On 19 October 2017 at 23:58, Chris Albertson <albertson.ch...@gmail.com> wrote:

> OK you might argue that USB3 can be faster then Ethernet.   Faster bit
> rates but who cares, for this use case latency matters more then any other
> spec.

Indeed, the EPP parallel port works splendidly for the Pico and (some)
Mesa cards.
The total payload every mS is a few dozen bytes.

Though: There is some evidence that there was a realtime USB effort, I
found the source code on the RTAI repository (but can't immediately
find it now).


-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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