From: simon@mungewell.org
To: "David Herrmann" <dh.herrmann@gmail.com>
Cc: linux-input@vger.kernel.org,
"Dmitry Torokhov" <dmitry.torokhov@gmail.com>,
"Jiri Kosina" <jkosina@suse.cz>,
"Benjamin Tissoires" <benjamin.tissoires@gmail.com>,
"Peter Hutterer" <peter.hutterer@who-t.net>,
"Antonio Ospite" <ospite@studenti.unina.it>,
linux-kernel@vger.kernel.org, input-tools@lists.freedesktop.org,
"David Herrmann" <dh.herrmann@gmail.com>
Subject: Re: [PATCH 0/4] Input: ABS2 and friends
Date: Tue, 17 Dec 2013 16:28:41 -0500 [thread overview]
Message-ID: <190d226e64e177a3cb631b8fc6f4787c.squirrel@mungewell.org> (raw)
In-Reply-To: <1387295334-1744-1-git-send-email-dh.herrmann@gmail.com>
> Hi
>
> This implements the recently discussed ABS2 API. It's working fine on my
> machine with libevdev. Comments welcome!
Just looking at the documentation file, I have a couple of suggestions.
1). Make a note on the direction of gravity wrt the example image. Ie what
which axis/value will be positive with the device laid flat/stationary on
a desk. Might just prevent some confusion later.
2). Calibration, Accels and Gyros are noisy in different ways. Gyros tend
to be wrong in the long term, giving some consistant bias which should be
calibrated out. Accels are noisy in the short term, but generally right
over a long period.
Am I correct that the event framework will provide time-stamping of data,
thus making computation of relative movements possible.
Simon
next prev parent reply other threads:[~2013-12-17 21:28 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-17 15:48 David Herrmann
2013-12-17 15:48 ` [PATCH 1/4] Input: uinput: add full absinfo support David Herrmann
2013-12-18 22:27 ` Peter Hutterer
2014-01-12 19:40 ` Dmitry Torokhov
2014-01-12 19:38 ` Dmitry Torokhov
2013-12-17 15:48 ` [PATCH 2/4] Input: introduce ABS_MAX2/CNT2 and friends David Herrmann
2013-12-18 14:27 ` Antonio Ospite
2013-12-18 14:44 ` David Herrmann
2013-12-18 16:36 ` Dmitry Torokhov
2013-12-18 23:21 ` Antonio Ospite
2013-12-18 14:47 ` Dmitry Torokhov
2013-12-18 23:40 ` Peter Hutterer
2013-12-18 23:48 ` Dmitry Torokhov
2013-12-18 23:55 ` Peter Hutterer
2013-12-19 0:05 ` Dmitry Torokhov
2013-12-19 0:25 ` Peter Hutterer
2013-12-19 0:34 ` Dmitry Torokhov
2013-12-17 15:48 ` [PATCH 3/4] Input: remove ambigious gamepad comment David Herrmann
2013-12-17 15:48 ` [PATCH 4/4] Input: add motion-tracking ABS_* bits and docs David Herrmann
2013-12-18 14:29 ` Antonio Ospite
2013-12-17 16:34 ` [PATCH 0/4] Input: ABS2 and friends David Herrmann
2013-12-17 21:28 ` simon [this message]
2013-12-18 8:12 ` David Herrmann
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