Thread (7 messages) 7 messages, 4 authors, 2018-12-18

Re: [rfd] saving old mice -- button glitching/debouncing

From: Vojtech Pavlik <hidden>
Date: 2018-12-15 10:12:26
Also in: lkml

On Sat, Dec 15, 2018 at 10:47:22AM +0100, Pavel Machek wrote:
quoted
quoted
b) would it be acceptable if done properly? (cmd line option to
enable, avoiding duplicate/wrong events?)
Well, for one, you shouldn't be using a timer, all the debouncing can be
done by math on the event timestamps.
Not... really, right? You need to send an release some time after
button indicates release if bounce did not happen. It is similar to
autorepeat needing a timer.
You can send the first release and ignore all presses and releases in a
time window after that.
Let me gain some experience with the patch. I don't think hardware
does as heavy debouncing as you describe.
Microswitches vibrate significantly when clicked. Without hardware
debouncing, you'd have many clicks instead of one even on a new mouse.


-- 
Vojtech Pavlik
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