基于DSP的CAN总线转换器的设计

Design of CAN Bus Adapter Based on DSP

阐述了一种以TMS320LF2407A为核心,RS232、RS485和CAN总线之间接口和协议转换的设计方案,实现了这几种通用的串行总线之间的通信;叙述了总线转换器的功能、硬件设计、通信协议和软件设计。总线转换器的通信网络接口为多种异型总线之间的互联和构建比较复杂的总线型网络提供了一种解决方案。

Based on Tl＇s DSP TMS320LF2407A,a design method of bus interface and protocol conversion in RS232,RS485 and CAN bus is described.The communication is also realized in these universal serial buses.The functions,hardware circuits,software design and flow charts are given in this paper.A method of the connection in different buses and construction bus network is provided by the network interface in the adapter.