serial port.  What I need to do is to be
able to share one serial port for diag output and SLIP communication.

As I dig deeper I found out that the serial port is configured to do
blocking reads.  However, an cyg_io_read always returns char '\0' even
when nothing is received.

Has anyone come across this issue?  Is there a good preventive measure
I can use to make sure there is no contention?

Thanks, David

-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

             reply	other threads:[~2006-08-10 14:15 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-10 14:15 David Ho [this message]
2006-08-16 14:13 ` [ECOS] " David Ho

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=4dd15d180608100715g1344caa9h78801c04ddd52630@mail.gmail.com \
    --to=davidkwho@gmail.com \
    --cc=ecos-discuss@ecos.sourceware.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).