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Subject: RE: Remote control with display
From: Andreas Stemmer (
Date: 2002-10-04

> The other option would be to have the 'new' remote send a
> "hi, im an LCD enabled remote" message when it is first
> plugged in. This would enable the Archos to differentiate
> between the standard and LCD remotes, and behave accordingly.

I thought about this solution as well, but I think there are some
1. The jukebox has to remember the type of remote which makes is a
little bit more complicated (not very much) for the rockbox guys.
2. How should the remote know when it is first plugged in? We would need
something like a connect-button on the remote or a remote that
recognizes if it doesn't get any screen updates.
3. How does the jukebox know, if the user changes from LCD-remote to

> The Archos could then send data with each screen update,
> which could be merged into the code quite easily I would
> imagine. The Archos would keep the line in recieve usually,
> until it is required to send data - at which point it quickly
> switches to transmit, send the data, and swiches back. The
> buffer resistor would need to be in the remote, maybe with a
> recieve only pin on the 'outside' side of the resistor to
> sense any contention (when both the remote and Archos send at
> once). The remote would then have to wait for the contention
> to end, re-send its data, and also a 'please resend' command
> to the Archos for its data.

I agree, but there's one more point:
4. I don't want to have an exact copy of the archos display on my remote
(sometimes perhaps). A small remote (or my planned car stereo solution)
could have a small display with one line only and then I'd like to have
the possibility to decide what I want to have displayed there.

I'm a little bit busy at the moment, but I think we should just try
which solution works best. If we have the hardware working, it won't be
a big problem to adjust the software (rockbox and remote) working the
one or the other way and measure power consumption etc.

Andreas Stemmer

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