基于EPP模式下的高速并行通信接口

High-Speed Parallel Communication Interface Base on EPP

本文介绍了EPP模式下并口的操作方法与通信原理。通过EPP协议实现了16位I／O并行高速通信接口的设计；并利用控件TvicHW32在Windows下基于VC编程环境实现了计算机与外部设备的通信以及中断方式下的实时控制。该文还提供了部分硬件原理图及程序。

This article describes the operation methods and communication principle of the parallel port under the EPP mode. The 16-bit I/O parallel high-speed communication interface is designed through the EPP protocol. And the communication between the computer and its peripheral equipments along with the real-time control under interrupt mode are realized by means of TvicHW32 control based on VC programming environment in Windows. The paper provided a part of the hardware schematic diagrams and programs as well.