From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Michel He <michel.he@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] Mini2440 on the kernel 2.6.30.1
Date: Fri, 09 Jul 2010 12:00:10 +0200 [thread overview]
Message-ID: <4C36F32A.4080404@domain.hid> (raw)
In-Reply-To: <20100709114655.46571rvnivjguu4w@domain.hid>
Michel He wrote:
> ok, thanks for help as far as concerned the S3C2440 issues on that board.
>
> So what has been previously found out is: no external clock connected
> on pin clk1 of timer 3, instead timer 2 and 3 are used to drive the
> sound module. Since I get changed the timer 3 to timer 1, it can boot
> to shell. However, the xenomai test give a 7000 us of average latency,
> it is even worst than pure Linux system. Also, the USB, nor the camera
> won't work at all (the system get freezed when plug them in). The UART
> and LCD are OK. The sound is buggy due to lags, it seems the buffer
> not continuously filled up by linux. So far the others modules are not
> tested.
>
> Something should get wrong, but no idea how to figure it out.
The timer issue you had should have been fixed in the latest I-pipe
versions. Could you try Xenomai 2.5.3 and one of the I-pipe patch it
contains and see if it has the same latencies issues?
--
Gilles.
next prev parent reply other threads:[~2010-07-09 10:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20100316150037.11405209mnid677k@domain.hid>
[not found] ` <4B9FB4A8.6000903@domain.hid>
2010-03-16 17:32 ` [Xenomai-help] Mini2440 on the kernel 2.6.30.1 Michel He
2010-03-16 17:37 ` Gilles Chanteperdrix
2010-03-16 18:10 ` Michel He
2010-03-16 20:20 ` Gilles Chanteperdrix
2010-07-09 9:46 ` Michel He
2010-07-09 10:00 ` Gilles Chanteperdrix [this message]
2010-07-19 16:48 ` Michel He
2010-07-19 17:15 ` Gilles Chanteperdrix
[not found] ` <20100720112613.75802eoute2c2xts@domain.hid>
2010-07-20 10:07 ` Gilles Chanteperdrix
2010-07-20 16:17 ` Michel He
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=4C36F32A.4080404@domain.hid \
--to=gilles.chanteperdrix@xenomai.org \
--cc=michel.he@domain.hid \
--cc=xenomai@xenomai.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.