📄 lcd12232.lst
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C51 COMPILER V7.02a LCD12232 08/28/2008 16:22:31 PAGE 1
C51 COMPILER V7.02a, COMPILATION OF MODULE LCD12232
OBJECT MODULE PLACED IN lcd12232.OBJ
COMPILER INVOKED BY: E:\Program Files\Keil\C51\BIN\C51.EXE lcd12232.c BROWSE DEBUG OBJECTEXTEND
stmt level source
1 #include <reg51.h>
2 #include <intrins.h>
3 //#include <at89x51.h>
4
5 sbit LCD_RS=P1^0;//定义引脚
6 sbit LCD_RW=P1^1;
7 sbit LCD_E=P1^2;
8 #define LCD_Data P2
9 #define Busy 0x80 //用于检测LCD状态字中的Busy标识
10
11
12
13 void WriteDataLCD(unsigned char WDLCD);
14 void WriteCommandLCD(unsigned char WCLCD,BuysC);
15 unsigned char ReadDataLCD(void);
16 unsigned char ReadStatusLCD(void);
17 void LCDInit(void);
18 void LCDClear(void);
19 void LCDFlash(void);
20 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);
21 void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData);
22 void Delay5Ms(void);
23 void Delay400Ms(void);
24
25
26 code unsigned char uctech[] = {"51单片机学习网"};
27 code unsigned char net[] = {"www.lydz8.com"};
28
29 void main(void)
30 {
31 1 Delay400Ms(); //启动等待，等LCD讲入工作状态
32 1 LCDInit(); //LCM初始化
33 1 Delay5Ms(); //延时片刻(可不要)
34 1 while(1){
35 2 LCDClear();
36 2 DisplayListChar(0, 0, uctech);
37 2 DisplayListChar(0, 5, net);
38 2 Delay400Ms();
39 2 Delay400Ms();
40 2 Delay400Ms();
41 2 Delay400Ms();
42 2 LCDFlash();
43 2 //}
44 2 }
45 1 }
46
47 //写数据
48 void WriteDataLCD(unsigned char WDLCD)
49 {
50 1 ReadStatusLCD(); //检测忙
51 1 LCD_RS = 1;
52 1 LCD_RW = 0;
53 1 LCD_Data = WDLCD;
54 1 LCD_E = 1;
55 1 LCD_E = 1;
C51 COMPILER V7.02a LCD12232 08/28/2008 16:22:31 PAGE 2
56 1 LCD_E = 1;
57 1 LCD_E = 0;
58 1 }
59
60 //写指令
61 void WriteCommandLCD(unsigned char WCLCD,BuysC) //BuysC为0时忽略忙检测
62 {
63 1 if (BuysC) ReadStatusLCD(); //根据需要检测忙
64 1 LCD_RS = 0;
65 1 LCD_RW = 0;
66 1 LCD_Data = WCLCD;
67 1 LCD_E = 1;
68 1 LCD_E = 1;
69 1 LCD_E = 1;
70 1 LCD_E = 0;
71 1 }
72
73 //读数据
74 unsigned char ReadDataLCD(void)
75 {
76 1 LCD_RS = 1;
77 1 LCD_RW = 1;
78 1 LCD_E = 0;
79 1 LCD_E = 0;
80 1 LCD_E = 1;
81 1 return(LCD_Data);
82 1 }
83
84 //读状态
85 unsigned char ReadStatusLCD(void)
86 {
87 1 LCD_Data = 0xFF;
88 1 LCD_RS = 0;
89 1 LCD_RW = 1;
90 1 LCD_E = 1;
91 1 while (LCD_Data & Busy); //检测忙信号
92 1 LCD_E = 0;
93 1 return(LCD_Data);
94 1 }
95
96 void LCDInit(void) //LCM初始化
97 {
98 1 WriteCommandLCD(0x30,1); //显示模式设置,开始要求每次检测忙信号
99 1 WriteCommandLCD(0x01,1); //显示清屏
100 1 WriteCommandLCD(0x06,1); // 显示光标移动设置
101 1 WriteCommandLCD(0x0C,1); // 显示开及光标设置
102 1 }
103 void LCDClear(void) //清屏
104 {
105 1 WriteCommandLCD(0x01,1); //显示清屏
106 1 WriteCommandLCD(0x34,1); // 显示光标移动设置
107 1 WriteCommandLCD(0x30,1); // 显示开及光标设置
108 1 }
109 void LCDFlash(void) //闪烁效果
110 {
111 1 WriteCommandLCD(0x08,1); //显示清屏
112 1 Delay400Ms();
113 1 WriteCommandLCD(0x0c,1); // 显示开及光标设置
114 1 Delay400Ms();
115 1 WriteCommandLCD(0x08,1); //显示清屏
116 1 Delay400Ms();
117 1 WriteCommandLCD(0x0c,1); // 显示开及光标设置
C51 COMPILER V7.02a LCD12232 08/28/2008 16:22:31 PAGE 3
118 1 Delay400Ms();
119 1 WriteCommandLCD(0x08,1); //显示清屏
120 1 Delay400Ms();
121 1 }
122 //按指定位置显示一个字符
123 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
124 {
125 1 Y &= 0x1;
126 1 X &= 0xF; //限制X不能大于15，Y不能大于1
127 1 if (Y) X |= 0x10; //当要显示第二行时地址码+0x10;
128 1 X |= 0x80; // 算出指令码
129 1 WriteCommandLCD(X, 0); //这里不检测忙信号，发送地址码
130 1 WriteDataLCD(DData);
131 1 }
132
133 //按指定位置显示一串字符
134 void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
135 {
136 1 unsigned char ListLength,X2;
137 1 ListLength = 0;
138 1 X2=X;
139 1 Y &= 0x01;
140 1 X &= 0x0F; //限制X不能大于15，Y不能大于1
141 1 if (Y) X2 |= 0x10; //当要显示第二行时地址码+0x10;
142 1 X2 |= 0x80; // 算出指令码
143 1 WriteCommandLCD(X2, 1); //这里不检测忙信号，发送地址码
144 1 while (DData[ListLength]>=0x20) //若到达字串尾则退出
145 1 {
146 2 if (X <= 0x0F) //X坐标应小于0xF
147 2 {
148 3 WriteDataLCD(DData[ListLength]); //
149 3 ListLength++;
150 3 X++;
151 3 Delay5Ms();
152 3 }
153 2 }
154 1 }
155
156 //5ms延时
157 void Delay5Ms(void)
158 {
159 1 unsigned int TempCyc = 5552;
160 1 while(TempCyc--);
161 1 }
162
163 //400ms延时
164 void Delay400Ms(void)
165 {
166 1 unsigned char TempCycA = 5;
167 1 unsigned int TempCycB;
168 1 while(TempCycA--)
169 1 {
170 2 TempCycB=7269;
171 2 while(TempCycB--);
172 2 };
173 1 }
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 377 ----
CONSTANT SIZE = 29 ----
XDATA SIZE = ---- ----
C51 COMPILER V7.02a LCD12232 08/28/2008 16:22:31 PAGE 4
PDATA SIZE = ---- ----
DATA SIZE = ---- 7
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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