AT89S52单片机实验系统的开发与应用

文档编号:JD693  文档字数:35849,页数:67

摘   要
目前单片机应用已渗透到各个领域，单片机技术的发展也因此日新月异。作为实践性很强的应用型学科，单片机研发及教学离不开实验。传统的单片机实验系统，需要频繁拔插烧写单片机芯片来编程，依赖于仿真机调试，实验成本高且效率低，已不适应现代科技开发需求。如何充分合理利用单片机的性能，方便用户高效学习与开发产品成为当前的研究热点。本文从微处理器、嵌入式系统和C语言等三个方面着手，以AT89S52单片机为核心，设计出功能较强的新型单片机实验系统。
首先研究了微处理器及开发工具，嵌入式系统类型特点、嵌入式操作系统等基础理论。
其次深入研究AT89S52单片机性能特点，为实验系统硬件开发打下了基础。并针对新型实验系统软件开发要求，对C语言进行应用性研究。
最后，以AT89S52为核心，设计出包含集成稳压电路、时钟电路、复位电路、液晶显示与控制电路、ISP在系统可编程器、RS232串行通信电路、开关电路、发光二极管显示电路和ISD2560语音芯片的录音/播放电路等九种外围电路，并汇总为完整的原理图。采用电子CAD（PROTEL99SE软件）、图像处理软件（PhotoCap3）、计算机画图板设计绘制电路原理图后再装配成实验板。利用C语言调整软件dev C++IDE、编译器Keil C（uVision-51）和调试器WinIDEA 9.0、ISP软件等技术创新，实现了ISP在线仿真调试功能，将嵌入式技术融入到单片机实验系统开发与应用中，适合于单片机系统开发、教学等需要频繁刷新程序的场合，极大地提高了程序开发的效率，达到优化单片机实验系统功能的目的。

关键词：微处理器  嵌入式系统  AT89S52单片机  实验系统  调试与仿真

Abstract
At present the monolithic integrated circuit（Microcontroller Unit,MCU）applications have penetrated into all fields，Therefore the monolithic integrated circuit technology development also changes with each new day. Practical application-as a strong academic, monolithic integrated circuit research and teaching can not leave the experiment. The traditional monolithic integrated circuit experiment system, needs frequently to pull out inserts the fever to write the monolithic integrated circuit chip to program，relies on to the simulation machine debugging, The experimental cost high also the efficiency is low, already unsuitable modern science and technology development demand. How to make rational use of monolithic integrated circuit performance, user-friendly and efficient product development has become the current study hot spot. This article from the microprocessor, Embedded Systems and the C language and so on three aspects begins, to draw up take the AT89S52 monolithic integrated circuit as a core, designs the function stronger new monolithic integrated circuit experiment system.
Firstly, studied the microprocessor and the development tools, Embedded Systems type characteristic, inserts basic theory and so on type operating system.
Secondly, deep researched in AT89S52 monolithic integrated circuit performance characteristic, raised utilization of the information, laid a foundation for the development of experimental hardware，and aimed at the new experiment system software development request, conducted the application research to the C language.
Finally, took AT89S52 as the core, Designed contains the integration voltage-stabilizer circuit, the clock electric circuit, repositions the electric circuit, the liquid crystal display and the control circuit, ISP in-system programmable devices, the RS232 serial communication electric circuit in the system, the switching circuit, LED display circuit chip and the ISD2590 pronunciation chip recording/broadcast electric circuit and so on nine kind of periphery electric circuits, and compiles for the integrity schematic diagram. After uses electronic CAD (PROTEL99SE software), picture processing software (PhotoCap3), and the computer picture chart board design plan electric circuit schematic diagram Assembly the experimental board.
Using C language adjustment software dev C++IDE, compiler Keil C (uVision-51) and debugger WinIDEA 9.0, technical innovation and so on ISP software, has realized the ISP on-line simulation debugging function, Inserts the embedded technology to melt into to in the monolithic integrated circuit experiment system development and the application, for the monolithic integrated circuit study and should the amount used body custom make, suit to the monolithic integrated circuit system development, the teaching and so on needs frequently to renovate the procedure the situation, enormously enhanced the procedure development efficiency, will achieve the optimized monolithic integrated circuit experiment system function the goal.

Key words：Microprocessor；Embedded Systems；AT89S52 MCU；Experimental system； Debugging and simulation

目  录
摘  要 Ⅰ
ABSTRACT Ⅱ
第一章 绪论 1
1.1 研究背景 1
1.2微处理器概述 2
1.3微处理器应用 5
1.4本课题研究的主要内容 5
第二章 嵌入式系统概述 7
2.1嵌入式技术简介 7
2.2嵌入式系统概述 7
2.3嵌入式系统的类型及特点 8
2.4嵌入式操作系统 9
2.5 AT89S52高性能单片机 11
2.6本章小结 20
第三章 C语言应用 21
3.1 C程序的组成部分 21
3.2 数据类型 24
3.3 格式输入与输出及案例 24
3.4 C运算元及功能 26
3.5 比较与逻辑运算元 27
3.6 C控制结构 27
3.7 C预处理程序 27
3.8 C函数库及应用 28
3.9 C语言程序的编辑、编译、运行 31
3.10 本章小结 32
第四章 AT89S52高性能单片机实验系统开发 33
4.1 AT89S52实验系统的设计 33
4.2 AT89S52单片机实验系统使用方法 44
4.3 AT89S52单片机实验系统实验项目 46
4.4 实验系统的功能扩展 51
4.5本章小结 57
第五章 总结与展望 59
5.1文档的主要工作及总结 59
5.2研究展望 59
参考文献 61
致 谢 62

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