讲解USB接口原理： USB通信基本知识概要 USB的通讯协议 USB模块的编程方法 -USB interface on the principle : USB Communication outline basic knowledge of USB communication protocol modules USB Programming

基于Cypress的68013实现的USB转I2C的源代码。USB端通信是利用预留指令0xA3实现的，基于最简单的控制流程。适合大家初步接触USB编程的人。下端用C51模拟I2C总线。-68013 Cypress-based implementation of the USB-I2C source code. USB client communication is the use of reserved instruction 0xA3 to achieve, based on the most

单片机USB host,采用STM32单片机编程控制CH374作为USB host接口。实现USB主机通信功能。-MCU USB host, using STM32 microcontroller programming control CH374 as a USB host interface. Implement USB host communications.