It should work, but it might be safer to use the other available I2C bus
where no other devices are present. I have no idea how the EEPROM is
used during normal operation.

You can also play around with the i2ctools to get started.

Stefano Schmidt writes:

> So it's possible for example to use "hal_gpio_mcp23017.py" without issue? ( 
> https://github.com/machinekit/machinekit/blob/master/src/hal/user_comps/hal_gpio_mcp23017.py
>  ) 
>
> Il giorno giovedì 22 febbraio 2018 20:25:09 UTC+1, Robert Nelson ha scritto:
>
>  On Thu, Feb 22, 2018 at 1:00 PM, Stefano Schmidt 
>  <stefano.sc...@gmail.com> wrote: 
>  > I'd like to know if it's possible to use the I2C2 ( P9.19 & P9.20 ) 
> sharing 
>  > the bus with the configuration EEPROM and other devices (e.g. a GPIO 
>  > expander)? 
>
>  Yes any 3.3v i2c device can be directly plugged in.. 
>
>  in later kernel/images's, those pins are even available to you to mux 
>  to gpio/can/etc.. thru config-pin.. 
>
>  Regards, 
>
>  -- 
>  Robert Nelson 
>  https://rcn-ee.com/ 


-- 
Alexander Rössler

-- 
website: http://www.machinekit.io blog: http://blog.machinekit.io github: 
https://github.com/machinekit
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