Subject:
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Re: USB Host and Slave
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 9 Jan 2006 19:33:01 GMT
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Original-From:
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dan miller <danbmil99@yahoo.com+AvoidSpam+>
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Viewed:
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1407 times
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look up "USB on the go", it's basically what you describe -- a minimal host
for peripheral-to-periperal connections.
--- PeterBalch <PeterBalch@compuserve.com> wrote:
> > > > You can buy Flash memory USB 'thumb drives' for $8.50 in quantity
> > > > with anywhere from 128Mbytes upwards.
> > >
> > > How hard is it to interface a thumb drive with a device like the • ARM?
> >
> > It would be pretty tough.
> >
> > > From other discussion here the difference between slave and master • USB devices seems
> > > to be important.
> >
> > Yes. It's crucial.
>
> There's been a lot of discussion of how hard it is to make a USB host
> compared to a Slave.
>
> But that's a general-purpose USB host (like a PC). What if it were a
> "special purpose" host.
>
> The slave probably doesn't care if it has been interrogated, negotiated
> and
> enumerated or whatever. If if the host already knew what the slave was
> (e.g. it's always a thumb drive) then writing the host would be a whole
> lot
> easier. Perhaps.
>
> Has anyone done it? (Not for a PC but for a PIC or ARM.)
>
> Useful cheap USB devices would be a thumb drive, a webcam, an optical
> mouse, etc.
>
> Peter
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Message has 1 Reply:
 | | Re: USB Host and Slave
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| (...) I don't know that it will really do what people are wanting (interface the NXT to a USB camera or USB FLASH dongle), but there *IS* a way to convert a USB device (the NXT, for instance) into a USB on-the-go (OTG) Host! Philips announced a (...) (18 years ago, 10-Jan-06, to lugnet.robotics)
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Message is in Reply To:
| | USB Host and Slave
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| (...) ARM? (...) USB devices seems (...) There's been a lot of discussion of how hard it is to make a USB host compared to a Slave. But that's a general-purpose USB host (like a PC). What if it were a "special purpose" host. The slave probably (...) (18 years ago, 9-Jan-06, to lugnet.robotics)
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