在某项目开发过程中，为了满足数据采集系统中DSP应用程序在线FLASH更新的需求，首先借助Tornado开发环境自带的FTP服务器将应用程序下载到系统控制器内存，再封装成数据包分次传输，最后实现应用程序更新。该方案解决了某些应用场合下数据转存空间小于需要传输的文件时需分包多次传输的问题，整个软件开发过程都是在Tornado开发编译环境下进行的，能够完成对应用程序文件进行分包无差错传输。实际应用表明，按照该方案设计的软件程序可以很好地实现FLASH在线更新，具有分包传输、数据准确的特点，达到了设计要求。%In a project development process,in order to meet the needs of online Flash update of DSP application program in data acquisition system,first of all,the application program is downloaded to the system controller memory by means of the Tornado development environment built-in FTP server,then encapsulated into packets to transmit,and finally the application program update is realized. The program solves the problem that when data dump space is less than the size of data transfer file, and the subpackage transmission in several times is required. The entire software development process is performed in the Torna-do development environment,which is able to complete the subpackage error-free transmission of application files. The practical application shows that the software program designed according to the scheme can achieve a good Flash online update,has the characteristics of subpackage transmission and data accuracy,and can meet the design requirements.
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