Rockbox.org home
release
dev builds
extras
themes manual
wiki
device status forums
mailing lists
IRC bugs
patches
dev guide



Rockbox mail archive

Subject: Re: stupid question
From: George Styles (george_at_ripnet.co.uk)
Date: 2002-08-19


I kinda asked this before, but on a similar note, is the following a daft
suggestion:

I am assuming that the serial line can be configured from software to be a
simple digital input, which is bi-directional. If this is the case, can we
do the following:

Usually have it set as an output, with 1 (+3.3v) on it.
Connect a capacitor across it and ground, to store some 'juice'
Use a simple push-to-make switch to ground it through a potential divider
Each (say) 1/100s we could flip the digital line to an input, and read it.
If its 0, the switch is down, if its 1, the switch is not down
Bingo! we have an input, with just a couple of passive components, and no
battary

Can someone who has studied the schematics/ knows the SH2 processor tell me
if this is possible? i would be quite happy with a single swith, 1
press=play/pause, 2 = skip, 3 = back, like old Sony diskmans

I know we could 'mod' the unit to re-direct the remote pin to an analog
input in an internal dividor, but my warrenty sticker stays intact at least
for one year :)

cheers
g

----- Original Message -----
From: "Nielsen Linus (ext)" <Linus.Nielsen_at_elema.siemens.se>
To: <rockbox_at_cool.haxx.se>
Sent: Monday, August 19, 2002 12:49 PM
Subject: RE: stupid question

> > Can the Archos be aware that the level is set to 0 (with the
> > impedance or something) ?
>
> Nope. There is no way of doing that, sorry. Not without a hardware mod.
>
> /Linus
>



Page was last modified "Jan 10 2012" The Rockbox Crew
aaa