I am interested in trying to connect a CAN-enabled PIC processor to an
automotive OBD-2 diagnostic port.   Depending on the
make/model/manufacturer, there are one and two-wire CAN busses, as well as
different bit comm rates.  I am aware of the SAE and ISO communication
protocols for CAN communiction via OBD-2.

Does anyone know of any on-line or printed references (e.g. books,
articles), example circuits, demo code for this purpose, especially using a
CAN-based PIC processor?

I am also aware that you can buy relatively low-cost CAN-to-OBD-2 diagnostic
tools.  I want to be able to roll my own...not buy something off the shelf.

Thanks in advance for any pointers!

Gary

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