LIRC / MythTV setup questions

[Christopher S. H. <ch...@vi...>]

Hello,

It's become time to update my mythtv. This change is being driven by the fact that the
Scientific Atlanta 4250 set top box which my cable provider, Altice / Optimum, choose so
many years ago will no longer be supported sometime in August. My current setup doesn't
require lirc, I use firewire tochange channels but the new cable box, an Optimum branded
Samsung SMT-C5320 doesn't respond to the firewire like the SA4250.

My equipment is an FTDI FT230X transmitter setup in lirc under Rocky Linux 9.

I've installed the following modules:

    libftdi-1.5-2.el9.aarch64

    lirc-libs-0.10.0-36.el9.aarch64
    lirc-core-0.10.0-36.el9.aarch64
    lirc-tools-gui-0.10.0-36.el9.aarch64
    lirc-drv-ftdi-0.10.0-36.el9.aarch64
    lirc-doc-0.10.0-36.el9.noarch
    lirc-config-0.10.0-36.el9.noarch

I'm running:

    # lircd --driver=ftdix --device "serial=D<serialno>,output=3"

to start lircd. I think everything is running okay. 

I'm at the stage of trying various remote modules to control the power and the channel on
the current cable box. I'm only getting one warning and I don't know if it's significant:

    ... lircd-0.10.0[18356]: Warning: Failed to set scheduling policy to SCHED_FIFO:
                             Operation not permitted Sending will not run with real-time
			     priority and you may suffer USB buffer underruns causing
			     corrupt IR signals


I'm hoping that I'm on the right track and that the problem that I have is that I'm just
using the wrong driver for the Samsung set top box. I do know that Optimum set these cable
boxes up to respond to the same remote control that they issued for their SA boxes like my
SA4250 so I suspect that my box needs custom code but I don't have a way to test that.

I think that my next steps are to:

1. Setup some sort of IR receiving capability so I can use `irrecord` to capture the codes
   that my remote is sending and create a new remote file?


------------------------------------------------------------

Does a proper remote file `xxx.lircd.conf` exist for this cable box and am I just missing
it?

Is the approach I outlined a good way to get to what I need?

Am I overlooking something else?

P.S. I do have a hauppauge HD-PVR, my capture device for MythTV. Would setting that up as a
capture device be a good plan or should I just find some simple, $20 or less IR receiver
that's support to save myself some trouble?


-- 
Chris

      __o          "All I was trying to do was get home from work."
    _`\<,_           -Rosa Parks
___(*)/_(*)____.___o____..___..o...________ooO..._____________________
Christopher Sean Hilton                    [chris/at/vindaloo/dot/com]