基于DSU的Nor Flash在线编程方法研究

The Research About the DSU-based Method of On-line Nor Flash Programming

针对现有Nor Flash在线编程方法操作复杂的问题,提出了一种基于DSU片上调试单元并通过PC机串口直接编程的Nor Flash通用在线编程方法.Flash编程软件读取存储在配置文件中Nor Flash的编程命令序列和待编程目标文件中的数据,通过串行口发送给DSU单元并由其完成编程操作.应用结果显示,该方法简便易行,具有良好的通用性.

Aiming at the operation complicated problem in the existing Nor Flash programming mode,this paper proposes a common method to online program Nor Flash directly through PC port which is based on DSU on-chip debug unit.In this method,Flash programming software reads the Nor Flash command sequences from a configuration file and data to be programmed of object files and through UART port sends to the DSU,then DSU programs Flash.And experimental results show that the method is easy to practice and has good universality.