无需内存管理单元的微控制器动态程序管理方法

嵌入式软件设计的挑战之一是为处理器提供独立的应用程序加载、更新及删除等功能而无需内存管理单元支持.实现上述功能有助于提升系统易用性和便携性,可节省应用程序集成和重新编译的工作量,支持分发二进制文件到其它设备.本文讨论了解决这一挑战的几种观点,并基于位置无关技术为Cortex-M内核提供了一种动态程序管理方法.

Dynamic-program-management Method for Microcontrollers without MMU

One of the challenges of embedded software design is providing the functions of installing,updating and deleting application for processor without memory management unit.The functions are contributed to improve both ease-of-use and portability,and can save ap-plication integrating and re-compiling effort.They can support binary files to be distributed to other devices also.In the article,several thoughts to overcome this challenge are discussed,and a method to implement dynamic-program-management based on position-inde-pendent technique for ARM Cortex-M is provided.