From: Jean-Francois Moine <moinejf@free.fr>
To: "Németh Márton" <nm127@freemail.hu>
Cc: Hans de Goede <hdegoede@redhat.com>,
V4L Mailing List <linux-media@vger.kernel.org>
Subject: Re: [PATCH 1/3] add feedback LED control
Date: Sun, 28 Feb 2010 20:28:01 +0100 [thread overview]
Message-ID: <20100228202801.6986cb19@tele> (raw)
In-Reply-To: <4B8A2158.6020701@freemail.hu>
On Sun, 28 Feb 2010 08:55:04 +0100
Németh Márton <nm127@freemail.hu> wrote:
> On some webcams a feedback LED can be found. This LED usually shows
> the state of streaming mode: this is the "Auto" mode. The LED can
> be programmed to constantly switched off state (e.g. for power saving
> reasons, preview mode) or on state (e.g. the application shows motion
> detection or "on-air").
Hi,
There may be many LEDs on the webcams. One LED may be used for
the streaming state, Some other ones may be used to give more light in
dark rooms. One webcam, the microscope 093a:050f, has a top and a bottom
lights/illuminators; an other one, the MSI StarCam 370i 0c45:60c0, has
an infra-red light.
That's why I proposed to have bit fields in the control value to switch
on/off each LED.
Cheers.
--
Ken ar c'hentañ | ** Breizh ha Linux atav! **
Jef | http://moinejf.free.fr/
next prev parent reply other threads:[~2010-02-28 19:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-28 7:55 [PATCH 1/3] add feedback LED control Németh Márton
2010-02-28 19:28 ` Jean-Francois Moine [this message]
2010-02-28 19:38 ` Németh Márton
2010-03-01 9:03 ` Laurent Pinchart
2010-03-01 9:18 ` Jean-Francois Moine
2010-03-02 23:42 ` [RFC, PATCH 1/3] gspca: add LEDs subsystem connection Németh Márton
2010-03-09 11:27 ` Laurent Pinchart
2010-03-09 16:02 ` Richard Purdie
2010-05-06 18:14 ` [PATCH 1/3] add feedback LED control Mauro Carvalho Chehab
2010-03-01 9:01 ` Laurent Pinchart
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