public inbox for ecos-discuss@sourceware.org
 help / color / mirror / Atom feed
From: "Venkateswara Rao L." <lvenkat@lvl7.com>
To: <ecos-discuss@ecos.sourceware.org>
Subject: [ECOS] ttydiag read and write to console
Date: Wed, 02 May 2007 14:38:00 -0000	[thread overview]
Message-ID: <FE7FB54DCB7C6949A1D3F9FF22DA6C1353FCDC@lvl7in-mail01.lvl7.com> (raw)

Hi all,
    I want to work on ttydiag, 
    I am able to write to the terminal using "cyg_io_write"
    But unable to read from the terminal with echo using "cyg_io_read"
    
Please find the code sample
---------------------------------------------------------
Char buff[] = "\nPlease enter some data: ";
retval = cyg_io_lookup("/dev/ttydiag", &handle);
    if (retval != NOERR) {
        printf("io lookup error: %d\n", retval);
        return;
    }
    len = strlen(buff);
    cyg_io_write(handle, buff, &len);
    retval = cyg_io_read(handle,bufRead,&in_msglen);
    if (retval != NOERR) 
    {
        printf("Can't read data - DEVIO error: %d\n", retval);
	  while(1);/*Hang*/
        return;
    }
    printf("Read %d bytes\n", in_msglen);

---------------------------------------------------------
I am able to see the output as shown 
---------------------------------------------------------
Please enter some data:
---------------------------------------------------------
After that what ever I entering it is not echoing and hanged.
Please help me.

Warm Regards
L. Venkateswara Rao.

--
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:[~2007-05-02 14:38 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-02 14:38 Venkateswara Rao L. [this message]
2007-05-03  4:34 Venkateswara Rao L.
2007-05-03  6:45 ` Andrew Lunn
     [not found] <FE7FB54DCB7C6949A1D3F9FF22DA6C1353FDD4@lvl7in-mail01.lvl7.com>
2007-05-03  9:49 ` Andrew Lunn

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=FE7FB54DCB7C6949A1D3F9FF22DA6C1353FCDC@lvl7in-mail01.lvl7.com \
    --to=lvenkat@lvl7.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).