摘要
为提高以太网的数据传输效率,设计了以MSP430FG4618为核心的控制单元,驱动以太网接口芯片DM9000EP的嵌入式系统的以太网接口。通过单片机完成网卡芯片的初始化、数据的封装、接收和发送控制等,而网卡芯片则负责以太网数据的接收和发送。测试结果表明了UDP数据传输过程,经自行裁剪的UDP/IP协议栈,提高了UDP传输效率。该接口具有硬件接口简单、外围器件少、价格低廉、开发周期短等特点,同时也能满足测试、采集等高速数据传输系统的要求。
In order to improve the Ethernet data transmission efficiency,it designed a embedded Ethernet interface,whose core control unit is MSP430FG4618 to drive the Ethernet interface chip DM9000EP.Through the MCU to completed the initializatioin of the Ethernet card chip,data package,the control of receiving and sending;while the Ethernet card chip is used to receive and send data from Ethernet.The test results showed that the transmission process of UDP data;and UDP transmission efficiency is increased through cutting the UDP/IP protocol stack.With simple design,low price,little peripheral equipment and short development cycle,the interface can satisfy some requires from the testing,data acquisition systems of high speed data transmission.
出处
《自动化与仪表》
北大核心
2010年第7期17-20,共4页
Automation & Instrumentation
基金
国家自然科学基金项目(60871041)
