Jan,

> Different tasks to the same i2c interface from user space
> is not possible in a multitasker.

Ofcourse it is.   The only question is: how.

Though chances are the serializer for it is already present in the OS, and
we do not need to do anything special.

> But you can make your own i2c interfaces on _any_ pins with some diodes

Did you know that, as long as you can switch a pin from in to output, you do
not even need diodes for that ?

Just write a Zero to the pin and switch it from input to output and back.
That way you mimic a open-collector pull-down pin. :-)

Regards,
Rudy Wieser

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