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From: sjw <simon.j.wright@mac.com>
Newsgroups: comp.lang.ada
Subject: Re: Hard and soft real time with Ada
Date: Mon, 17 May 2010 03:29:02 -0700 (PDT)
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Date: 2010-05-17T03:29:02-07:00
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On May 17, 9:30=A0am, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
wrote:

> Hmm, I doubt USB can be considered real-time. But I see no obvious reason
> why a computer vision application could not tolerate some jitter (say
> 100=B5s). I guess you just do not need "very hard" real-time.

Clearly you wouldn't want to plug just any random USB device into a
system which expected known, bounded response times. Not that anyone
is going to be plugging any random USB device into a drone, especially
in flight ...

But is there anything about USB which makes the latencies etc for a
particular set of devices unbounded? If not, why shouldn't USB be used
in an appropriate application?