Belkin F8E211 Guía de usuario descargar pdf (Pagina 59)

 2006, QNX Software Systems GmbH & Co. KG. usbd device lookup()

Map the device instance identiﬁer to an opaque device handle (from usbd attach())

Synopsis:

#include <sys/usbdi.h>

struct usbd

device *usbd device lookup(

struct usbd

connection *connection,

usbd

device instance t*instance );

Description:

You use the usbd device lookup() function to map the device instance

identiﬁer to an opaque device handle from usbd

attach(). This would

typically be required in the removal callback.

Returns:

An opaque device handle or NULL.

Classiﬁcation:

QNX Neutrino, QNX 4

Safety

Cancellation point No

Interrupt handler No

Signal handler No

Thread Yes

See also:

usbd args lookup(), usbd attach(), usbd conﬁguration descriptor(),

usbd

device extra(), usbd device descriptor(),

usbd

endpoint descriptor(), usbd hcd info(), usbd hub descriptor(),

usbd

interface descriptor(), usbd languages descriptor(),

usbd

parse descriptors(), usbd string(), usbd urb status()

November 2, 2006 Chapter 4 USB Library Reference 47

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Belkin F8E211 Guía de usuario Pagina 59