From: damateem <damateem4@gmail.com>
To: linux-media list <linux-media@vger.kernel.org>
Subject: select() timeout in video capture example
Date: Fri, 11 Nov 2011 11:46:26 -0500 [thread overview]
Message-ID: <4EBD5162.2010406@gmail.com> (raw)
I'm trying to use a dm355-leopardboard to capture images.
When I execute the capture example from the Video for Linux Two API
Specification: Revision 0.24
(http://v4l2spec.bytesex.org/spec/a16706.htm), it always time's out on
the select() call. I'm not sure where to start looking for the cause of
this problem. The ccdc and camera are passing registration.
[ 2.020000] vpfe_init
[ 2.020000] vpfe-capture: vpss clock vpss_master enabled
[ 2.030000] vpfe-capture: vpss clock vpss_slave enabled
[ 2.040000] vpfe-capture vpfe-capture: v4l2 device registered
[ 2.040000] vpfe-capture vpfe-capture: video device registered
[ 2.050000] mt9v113 1-003c: Detected a mt9v113 chip ID 2280
[ 2.170000] mt9v113 1-003c: mt9v113 1-003c decoder driver registered !!
[ 2.180000] vpfe-capture vpfe-capture: v4l2 sub device mt9v113 registered
[ 2.190000] vpfe_register_ccdc_device: DM355 CCDC
[ 2.190000] DM355 CCDC is registered with vpfe.
Furthermore, by inspecting the electrical interface to the camera, I
have verified that the camera is transmitting pixel data.
What things would cause select() to timeout? Should I look for something
in the drivers?
I'm using kernel version Arago/2.6.31+2.6.32-rc2-r52+gitr.
Thanks,
David
reply other threads:[~2011-11-11 16:48 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=4EBD5162.2010406@gmail.com \
--to=damateem4@gmail.com \
--cc=linux-media@vger.kernel.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.