After looking a little further into the IR-intercept apporach, I think I have it figured out (many thanks Tony and Frank). I loaded up the dev image and ir code intercept stuff, as well as the ir sniffer. I captured all the codes of the Pioneer remote (bear in mind that the DEX-P1R remote is not the same as the steering wheel remote) and remapped them. The Pioneer has a 4-way button arrangement for seeking CD tracks, stations, etc. I am using those four to emulate the 4 buttons on the front of the empeg. I un-mapped the volume so only the Pioneer responds, mapped the "RT" button to the "Info" button, mapped the "D" button to "Visual" button, and the "ESC" button to "Pause/Play". This arrangement works very, very well. All of these buttons perform no function when the Pioneer is in AUX mode, so there are no conflicts.

The only thing left is to use the AsenB signal from the IP-bus to control the ignition power to the empeg. I can steal this from inside the Pioneer aux input box (~8.5V when active). This will kill the empeg when I'm not in AUX input mode, and prevent conflicts when playing CD's or radio. The only question I have left is what is the current draw on the empegs switched Ignition input, and what is it's threshold voltage? I'm guessing that the 8.5V is probably sufficent and that it draws very little current, but I don't want to blow up the AUX adapter...


Phil
Blue #010101261