Re: [avrdude-dev] avrftdi TPI support

[Joerg Wunsch]

As Hannes Weisbach wrote:

> > I think a resistor between MOSI and TPIDATA is enough; MISO is an input
> > only anyway, so it cannot drive any output against the TPIDATA output.

> Theoretically yes. But this is freely configurable over MPSSE. So
> the question is, in which state the FTDI is, before avrftdi can
> configure it. The FT4232H data sheet states, that upon reset the
> device is in UART mode, which makes the MISO pin RTS and thus an
> output (I don't know on which level it would be driving).

OK, reason enough for the second resistor.
-- 
cheers, Joerg               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/
Never trust an operating system you don't have sources for. ;-)