嵌入式linux 入门笔记.pdf

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嵌入式 Linux 入门笔记
作者：阿南
嵌入式Linux入门笔记.....................................................................................................................1
前言...........................................................................................................................................3
第一阶段 在PC机上学习熟悉Linux.......................................................................................3
一．Red Hat Linux 9 下的常用操作...............................................................................4
二．Minicom的使用........................................................................................................6
三．NFS的使用 ...............................................................................................................6
四．应用程序编程实验...................................................................................................7
五．模块编程实验...........................................................................................................7
六．简单的字符设备驱动实验.......................................................................................8
第二阶段 在开发板上学习研究Linux.................................................................................10
一．MIZI Linux SDK for S3C2410 开发环境及工具使用..........................................11
1. 构造软件开发环境...........................................................................................11
2. 编译嵌入式Linux生成image...........................................................................12
3. 将嵌入式Linux的image下载到目标板...........................................................14
4. 嵌入式平台测试...............................................................................................21
二．嵌入式Linux驱动开发...........................................................................................22
1. 模块编程实验...................................................................................................22
2. 点亮目标板的LED.............................................................................................23
3．按键中断实验...................................................................................................28
4．定时器驱动及PWM输出.....................................................................................33
5．点亮目标板LCD.................................................................................................38
6．安装触摸板.......................................................................................................41
三．构建完整的嵌入式Linux系统...............................................................................42
1．桌面系统的启动...............................................................................................42
2．下载可读写的文件系统Yaffs.........................................................................42
3．Yaffs文件系统移植.........................................................................................44
4．Yaffs作为根文件系统启动.............................................................................52
5．完整的嵌入式Linux系统.................................................................................53
四．嵌入式WEB服务器................................................................................................53
1．Boa移植.............................................................................................................53
2．WEB应用开发.....................................................................................................55
五．NFS的配置 .............................................................................................................57
1．主机的NFS服务器配置.....................................................................................57
2．目标机的NFS客户端配置.................................................................................58
3．出现的问题.......................................................................................................58
第三阶段 在项目中应用Linux.............................................................................................58
一． 进程间隔定时器...................................................................................................59
1．概念...................................................................................................................59
2．数据结构...........................................................................................................59
3．操作函数...........................................................................................................60
4．测试程序...........................................................................................................60
二．虚拟地址.................................................................................................................61
三．以太网控制器 —— CS8900A硬件调试..............................................................62
1．调试步骤...........................................................................................................62
2．出现过的问题...................................................................................................63
四．WiFi无线网络.........................................................................................................63
1．在RedHat9 上安装TL-WN210 无线网卡驱动...................................................64
2. 无线网络配置...................................................................................................67
3．RedHat9 上使用WL-110 无线网卡...................................................................71
4．无线网卡控制器PD6710 硬件测试..................................................................76
5．Linux下驱动程序及装载.................................................................................81
五．CPLD扩展外部设备...............................................................................................88
1．扩展I/O.............................................................................................................88
2．扩展串口 16C554..............................................................................................94
六．PWM驱动蜂鸣器.................................................................................................109
1．驱动源码.........................................................................................................109
2．驱动测试程序.................................................................................................112
3．出现过的问题.................................................................................................112
七．485 网络驱动........................................................................................................113
1．硬件测试.........................................................................................................113
2．Linux驱动程序...............................................................................................118
3．驱动测试程序.................................................................................................121
4．出现的问题.....................................................................................................123
八．红外学习与发射...................................................................................................125
1．硬件测试程序.................................................................................................125
2．Linux驱动程序...............................................................................................130
3．驱动测试程序.................................................................................................135
4．出现的问题.....................................................................................................137
5．总结.................................................................................................................137
九．网络编程...............................................................................................................137
1．常用函数.........................................................................................................137
2．服务器程序.....................................................................................................146
3．测试用客户程序.............................................................................................151
4．利用IO复用替代多进程的并发服务器.........................................................152
5．用无线网络测试上述程序.............................................................................155
十．系统时间的实现...................................................................................................155
十一．关于进程的体会...............................................................................................156
1．进程间不共享变量.........................................................................................156
2．进程通信——信号的使用.............................................................................157
3．防止僵死进程.................................................................................................159
第四阶段 用户图形界面设计.............................................................................................159
一．QT应用编程 .........................................................................................................159
二．Qt/Embedded和QTOPIA......................................................................................159
1．Linuette平台.................................................................................................159
2．QTE 2.3.7 / Qtopia 1.7.0.........................................................................162
3. QTE 2.3.12 / Qtopia PDA 2.2.0...............................................................168
4．linuette的root、root_english、usr比较..........................................................172
后记.......................................................................................................................................174