IR Decode software (Sony and RC5) available for download

[Dale Herman]

We have posted some sample software that implements an interrupt driven method to decode both the Sony and RC5 (Philips) IR codecs. The routines use the EXT interrupt line which is tied to an IR demodulator (ex. TSOP4840). The software also uses Timer3 on PIC18FXX2 for timing and timeout checking. The software detects which codec by looking at the start bit timing. The routines are implemented as state machines that are called via the two interrupt handlers. The received messages are placed in a circular buffer to be processed by a main routine. Examples of how to handle continuous messages are also demonstrated.

Caveat: This code has not been tested with a remote that outputs the extended RC5 format.

Best Regards,

Dale
___________________________
This message was ported from CCS's old forum
Original Post ID: 12769

[guest]

I appreciate this posting was made a long while back but would anyone know the location of this software?

Thanks

[PCM programmer]

This might be it. I'm not totally sure:
http://www.ccsinfo.com/forum/viewtopic.php?t=4215&highlight=rc5+sony

But by using http://www.google.com I found several other
pages with useful source code.

Sony code for CCS:
http://web.media.mit.edu/~ayb/irx/sony/sony.c
Main web page for the link above:
http://web.media.mit.edu/~ayb/irx/

Some other CCS code:
http://chanhak.com.ne.kr/rc5.htm

Sony code for the CC5x compiler:
http://www.piclist.com/techref/ubicom/lib/io/osi2/ir/ir2ser.c

Other possibly useful code:
http://web.media.mit.edu/~ayb/irx/irda/irda.c
http://web.media.mit.edu/~stefanm/yano/picc_cheeks.html

How to find code for CCS:

Using Google, search for "use delay" and other keywords, one at a time.
Example of four different search strings :

"use delay" char Sony
"use delay" char RC5
"use delay" char "RC-5"
"use delay" char infrared

Most CCS programs will have "use delay" in them. You must use
the quotes to make it be a phrase. Also put in "char" to help you
find actual source code. Then put your specific keyword at the end
of the string. Try variations of your keywords. If a keyword has
a dash in it, then quote the keyword to keep it as a phrase.