
usbd
_
select
_
interface() © 2007, QNX Software Systems GmbH & Co. KG.
Select the interface for a USB device
Synopsis:
#include <sys/usbdi.h>
int usbd_select_interface( struct usbd_device *device,
_uint8 ifc,
_uint8 alt );
Arguments:
device An opaque handle used to identify the USB device.
ifc Interface identifier (
bInterfaceNumber).
alt Alternate identifier (
bAlternateSetting).
Library:
libusbdi
Description:
You use the usbd
_
select
_
interface() function to select the interface for a USB device.
Returns:
EOK Success.
ENOMEM No memory for URB.
ENODEV Device was removed.
Classification:
QNX Neutrino, QNX 4
Safety
Cancellation point Yes
Interrupt handler No
Signal handler No
Thread Yes
68 Chapter 4 • USB Library Reference September 10, 2007
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