摘要
基于芯片固化的Bootloader基础上,研究USB在IAP编程中应用的方法,分析Cortex2-M3核的存储器组织结构及启动模式、配置和访问机制,IAP实现的机理,给出了通过USB接口实现IAP的步骤和编程要点,下载的保障机理,并对IAP下载的应用程序编写和实现进行说明。相对串口下载,系统数据下载速度极大改善,提高下载效率。
Research the method of USB interface in IAP application based hootloader firmware on chip, Analysis memory organization, startup mode, configuration, access mechanisms of Cortex2-M3 core, principle of IAP, Describe the Programming key points and steps of IAP code through USB interface, also given the security mechanism of download. application programming downloaded of IAP and implementation are explained, compared with serial interface, it im- proves greatly download speed of system data and download efficiency.
出处
《国外电子测量技术》
2010年第11期68-70,78,共4页
Foreign Electronic Measurement Technology
基金
陕西省教育厅中试项目(09JC15)
陕西省科技厅工业攻关项目(2009K07-08)资助
