problems running I2C and/or SPI on 857 board

Wolfgang Denk wd at
Tue Mar 26 00:11:02 EST 2002

In message <FCEAKDJJAPHPLJFINDAJCEMMCDAA.Stephan.Linke at> you wrote:
> I'm trying to get I2C and/or SPI running on a 857 board. Register settings
> and BDs look good. But when the start command is issued nearly nothing
> happens as if there would be no clock.

I guess your implementation is basedon existing code? Which one?
[Hint: we have I2C running on a couple of systems...]

> Is there anyone who has an idea?

Start from some code that is known to work?

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at
The existence of god implies a violation of causality.

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