Chris Carr wrote:
>
> Brandon Fosdick wrote :
> > Physically the setup involves two proto boards each with a 16F877,
> > MCP2510 and UC5350. One of them also has a MAX232 hooked to the USART
> > for displaying debugging text. The two boards are seperated by about 6
> > inches of wire that makes up the CAN bus. I connected CANH to CANH and
> > CANL to CANL with a 150 Ohm resistor across the wires.
>
> Passive Termination of the bus should be done with a 120 ohm resistor at
> each end of the cable. (you will note the tests on the Datasheet are done
> with a 60 ohm resistor). I doubt that this is actually your cause of your
> problem but there is always a remote chance that it could be.

I'll try using another resistor. I planned to do that in the final
version, but figured since the prototypes are only 6" apart that I could
get away without it for now. At this point I'll try just about anything.

> I didn't know that TI did CAN Transceivers, it looks like a browse of their
> site is overdue.

http://focus.ti.com/docs/browse/productnavigation.jhtml?familyId=540&tfsection=products&templateId=5

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