I did an implementation which talked to a power supply that claimed to use
the PMBUS protocol.  I first did some reading about PMBUS, and it appeared
to be fairly straight-forward i2c, with some added message formats.
Namely, things like a byte count being sent (well, read out),  followed by
the bytes themselves.  When I actually did the interface, I didn't have to
change my i2c code.  Registers were still just registers.  What I did have
to do was work out some of the formats they used to represent their data;
in particular, there is a 2-byte floating point format that provided some
entertainment.

On Wed, Aug 1, 2012 at 8:55 PM, Chetan Bhargava <cbhargava@gmail.com> wrote=
:

> Hello all,
>
>
> I have searched various forums and haven't come across any PMBUS
> implementations on PIC. Is any one of you aware of any PMBUS
> implementations on PIC as PMBUS master?
> My application has to interface with LT2979 power controller that
> talks on PMBUS.
>
> Any pointers would be appreciated.
>
> Thanks.
>
>
> Chetan Bhargava <http://mailman.mit.edu/mailman/listinfo/piclist>
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