Re: Remote that breaks current system
From: Jarod Wilson <hidden>
Date: 2010-08-17 03:40:14
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linux-media
On Mon, Aug 16, 2010 at 11:30 PM, Mauro Carvalho Chehab [off-list ref] wrote:
Em 16-08-2010 21:14, Jarod Wilson escreveu:quoted
quoted
Just one minor nitpick. You could 'use' the original RC5 decoder, but add a knob to it to make it accept 15 bits instead of 14. However, this will require some interface changes.Well, I think that still falls down if someone, for some reason, wants to use both an old RC5 remote and the Streamzap remote at the same time. I think a parallel decoder is probably the best situation for the moment, as both 14-bit RC5 and Streamzap RC5 can be decoded simultaneously.One option could be to change rc5 decoder to work with 3 different modes, controlled by a sysfs node: 1) just 14 bits code; 2) just 15 bits code; 3) both 14 and 15 bits code. For (3), it will need a timeout logic for a short period (like 2T), for the 15th bit. If nothing happens, it will assume it is 14 bits, producing a code and resetting the finite-state machine. By default, it would be working on 14-bits mode for normal RC decoders, and on 15-bits mode for Streamzap. Yet, IMHO, the better is to commit what you have currently. Just my 2 cents.
Yeah, I don't doubt that we *could* come up with some way to make them coexist in the same decoder, but I think its probably not worth the effort or added complexity over simply having a separate parallel decoder (which is only loaded by default if the receiver bundled with the funky remote is plugged in). -- Jarod Wilson jarod@wilsonet.com