Re: CANBus Baud Rates

Bryan Armstrong <bryan.armstrong-6tN4nzCoH/[email protected]>
Newsgroups gmane.comp.hardware.microcontrollers.tini
Message-ID <[email protected]>
Vic wrote:
> I would like to find out if anyone had managed to get
> the TINI400's CAN interface to a high baud rate like
> 750k or 1Mbps? 
> 
> The API docs show some BRP,TSEG1/2 values for old
> TINI390 and its respective baud rate, is there a
> similar list or a baud rate calculator for Tini400?

You will have to change the crystal to get 1Mbit/s with less than 0.5% 
error as required by Bosch.  14MHz will work.

The bit rate calculation is pretty much the same for any CAN controller. 
  Define your tqu, TSEG1 and TSEG2 and you are done.  I have not used 
any baud rate calculation software, but you may be able to find one on 
the Internet.  For my use, I just iterated through all the combinations 
of bit parameters and picked the bit rate and sample position I wanted.

-Bryan

-- 
--
Bryan Armstrong
bryan.armstrong-6tN4nzCoH/[email protected]


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