Hi,

I just working on such a project. It'll be finished very soon. BTW it is
not so simple as it seems to be...

Regards,
Imre


> Quoting "Alan B. Pearce" <A.B.Pearce@RL.AC.UK>:
>
> > >And I shouldn't be communicating using bsf/bcf on
> > >the ports.. instead use the TRIS bits? This seems odd.
> >
> > What is even more odd is why you seem to be using a software bit bang of the
> > I2C instead of using the internal MSSP I2C hardware. Your subject line says
> > you are using an 877 which has this and it is real easy to use.
>
> When searching for information on the 877, it seemed that I could only find
> software implementations of the I2C routines when the PIC would be acting as a
> master. For slave I found plenty of implementations using the built in
> hardware, but I could not find anything using hardware as a master. Could you
> perhaps point me in some direction? (I was using AN554 on Microchip's website
> is my main reference). Then I won't have to go through the uneccessary hell of
> coding this by hand - and re-coding it with TRIS registers now (since I have
> been doing that much wrong so far).
>
> >
> > And yes, you should be using pull up resistors on both the clock and data
> > line as your PIC should have both lines as "open collector" types. This is
> > done automatically by the MSSP hardware, but is why you need to use the TRIS
> > registers to set the bits to a 0 state when doing a bit bang implementation.
> >
> > --
> > http://www.piclist.com hint: The PICList is archived three different
> > ways.  See http://www.piclist.com/#archives for details.
> >
>
>
>
>
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