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How to get Root Hub usbDeviceRef. (MacOSX)



Hello All,

I want to get Root Hub usbDeviceRef on MacOSX that is demanded
as product specification. I do Root Hub usbDeviceRef on the basis of
"/Developer/Examples/IOKit/usb/USBSimple Example"
and want to acquire it.

In this case what kind of value should I set in -:
IOServiceMatching: class name
CFNumberCreate: CFNumberType / value
CFDictionaryAddValue: key

Anyone help me.

Best regards,
--
Tsutomu Sasaki
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