uhc_transfer Struct Reference

#include <uhc.h>

Data Fields
sys_dnode_t	node
struct k_fifo	queue
struct k_fifo	done
uint8_t	addr
uint8_t	ep
uint8_t	attrib
uint16_t	mps
uint16_t	timeout
unsigned int	claimed: 1
unsigned int	queued: 1
unsigned int	setup: 1
void *	owner

Detailed Description

UHC endpoint buffer info

This structure is mandatory for all UHC request. It contains the meta data about the request and FIFOs to store net_buf structures for each request.

The members of this structure should not be used directly by a higher layer (host stack).

Field Documentation

addr

uint8_t uhc_transfer::addr

Device (peripheral) address

attrib

uint8_t uhc_transfer::attrib

Endpoint attributes (TBD)

claimed

unsigned int uhc_transfer::claimed

Flag marks request buffer claimed by the controller

done

struct k_fifo uhc_transfer::done

FIFO to keep completed requests

ep

uint8_t uhc_transfer::ep

Endpoint to which request is associated

mps

uint16_t uhc_transfer::mps

Maximum packet size

node

sys_dnode_t uhc_transfer::node

dlist node

owner

void* uhc_transfer::owner

Transfer owner

queue

struct k_fifo uhc_transfer::queue

FIFO requests to process

queued

unsigned int uhc_transfer::queued

Flag marks request buffer is queued

setup

unsigned int uhc_transfer::setup

Flag marks setup stage of transfer

timeout

uint16_t uhc_transfer::timeout

Timeout in number of frames

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The documentation for this struct was generated from the following file:

• include/zephyr/drivers/usb/uhc.h