基于CAN总线的Bootloader设计与实现  

Design and implement of Bootloader based on CAN bus

作　　者：王琦[1] 黄悦鹏 邢正阳 苏骏凯 倪孟雄 

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210000 [2]上海奉天电子有限公司,上海201800

出　　处：《微型机与应用》2015年第18期14-16,共3页Microcomputer & Its Applications

摘　　要：使用BDM工具下载或升级应用程序,不仅麻烦而且稳定性也不高。采用在线更新的方法,设计并实现了一种基于CAN总线的Bootloader。介绍车载网络通信与诊断服务的实现、Bootloader的设计以及其在车载控制单元的实现,并在此基础上,提出最小Bootloader的概念,可以有效提高程序的灵活性。实验结果证明,Bootloader能正确引导加载程序的运行,准确方便地实现应用程序的下载和更新,在软件开发和测试过程中能够极大地提高工作效率,而且Bootloader的稳定性也很高。还能将网络层和UDS诊断服务部分方便地移植到其他芯片上,为后序的软件开发与测试提供了方便。Using BDM tools to download or upgrade the application brings not only inconvenience but also low reliability. This paper designs and implements a Bootloader based on CAN bus to download or update application online. It introduces implements of network communication and diagnostic services, design of Bootloader and its implements in vehicle control unit. And on this basis, it puts forward minimum Bootloader, which can improve flexibility efficiently. Test proves that Bootloader can boot and load correctly, download and update applications accurately and conveniently, which can improve efficiency in software development and test greatly. Also, stability of this Bootloader is very high. Moreover, network layer and UDS diagnostic services of this Bootloader can be transplanted to other chips, providing convenience for following software development and test.

关 键 词：引导装载程序 在线更新 诊断服务 CAN总线 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]