udc_buf_info Struct Reference

UDC endpoint buffer info. More...

#include <udc.h>

Data Fields
uint8_t	ep
	Endpoint to which request is associated.
unsigned int	setup: 1
	Flag marks setup transfer.
unsigned int	data: 1
	Flag marks data stage of setup transfer.
unsigned int	status: 1
	Flag marks status stage of setup transfer.
unsigned int	zlp: 1
	Flag marks ZLP at the end of a transfer.
unsigned int	claimed: 1
	Flag marks request buffer claimed by the controller (TBD)
unsigned int	queued: 1
	Flag marks request buffer is queued (TBD)
void *	owner
	Transfer owner (usually pointer to a class instance)
int	err
	Transfer result, 0 on success, other values on error.

Detailed Description

UDC endpoint buffer info.

This structure is mandatory for all UDC request. It contains the meta data about the request and is stored in user_data array of net_buf structure for each request.

Field Documentation

claimed

unsigned int udc_buf_info::claimed

Flag marks request buffer claimed by the controller (TBD)

data

unsigned int udc_buf_info::data

Flag marks data stage of setup transfer.

ep

uint8_t udc_buf_info::ep

Endpoint to which request is associated.

err

int udc_buf_info::err

Transfer result, 0 on success, other values on error.

owner

void* udc_buf_info::owner

Transfer owner (usually pointer to a class instance)

queued

unsigned int udc_buf_info::queued

Flag marks request buffer is queued (TBD)

setup

unsigned int udc_buf_info::setup

Flag marks setup transfer.

status

unsigned int udc_buf_info::status

Flag marks status stage of setup transfer.

zlp

unsigned int udc_buf_info::zlp

Flag marks ZLP at the end of a transfer.

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

• zephyr/drivers/usb/udc.h