基于DSP的CAN总线与以太网互联系统研制  

Development of Ethernet/CAN-bus NIC based on DSP

作　　者：孙兵[1] 何瑾[1] 陈广厦[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,哈尔滨150001

出　　处：《仪器仪表学报》2008年第2期377-380,共4页Chinese Journal of Scientific Instrument

摘　　要：目前,实现由CAN总线设备构成的现场网络与由以太网构成的企业管理网络之间的信息共享已成为工业控制领域的发展趋势,所以本文介绍了一种基于TMS320F2812的CAN总线与以太网互联系统的设计方法,通过该系统可实现CAN总线与以太网的互连。本文给出了系统各组成部分的硬件及软件的设计与实现,并对互联的准确性、应用效果进行了验证和分析。控制部分采用TI公司的TMS320F2812,以太网接口模块控制芯片采用Realtek公司的RTL8019AS,CAN总线接口模块采用TI公司的SN65HVD230,硬件电路各模块的设计还包括存储器扩展、电源电路、复位电路、串口通信模块、JTAG仿真口模块等。本系统软件分三大模块:RTL8019AS驱动程序、TCP/IP协议移植、CAN通信程序。系统在测试中达到预期的效果。Currently, the realization of information communion between CAN-bus equipment and Ethernet network equipment becomes the development trend in industrial control field, an Ethernet/CAN-bus NIC based on TMS320F2812 is introduced in this paper, which realizes the connection between CAN-bus and Ethernet. The hard- ware and software structures of the system are given, the veracity and application effect of the system are analyzed and verified. This system uses TMS320F2812 from TI as the control module, RTLS019AS from Realtek as the Ethernet module and SN65HVD230 from TI as the CAN Driver. The hardware circuit design also includes memory expansion circuit, power supply circuit, reset circuit, serial port communication module and JTAG simulation module. The system software consists of three main modules： RTLS019AS driver, TCP/IP protocol transplant and CAN-bus communication program. Application test proves that the system has achieved the anticipated purpose.

关 键 词：以太网 CAN总线 TMS320F2812 RTL8019AS 

分 类 号：TN915.03[电子电信—通信与信息系统]