📄 lcd1206.lst
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C51 COMPILER V8.08 LCD1206 03/02/2008 13:56:09 PAGE 1
C51 COMPILER V8.08, COMPILATION OF MODULE LCD1206
OBJECT MODULE PLACED IN LCD1206.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE LCD1206.C BROWSE DEBUG OBJECTEXTEND
line level source
1 /*============================================================
2 使用1602液晶显示的实验例子 huangstone
3 ==============================================================
4
5
6 TS1620-1(16*2)模拟口线接线方式
7 连接线图:
8 ---------------------------------------------------
9 |LCM-----51 | LCM-----51 | LCM-----51 |
10 -------------------------------------------------------|
11 |DB0-----P0.0 | DB4-----P0.4 | RW-------P2.6 |
12 |DB1-----P0.1 | DB5-----P0.5 | RS--------P2.7 |
13 |DB2-----P0.2 | DB6-----P0.6 | E --------P2.5 |
14 |DB3-----P0.3 | DB7-----P0.7 | VLCD接1K2电阻到GND|
15 ---------------------------------------------------
16
17
18
19
20 [注:AT89S51使用12M晶振]
21 =============================================================*/
22 #include <REG51RD2.h>
23
24 #define LCM_RW P2_6 //定义引脚
25 #define LCM_RS P2_7
26 #define LCM_E P2_5
27 #define LCM_Data P0
28 #define Busy 0x80 //用于检测LCM状态字中的Busy标识
29
30
31
32 void WriteDataLCM(unsigned char WDLCM);
33 void WriteCommandLCM(unsigned char WCLCM,BuysC);
34 unsigned char ReadDataLCM(void);
35 unsigned char ReadStatusLCM(void);
36 void LCMInit(void);
37 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);
38 void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData);
39 void Delay5Ms(void);
40 void Delay400Ms(void);
41
42 unsigned char code cdle_net[] = {"www.haust.edu.cn" };
43
44 unsigned char code email[] = {"Hello-MCU"};
45
46 void main(void)
47 {
48 1 Delay400Ms(); //启动等待，等LCM讲入工作状态
49 1 LCMInit(); //LCM初始化
50 1 Delay5Ms(); //延时片刻(可不要)
51 1
52 1 DisplayListChar(0, 0, cdle_net);
53 1 DisplayListChar(0, 1, email);
54 1 ReadDataLCM();//测试用句无意义
55 1 while(1);
C51 COMPILER V8.08 LCD1206 03/02/2008 13:56:09 PAGE 2
56 1 }
57
58 //写数据
59 void WriteDataLCM(unsigned char WDLCM)
60 {
61 1 ReadStatusLCM(); //检测忙
62 1 LCM_Data = WDLCM;
63 1 LCM_RS = 1;
64 1 LCM_RW = 0;
65 1 LCM_E = 0; //若晶振速度太高可以在这后加小的延时
66 1 LCM_E = 0; //延时
67 1 LCM_E = 1;
68 1 }
69
70 //写指令
71 void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测
72 {
73 1 if (BuysC) ReadStatusLCM(); //根据需要检测忙
74 1 LCM_Data = WCLCM;
75 1 LCM_RS = 0;
76 1 LCM_RW = 0;
77 1 LCM_E = 0;
78 1 LCM_E = 0;
79 1 LCM_E = 1;
80 1 }
81
82 //读数据
83 unsigned char ReadDataLCM(void)
84 {
85 1 LCM_RS = 1;
86 1 LCM_RW = 1;
87 1 LCM_E = 0;
88 1 LCM_E = 0;
89 1 LCM_E = 1;
90 1 return(LCM_Data);
91 1 }
92
93 //读状态
94 unsigned char ReadStatusLCM(void)
95 {
96 1 LCM_Data = 0xFF;
97 1 LCM_RS = 0;
98 1 LCM_RW = 1;
99 1 LCM_E = 0;
100 1 LCM_E = 0;
101 1 LCM_E = 1;
102 1 while (LCM_Data & Busy); //检测忙信号
103 1 return(LCM_Data);
104 1 }
105
106 void LCMInit(void) //LCM初始化
107 {
108 1 LCM_Data = 0;
109 1 WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号
110 1 Delay5Ms();
111 1 WriteCommandLCM(0x38,0);
112 1 Delay5Ms();
113 1 WriteCommandLCM(0x38,0);
114 1 Delay5Ms();
115 1
116 1 WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号
117 1 WriteCommandLCM(0x08,1); //关闭显示
C51 COMPILER V8.08 LCD1206 03/02/2008 13:56:09 PAGE 3
118 1 WriteCommandLCM(0x01,1); //显示清屏
119 1 WriteCommandLCM(0x06,1); // 显示光标移动设置
120 1 WriteCommandLCM(0x0C,1); // 显示开及光标设置
121 1 }
122
123 //按指定位置显示一个字符
124 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
125 {
126 1 Y &= 0x1;
127 1 X &= 0xF; //限制X不能大于15，Y不能大于1
128 1 if (Y) X |= 0x40; //当要显示第二行时地址码+0x40;
129 1 X |= 0x80; //算出指令码
130 1 WriteCommandLCM(X, 0); //这里不检测忙信号，发送地址码
131 1 WriteDataLCM(DData);
132 1 }
133
134 //按指定位置显示一串字符
135 void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
136 {
137 1 unsigned char ListLength;
138 1
139 1 ListLength = 0;
140 1 Y &= 0x1;
141 1 X &= 0xF; //限制X不能大于15，Y不能大于1
142 1 while (DData[ListLength]>0x20) //若到达字串尾则退出
143 1 {
144 2 if (X <= 0xF) //X坐标应小于0xF
145 2 {
146 3 DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符
147 3 ListLength++;
148 3 X++;
149 3 }
150 2 }
151 1 }
152
153 //5ms延时
154 void Delay5Ms(void)
155 {
156 1 unsigned int TempCyc = 5552;
157 1 while(TempCyc--);
158 1 }
159
160 //400ms延时
161 void Delay400Ms(void)
162 {
163 1 unsigned char TempCycA = 5;
164 1 unsigned int TempCycB;
165 1 while(TempCycA--)
166 1 {
167 2 TempCycB=7269;
168 2 while(TempCycB--);
169 2 };
170 1 }
171
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 312 ----
CONSTANT SIZE = 27 ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- 8
C51 COMPILER V8.08 LCD1206 03/02/2008 13:56:09 PAGE 4
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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