在RTX实时环境下,通过设计简化的TCP/IP协议栈以及以太网驱动程序,开发了基于RTL8139以太网控制器的UDP通信模块,实现了几种常见的通信协议:IP、UDP、ARP、ICMP等.经过测试,简化的协议栈系统开销大大减小,协议功能实现正确,将其应用在某课题的实时以太网通信中,数据收发正常,系统工作稳定,从而规避了RTX的实时协议栈RT-TCP/IP由于缓存溢出而导致不能正常工作的问题.%In RTX real-time environment, several general communication protocols including IP, UDP, ARP, IC MP and so on are realized by designing simplified TCP/IP protocol stack and Ethernet drivers, and the UDP communication module based on RTL8139 Ethernet controller is developed. The test results show that the cost of simplified protocol stack system is cut down to a great extent, all protocol functions are realized correctly. When applied to real-time Ethernet communication in some specific task, the system sends and receives data normally, the functions are stable, to avoid the overflowed buffer caused malfunction in real-time protocol stack RT-TCP/IP in RTX.
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