typedef struct UsbDeviceMemMap {...} UsbDeviceMemMap 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. |