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Please Help!! Single Board Computer and USB

Discussion in 'Embedded' started by Junior Sanders, Sep 21, 2004.

  1. I know this is probably an easy question for some of you, but here's
    what I am trying to do:

    Use a single board computer (ie Zworld's Rabbit Processor) to read a
    USB device such as Memory Stick or Digital Camera. The Rabbit board
    has serial ports, but not USB port. Have any of you done anything like

    Thanks in Advance,

    Junior Sanders, Sep 21, 2004
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  2. I know this is probably an easy question for some of you, but here's

    It's not an easy question. Host-side USB is very difficult to implement.
    Yes it can be done. Trying to do it - especially inside Rabbit's
    baroque, nonstandard environment - is very painful. I would abandon the
    idea of USB and interface directly to a media type, e.g. CompactFlash.
    Lewin A.R.W. Edwards, Sep 22, 2004
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  3. The problem is that I have to be able to read data from a digital
    camera. All of the lower end Digital Cameras only have a USB
    interface. Any suggestions?
    Junior Sanders, Sep 22, 2004
  4. So don't use those cameras, then. Actually I don't think there are
    all that many cameras around that have a USB port but no removable
    storage media. Well, setting aside dedicated webcams, that is.
    Hans-Bernhard Broeker, Sep 22, 2004
  5. The problem is that I have to be able to read data from a digital
    If you are talking about cameras with non-removable media (webcams,
    pencams) then I've got one word for you: Fuggedaboutit. You would need
    to write drivers for every single camera chipset out there. You would
    need to keep updating VID/PID tables, at least, practically on a daily
    basis to keep up with new product releases. The ONLY way you can
    contemplate supporting those sorts of cameras is via a mainstream OS
    where someone else is doing the driver work for you.

    If you are talking about cameras with removable media - Support the
    media directly. It's much less trouble!
    Lewin A.R.W. Edwards, Sep 22, 2004
  6. The easiest to do this is to get a module / device that does most of
    the stuff for you. Atmel has a number of USB host devices which looks
    fairly easy to hook up to an embedded micro. AFACR they already
    support the profiles needed for accesing a USB flash disk or similar

    Anton Erasmus
    Anton Erasmus, Sep 22, 2004
  7. AT43USB380
    Ulf Samuelsson, Sep 23, 2004
  8. Junior Sanders

    Scott Murphy Guest

    Have a look at www.ftdichip.com. Maybe their widget can solve your problem.
    Scott Murphy, Sep 24, 2004
  9. Junior Sanders

    Guy Macon Guest

    Has anyone priced these? I usually buy QTY=1,000 for a prototype and
    then satrt putting in regular QTY=100,000 to QTY=1,000,000orders once
    production starts, so those are the prive points I am interested in.
    Guy Macon, Sep 24, 2004
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