摘要
为实现某款车用网关控制器的实车应用程序更新功能、方便实车调试,设计了基于CAN总线的BootLoader系统.介绍了BootLoader系统实现的基本思路及具体实现方式,详细分析了以飞思卡尔控制器XET256为平台的存储空间分配、地址表示方式、存储空间擦除与写入方法.基于以CAN标准协议为基础的简单自定义命令和S19文件协议,实现了BootLoader与上位机之间信息的交互.试验结果表明,该BootLoader系统能够正确实现应用程序的更新及引导应用程序的执行,提高了网关控制器实车调试效率.
The BootLoader system based on CAN bus is designed to update the application software of the Gateway controller used in some vehicle project.The basic idea and specific procedures of the BootLoader system are introduced.The flash assignment,address expression,flash erasing and writing methods are described in details based on the platform of freescale controller XET256.By interpreting the S19 protocol and some simple self-defined commands based on the standard CAN protocal,the data transmission within the BootLoader system is realized.It is verified that the designed BootLoader is reliable and efficient in updating and leading the execution of the application software,which assists the development of the Gateway controller.
出处
《山东理工大学学报（自然科学版）》
CAS
2014年第5期10-15,共6页
Journal of Shandong University of Technology:Natural Science Edition
