The device Abstract Layer provides a set of standard communication interface functions unrelated with specific device, which is mapped to device drivers by file table, device table and driver table.
设备抽象层为上层应用程序提供了一套标准的、与设备无关的通信接口,并且通过文件描述表、设备描述表和驱动描述表建立了从通信接口到设备驱动的映射。
The driver codes are written according to the standard USB device Class Specification for DFU, therefore the driver itself can be universally applied to all the DFU devices.
因为驱动是根据标准的DFU类规范要求所写,因而对任何DF U设备都具有很强的通用性。
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