Has anyone done any code to make an 18F CAN chip or MCP2515 CANbus chip
search for the baudrate?

The Microchip documentation seems to say one could search for the baudrate
in listen only mode, but it seems to suggest that the way to do it is set a
baud rate, and listen for a message, if there is an error adjust the
baudrate, but no pointers on how to short circuit the process beyond
stepping the baudrate generator by one and try again. It seems to me that
there should be a more direct method once one has a message or two to
analyse, to sort out they likely baudrate, but I don't really know enough
about CAN to spot it. At the extreme I can get at the bus with a scope as a
starter, but it would be nice to just "plug in and find" as it seems
potentially easier.

Have an application coming up where I would like to reverse engineer the
data protocol, but don't know the baudrate, but want to have a chip listen
in and report the messages to somewhere I can get at them.

TIA

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist