目 录
1 引言 ....................................................................1
1.1 设计背景 ..........................................................1
1.2 设计意义 ..........................................................1
1.3 理论分析与方案论证 ................................................1
1.3.1 理论分析 ....................................................1
1.3.2 设计方案论证 ................................................2
2 系统硬件原理及概述 ......................................................3
2.1 STC12C5A60S2 处理器介绍............................................3
2.2 系统硬件电路综述 ..................................................3
2.2.1 硬件系统总体设计方案 ........................................3
2.2.2 USB 总线的通用接口芯片 CH375 电路.............................4
2.2.3 LCD12864 显示电路............................................5
2.2.4 按键控制电路 ................................................5
2.2.5 音频解码芯片 VS1003 电路 .....................................5
3 系统软件设计 ............................................................6
3.1 软件开发平台 ......................................................6
3.2 系统的软件设计 ....................................................7
3.2.1 软件总体分析 ................................................7
3.2.2 CH375 软件系统设计..........................................10
3.2.3 CH375 模块的 U 盘数据读取程序设计............................11
3.2.4 VS1003 模块的 MP3 文件播放程序设计...........................13
3.3 系统流程图 .......................................................14
4 系统调试结果及分析 .....................................................15
结束语 ...................................................................18
参考文献 .................................................................19
附录 .....................................................................20
致谢 .....................................................................33
