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Also, don't forget that many of these strings are available
in the IORegistry as a property of the IOUSBObject. The ones you asked about in
particular.
-chris
And of course, you can look at the IOUSBFamily in Darwin to see how
we do it. IOUSBDevice.cpp has the GetStringDescriptor(). It does a
lot of error checking and deals with the correct endianness and stuff...
--
Fernando Urbina
USB Technology Team
Apple Computer, Inc.
On Apr 19, 2005, at 2:58 PM, David Ferguson wrote:
To get a string, you use the standard device requests (GET_DESCRIPTOR)
described in the USB spec, chapter 9. Your code to do that might
look something like (not tested, top of my head, be on the lookout for
possiblebyte-swapping issues in the wValue/wIndex fields):
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