基于DSP和ENC28J60的多串口与以太网数据传输系统设计

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...

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

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-channel serial ports and Ethernet,the design can expand five channels serial ports at most.A new-type universal asynchronous 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.