I agree. I have been trying the 'simple' way using the MSSP, and still have
had relatively low success. I can still manage to get a successful ACK, but
for some reason, when I read from my Slave, it keeps reading the slave's
address into SSPBUF? Odd. I will keep rying tho.

Quoting "dr. Imre Bartfai" <root@PROF.PMMF.HU>:

> 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.
> > >
> >
> >
> >
> >
> > ----------------------------------------
> > This mail sent through www.mywaterloo.ca
> >
> > --
> > http://www.piclist.com hint: The PICList is archived three different
> > ways.  See http://www.piclist.com/#archives for details.
> >
>
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