基于32位处理器的网络驱动及协议栈研究  

Research on protocol stack and network drive based on 32-bit embedded processor

作　　者：曹绍华[1] 史永宏[1] 

机构地区：[1]中国石油大学(华东)计算机与通信工程学院,山东青岛266580

出　　处：《现代电子技术》2016年第19期11-15,共5页Modern Electronics Technique

摘　　要：随着嵌入式Web的飞速发展,以Internet为中间环节使不同嵌入式设备进行通信的需求日益强烈,特别是在工业监控领域。采用项目组自行研发的内嵌有MAC模块的定制版32位处理器作为硬件平台,以此为基础设计了基于描述符的DMA传输机制的网络驱动。同时,为了实现稳定数据通信及Web浏览器功能,对嵌入式TCP/IP协议栈LwIP进行了无操作系统移植,并对协议栈内部的数据管理方式及底层接口进行详细分析。测试结果表明,LwIP协议栈适用于工业远程监控,能够在实现稳定通信的同时兼顾速度与小内存消耗。With the rapid development of the embedded Web, the communication demand among different embedded devices through the Internet becomes increasingly intense, especially in the industrial monitoring field. The customized 32-bit processor embedding MAC module was taken as the hardware platform, which was developed by the project group itself. And on this ba- sis, the network drive of descriptor-based DMA transfer mechanism was designed. In order to realize the functions of stable data communication and Web browser, the protocol stack LwlP of the embedded TCP/IP was performed with transplantation without operating system. The data management method and bottom-layer port inside the protocol stack are analyzed in detail. The test re- sults show that the LwlP is suitable for the the industrial remote monitoring, and can realize stable communication while ensuring the high speed and low memory consumption.

关 键 词：LWIP协议栈 网络驱动 嵌入式系统 片上可编程系统 

分 类 号：TN915.04[电子电信—通信与信息系统] TM417[电子电信—信息与通信工程]