Re: [avrdude-dev] ppi speed-tuning ;-)

[Theodore A. Roth]

On Wed, 19 Nov 2003, Theodore A. Roth wrote:

>
>
> On Wed, 19 Nov 2003, Jan-Hinnerk Reichert wrote:
>
> > Hi all,
> >
> > as promised here is a patch that should speed up the SPI
> > communication. The idea is quite simple:
> >
> > The gets in ppi_set(), ppi_clr(), ppi_toggle() and ppi_setall() are
> > substituted by reads from shadow variables.
> >
> > I know that the "enum" does belong in the header-file, but I thought
> > it is better to leave it there, until someone has tested the patch.
> >
> > I still haven't got a parallel programming cable, so I can't test it
> > myself.
>
> I'll test this out when I get home from work tonight.

Sorry, re-reading your message, I realized I can test this on the
mega128 boards I have in front of me. Here's the results on my Piii-450
debian box:

  Writing | ################################################## | 100% 13.81s
  avrdude: 32052 bytes of f written
  avrdude done.  Thank you.

  real    0m14.495s

Now we're getting really close to the stk500 and the jtagice box. I'll
try it again on the athlon at home tonight.

Ted Roth