[mythtv-users] MythTV Raspberry Pi2 - GPIO IR - Multiple Key-presses from remote control
Kingsley Turner
krt at krt.com.au
Wed Jan 13 19:06:14 UTC 2016
On 13/01/16 14:22, Larry Kennedy wrote:
>
>
> On Thu, Jan 7, 2016 at 4:41 AM, Joseph Fry <joe at thefrys.com
> <mailto:joe at thefrys.com>> wrote:
>
>
>
> On Wed, Jan 6, 2016 at 6:22 PM, Kingsley Turner <krt at krt.com.au
> <mailto:krt at krt.com.au>> wrote:
>
> Greetings,
>
> So I have my Raspberry PI GPIO Infra-Red remote mostly working fine.
>
> I can see messages debugging with 'irw', all the codes are
> correct, etc.
>
> However in mythfrontend (and irw) I quite clearly get multiple
> keypresses; 99% double, sometimes single, sometimes triple.
> e.g.:
> pi at raspberrypi:~ $ irw
> 00000000807f9867 00 KEY_ENTER noontec_a6
> 00000000807f9867 01 KEY_ENTER noontec_a6
>
> Reading many of the various posts for MythTV (and XBMC, etc.) the
> proposed solutions are not applicable to RPi.
>
> One thing I have tried, is creating an /etc/lirc/lircrc file which
> specifies button handling:
>
> begin
> button = KEY_ENTER
> delay = 5
> repeat = 3
> #prog = irexec
> #config = echo KEY_ENTER
> end
>
> I added a clause like this for every key.
>
> If I run 'irexec' with those two commented-out lines back in, and
> press keys, the remote does behave as-if the lircrc file has made
> a difference. Indeed, changing the delay & repeat allowed me to
> tune button pushing so there was no unwanted repeats - but only
> for irexec.
>
> Should I expect 'irw' and MytvTV to respect this lircrc file ?
>
> Is there something I'm missing?
>
>
> First of all... IRW doesn't really use your lircrc, so those options
> will have no effect.... it is showing every signal the receiver gets.
>
> You are doing the right thing playing with the delay and repeat, but
> should be testing in mythtv or irexec or whatever.... not lirc.
> Additionally, if you really hate seeing the repeats in IRW, you can
> actually have lircd ignore repeats using the suppress_repeat directive
> in your lircd.conf. see: http://www.lirc.org/faq.html
>
> Every time I press a button on my remote control irw will show at
> least 5 events (or any other number > 1) independent of how short
> I try pressing the button.
> In most cases this is the correct behavior. Many remote controls
> send the same code multiple times to make sure that at least one
> code comes through to the receiver when you press a button for a
> short time. The default .lircrc setup ignores repeat events. If
> you want to use the button to do things repeatedly when it is
> being hold down, like e.g. increasing the volume or something
> similar, you should use the /delay/ token (will be available in
> 0.7.0) in your .lircrc file.
> You can identify such remotes by the fact that irrecord usually
> will add a /min_repeat/ field for this remote control to the
> lircd.conf config file.
> If you want to suppress those repeats already at lircd level, you
> can also add /suppress_repeat x/ to the lircd.conf config file
> where /x/ is the number of repeats you want to suppress. This
> feature is available in lircd since release 0.8.6.
>
>
> Sometimes you can tweak other things in lircd.conf to resolve this
> problem... such as your gap, repeat_gap, min_repeat, etc.
>
> If you used irrecord to create your remote file, you might want to do
> it again and make a point to hold each button for at least a
> second.... irrecord should have detected that your remote is sending
> repeats and set a min_repeat value in the lircd.conf. If you didn't
> use irrecord, and your using some pre-generated remote
> configuration... you might want to try using it.... I have found that
> some of the prefab ones are not quite right for some hardware.
>
> I'm not sure if this might impact the pi... but it's also worth a
> shot: https://www.mythtv.org/wiki/MCE_Remote#Arrow_Buttons_Repeat
>
> Good luck... I'm sure you'll figure it out eventually.
>
>
>
> If you are running lircd and a modern kernel,both could be responding to
> your key presses. See section entitled, */Double presses for certain
> buttons/*, at this link on how to verify this and write a udev rule to fix it:
>
> https://www.mythtv.org/wiki/LIRC
>
>
Hi Larry,
I did read all this (and other) help pages, but the first problem you
encounter on the RPi, is that stuff like:
/sys/class/rc/rc0/protocols
don't exist. IIRC, this directory only exists up to /sys/class/rc and then
it's empty.
I think Joseph's comment will lead to a solution, but I've been a bit too
busy with work to devote more time to it as yet,
cheers,
-Kingsley
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