Subject:
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Re: mindstorms NXT
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 8 Jan 2006 22:10:24 GMT
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Viewed:
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7728 times
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In lugnet.robotics, Kevin L. Clague wrote:
>
> I was wondering if one could make a two port host device with its own power
> source (battries). It could be relatively simple, where one host port polls the
> device port of the NXT to find out if there is anything to do, and then the
> second host port would drive that to devices that the NXT can use.
>
> Just daydreaming here too.
So you are saying you have a sort of mini-host acting as a bridge between
connected devices like a NXT and something else.
That sounds like an interesting idea .....
I think one of the reasons why hosts are tricky and devices are easier is that
USB is pretty much a standard from the device's view of it whereas from the host
end, there are numerous different devices which could show up and each requires
its own driver. So the little host bridge idea is probably very doable from a
hardware standpoint, but the amount of software it would need would be quite
large, typically consisting of a whole array of drivers for all the different
kinds of things that might get plugged in.
So for example, with the NXT plugged into bridge port A, anything from a USB
storage device to a data acquisition device even another NXT could be plugged
into port B. Somewhere, some really clever softare has to reside to be able to
negotiate between what's on port A and port B. I was wondering if this might be
the kind of thing that Windows CE might be able to be programmed to do. I assume
it has a whole raft of USB drivers, the same way XP/2000 has. Is there such a
thing as a Windows CE type platform that has USB? An external USB splitter and
some code sitting on top of the O/S USB drivers might make the kind of compact
device you are describing?
What do you think?
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Message has 2 Replies:
 | | Re: mindstorms NXT
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| John Barnes wrote: I was wondering if this might be (...) I think I have one : ) It's an HP Jornada 820. Runs CE from ROM, but people are busily hacking at getting Linux to run on it. It's a nice little machine and I suspect the perfect device to (...) (19 years ago, 8-Jan-06, to lugnet.robotics)
| | | Re: mindstorms NXT
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| (...) Yes, this was what I was brainstorming of... (...) Yes, this is very true. If you always used A for the NXT then you'd still need device drivers for whatever is plugged into B. (...) Yes, as long as the WindowsCE has host capabilities. My (...) (19 years ago, 9-Jan-06, to lugnet.robotics)
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Message is in Reply To:
| | Re: mindstorms NXT
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| (...) I was wondering if one could make a two port host device with its own power source (battries). It could be relatively simple, where one host port polls the device port of the NXT to find out if there is anything to do, and then the second host (...) (19 years ago, 8-Jan-06, to lugnet.robotics)
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