XBee USB Adapter Board & Propeller Demo Board ?

zappmanzappman Posts: 321
edited October 2010 in Accessories Vote Up0Vote Down
Can the XBee USB Adapter Board be used with the Propeller Demo Board ?

I would like to know if the USB connector on the XBee USB Adapter Board can be connected to the USB connector on the Propeller Demo Board via a USB cable ?

I am trying to avoid using additional propeller pins on the demo board.

I did not see this mentioned in the XBee Tutorial - Chapter 2 Draft "Parallax XBee Adapter Boards" .
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  • 4 Comments sorted by Date Added Votes
  • Ken GraceyKen Gracey Posts: 5,666
    edited October 2010 Vote Up0Vote Down
    Oh boy. I knew this question would surface sooner or later. Let me go find somebody who knows what they're talking about. I assume you've already read the docs and that they don't make this point very clear.

    Ken Gracey
  • Chris SavageChris Savage Parallax Engineering Posts: 13,778
    edited October 2010 Vote Up0Vote Down
    Zappman,

    The USB chips on both the demo board and the XBee USB Adapter are peripheral (slave) chips. That is, they are designed to connect to a USB Host (Master) chip on a PC. Because of this they cannot be connected together, because the slave chips are not designed to enumerate other USB devices and understand them. All USB peripherals are designed to plug into a PC or something with a Host controller, such as the Vinculum chip.

    Now, if you had a PC App written to talk to the Demo Board you could also talk to an XBee USB Adapter via a USB port on the PC and manage communication that way, but it is not very efficient and requires a custom PC application.
    Chris Savage
    Engineering Tech, Parallax Inc.
    (916) 624-8333 x3005
    Website / Twitter / Google+
  • zappmanzappman Posts: 321
    edited October 2010 Vote Up0Vote Down
    Zappman,

    .... they cannot be connected together, because the slave chips are not designed to enumerate other USB devices and understand them. ....

    Ken & Chris thanks for quickly answering my question.

    Your answer makes perfect sense to me, I just wasn't thinking of the master / slave thing.
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