The PC parallel port limitation will probably be the max performance of the
SPI interface to the MCP2510, whatever that is.

Bob Ammerman
RAm Systems
(high performance, high function, low-level software)

----- Original Message -----
From: Mike Harrison <mike@WHITEWING.CO.UK>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Tuesday, June 20, 2000 11:35 AM
Subject: Re: [OT] : RS232<-->CAN 2.0b


On Wed, 21 Jun 2000 10:55:04 +1000, you wrote:

>Thanks Mike,
>
>What is the practical max. speed via PC's parallel port readings?
Ought to cope with full-speed CAN I would think.
>
>=========
>
>As CAN frames are of very limited length, RS232 port speed is only an
>issue if you need maximum throughput - you can buffer data  in the
>converter to cope with the difference in speeds. As the converter will
>be handling a lot of the CAN header, crc  fields etc., the data rate
>to the PC will be significantly less than the raw CAN rate.
>It would be pretty simple to set up a PIC with their CAN chip to do
>what you want.  MCTs CAN eval board would give you a good start.
>
>In fact their MCP2510 eval kit comes with software that bit-twiddles
>an MCP2510 directly on the PC parallel port, so you may be able to use
>this pretty much 'as-is'.
>
>
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