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Discrete Code Hunter Forum - View Post
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The following page was printed from RemoteCentral.com:
| Topic: | Code Formats? This thread has 3 replies. Displaying all posts. |
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| Post 1 made on Tuesday November 22, 2005 at 22:08 |
Frankie V Lurking Member |
Joined:
Posts: | November 2005
9 |
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Hi, could anyone tell me where to find code formats used by specific brands? Im trying to clean up some Indovision TV/Sat codes (amongst other things) and I'm not completely certain I have it right:
Sample: (keypad '1')
0000 006d 0022 0002 0155 00ac 0016 003f 0016 0014 0016 003f 0016 0015 0016 0014 0016 003f 0016 0015 0016 003f 0016 0014 0016 003f 0016 0015 0016 003f 0016 003f 0016 0014 0016 003f 0016 0015 0016 003f 0016 0014 0016 0015 0016 0014 0016 0015 0016 0014 0016 0015 0016 0014 0016 0015 0016 003f 0016 003f 0016 003f 0016 003f 0016 003f 0016 003f 0016 003f 0016 05f6 0156 0055 0016 0e49
So Im assuming:
Lead In = 0156 00ab
"1" = 0016 0040
"0" = 0016 0014
Lead Out = 0016 0593
Is this accurate?
Also, does this code imply a different Lead In/Out for the repeat sequence?
regards,
Frankie
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| Post 2 made on Wednesday November 23, 2005 at 07:58 |
johnsfine IR Expert |
Joined:
Posts: | September 2002
5,159 |
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If you want to clean codes, it's easier to decode them with DecodeIr.dll together with either DecodeCCF.exe or the JP1 version of IrTool.exe. Then reencode them with MakeHex.exe or the new program MakeLearned.Jar
Most Brands use several different code formats and most code formats are used by several different brands.
The signal you posted is a version of the NEC protocol that we call NEC1 (NEC documented the two main versions of their protocol, but didn't give them distinct names).
This code does have a different Lead In/Out for the repeat sequence. (The last four values are the repeat sequence, which in NEC1 is nothing but lead In/Out).
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| OP | Post 3 made on Wednesday November 23, 2005 at 17:54 |
Frankie V Lurking Member |
Joined:
Posts: | November 2005
9 |
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Hey! I really appreciate this feedback, you've saved me much wasted life-time... its a little to-and-fro between programs but it works. I assume that the specs given in the makeHex .irp file. override the output parameters in the decodeCCF file (eg. if decodeCCF outputs a frequency of 38.381 for NEC1 and the makeHex.irp says NEC1 = 38000, then I go with that?)
regards,
Frankie
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| Post 4 made on Wednesday November 23, 2005 at 21:09 |
johnsfine IR Expert |
Joined:
Posts: | September 2002
5,159 |
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IR receivers are very approximate about frequency. DecodeCCF says 38.381 because that's what the Pronto Hex encodes. But don't jump to the conclusion that the frequency is really that.
But it also wouldn't matter whether the irp file says 38000 or 38381. The device finally getting the signal won't care about that small a difference.
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