[chbot] Small Micros with I2C bus

Andrew Errington a.errington at lancaster.ac.uk
Sun Apr 24 13:48:39 BST 2011

On Sun, 24 Apr 2011 21:21:00 Paul Davey wrote:
> On Sun, Apr 24, 2011 at 11:56 PM, Andrew Errington
> <a.errington at lancaster.ac.uk> wrote:
> > On Fri, 22 Apr 2011 00:08:37 Paul Davey wrote:
> >> I thought it may be a good time to experiment with I2C
> >
> > Could you bit-bang the I2C interface?  Then you wouldn't need a built-in
> > peripheral.
> >
> > Andrew
> Probably, but where's the fun in that?

The fun is inherent in the exhaustive debugging sessions of course.  :)

> also that means the micro cant 
> do others things at the same time :P

Really?  Surely you can use an interrupt to detect the START condition?  Or if 
the micro is fast enough just poll it in the main loop.

> Also I do not want to write all the code to bit bang it and I am not
> looking at the range so small that they don't have I2C/TWI
> peripherals.

That's okay.  At least you have considered it.


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