usbd_feature()

Control a feature for a USB device

Synopsis:

#include <sys/usbdi.h>

int usbd_feature( struct usbd_device *device,
                  int set,
                  _uint16 feature, 
                  _uint16 rtype,
                  _uint16 index );

Arguments:

device

An opaque handle used to identify the USB device.

set

Set or clear a feature on the USB device.

feature

A specific feature on the device.

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).

index

This varies, depending on the request. It's used for passing a parameter to the device.

Library:

libusbdi

Description:

The usbd_feature() function lets you control a specific feature on a USB device.

Returns:

EOK

Success.

ENOMEM

No memory for URB.

ENODEV

Device was removed.

EIO

I/O error on USB device.

Classification:

QNX Neutrino, QNX 4

See also:

usbd_descriptor(), usbd_io(), usbd_setup_bulk(), usbd_setup_control(), usbd_setup_interrupt(), usbd_setup_isochronous(), usbd_setup_vendor(), usbd_status()