中南大学微机实验报告.docx

通信工程

彩灯控制器

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微机原理课程设计

实验名称彩灯控制器

学生姓名

***

学生学号

***

指导教师彭春华

学院计算机学院

专业班级通信**班

2019 年 9 月 20 日

摘要：本彩灯控制器实现了 8 种彩灯效果，其中 6 种为普通模式：左移

（在 8 个彩灯里只有一个灯亮，亮的状态依次左移，后面类似）、右移、两边

向中间靠拢、中间向两边发散、前四个灯与后四个灯交替亮灭、奇偶灯交替亮

灭，这 6 种模式中，我们设置了 8 次循环，闪烁完便会自动停止，等输入新的

模式号彩灯才会再次闪烁。而后两种模式则有所区别，模式效果分别为循环左

移与循环全亮全灭，不同的是彩灯并不会自动停止，而是一直循环闪烁直至有

新的模式号输入，才会切换其他模式。除了模式号的设置，此控制器还可根据

调节 AD 输入量的大小来控制彩灯效果的移动速度。

本设计的创新点为不仅实现了用 8279 键盘获取模式号，还添加了使用串口

通讯获取模式号以控制彩灯闪烁模式。

Abstract：The color lamp controller achieves eight kinds of color lamp effects,

six of which are normal modes: left shift (only one lamp is on in eight color lamps,

the state of light shifts left in turn, similar behind), right shift, two sides close to the

middle, the middle diverges to both sides, the first four lights turn on and off

alternately with the last four lights, odd and even lights turn on alternately. Out of the

six modes, we set up 8 cycles, and the flashing will stop automatically after it is

finished. Only when the new mode number is input, the color lamp will flicker again.

The latter two modes are different. The effect of the mode is that the cycle moves left

and the cycle turns on and off completely. The difference is that the color lights will

not stop automatically, but will continue to flicker until a new mode number is input

before switching to other modes. In addition to setting the mode number, the

controller can also control the moving speed of the color lamp effect by adjusting the

size of AD input.

The innovation of this design is not only to acquire the mode number with 8279

keyboard, but also to control the flashing mode of the color lamp by using serial

communication.

目录
一、 需求分析....................................................................................................................................1
1.1 设计意义...............................................................................................................................1
1.2 设计内容...............................................................................................................................1
1.3 设计要求...............................................................................................................................2
1.4 系统功能...............................................................................................................................2
1.4.1 基础功能....................................................................................................................2
1.4.2 扩展功能....................................................................................................................3
1.5 功能描述...............................................................................................................................3
二、 硬件电路设计及描述................................................................................................................4
2.1 硬件电路图...........................................................................................................................5
2.2 设计中使用到的芯片...........................................................................................................6
2.2.1 8279 和 键盘..............................................................................................................7
1） 引脚功能......................................................................................................................7
3） 8279A 的控制命令....................................................................................................10
4） FIFO 状态字..............................................................................................................13
2.2.2 8250 与 RS232.........................................................................................................13
1）数据发送过程.............................................................................................................15
2）数据接收.....................................................................................................................15
三、 软件设计思想及流程..............................................................................................................19
四、 软、硬件调试..........................................................................................................................21
五、 源程序代码..............................................................................................................................25
六、 课程设计体会..........................................................................................................................43
七、 参考文献..................................................................................................................................45
[1] 周荷清，吴秀清.《微型计算机原理与接口技术》.中国科技大学出版社，2008..............45
[2] 舒贞权，任伟利.《微机计算机原理》[M].西安交通大学出版社 ，1997...........................45
[3] 顾元刚，韩燕.《汇编语言与微机原理教程》[M].电子工业出版社，2000........................45
[4] 楼顺天，周社佳，《微机原理与接口技术》[M].科学出版社，2006.................................45