_USBDDmaDescriptor Struct Reference

Struct used for USBD DMA Link List Transfer Descriptor, must be 16-bytes aligned. More...

#include <USBD.h>

Public Attributes
uint32_t	bufferLength:16
uint32_t	ctrlSettings:8
void *	pDataAddr
void *	pNxtDesc
uint32_t	reserved:8
uint32_t	used

Detailed Description

Struct used for USBD DMA Link List Transfer Descriptor, must be 16-bytes aligned.

(For USB, DMA transfer is linked to EPs and FIFO address is EP defined)

Definition at line 181 of file USBD.h.

Member Data Documentation

bufferLength

uint32_t _USBDDmaDescriptor::bufferLength

Not used

Definition at line 187 of file USBD.h.

ctrlSettings

uint32_t _USBDDmaDescriptor::ctrlSettings

DMA Control setting register value

Definition at line 187 of file USBD.h.

pDataAddr

void* _USBDDmaDescriptor::pDataAddr

Pointer to data buffer address

Definition at line 185 of file USBD.h.

pNxtDesc

void* _USBDDmaDescriptor::pNxtDesc

Pointer to Next Descriptor

Definition at line 183 of file USBD.h.

reserved

uint32_t _USBDDmaDescriptor::reserved

Control settings

Definition at line 187 of file USBD.h.

used

uint32_t _USBDDmaDescriptor::used

Length of buffer Loaded to DMA register, OK to modify

Definition at line 191 of file USBD.h.

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

• USBD.h