基于USB接口的单片机与PC机通信摘 要：安装USB设备不需要用户自己设置硬件与软件的选项，USB接口的传输速度要比计算机传统的串行口和并口快的多，所以USB设备已经广泛应用。由于协议的复杂性，在系统中实现USB主机功能的实例还不是很多。因此本文没有从复杂的USB总线协议入手，而是选择了南京沁恒公司出产的USB接口芯片CH375。其具有内置固件模式和可编程的2311外部固件模式，可以根据需要任意选择工作模式。关键词：单片机；CH375；USB；协议The Design of the communication between MCU and PC which is based on USB interfaceAbstract: USB device does not require users to install their own set of hardware and software options, and computer transmission speed faster than the traditional serial and parallel port , so USB devices have been widely used. Because of the complexity of the agreement, in the system of USB host function realization example is not a lot. Therefore this article does not starting with the complex USB agreement, but chose the USB interface chip CH375 which produced by Nanjing Qin Heng company, their model has a built-in firmware and firmware programmable of 2311 external model, we can choose the mode of operation with a need for arbitrary.Key words: Single Chip Microcontroller;CH375;USB;Agreement目 录1 前 言............................................................................................................................................................11.1 题目的来源与开发意义..................................................................................................................11.2 系统功能概述..................................................................................................................................12 系统硬件设计.............................................................................................................................................22.1 方案论证.................................................
