[MinnowBoard] Problem to exchange data on I2C

John Hawley john.hawley at intel.com
Mon Oct 6 20:28:20 UTC 2014


Keep in mind that Linux enumerates the busses in a different order than
the hardware does.  If you are using the low speed header's I2C that's
likely I2C #6 under Linux.

https://github.com/MinnowBoard/minnow-max-extras/blob/master/calamari/calamari-i2c-eeprom.sh


Has an example to check what addresses are used on the bus (line 28).
That will likely help significantly.

- John

On 10/06/2014 08:40 AM, Soussi, El-Houari wrote:
> Hi everybody,
> 
> I installed the version 14.04 of Ubuntu, updated  the kernel to 3.14.19,
> I checked the I2C is well activated in the BIOS and  I installed the
> module i2c-dev but I cannot still see any exchange through I2C #5.
> 
> I read in a discussion thread that board files are needed to have SPI &
> I2C devices work. Is it true? Where can I find these files? Otherwise,
> does somebody have an  idea?
> 
> Thank you,
> 
> El-Houari
> 
>  
> 
> 
> 
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