IR Code Analyser: PIC version?

[nigelmercier]

In 2001 Elektor published a universal IR Code Analyser, based on a pre-programmed 87LPC764; it looks ideal, apart from this!

It displays the protocol, address, command, complete code, and type of code.

Has anyone made a PIC version?

 

[hexreader]

Tried it long ago and gave it up as a bit pointless, and not very reliable.

I am curious as to how many different protocols the device would differentiate between, and what the success rate was. My suspicion is that it was probably not "universal" except in a very small universe.

Would be interested to hear more though.

My more recent mikroC attempts at non-universal domestic IR are here:

http://www.libstock.com/projects/vi...ec-sony-rc5-rc6-toshiba-ir-now-for-12f683-too

Older MPLAB asm attempts, including trying to recognise protocol, remain on my "c:" drive.

All using PICs

EDIT: Biggest problem with "universal" that I found is with IR protocols that use frequencies other than the more common 36/38/40 KHz carrier. If you restrict "universal" to these three frequencies, then life gets a little easier. Even so, the universe has probably expanded since 2001 :-D

---------- Post added at 19:18 ---------- Previous post was at 18:26 ----------

There is a muti-protocol PIC decoder here:

http://www.sbprojects.com/projects/ircontrol/picir.php

At least I think so, going from memory only. I will leave you to research what it really does.

 

[hexreader]

Found the Elector information you talk about. Seems it is not advertised as "universal", but decodes eight "industry standard" protocols.

I wonder what these 8 protocols are, but I do not want to register to find out.

I see the gadget uses a 36 KHz receiver module, which probably means the device is for reception only from remotes that use 36KHz, 38KHz and perhaps Sony 40KHz.

 

[nigelmercier]

Found the Elector information you talk about. Seems it is not advertised as "universal", but decodes eight "industry standard" protocols...

Yes, the "universal" was my doing, but 8 protocols isn't bad. I've seen a few with multiple sensors with diode OR gates, but I didn't want to re-invent a PIC version if I could avoid it.

 

[hexreader]

Which eight protocols does it handle please? Don't need to know, but I am curious. Domestic IR is my favourite electronic subject.

Plus I might have ideas on how to tell one from another if I knew what the aim was.

EDIT: and multiple sensors are not needed, if all you want is the more common 36KHz (RC5, RC6), 38KHz (NEC), and 40KHz(Sony) . A 38KHz receiver will work with 36KHz and 40KHz, but at maybe half the range. I am curious that Elektor chose a 36KHz receiver. I would have gone for 38KHz.

 

[bimbla]

Which eight protocols does it handle please? Don't need to know, but I am curious. Domestic IR is my favourite electronic subject.

Plus I might have ideas on how to tell one from another if I knew what the aim was.

EDIT: and multiple sensors are not needed, if all you want is the more common 36KHz (RC5, RC6), 38KHz (NEC), and 40KHz(Sony) . A 38KHz receiver will work with 36KHz and 40KHz, but at maybe half the range. I am curious that Elektor chose a 36KHz receiver. I would have gone for 38KHz.

Hello hexreader,

Thank you for your codes on IR so far, posted on mikroE.
Do you think you have time to make a universal IR receiver? That would be cool and could replace all existing versions. It could be based on the TSMP58000 IC from Vishay.

Thanks in advance!!

bimbla.

 

[walt]

I had to examine unknown remote and used PC based IR protocol analyzer http://www.ostan.cz/IR_protocol_analyzer/. It is possible to complete everything in 1 hour.

 

[bimbla]

Thank-you Walt!

I am designing a generic audio interface. Three LEARN buttons will LEARN (Vol-up, Vol-dn, Mute) IR codes from remotes and store it against the respective functions. In the play mode, The remote will be able to control the volume and mute.
I will be using 18F67K22. TSMP7700 is on RB0 (Int. on change). LRN_Vol+, LRN_Vol- and LRN_Mute are assigned RB1-3. Besides, I have a incremental rotary encoder CH_A on RB6 and CH_B on RB7, multiplexed with PGD and PGC through a jumper arrangement.

Do any one of you have any suggestions?