带看门狗喂狗功能的TMS320F2812远程加载技术  

A Technology of Remote Flash Programming to TMS320F2812 with Watchdog-feeding Function

作　　者：蒋炯炜 雷志军[1] 于鹏[1] 

机构地区：[1]中国电子科技集团公司第58研究所,江苏无锡214072

出　　处：《电子与封装》2016年第10期23-26,共4页Electronics & Packaging

摘　　要：为了提高系统可靠性,外部硬件看门狗电路的应用越来越广泛,但多数情况下,更新程序的同时无法完成喂狗操作,致使芯片不断复位,无法完成软件升级。在此基础上提出了一种基于RS232的带喂狗功能的TMS320F2812程序的远程加载方案,并详细阐述了实现过程。该方案不仅摆脱了Flash编程时对JTAG接口的依赖,而且对底层Flash API函数进行了修改,加入了喂狗程序,灵活性高,非常适用于军用领域,具有较大的实用价值。In order to improve system reliability, external hardware watchdog is increasingly used. But in most cases, the update operation cannot be implemented while feeding the watchdog, which incurs constant system resetting. A technology of remote flash programming to TMS320F2812 based on RS232 Interface is proposed with detailed execution process. The technology modifies the underlying Flash API function and enables programming while feeding the watchdog. This method is applicable for military use.

关 键 词：F2812 RS232 看门狗 远程更新 

分 类 号：TN402[电子电信—微电子学与固体电子学]