基于DSP和ENC28J60的多串口与以太网数据传输系统设计  

Design of Data Transmitting System Between Multi-Channel RS232 and Ethernet Based on DSP and ENC28J60

作　　者：李阳[1] 吴成富[1] 邓红德[1] 

机构地区：[1]西北工业大学无人机特种技术国家重点实验室,陕西西安710065

出　　处：《测控技术》2011年第12期61-65,共5页Measurement & Control Technology

摘　　要：根据无人机飞控系统半物理仿真实验的需要,针对传统串口传输速度慢且多数采用一对一连接方式的问题,采用DSP TMS320F2808和新型以太网控制器ENC28J60设计了多串口与以太网之间的数据传输系统,最多可以实现5路串口的扩展。串口扩展方案中选用新型通用异步收发器MAX3100完成了SPI与异步串口之间的转换,软件设计中对TCP/IP协议进行了裁剪并实现。结果表明,采用此方案可以使系统具有简单可靠、传输效率高、成本低的特点。For the requirement of ground simulation experiment for UAV＇ s flight and control system, according to the problem that traditional serial port＇ s connection mode is one to one and has low transmission rate, DSP TMS320F2808 and Ethernet controller ENC28J60 are adopted to realize data transmission between multi-chan- nel serial ports and Ethernet, the design can expand five channels serial ports at most. A new-type universal a- synchronous receiver transmitter MAX3100 accomplishes conversion between SPI interface and asynchronous serial port. In software, TCP/IP protocol is cut out and realized. The result indicates that the system not only has steady operation between Ethernet and multi-channel serial port, but also implements high transmission performance and low cost.

关 键 词：以太网 DSP MAX3100 TCP/IP协议 

分 类 号：TP393.11[自动化与计算机技术—计算机应用技术]