barryb
Posts: 4
Joined: Thu Jan 12, 2012 5:35 pm

Re: IR remote over hdmi

Wed Mar 07, 2012 12:09 pm

Hi all,

A little while back i saw a video which showed off the Rpi with a rotating video cube demo. It was and early video.

The demonstrator used a remote control from the TV to control the direction of the cubes rotation.

Does anyone know how this was done???

Barry

drgeoff
Posts: 7220
Joined: Wed Jan 25, 2012 6:39 pm

Re: IR remote over hdmi

Wed Mar 07, 2012 12:28 pm

barryb said:


Hi all,

A little while back i saw a video which showed off the Rpi with a rotating video cube demo. It was and early video.

The demonstrator used a remote control from the TV to control the direction of the cubes rotation.

Does anyone know how this was done???

Barry


http://en.wikipedia.org/wiki/HDMI#CEC

Your TV needs to have this feature built in.

itsonlyme
Posts: 124
Joined: Sun Feb 12, 2012 12:43 pm

Re: IR remote over hdmi

Wed Mar 07, 2012 12:39 pm

Do we actually need to use CEC? Surely a USB IR receiver with software would allow most IR remotes to do this.

However the only receivers I have found come with a remote, which in my case would mean a spare remote.

drgeoff
Posts: 7220
Joined: Wed Jan 25, 2012 6:39 pm

Re: IR remote over hdmi

Wed Mar 07, 2012 12:50 pm

itsonlyme said:


Do we actually need to use CEC? Surely a USB IR receiver with software would allow most IR remotes to do this.

However the only receivers I have found come with a remote, which in my case would mean a spare remote.


The remotes that come with non-CEC TVs tend not to have any spare buttons and IR codes which could be used by an IR receiver on the RP.

If you want only one remote then one way is to get a universal remote that will control at least two devices ie the TV and something else.  However, universal remotes never seem to have all the buttons and markings that the one supplied with the TV has. .

barryb
Posts: 4
Joined: Thu Jan 12, 2012 5:35 pm

Re: IR remote over hdmi

Wed Mar 07, 2012 1:11 pm

I guess the real question is if it is supported by the TV, how is that accessed on the pi?

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RaTTuS
Posts: 9442
Joined: Tue Nov 29, 2011 11:12 am
Location: North West UK

Re: IR remote over hdmi

Wed Mar 07, 2012 1:44 pm

Down the HDMI lead
How To ask Questions :- http://www.catb.org/esr/faqs/smart-questions.html
WARNING - some parts of this post may be erroneous YMMV

1QC43qbL5FySu2Pi51vGqKqxy3UiJgukSX
Covfefe

barryb
Posts: 4
Joined: Thu Jan 12, 2012 5:35 pm

Re: IR remote over hdmi

Wed Mar 07, 2012 4:59 pm

Well I have to honest I didn't think it was voodoo magic. What I meant was how it was accessed by say an application. Is a driver available for it?

TonyHoyle
Posts: 25
Joined: Thu Nov 24, 2011 3:34 pm

Re: IR remote over hdmi

Wed Mar 07, 2012 6:17 pm

The last time this came up there was no driver for it although the hardware is capable.

Who knows what an army of a million geeks can come up with though? :p

dom
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 5097
Joined: Wed Aug 17, 2011 7:41 pm
Location: Cambridge

Re: IR remote over hdmi

Wed Mar 07, 2012 7:36 pm

libcec is the plan.

Pulse Eight (http://libcec.pulse-eight.com/) seem keen on supporting Raspberry Pi, but it needs some work from our side to export an interface they can use.

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