Re: [avrdude-dev] Problem with TPI and "serbb" mode

[David Mosberger]

MPSSE is limited to FT2232D, FT2232H, and FT4232H chips though, isn't it?

With the patches in 9327 <https://savannah.nongnu.org/patch/?9327> and 9328
<https://savannah.nongnu.org/patch/?9328>, it's possible to program an
ATtiny10 chip in about 2 seconds on Linux and about 5 seconds on Windows
using pretty much any FTDI chip.

  --david

On Wed, Mar 20, 2019 at 3:09 AM Hannes Weisbach <address@hidden>
wrote:

> I don’t believe I’ve ever published my TPI for FTDI MPSSE. So, if no-one
> else has implemented this(I did not follow avrdude development closely), I
> believe avrdude can't do MPSSE+TPI.
>
> --
> Best regards,
> Hannes
>
> > Am 20.03.2019 um 08:31 schrieb Joerg Wunsch <address@hidden>:
> >
> > As Wayne Holder wrote:
> >
> >> I'm trying to use AVRDUDE on macOS 0.14.2 to communicate with an
> ATTiny10
> >> that's connected an FTDI breakout board like this:
> >
> > Curious: for an FTDI, why use serbb? It's among the slowest possible
> > options. Don't you have the possibility to use FTDI's MPSSE? All it
> > requires is one of the supported chips (see the FTDI website), and
> > the presence of libftdi (which is opensource) on your system.
> >
> > Since all the bitbanging is then handled inside the FTDI chip, this
> > is going to be way faster than serbb which has to complicatedly
> > transfer full USB packets for each single bit change.
> > --
> > cheers, Joerg               .-.-.   --... ...--   -.. .  DL8DTL
> >
> > http://www.sax.de/~joerg/
> > Never trust an operating system you don't have sources for. ;-)
> >
> > _______________________________________________
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>
>
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