[Ovmsdev] Tips needed for reverse engineering CAN bus

Matt Beard matt at beard.tv
Mon Feb 25 21:34:32 HKT 2013

I am considering doing some work on an OVMS version for the
iMiev/iOn/C-Zero, but am puzzled as to how the existing versions
reverse engineered the CAN bus.

I have lots of info about reading the status from the CAN bus, and I
think this would allow all available features, but I wouldn't know
where to start on the write-side. How have the current versions
reverse engineered the commands required for setting features? Without
an ability to set features there is little gained over the existing
support and so little point doing the work.

Matt Beard

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