基于DSP虹膜识别系统中Flash烧写方法的研究

Study of Flash Burning Method in Iris Recognition System Based on DSP

为实现基于DSP的虹膜识别系统上电自启动的需求,需要将用户应用程序烧写入非易失性存储器中。分析了DSP系统片外Flash存储器的烧写原理,提出了一种利用存储器操作模块程序来进行Flash烧写的方法,阐述了DSP片外Flash烧写关键点以及如何确定烧写对象、源地址和目的地址,研究了在仿真环境下通过模块化程序操作DSP片外Flash存储器的过程。使用该方法完成虹膜识别系统片外Flash烧写,脱机后系统运行稳定。

In order to implement DSP-based iris recognition system,user＇s application program needs to be burned into the non volatile memory.In this paper we study the mechanism of burning an external flash memory for a DSP system.We propose an approach that uses non-volatile memory to operate modulized program to burn flash memory.In particular,we focus on the key of DSP external flash memory burning and the means of determining the burning object,source address and destination address.We also study the process of accessing the DSP external flash memory via modulized program in a simulated environment.In this way,we succeed to finish the flash burning out of the DSP board in the iris recognition system.