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11.1 ADC 的引入 ........................................................................................................................ 79
11.1.1
什么是
ADC ...........................................................................................................80
11.1.2
为什么需要
ADC ................................................................................................... 80
11.1.3
关于模拟量和数字量
.............................................................................................. 80
11.1.4
有
AD
自然就有
DA ............................................................................................... 80
11.2 ADC 的主要相关概念 .........................................................................................................80
11.2.1
量程(模拟量输入范围)
.......................................................................................80
11.2.2
精度(分辨率
resolution
)
....................................................................................80
11.2.3
转换速率(
MSPS
与
conventor clock
的不同)
..................................................81
11.2.4
通道数
.................................................................................................................... 81
11.3 S5PV210 的 ADC 控制器 ................................................................................................... 81
11.3.1 ADC
和(电阻式)触摸屏的关系
..........................................................................81
11.3.2 ADC
的工作时钟框图
............................................................................................ 81
11.3.3 210
的
10
个
ADC
通道(注意
ADC
引脚和
GPIO
的区别)
................................81
11.3.4 ADC
控制器的主要寄存器
.....................................................................................81
11.4 AD 转换的编程实践 ............................................................................................................82
11.4.1 AD
控制器初始化
...................................................................................................82
11.4.2
循环进行
AD
采样
..................................................................................................82
11.4.3
编译运行调试
......................................................................................................... 82
11.4.5 start by read
模式介绍
......................................................................................... 82
11.4.6 DAC
的应用简介
................................................................................................... 82
十二、LCD 显示器 ....................................................................................................................82
12.1 LCD 简介 ............................................................................................................................. 82
12.1.1
什么是
LCD ............................................................................................................82
12.1.2
其他主流显示设备(
LED
、
CRT
、等离子、
OLED
)
.............................................. 82
12.1.3 LCD
的显示原理和特点
(
液晶分子透光
+
背光
) ....................................................... 83
12.1.4 LCD
的发展史和种类
(TN/STN/TFT) ........................................................................ 83
12.2 LCD 的接口技术 ..................................................................................................................83
12.2.1
从电平角度讲本质上都是
TTL
信号
......................................................................... 83