usb bulk 传输例程。 * The bulkusb driver is a generic function driver, based on the Windows Driver Model (WDM). * Supports Plug and Play(PnP), Power Management(PM), Windows Management Instrumentation (WMI) and the Selective Suspend (SS) features.

A primary design goal for Windows Driver Foundation (WDF) was to make the driver models easy to extend to support new types of hardware. The first specialized input/output (I/O) targets in both User-Mode Driver Framework (UMDF) and Kernel-Mode Driver

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