分立器件测试仪嵌入式软件设计

发布时间：2019-05-29 10:58

【摘要】：分立器件是体现国家基础科技实力的重要产业。随着电子等相关行业的高速发展和广泛应用,分立器件产业的重要性也越发突出。而在整个产业链中,测试是贯穿整个产业的一部分,测试在整个分立器件行业有着极其重要的作用。因此,对分立器件测试技术及仪器的研究具有很积极的现实意义。嵌入式技术在越来越多的领域得到广泛的应用,其中包括电子测试行业。结合嵌入式技术,测试仪器不仅功能越来越强大,同时在仪器性能指标上有很大的提高。本文先介绍了分立器件测试仪的整体体系结构,以及软件和硬件需求。根据测试仪的需求,设计中选取集成ARM920T内核的S3C2440A芯片作为核心控制板的CPU,同时分别选用Nor Flash作为引导程序的存储器,选用Nand Flash作为测试程序和数据的存储器。文中完成存储器系统及驱动设计；针对测试仪启动需求的特点专门设计引导程序DDT Boot,在引导程序中完成所需接口设备的驱动设计,实现与上位机通信。此外,文中详细阐述了对测试仪总线驱动函数的设计。基于总线驱动函数,完成了各个功能板底层功能函数的设计,并进行封装。这为测试应用程序的编写提供良好的底层功能函数接口,也增加了程序的通用性。应用封装好的功能函数,可以很好完成测试程序。配合相应的上位机软件,实现测试程序的图形化编程,非常具有应用价值。
[Abstract]:Discrete devices are an important industry that embodies the basic scientific and technological strength of the country. With the rapid development and wide application of electronics and other related industries, the importance of discrete device industry is becoming more and more prominent. In the whole industrial chain, testing is a part of the whole industry, and testing plays an extremely important role in the whole discrete device industry. Therefore, it is of great practical significance to study the testing technology and instruments of discrete devices. Embedded technology has been widely used in more and more fields, including electronic testing industry. Combined with embedded technology, the test instrument not only has more and more powerful function, but also has a great improvement in the performance index of the instrument. This paper first introduces the overall architecture of discrete device tester, as well as the software and hardware requirements. According to the requirements of the tester, the S3C2440A chip integrated with ARM920T kernel is selected as the CPU, of the core control board, and the Nor Flash is selected as the memory of the boot program, and the Nand Flash is selected as the memory of the test program and data. In this paper, the memory system and driver design are completed, and according to the characteristics of the starting requirement of the tester, the boot program DDT Boot, is specially designed to complete the driver design of the required interface equipment in the boot program, and to realize the communication with the upper computer. In addition, the design of bus driver function of tester is described in detail. Based on the bus driver function, the design of the bottom function of each function board is completed, and the encapsulation is carried out. This provides a good interface of the underlying function for the writing of the test application, and also increases the generality of the program. The test program can be well completed by using the packaged function. It is of great application value to realize the graphical programming of the test program with the corresponding upper computer software.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP311.52

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