usb_fill_int_urb

Langue: en

Autres versions - même langue

Version: June 2009 (debian - 07/07/09)

Section: 9 (Appels noyau Linux)

Sommaire

NAME

usb_fill_int_urb - macro to help initialize a interrupt urb

SYNOPSIS

void usb_fill_int_urb(struct urb * urb, struct usb_device * dev, unsigned int pipe, void * transfer_buffer, int buffer_length, usb_complete_t complete_fn, void * context, int interval);

ARGUMENTS

urb

pointer to the urb to initialize.

dev

pointer to the struct usb_device for this urb.

pipe

the endpoint pipe

transfer_buffer

pointer to the transfer buffer

buffer_length

length of the transfer buffer

complete_fn

pointer to the usb_complete_t function

context

what to set the urb context to.

interval

what to set the urb interval to, encoded like the endpoint descriptor's bInterval value.

DESCRIPTION

Initializes a interrupt urb with the proper information needed to submit it to a device. Note that high speed interrupt endpoints use a logarithmic encoding of the endpoint interval, and express polling intervals in microframes (eight per millisecond) rather than in frames (one per millisecond).