目 录
摘 要 .....................................................................................................................................I
Abstract ......................................................................................................................................II
第一张 引言 ..............................................................................................................................1
1.1 公交车报站系统的选题背景......................................................................................1
1.2 国内外关于公交车报站的研究现状..........................................................................1
1.3 研究思路及预期达到的目标......................................................................................2
第二章 设计方案论证 ............................................................................................................3
2.1 整体设计框图..............................................................................................................3
2.2 主控电路的选择..........................................................................................................4
2.3 文字显示模块的选择..................................................................................................5
2.4 语音播报模块的选择..................................................................................................6
2.5 红外遥控模块的选择..................................................................................................8
第三章 硬件电路设计 ............................................................................................................9
3.1 最小系统各部分简介..................................................................................................9
3.1.1 单片机 STC89C52 结构和功能简介 ..............................................................9
3.1.2 晶振电路.........................................................................................................11
3.1.3 复位电路.........................................................................................................12
3.1.4 串行通信电路 RS-232 及 MAX232 ..............................................................14
3.2 文字显示模块——带字库型 12864.........................................................................15
3.3 语音播报模块——ISD1700 .....................................................................................17
3.3.1 独立模式下的语音录制.................................................................................18
3.3.2 单片机对 ISD1700 的控制 ............................................................................19
3.4 红外遥控模块............................................................................................................19
3.5 单片机 IO 口的具体分配情况 .................................................................................21
第四章 软件设计 ....................................................................................................................22
4.1 软件工具介绍............................................................................................................22
4.1.1 编译调试软件——Keil uVision2...............................................................22
4.1.2 下载软件——stc-isp 4.79 ..............................................................................22
4.1.3 制图软件——Altium Designer Summer 09 ..................................................22
4.2 主程序设计................................................................................................................23
4.3 文字显示模块程序设计............................................................................................25
