On July 11, 2008 at 20:12, sydinstaller said...
Can someone please point me in the direction of some documentation
that describes RC5 code creation.
I don't know what you mean by "creation". If you hadn't mentioned MakeHex, I'd think you meant creating Pronto Hex for RC5. But apparently you know how to do that with MakeHex.
I have some Gefen codes.
I learnt them with the RTI learner.
Analyzed them with IRtool.
I assume that means the RTI learner gave you Pronto Hex in the form IRtool understands.
There is some tiny chance something is weird about the original codes that IRtool ignored but shouldn't have ignored. Post samples of the RTI learned Pronto Hex. Maybe I'll get some idea.
I know next to nothing about RTI, but maybe I'll spot something.
The generated codes work 100% on a Nevo
That seems to say they are correct.
but will not work
on an RTI. The learnt codes work on the RTI.
Sure sounds like a problem in the RTI understanding of Pronto Hex. But, since the learned codes work, you have samples of what it likes. MakeHex output can be adjusted easily (with the right tiny changes in the .irp file). I have seen other programs that consistently misunderstand Pronto Hex, so that you can make them work by giving them distorted Pronto Hex which balances out their misunderstanding of Pronto Hex.
My understanding
is that the RTI learner does not like RC5 codes all that
much.
Do you have URLs for some discussion of that issue? I think you might be referring to an unrelated problem: When a Pronto learns RC5, it stores it in a special form of Pronto Hex that other programs don't understand, so copy/paste from a ccf or pcf to another program usually won't work with RC5. But IRTool and MakeHex both work only with the most common form of Pronto Hex that those other programs understand (so your problem is NOT related to that special form of Pronto Hex).
Rather than asking for someone else to fix the problem
I wanted to try myself first.
So that should mean you already compared the learned codes that work with the generated codes that don't work and found the pattern to the difference.
Sorry, I can't open up your brain and pour in lots of knowledge about IR codes and Pronto Hex.
I can look at the learned codes and maybe spot the pattern in the differences between them and the generated codes. And/Or I can answer more specific questions. But I won't try to guess which aspects of this you don't understand in order to provide the info you might want.
I have read the documents on pronto codes available on
this website but they don't give enough info on RC5.
I've seen (and written) in RemoteCentral plenty of info about RC5, but I don't want to waste time searching for it, because I don't know what you think you want and I think you're wrong about RC5 being a significant factor. More likely the key is in RTI use of Pronto Hex.
You probably read the basic document about Pronto Hex (I don't have the URL handy now, but I've given it in many other posts). That should be all it takes to understand well enough to understand a comparison of working learned codes to non working generated codes.
