Ok, this may be a stupid question, but can I piggyback 2 IR codes by editing them together? I don't want to write a macro to send 2 different codes, because I want to be able to hold the button down (volume control on 2 different components). Is there any way to do this, or is it silly?

Thanks,
Mark

I think it will probably depend on the specifics of the codes but, in theory, it should work.

Dave,

If I post the codes, can you help me piggyback them, or can I just put them back to back?

Mark

When I put them back to back, not changing the codes at all, PPENG says "invalid code". I am no pro at editing ir codes, so I could use some help if it is possible to do what I want. BTW, the reason I want to do this is I have 2 independent IR systems for my components. One of the IR systems is for the Whole House Audio, the other is for the HT. I have a receiver that I want to control the volume for the HT, and a preamp that I want to control the volume for Whole House system. If I can get both volume codes on the same button, then I can use the same pages no matter what system I am using.

Thanks,
Mark

No you can't just put them back to back.

Yesterday, I uploaded a tutorial on Understanding Pronto CCF Hex Codes. If you cannot figure out how to stitch them together after reading it, then I'll do it for you.

First, what type of codes are they? If RC5 or RC6 (i.e. Philips codes), this probably will not work. Even if ProntoEdit leaves them unchanged, there will be no way to handle the toggle bits. And, they will need to use carrier frequencies that are close to each other as both codes will be sent using a common carrier frequency.

Dave Houston
CodeGenPro™

One is russound (very short) the other is JVC (normal length). I will look at your tutorial. Thanks Dave. I'll let you know if I can't get it.

Thanks again,
Mark

Dave,

Would the two codes have to have the same header in order to do what I want them to, and then piggyback the rest onto the end of the first?

Mark

I looked at two Russound files. One had the same frequency word 006d as typical JVC signals, so combining would be possible. One had a much higher frequency.

Both Russound and JVC are repeating signals (the signal repeats as long as you hold the key).

You can't correctly combine them and keep both repeating. If you crudely combine them, both repeating, you end up with the signals alternating. That makes both wrong.

Pick one to go first and convert it to non repeating. In doing so you may want to expand it to more than one copy. Non repeating implies the number of copies doesn't vary with the length of the key press. It doesn't restrict you to one copy. You just need all the copies you want to be explicitly present in the Pronto Hex.

The second one can be left as repeating if you prefer, or can also be converted to non repeating.

For any simple conversion the first word of the header (0000 for JVC) must be the same for both. The second word should also be the same. But you probably get away with ignoring a small change in the second word (006d vs 006c or 006e). A moderate change in the second word can be compensated for by changing other words. A large change in the second word probably means it won't work.

The third and fourth words aren't supposed to match and you can't JUST piggyback. You must recompute the third and fourth words to correspond to the entire string of burst pairs that follow.

IF you combine the two burst series by simply piggybacking the second onto the the end, the proper adjustment for the header is:

new 3'rd word = (First code 3'rd word) + (First code 4'th word) + (Second code 3'rd word)
new 4'th word = (Second code 4'th word)

BUT, you may want a more advanced combination as I described in my previous post.

It ain't necessarily so.

JVC receiver Vol + code:

0000 006D 000C 0011 0014 003D 0014 0014 0014 003D 0014 0014 0014 003D 0014 003D 0014 003D 0014 003D 0014 0014 0014 0014 0014 0014 0014 0300 0014 003D 0014 003D 0014 0014 0014 0014 0014 0014 0014 003D 0014 0014 0014 003D 0014 0014 0014 003D 0014 003D 0014 003D 0014 003D 0014 0014 0014 0014 0014 0014 0014 0300

Russound Vol + code:

0000 0067 0000 0003 00DC 006E 0049 0090 0090 039B

Are these too different to merge?

Thanks,
Mark

Try...
0000 006D 0000 0020 0014 003D 0014 0014 0014 003D 0014 0014 0014 003D 0014 003D 0014 003D 0014 003D 0014 0014 0014 0014 0014 0014 0014 0300 0014 003D 0014 003D 0014 0014 0014 0014 0014 0014 0014 003D 0014 0014 0014 003D 0014 0014 0014 003D 0014 003D 0014 003D 0014 003D 0014 0014 0014 0014 0014 0014 0014 0300 00DC 006E 0049 0090 0090 039B

Score one for Dave :)

I didn't want to make my post absurdly long, so I ignored certain unusual cases, such as vol+ commands for parallel devices, where you actually do want to alternate commands as long as the key is pressed, rather than finish one before starting the other.

I'm not yet sure that is the intent here, but the fact that the commands are both vol+ makes it much more likely.

Dave,

I tried it. It controlled the JVC, but not the russound.

Mark

This is what I need John. I want both Volumes to be able to rise at the same time. Same with Vol - and mute.

Mark