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RC5 Philips protocol Generation and Reception

AmitK

May 12, 2010
2
Joined
May 12, 2010
Messages
2
Hey Pals,
My aim is to control TV (RC5 compatible) using microcontroller 89C61X2....
I tried...

1. Generating Code using Controller and carrier of 36 KHz using IC 555. I could generate the theoretical waveform but TV is not responding.

2. when I saw remote Control waveforms on DSO.. i couldnt see the carrier.. why ? how could it be possible.

3. I studied the IC PCA8521.. but couldnt really understand.. how command and device selection is done..

Is there any other way I can do it.... any IC or ckt.... PLZ help me GUYS....
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LTX71CM

May 23, 2010
182
Joined
May 23, 2010
Messages
182
With an onboard timer of your uC generate the carrier signal and gate it with the control code for your make/model of TV.

AmitK said:
when I saw remote Control waveforms on DSO.. i couldnt see the carrier.. why ? how could it be possible.

When I scoped an RC5 signal I had to use one timebase to see the RC5 data and a smaller one to see the carrier, try that.

A schematic and/or source code would help to give you a more specific answer.
 
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