Detailed Description

USB request structure specific to the platform

Data Fields
void *	buf

unsigned	length

dwc_dma_t	dma

unsigned	stream_id:16

unsigned	zero:1

void(*	complete )(volatile usb_ep_t ep, volatile struct usb_request req)

int	status

unsigned	actual

Field Documentation

void* usb_request_t::buf

Pointer to the buffer associated with the USB request.

unsigned usb_request_t::length

Length of the data in the buffer.

dwc_dma_t usb_request_t::dma

DMA address associated with the USB request.

unsigned usb_request_t::stream_id

Stream ID for the USB request (16 bits).

unsigned usb_request_t::zero

Flag indicating whether the zero-length packet is required (1 bit).

void(* usb_request_t::complete) (volatile usb_ep_t *ep, volatile struct usb_request *req)

Callback function invoked upon completion of the USB request.

int usb_request_t::status

Status of the USB request, indicating success or error.

unsigned usb_request_t::actual

Actual number of bytes transferred during the USB request.