UsbDeviceMemMap

typedef struct UsbDeviceMemMap {...} UsbDeviceMemMap

Overview

Device memory map created by calling OH_Usb_CreateDeviceMemMap. A buffer using the device memory map can improve data transmission performance.

Since: 10

Related module: UsbDdk

Header file: usb_ddk_types.h

Name	Description
uint8_t* const address	Buffer address.
const size_t size	Buffer size.
uint32_t offset	Offset of the used buffer. The default value is 0, indicating that there is no offset and the offset starts from the buffer address.
uint32_t bufferLength	Length of the used buffer. By default, the value is equal to the buffer size, indicating that the entire buffer is used.
uint32_t transferedLength	Length of the transferred data.