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Software debouncing switches   Message List  
Reply | Forward Message #332 of 358 |
Re: [laser_design] Re: Software debouncing switches


A cleaner posting at my website:

<http://dx9s.ath.cx/node/83>

--Doug



----- Original Message ----
From: Douglas Marsh <dx9s@...>
To: laser_design@yahoogroups.com
Sent: Sunday, March 1, 2009 10:02:32 PM
Subject: Re: [laser_design] Re: Software debouncing switches


(PREAMBLE: sorry if I keep on seeming like I am re-hasing an old topic .. but
just want to share what information and work I've come up with.)

Okay... I've come to the conclusion that the simulating of an RC filter requires
a bunch of samples and the interval between samples needs to be considered.

[...]
Mon Mar 2, 2009 3:05 pm

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Forward 		Message #332 of 358 |
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I've done software de-bouncing before -- the question isn't what it is NOR is the question how to do it... Curious as to what is an accepted "de-bounce" period... 		Doug
dx9s
Offline Send Email 		Feb 17, 2009
5:17 pm

... I believe I do 100ms(0.1s). I don't have my code handy right now, but it's either 100ms or 100us......
izzy99337
Offline Send Email 		Feb 17, 2009
5:24 pm

Really as high as 100ms ... if you've are doing 100us (0.1ms) -- then that matches with what I've done that seems to work. Adding button debouncing to the ISR...
Douglas Marsh
dx9s
Offline Send Email 		Feb 17, 2009
6:22 pm

I almost always use 8, 16, or 32 msec as they are easy multiples of my 8KHz interrupt. 16 is my most common, and I use one byte to hold both a "reported to...
Brian Farley
ferret1963
Offline Send Email 		Feb 18, 2009
10:48 pm

yeah single bit at time is pretty easy.. if previous and current (over a time period) are high, set the "shadowed" bit value as high... duplicate for low (if...
Douglas Marsh
dx9s
Offline Send Email 		Feb 20, 2009
2:28 am

For what it's worth.. I've boiled down the software debouncing of 8-bits into a few basic steps that can be implemented in 'C' (and converted into assembler...
Doug
dx9s
Offline Send Email 		Feb 20, 2009
7:59 pm

I was a little off (and because C18 is a little different that midline assembler, the 'C' compiler spit out a little bit more code): (copy/paste from...
Douglas Marsh
dx9s
Offline Send Email 		Feb 20, 2009
9:26 pm

I found this article on software debouncing and there seems to be a wide range of techniques and thought put into the article: ...
Doug
dx9s
Offline Send Email 		Mar 2, 2009
2:45 am

(PREAMBLE: sorry if I keep on seeming like I am re-hasing an old topic .. but just want to share what information and work I've come up with.) Okay... I've...
Douglas Marsh
dx9s
Offline Send Email 		Mar 2, 2009
6:02 am

A cleaner posting at my website: <http://dx9s.ath.cx/node/83> --Doug ... From: Douglas Marsh <dx9s@...> To: laser_design@yahoogroups.com Sent: Sunday,...
Douglas Marsh
dx9s
Offline Send Email 		Mar 2, 2009
3:05 pm
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