Belkin F8E211 Guia do Utilizador descarregar pdf (Página 29)

This chapter includes descriptions of the USB functions in alphabetical order, along

with a listing of the functions arranged by category.

These functions are deﬁned in the libusbdi library. Use the -l usbdi option to

link against this library.

Functions arranged by category

The USB functions may be grouped into these categories:

• Connection functions

• Memory-management functions

• I/O functions

• Pipe-management functions

• Conﬁguration/interface functions

• Miscellaneous functions

Connection functions

usbd

connect() Connect a client driver to the USB stack.

usbd

disconnect() Disconnect a client driver from the USB stack.

usbd

attach() Attach to a USB device.

usbd

detach() Detach from a USB device.

Memory-management functions

usbd

alloc() Allocate memory area to use for data transfers.

usbd

free() Free memory allocated by usbd

alloc().

usbd

mphys() Get the physical address of memory allocated by usbd

alloc().

usbd

alloc

urb() Allocate a USB Request Block for subsequent URB-based

operations.

usbd

free

urb() Free the URB allocated by usbd

alloc

urb().

I/O functions

usbd

setup

bulk() Set up a URB for a bulk data transfer.

usbd

setup

interrupt()

Set up a URB for an interrupt transfer.

September 10, 2007 Chapter 4 • USB Library Reference 15

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