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Topic:
Newbie and translation of IR codes to hex
This thread has 5 replies. Displaying all posts.
Post 1 made on Sunday January 6, 2008 at 13:32
virtuapete
Lurking Member
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January 2008
8
Hey guys,

I am new to this forum with the recent purchase of a Marantz RC9500. I was given an excellent deal and have decided to take the plunge. I come from a fairly technical background yet reading alot of the posts here have escaped me regarding conversion of manufacturer supplied IR codes to the usable hex the this family of remotes understands.

The unit in question is also a fairly new piece of AV equipment, the Denon AVR-3808ci. I have located a manufacturer supplied PDF containing all the discrete codes for my unit, located here: [Link: usa.denon.com]

Although the document looks thorough, I have no idea where the pertinent pieces of information lie to use a tool such as makehex or one of the others, although it seems I have downloaded them all to no avail.

Is there someone out there willing to walk me through the steps in my specific case so I may fully understand the process and how to get the information I am looking for? Thanks again in advanc e and its great to join the community!

Pete
Post 2 made on Sunday January 6, 2008 at 15:29
johnsfine
IR Expert
Joined:
Posts:
September 2002
5,159
Several people have done that same translation before. I expect some of them have posted the resulting Pronto Hex and/or CCF files. So you may find it easier to find the work already done somewhere on this site, than to do it again yourself.

On a simple search, just now, I found only TGrugett's post at
[Link: remotecentral.com]
that is clearly on topic for you. I didn't find his follow up to that, though I'm sure it's around here somewhere.

But in case you can't find the work already done, here is the explanation:

When the Denon documentation says the format is "Sharp", that is the format that is called "Denon" in MakeHex, so you use the Denon.irp file.

When the Denon documentation says the format is "Kaseikyo", that is the format that is called "Denon-K" in MakeHex, so you use the Denon-K.irp file.

Denon-K was added to MakeHex.zip fairly recently, so you may need a new copy from
[Link: hifi-remote.com]

For the "Denon" (Sharp) protocol, you need to look at three values in the Denon documentation:
*)System Address: That is a backwards binary number so you must reverse it left to right, then convert from binary to decimal, then use it as the "Device" number in Denon.irp (that is the only thing you need to edit in Denon.irp). Example: The first system address in that file was 01000. Reversed and converted to decimal, that is 2. So those signals are DEnon device 2.
*)No.: That is part of the function number. It is already in decimal. For example, the first command listed is "Power" with an "No." value of 1.
*)Extension: That has one of four possible values, three of which require that you change the "No." value to get the function number:
00 -> Function = No.
10 -> Function = No. + 64
01 -> Function = No. + 128
11 -> Function = No. + 192
For example, the Extension of 11 tells you the function number for "Power" is 193 (1 plus 192).

For the "Denon-K" (Kaseikyo) protocol, you also need to look at three values in the Denon Documentation. All three are in backwards binary as described above. Most Denon documentation has some of those numbers in decimal, but the document you linked seems to have them only in backwards binary.
To change numbers from binary to decimal, you might want to use Windows calculator in view scientific mode.
*) Genre1: That is the number before the . in Device
*) Genre2: That is the number after the . in Device
*) Data and ID together: That is the function number.

Last edited by johnsfine on January 6, 2008 17:46.
OP | Post 3 made on Sunday January 6, 2008 at 17:44
virtuapete
Lurking Member
Joined:
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January 2008
8
I look forward to hearing the rest of what you have to say John! I completely understand everything you have laid out so far and thank you soo much for taking the time out to explain it to me using my example, it has made things so crystal clear to me so far!

I did find that post but unfortunately no follow-up and have also done a search on the files section only to come up with a URC-MX900 based file, of which I have no idea to read/use either. I don't want to waste anyone's time if work has already been performed but perhaps I ahve been looking in the wrong places?

At any rate I really appreciate the feedback so quickly and look forward to more should you have it to provide!

Last edited by virtuapete on January 6, 2008 17:51.
OP | Post 4 made on Sunday January 6, 2008 at 19:06
virtuapete
Lurking Member
Joined:
Posts:
January 2008
8
:)

Last edited by virtuapete on January 6, 2008 19:14.
OP | Post 5 made on Sunday January 6, 2008 at 19:14
virtuapete
Lurking Member
Joined:
Posts:
January 2008
8
Thanks John
Post 6 made on Thursday January 17, 2008 at 00:00
jhurlbut
Founding Member
Joined:
Posts:
March 2002
10
John, this is exactly what I was looking for! I too have the Denon documentation for my AVR-4308ci and was clueless as to how to proceed. You've made my life MUCH easier and my Wife thanks you for getting our Pronto back!


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