December 2011
Intermediate to advanced
485 pages
15h 47m
English
Content preview from OS X and iOS Kernel ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The IOUSBInterfaceInterface Class
The IOUSBInterfaceInterface class is a user-space class that provides equivalent functionality to the IOUSBInterface class used by kernel drivers. An application can obtain a reference to an IOUSBInterfaceInterface class by iterating over the device's interfaces, as shown in Listing 15-5, or an application can obtain an IOUSBInterfaceInterface object directly by creating a matching dictionary that specifies the service name kIOUSBInterfaceClassName.
A USB interface contains one or more endpoints, which allow data to either be written to the device or data to be read from the device. A user-space USB driver is not limited in any way regarding the type of endpoints it is able to use; all endpoint types, including ...
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