CherryUSB原理性分析和应用实践

CherryUSB Principle Analysis and Application Practice

摘要: CherryUSB是一个轻量级、高性能的开源USB主从协议栈，由国内开发者维护，专为资源受限的带USB外设的嵌入式系统设计。近年来，随着带USB外设的嵌入式设备逐渐增多，CherryUSB成为了一个可靠稳定的选择。相比其他USB协议栈，CherryUSB更注重用户阅读体验、驱动全面性、稳定性和高性能，降低了开发者入门的门槛，发挥出了嵌入式设备中USB的优势。本文对CherryUSB主机和从机代码进行原理性的分析，并基于rt-thread artpi2开源硬件平台，进行CherryUSB主从机的应用实践，为嵌入式USB开发提供参考和借鉴。

Abstract: CherryUSB is a lightweight, high-performance open source USB device and host stack, maintained by domestic developers, designed for resource-constrained embedded systems with USB peripherals. In recent years, with the increasing number of embedded devices with USB peripherals, CherryUSB has become a reliable and stable choice. Compared with other USB protocol stacks, CherryUSB focuses more on user reading experience, driver comprehensiveness, stability, and high performance, lowering the barrier for developers to get started and giving full play to the advantages of USB in embedded devices. This paper analyzes the CherryUSB host and slave code in principle, and conducts the application practice of CherryUSB host and slave based on the rt-thread open source hardware platform named art-pi2, and provides a reference for embedded USB development.