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usbd setup vendor()  2006, QNX Software Systems GmbH & Co. KG.

Set up a URB for a vendor-speciﬁc transfer

Synopsis:

#include <sys/usbdi.h>

int usbd

setup vendor( struct usbd urb *urb,

uint32 ﬂags, uint16 request,

uint16 rtype, uint16 value,

uint16 index, void *addr,

uint32 len );

Description:

This routine sets up a URB for a vendor-speciﬁc transfer.

For this release of the USB SDK, vendor requests are synchronous

only. Therefore, the func parameter in usbd

io() must be NULL.

☞

urb An opaque handle (from usbd alloc urb()).

ﬂags One of the following:

URB DIR IN—Specify incoming (device-to-PC)

transfer.

URB DIR OUT—Specify outgoing (PC-to-device)

transfer.

URB DIR NONE—Don’t specify direction.

URB SHORT XFER OK—Allow short transfers.

request A device-speciﬁc request.

rtype Type of request (e.g.

USB RECIPIENT DEVICE,

USB RECIPIENT INTERFACE,

USB RECIPIENT ENDPOINT, USB RECIPIENT OTHER,

USB TYPE STANDARD, USB TYPE CLASS,

USB TYPE VENDOR).

value This varies, depending on the request. It’s used for

passing a parameter to the device.

90 Chapter 4 USB Library Reference November 2, 2006

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Belkin F8E211 Guía de usuario Pagina 102