1.1 嵌入式系统简介 ................................................................................................1
1.1.1 嵌入式系统的定义和特点
........................................................................1
1.1.2 嵌入式系统的发展和趋势
........................................................................2
1.2 嵌入式处理器概述 ............................................................................................3
1.2.1 嵌入式处理器的分类
................................................................................3
1.2.2 ARM 处理器简介
.........................................................................................5
1.3 本文主要研究的问题背景和内容 ....................................................................7
1.3.1 本文主要研究的问题背景
........................................................................7
1.3.2 本文主要内容描述和安排
........................................................................8
第二章 嵌入式系统总体设计......................................................................................9
2.1 嵌入式系统设计方法讨论 ................................................................................9
2.2 开发平台的功能需求分析 ..............................................................................10
2.3 开发平台软硬件的选择 ..................................................................................12
2.3.1 系统硬件平台的选择
..............................................................................13
2.3.1.1 嵌入式 ARM 处理器的选型......................................................................13
2.3.1.2 LPC2136 芯片简介...................................................................................15
2.3.1.3 片外外围设备的选择..............................................................................16
2.3.2 系统软件的选择
......................................................................................17
2.3.2.1 实时操作系统的选型原则......................................................................18
2.3.2.2 几种开源的嵌入式操作系统的比较......................................................20
2.3.2.3 µC/OS-II 的特点.....................................................................................24
2.4 开发平台方案总体规划 ..................................................................................25
2.4.1 硬件规划
..................................................................................................25
2.4.2 软件规划
..................................................................................................27
第三章 嵌入式系统硬件详细设计............................................................................29
3.1 LPC2136 芯片结构...........................................................................................29
3.1.1 LPC2136 功能模块
...................................................................................29
3.1.2 LPC2136 管脚配置
...................................................................................30
3.2 硬件原理 ..........................................................................................................30
3.2.1 电源电路
..................................................................................................30
3.2.2 复位电路
..................................................................................................31
3.2.3 系统时钟电路
..........................................................................................32
3.2.4 JTAG 接口电路
.........................................................................................33
3.2.5 串口及 MODEM 接口电路
..........................................................................33
3.2.6 按键电路
..................................................................................................34
3.2.7 LED 显示电路
...........................................................................................35
3.2.8 蜂鸣器控制电路
......................................................................................37
3.2.9 I
2
C 电路
....................................................................................................38
3.2.10 直流电压测量电路
................................................................................38
3.2.11 DAC 电路
.................................................................................................39
3.2.12 RTC 电路
.................................................................................................40
3.2.13 USB 电路
.................................................................................................40
第四章 软件系统的基础构建与设计........................................................................42
