基于S12XDP512双核微处理器的拖拉机整机控制器CAN节点开发  

CAN node development of tractor whole controller based on S12XDP512 dual-core MCU

作　　者：王培金 李军伟[1] 孙辉安 高松[1] 李德芳 季宇杰 Wang Peijin;Li Junwei;Sun Huian;Gao Song;Li Defang;Ji Yujie(School of Traffic ＆ Vehicle Engineering, Shandong University oat. Technology, Zibo, 255000, China;New Energy Research Institute Electric Drive Development Center of Geely Automobile Research Institute （NingBo） Co. LTD. , Ningbo, 315000, China;Lovol Heavy Industry Co. , Ltd. , Weifang, 261200, China)

机构地区：[1]山东理工大学交通与车辆工程学院,山东淄博255000 [2]吉利汽车研究院(宁波)有限公司新能源研究院电驱开发中心,浙江宁波315000 [3]雷沃重工股份有限公司,山东潍坊261200

出　　处：《中国农机化学报》2018年第4期63-67,共5页Journal of Chinese Agricultural Mechanization

基　　金：国家重点研发计划项目(2016YFD0701101)

摘　　要：Freescale S12XD系列双核单片机增加精简指令流(RISC)XGATE内核,该内核处理速度比主CPU快1倍、中断响应时间短、功耗低,可大幅降低主CPU的中断负荷,提高实时系统的性能。陈述S12XDP512双核单片机在拖拉机整机控制器CAN节点应用上的优越性能,设计CAN总线通信的硬件接口电路,介绍XGATE协处理器的工作原理,给出XGATE处理CAN总线通信的C编程实现和相关注意细节。Freescale S12XD seriesdual-core MCU adds a core to itself named XGATE,which has Reduced Instruction-Set.The processing speed of the core is twice as fast as the master CPU,and it has the advantage of short interrupt response time and low power consumption,so it can greatly reduce the interruption load of the master CPU and improve the performance of real-time system.This paper introduces the high performance of S12XDP512 dual-core MCU in the application of CAN node in the whole vehicle controller of tractor.The hardware interface circuit is designed,the operating principle of the XGATE coprocessor is introduced and the C programming implementation of the XGATE coprocessor handles CAN bus communication and related details which should be pay attention to are given.

关 键 词：S12XDP512 XGATE 整机控制器 CAN通信 中断 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]