目 录
摘 要...................................................................................................................................I
ABSTRACT............................................................................................................................I
第 1 章 绪论........................................................................................................................1
1.1 课题背景................................................................................................................1
1.1.1 选题背景......................................................................................................1
1.1.2 我国现状......................................................................................................1
1.1.3 LED 显示屏的市场前景 .............................................................................1
第 2 章 方案论证与选择....................................................................................................2
2.1 系统硬件方案设计................................................................................................2
2.1.1 通信系统......................................................................................................2
2.1.2 LED 点阵显示屏 .........................................................................................3
2.1.3 LED 点阵屏的驱动方式 .............................................................................3
2.1.4 硬件设计方案..............................................................................................4
2.2 系统软件方案........................................................................................................5
2.2.1 单片机编程语言..........................................................................................5
2.2.2 系统软件编译器介绍..................................................................................6
2.2.3 上位机控制传输软件..................................................................................6
2.2.4 下载软件......................................................................................................7
第 3 章 系统硬件设计..........................................................................................................7
3.1 硬件系统的总体设计............................................................................................8
3.2 AVR 单片机最小系统设计...................................................................................8
3.2.1 串口通信电路设计......................................................................................8
3.2.2 复位电路设计..............................................................................................9
3.2.3 单片机的下载口........................................................................................10
3.2.4 AVR 单片机的时钟电路...........................................................................11
3.2.5 AVR 单片机最小系统...............................................................................11
3.3 LED 点阵屏设计及驱动电路设计 ...................................................................12
3.3.1 驱动电路设计............................................................................................13
3.3.2 行驱动电路设计........................................................................................13
3.3.3 列驱动电路设计........................................................................................15
3.4 LED 点阵屏设计 .................................................................................................16
第 4 章 系统软件设计......................................................................................................18
4.1 主程序设计..........................................................................................................18
4.2 显示程序设计......................................................................................................19
4.2.1 显示驱动程序的设计................................................................................19
4.2.2 点阵数据的获取........................................................................................19
4.2.3 串口通信程序的设计................................................................................20
第 5 章 系统制作与调试..................................................................................................23
5.1 系统硬件部分的调试............................................................................................23
5.1.1 短路与虚焊检测........................................................................................23
5.1.2 上电测试....................................................................................................23
5.1.3 串口调试....................................................................................................24
