Hello all, hoping someone can send me off in the right direction for my questions.

I am trying to setup my mediapc so that it's controlled by the remote control for my TV but I am having some problems with the message format.

I have an IR receiver that accepts the signal but the decoding is an issue.
So what I am wondering is if anyone know what protocol and timings Pioneer uses in their current lineup?
I have looked at the IR codes present on the Pioneer site but they look absolutely nothing like the ones the remote sends, all the codes on Pioneers site are 56/64 bits (8 chars, dunno if they are coded as 7 bit or 8 bit each).

I can't figure out what the codes with a ton of 4-digit groups are so I'm not sure if they match what I am seeing.

The codes I receive from the remote all begin with 7FFFFFFFF and seems to end with 0000000000 (which makes the IR receiver stop taking the signal) and are 64 bytes in total, followed by a 19 byte signal. Most of the buttons repeat this 2 times (ie 64 bytes, 19 byts, 64 bytes, 19 bytes, done).

As a side note, does anyone know if Pioneer uses 38 or 40KHz frequency? (Or another for that matter). I have a 38KHz receiver that seems to accept the signal but I'm not sure of the tolernace levels and the effect of bordering on them.


Any help or suggestions on where to find more information are very appreciated,
/Shadowsoul

If I understand your intent correctly, you want to use a Pioneer remote, which sends the Pioneer IR protocol, and have your mediapc respond to the signals. So you want to know what the Pioneer IR protocol looks like.

It is modulated at 40KHz, and otherwise is identical to the NEC2 IR protocol. Look at DecodeIR.html in this file for further information.

However, Pioneer IR signals, especially for their newer products, aren't a very good candidate for adaption to other uses.  The 8 character codes are actually 2 groups of 4 hexadecimal digits in the format ddff ddff, where dd is a device number and ff is a function number.  In principle, that scheme can represent 65536 functions designated for up to 65536 devices.  For example, the IR signal for Input 1 is AA5A+AF7A.  That's device 170, function 90 followed by device 175, function 122.

IR signals are made up of burst pairs, and an alternate way to describe the signals is called Pronto Hex.  That's the  long strings of 4 hexadecimal digits you see in the Pioneer documentation.  The pair  0016 0016 represents a 0, and  0016 0043 represents a 1.  Of course some additional information is included in the string.

If it were me, I'd probably try use a simple NEC or Sony 15 protocol.  Probably the Kuro remote will send some of those also.

[...]



Wow, way more information than i hoped for, thanks!


Yes, you understood my intent perfectly.

I'll go look up the Pronto code format and see if i can find out if the remote sends any of the NEC and/or Sony formats as well (or if i can program it to, there was some option of having it send codes for other manufacturers devices as well).

Thanks again, all of a sudden i don't just have a direction but some stops along the way as well :)

/Shadowsoul