Learning oem codes

Cue · Post by **Cue** » Wed Oct 07, 2009 9:43 pm

Hi all,

I am new to JP1. I have a Comcast JP1 compatible remote that I want to modify. I just purchased a home theater sytem by LG (LHB977). The code for LG (20741) only controls the DVD player, not the audio or input buttons. I do not have a JP1 cable yet.

While I do not have a learning remote, I do have a laptop with an IR receiver. Is it possible to use this to read what codes my LG remote is sending so that I may add advanced codes to the Comcast remote? If so, what program should I use to read the oem codes?

Thank you for your help.

Post by **vickyg2003** » Thu Oct 08, 2009 6:20 am

Hello Cue,

To clarify, your remote is a JP1.3 remote, should you ever decide to buy a cable, that's an important distinction.

I'd like you to test a few Advanced codes

00229 Volume +
00233 Volume -
00232 Mute

With your remote in Aux/20714 mode and your LG on.

Point your remote at the LG HTIB
Short press of the Setup Key
Type 0 0 2 2 9

Did that turn up the volume?

johnsfine · Post by **johnsfine** » Thu Oct 08, 2009 7:03 am

Cue wrote:I do have a laptop with an IR receiver. Is it possible to use this to read what codes my LG remote is sending so that I may add advanced codes to the Comcast remote?

In this group, we don't have much experience using the built-in IR receivers of laptops or other PC's. So I doubt that anyone here will know what program you can use.

Some people in the Windows LIRC project have figured out how to use some built in IR receivers on some PCs. I haven't investigated the details. Even they, mostly use external IR receivers built for LIRC (rather than figuring out the undocumented software interface to the built in IR receivers).

We don't have any programs for translating from the files captured by LIRC learning and the advanced codes used by JP1 remotes. But some of us know how to do the translation. So if you manage to get LIRC data, post it and someone will help you with it.

Hopefully, you won't need to do any IR learning. I haven't looked up details of the setup code you're using, nor what models of Comcast remotes exist, nor what data is posted here, RemoteCentral, or elsewhere on LG HTIB's (sounds like Vicky is ahead of me on all those questions) but probably the IR data you want is posted somewhere and the experiment Vicky is suggesting is a step toward figuring out how to use such data on your remote.

Post by **vickyg2003** » Thu Oct 08, 2009 8:58 am

Well I may be "ahead" of John, but I was asleep at the switch when I computed the Advanced codes.

I'm pretty sure your HTIB uses a NEC 4dev Combon 45 45 110 145. This combination isn't in your remote, but we can make this work with a helper code.

Temporarily set your AUX to AUX/21237

07653 Volume +
08655 Volume -
08421 Mute

Test as above,

If these work you can "keymove" or "paste" these functions onto the approriate key and then switch back to the code that worked before. We can probably compute the discrete inputs from the LG Audio codes.

For input
00145 Input/Toggle on Aux/20714

Cue · Post by **Cue** » Fri Oct 09, 2009 10:21 pm

Okay. I tried all of the codes supplied. None of them had any affect on the HT box except that the red light that acknowledges IR activity blinked.

I'm looking onto WinLIRC now. Thanks.
By the way, the IR receiver on my laptop is CIR not IrDA.

I already searched the forums here and the RemoteCentral page. So far, I haven't found any codes for any LG HTIB.

Are any of these programs options?
CaptureIR
IRscope

johnsfine · Post by **johnsfine** » Sat Oct 10, 2009 6:11 am

CaptureIR and IRscope each require specific IR receive hardware. The built-in IR receiver on a laptop would not match either.

Cue · Post by **Cue** » Wed Oct 14, 2009 9:30 pm

So, WinLIRC doesn't support laptop CIR receivers. LIRC does, but the current version hasn't been ported to Windows yet.

I found the lookup tool next to the file search and there are some EFC codes that look like they should match. How do I turn these EFCs into advanced codes to try for my remote (Comcast 1167)?

3FG · Post by **3FG** » Wed Oct 14, 2009 10:53 pm

Cue,
An Extended Function Code (EFC) is a synonym for Advanced Code. So you would just assign a setup code to a device button, then send test EFCs by pressing setup, and keying in the EFC.

Post by **vickyg2003** » Wed Oct 14, 2009 11:26 pm

I found the lookup tool next to the file search and there are some EFC codes that look like they should match. How do I turn these EFCs into advanced codes to try for my remote (Comcast 1167)?

To use Efc's or advanced codes without a cable, you need to find a built-in device code to format the EFCs into the proper signal. If there is an exact match in your remote, you just use the a 5 digit version of the EFC. If there isn't an exact match, sometimes a combo code version might work. If you are not using the exact match to carry the efc, you need to recalculate the efc using RM or KM.

Necx1 45.45 has 3 input togles

00030
00145
00104
We haven't tried 104 yet.

----------

BTW More brand info has been added since you last asked, and I'd like you to try TV 11993 and see if the volume and input work your HT.

Post by **vickyg2003** » Thu Oct 15, 2009 2:49 pm

I couldn't find a prontoedit NG file that would open a TSU7000 file, but it might help to see what this version of an LG HTIB would show.

LG HT502thw Home theater in a box TSU7000

I finally got the file to open only to realize its the NECx1 44.44 signal , but there isn't any code to piggyback so this would be a no-go

You might want to try contacting LG and get the technical spec for your HT directly from them.

Cue · Post by **Cue** » Thu Oct 15, 2009 10:01 pm

11993 changes the volume on my LG TV (32LC2D). It did not do anything to the HTIB, not even the LED acknowledging IR activity.

The EFCs that I wanted to try from your lookup page were from setup code 21906. Are you saying that since this setup code is not in the remote, that those EFCs can not be used either?

Post by **vickyg2003** » Thu Oct 15, 2009 10:38 pm

Are you saying that since this setup code is not in the remote, that those EFCs can not be used either?

There is no Necx1 44.44 built into the remote, and no NEC combo that has 44.44, so without a cable you can't try those codes.

We don't "know" of any efc's for volume that work with a 45.45 code, but that doesn't mean there are none. However doing a brute force test of the 255 possible codes can get you into service menus and factory resets.

Without a learning remote&cable you are kind of out of luck.

drtonyc · Post by **drtonyc** » Mon Oct 26, 2009 8:20 pm

Using a learning remote, I built a device upgrade RMDU file for my LHB953 -- which I understand is the same remote as for the LHB977 home theater system.

The file is in File Section -> JP1 File Section -> Device Upgrades -> HT Systems -> LG LHB953 and LHB977 Blu-Ray Home Theater System

Enjoy!

-Dr. C.

Cue · Post by **Cue** » Sat Oct 31, 2009 9:29 pm

Thanks!
I'll need to buy or make a JP1 connector to use this. I'll do that if that is what is necessary.
Can anyone confirm from looking at the RMDU that the EFCs can't be programmed with the built in protocols?

3FG · Post by **3FG** » Sat Oct 31, 2009 11:16 pm

The Vol+/- and mute keys all require NECx1 44.44. That protocol simply is not available in any Comcast remote, and there is no way to manually enter EFCs to make it work.

Your choices are either get a JP1.3 cable, or buy a remote which carries the protocol. Use the Lookup Tool near the top of this page, Protocol Search, to search for NECx1 protocol with device 1 = 44. You'll see Audio 1293 and 2197 or Video 1906, and you can see which remotes carry this protocol. You'll need one which can also do device 45. For example the new RCA RCRP05B ($20 at BestBuy) would work, and looks very similar to the Comcast 1167.

My recommendation would be to spend the $35 (shipped) to get Tommy's USB cable. Way more flexible.

JP1 Remotes

Learning oem codes

Learning oem codes

Re: Learning oem codes

RMDU file uploaded for LHB977