[i2c] USB to I2C interface

[Till Harbaum (Lists)]

Hi,

i am currently building a very simple USB to I2C interface since i just 
don't like those parallel interfaces anymore. They are slow, buggy, generate
too much host cpu load and don't even supply power to your target ...

Thus i decided to build something similar to my lcd2usb 
(http://www.harbaum.org/till/lcd2usb) which should result in a device
smaller and easer to to build than most of the printer port interfaces
and at a cost of about $5 if you build it on a bread board.

Now the question: Do i have to use some "algorithm" driver? I basically
want to forward every request to a tiny microcontroller so i don't need any
special algorithm. Do i have to implement some i2c-algo-simple or 
i2c-algo-direct or however i'll name it or can i make my i2c-usb driver
to directly interface between the usb core and the usb interface.

Another question will be of course if the resulting driver should be usb-i2c 
and part of the usb stack or i2c-usb and be part of the i2c stack. I'd prefer
the latter as most i2c users will understand what a usb interface is but 
not all usb users will understand the idea of an i2c interface.

Can you give me a hint what to do about the i2c-algo driver?

Regards,
  Till

-- 
Dr.Ing. Till Harbaum <till at harbaum.org>
http://www.harbaum.org/till