基于DSP和FPGA的CAN总线通信系统设计与实现

Design and implementation of CAN bus communication system based on DSP and FPGA

针对现代高速条件中数据传输的问题,提出基于DSP和FPGA的CAN总线通信系统,对CAN总线进行控制,从而能够实现数据的有效传输。系统使用SJA2512作为CAN总线的控制器,使用PCA566作为其收发器,使用并行处理方式实现总线控制的读写和信号的控制,通过数据处理单元实现总线控制器的数据传输,能够避免DSP和FPGA之间数据传输时间的浪费。最后将设计的CAN总线通信系统进行实验,实验结果表示,在数据传输过程中系统较为稳定并且可靠,能够有效满足高速条件中的信号传输及处理需求。

Aiming at the problem of data transmission in modern high speed condition,a CAN bus communication system based on DSP and FPGA is proposed to control CAN bus,so that data can be transmitted effectively. The system uses SJA2512 as the controller of CAN bus,using PCA566 as the transceiver,use control bus control to read and write and parallel signal processing,data transmission through the data processing unit to realize the bus controller,can avoid the waste of time of data transmission between DSP and FPGA. Finally,the designed CAN bus communication system is tested.The experimental results show that the system is stable and reliable in data transmission,and it can effectively meet the demand of signal transmission and processing in high-speed condition.