目 录
1 设计要求及总体方案介绍...........................................5
1.1 设计课题任务................................................5
1.2 功能要求说明................................................5
1.3 方案介绍及工作原理..........................................5
2 硬件系统的设计...................................................7
2.1 硬件系统各模块功能介绍......................................7
2.1.1 显示电路设计.........................................7
2.1.2 发光二极管指示灯电路.................................7
2.1.3 键盘控制电路.........................................7
2.1.4 数码管电路...........................................8
2.1.5 下载口电路...........................................8
2.1.6 流水灯电路...........................................8
2.2 电路原理图..................................................8
2.3 电路 PCB 图..................................................8
2.4 元器件布局图................................................8
2.5 元器件清单..................................................9
2.6 硬件测试....................................................9
2.7 所做实物图..................................................9
3 软件系统设计....................................................10
3.1 单片机资源使用情况.........................................10
3.2 软件系统各模块功能.........................................10
3.2.1 显示 P.模块..........................................10
3.2.2 亮灯模块.............................................10
3.2.3 显示模块.............................................10
3.2.4 紧急按钮模块.........................................11
3.2.5 延时模块.............................................11
3.2.6 键处理和键扫描程序...................................11
3.3 主程序设计.................................................11
3.4 程序流程图.................................................13
3.5 交通灯程序清单.............................................15
4 设计总结........................................................16
4.1 使用说明...................................................16
