[SOLVED] IR Remote receiver interface with 8051 using c

[Rk_on_edaboard]

i want to interface tv remote control with 89s52. I have receiver is tsop1838 and the remote is china kit remote which works on 200 models of tv. i have success in detecting pulses but counting and changes with respect to numbers.
Please help me about it or if any idea or program in c code.

 

[johnnyprimavera]

Hi!

I'm not sure I have completely understood what you mean by "i have success in detecting pulses but counting and changes with respect to numbers."

But let's have this straight:

First of all, you may know that IR protocol frequency may vary from 38 to 42 KHz. The IR protocol varies slightly with every manufacturer, but tends to be like the japanese NEC protocol, where 0's are defined as 1 HIGH period and 1 low period and 1' as 1 HIGH period and 2 or 3 LOW periods.

This first Samsung document has self explanatory flowcharts that will help you programming the AT89S52. Also it explains in a very detailed manner how their own protocol works. However you'd have to find the codes of the numbers, volume, keys, etc. by yourself.

http://www.samsung.com/global/busin...F80KB_RemoteController_AN_REV000_090108-0.pdf

This one, from JVC, explains again how their protocol works and they give your all of the codes assigned to every single key. It will also provide you with great insight with the exact timings required.

http://support.jvc.com/consumer/support/documents/RemoteCodes.pdf

Then there's the Sony protocol (SIRC) which uses, again, a different encoding but its flowchart is really enlightening.
Please note this document is not directly from Sony as the others were. This one is from http://picprojects.org.uk/.

http://www.cypress.com/?docID=46755

And if you have some time, this video from Dave Jones will give and excellent approach:

http://www.eevblog.com/2013/08/12/eevblog-506-ir-remote-control-arduino-protocol-tutorial/


Hope this helps!

 

[Rk_on_edaboard]

Very valuable information given Mr.Johnnyprimavera sir.
Thank you very much for quick reply.

 

[Sijumukund]

i want rc-5 protocol code by using structures..plzz help