"I2C" versus "IIC"

Robert P. J. Day rpjday at mindspring.com
Thu Oct 14 05:40:55 EST 2004

On Wed, 13 Oct 2004, Eugene Surovegin wrote:

> On Wed, Oct 13, 2004 at 02:26:23PM -0400, Robert P. J. Day wrote:
> >
> >   i was just about to rename some of my variables and macros to be
> > consistent with what i *thought* was the standard nomenclature of
> > "IIC" as opposed to "I2C".  just checked include/asm-ppc, and grepped
> > for case-insensitive instances of both strings ... oh, god.  there's
> > really no preferred usage, is there?
> Philips' documentation uses I2C, not IIC, so I guess this is
> _official_ name of the _bus_.
> Some vendors (like IBM in their 4xx parts) use IIC to name I2C
> _interface_ to distinguish it from I2C _bus_ (they specifically
> mention this in the chip manual).
> For example, in the corresponding 4xx driver I used "iic" because it
> was written for IBM IIC _interface_.

i'm starting to regret having brought this up. :-)  initially, i
thought it was going to involve only my deciding what i wanted to name
my own variables, to be consistent with common usage.  now i see that
it's nowhere near that straightforward.

i'm going to leave this to wiser heads to mull over.


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