LUFA may also be of interest: http://www.fourwalledcubicle.com/LUFA.php --- Ron K. Jeffries 805-567-4670
On Wed, Sep 14, 2011 at 04:47, Werner Almesberger <[email protected]>wrote: > Uwe Dippel wrote: > > Therefore, the topic 'host' on USB is and remains a hot one. > > By the way, if someone wants to experiment, here's an idea: > > At least one purely software implementation of USB device > functionality exists, in the form of V-USB for AVRs: > http://www.obdev.at/avrusb/ > > You could take the same approach and try to apply it to the Ben > for the host side. Host should even be easier than device because > all activities on the USB bus are initiated by the host, which > leads to a very narrow time window in which the host would have > to wait/poll for data. > > On the electrical side, much of what you need could be > accomplished with UBB. You'd still need to supply 5 V (for > development, an external supply would do. Later, you could add > a step-up converter to supply, say, 5 V at 100 mA from the Ben). > > You'd also need a few logic gates to sort out the pull-up/down > resistor situation for detecting Low- and Full-Speed, but that > can probably wait, too. > > - Werner > > _______________________________________________ > Qi Hardware Discussion List > Mail to list (members only): [email protected] > Subscribe or Unsubscribe: > http://lists.en.qi-hardware.com/mailman/listinfo/discussion >
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