They discuss Canbus on
EVTV Motor Verks - Electric Car Conversion Videos.
They appear to have addressed this in this episode:
http://media3.ev-tv.me/news101014-iPhone.mp4
Quote:
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Originally Posted by jack Rickard
Collin Kidder in MIchigan continues to head GEVCU software development and is working on a CAN analysis tool that should make reverse engineering CAN driven devices much easier in the future. Few know or adequately appreciate the key work he did earlier developing the definitive CAN library for Arduino that allows us to do any of this at all.
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All I know is what I picked up there. I've been following it because I want to add Canbus to my 1958 Beetle.
It appears Canbus is a read-only channel. Devices assert an address and a data packet. Other devices listen for the address and ignore anything else.