Re: i2c Questions

[Jean Delvare <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org>]

On Thu, 27 Mar 2008 21:14:53 +0000, badguy development wrote:
> 
> Hello,
> 
>  I am creating 2 i2c drivers.
> 
> I have started a driver for the LTC1760 
>  and that one is working and well under way.
> 
> I have to now develop a driver for bus address 0x01
>  and in the code I have located that to be an invalid address.
> 
> the code tests for address < 0x03 && address > 0x77
> then promptly fails with invalid address.
> 
> I am hoping to find an understanding for this.
> this is a programmable address, and I will have it changed if I have to.

Please read the I2C specification. Address 0x01 is for CBUS
compatibility and cannot be used by I2C devices.

> 
> Also, I have 3 i2c busses on this iMX31 SOM
> 
> how can I tell my device to only query / operate on a specific bus.
> do I need to?

The device can only operate on the one bus to which it is connected, so
I can't see any problem here.

> 
> and finally where should a noobie to this i2c stuff be asking questions like this?

This is the right list. It would be nice if you could post under your
real name.

> 
> Please forward any response to this to my email here:
> badguydevelopment-PkbjNfxxIARBDgjK7y7TUQ@public.gmane.org
> 
>  I am trying to join the list, but have not received confirmation yet.
> 
> Thanks ahead of time for your wealth of knowledge.

-- 
Jean Delvare

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