The Kenwood protocol part 2

How to get SAAB 95 steering remote to work with the Kenwood protocol

continues

Project completed

Seems i forgot the 38kHz carrier wave:

for(int i=0;i<=22;i++) //500us on

{

SETBIT(PORTB, 3);

_delay_us(13);

CLEARBIT(PORTB, 3);

_delay_us(13);

}

i.e. 26us period

Proof of concept

My old HP 54600A is nice but i cant record waveforms on it.

So i need to construct one that "can" -extremely budget one.

I'm connecting it to the audio card that has a sample rate of 96kHz

Pulsed code looks fine, read via IR photodiode -output is inverted

the 38kHz carrier is barely visible

Commandwise there is no "NXT"

I'll set that as play/pause instead

NXT -> play pause => 13112214311541111

Seek button now include next track and if one keeps button pressed it seeks or scans

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