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C51 COMPILER V6.12 1 09/10/2007 23:26:11 PAGE 1
C51 COMPILER V6.12, COMPILATION OF MODULE 1
OBJECT MODULE PLACED IN .\1.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE .\1.C DEBUG OBJECTEXTEND
stmt level source
1 #include <at89x51.h>
2 #include "scancodes.h"
3
4 #define LCM_RW P2_6 //定义LCD引脚
5 #define LCM_RS P2_7
6 #define LCM_E P2_5
7 #define LCM_Data P1
8
9 #define Key_Data P3_4 //定义Keyboard引脚
10 #define Key_CLK P3_3
11
12 #define Busy 0x80 //用于检测LCM状态字中的Busy标识
13
14 void LCMInit(void);
15 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);
16 void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData);
17 void Delay5Ms(void);
18 void Delay400Ms(void);
19 void Decode(unsigned char ScanCode);
20 void WriteDataLCM(unsigned char WDLCM);
21 void WriteCommandLCM(unsigned char WCLCM,BuysC);
22
23 unsigned char ReadDataLCM(void);
24 unsigned char ReadStatusLCM(void);
25 unsigned char code cdle_net[] = {"-www.cdle.net--"};
26 unsigned char code email[] = {"pnzwzw@cdle.net"};
27 unsigned char code Cls[] = {" "};
28 static unsigned char IntNum = 0; //中断次数计数
29 static unsigned char KeyV; //键值
30 static unsigned char DisNum = 0; //显示用指针
31 static unsigned char Key_UP=0, Shift = 0;//Key_UP是键松开标识，Shift是Shift键按下标识
32 static unsigned char BF = 0; //标识是否有字符被收到
33 unsigned char th,tl;
34 int n=0;
35
36 void main(void)
37 {
38 1 unsigned char TempCyc;
39 1
40 1 Delay400Ms(); //启动等待，等LCM讲入工作状态
41 1 LCMInit(); //LCM初始化
42 1 Delay5Ms(); //延时片刻(可不要)
43 1
44 1 DisplayListChar(0, 0, cdle_net);
45 1 DisplayListChar(0, 1, email);
46 1 ReadDataLCM();//测试用句无意义
47 1 for (TempCyc=0; TempCyc<10; TempCyc++)
48 1 Delay400Ms(); //延时
49 1 DisplayListChar(0, 1, Cls);
50 1 aaa:
51 1 P2_0=0;
52 1 TMOD=0x10;
53 1 ET1=1;
54 1
55 1 IT1 = 0; //设外部中断1为低电平触发
C51 COMPILER V6.12 1 09/10/2007 23:26:11 PAGE 2
56 1 EA = 1;
57 1 EX1 = 1; //开中断
58 1 PT1=1;
59 1
60 1 do
61 1 {
62 2 if (BF)
63 2 Decode(KeyV);
64 2 else
65 2 {
66 3
67 3 EX1= 1; //开中断
68 3 }
69 2 }
70 1 while(1);
71 1 goto aaa;
72 1 }
73
74 //写数据
75 void WriteDataLCM(unsigned char WDLCM)
76 {
77 1 ReadStatusLCM(); //检测忙
78 1 LCM_Data = WDLCM;
79 1 LCM_RS = 1;
80 1 LCM_RW = 0;
81 1 LCM_E = 0; //若晶振速度太高可以在这后加小的延时
82 1 LCM_E = 0; //延时
83 1 LCM_E = 1;
84 1 }
85
86 //写指令
87 void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测
88 {
89 1 if (BuysC) ReadStatusLCM(); //根据需要检测忙
90 1 LCM_Data = WCLCM;
91 1 LCM_RS = 0;
92 1 LCM_RW = 0;
93 1 LCM_E = 0;
94 1 LCM_E = 0;
95 1 LCM_E = 1;
96 1 }
97
98 //读数据
99 unsigned char ReadDataLCM(void)
100 {
101 1 LCM_RS = 1;
102 1 LCM_RW = 1;
103 1 LCM_E = 0;
104 1 LCM_E = 0;
105 1 LCM_E = 1;
106 1 return(LCM_Data);
107 1 }
108
109 //读状态
110 unsigned char ReadStatusLCM(void)
111 {
112 1 LCM_Data = 0xFF;
113 1 LCM_RS = 0;
114 1 LCM_RW = 1;
115 1 LCM_E = 0;
116 1 LCM_E = 0;
117 1 LCM_E = 1;
C51 COMPILER V6.12 1 09/10/2007 23:26:11 PAGE 3
118 1 while (LCM_Data & Busy); //检测忙信号
119 1 return(LCM_Data);
120 1 }
121
122 void LCMInit(void) //LCM初始化
123 {
124 1 LCM_Data = 0;
125 1 WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号
126 1 Delay5Ms();
127 1 WriteCommandLCM(0x38,0);
128 1 Delay5Ms();
129 1 WriteCommandLCM(0x38,0);
130 1 Delay5Ms();
131 1
132 1 WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号
133 1 WriteCommandLCM(0x08,1); //关闭显示
134 1 WriteCommandLCM(0x01,1); //显示清屏
135 1 WriteCommandLCM(0x06,1); // 显示光标移动设置
136 1 WriteCommandLCM(0x0F,1); // 显示开及光标设置
137 1 }
138
139 //按指定位置显示一个字符
140 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
141 {
142 1 Y &= 0x1;
143 1 X &= 0xF; //限制X不能大于15，Y不能大于1
144 1 if (Y) X |= 0x40; //当要显示第二行时地址码+0x40;
145 1 X |= 0x80; //算出指令码
146 1 WriteCommandLCM(X, 1); //发命令字
147 1 WriteDataLCM(DData); //发数据
148 1 }
149
150 //按指定位置显示一串字符
151 void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
152 {
153 1 unsigned char ListLength;
154 1
155 1 ListLength = 0;
156 1 Y &= 0x1;
157 1 X &= 0xF; //限制X不能大于15，Y不能大于1
158 1 while (DData[ListLength]>0x19) //若到达字串尾则退出
159 1 {
160 2 if (X <= 0xF) //X坐标应小于0xF
161 2 {
162 3 DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符
163 3 ListLength++;
164 3 X++;
165 3 }
166 2 }
167 1 }
168
169 //5ms延时
170 void Delay5Ms(void)
171 {
172 1 unsigned int TempCyc = 5552;
173 1 while(TempCyc--);
174 1 }
175
176 //400ms延时
177 void Delay400Ms(void)
178 {
179 1 unsigned char TempCycA = 5;
C51 COMPILER V6.12 1 09/10/2007 23:26:11 PAGE 4
180 1 unsigned int TempCycB;
181 1 while(TempCycA--)
182 1 {
183 2 TempCycB=7269;
184 2 while(TempCycB--);
185 2 };
186 1 }
187
188 void timer1(void) interrupt 3 using 0
189 {
190 1 P2_0=!P2_0;
191 1 TH1=th;
192 1 TL1=tl;
193 1 n++;
194 1 if(n>500)TR1=0;
195 1 }
196
197 void Keyboard_out(void) interrupt 2
198 {
199 1 if ((IntNum > 0) && (IntNum < 9))
200 1 {
201 2 KeyV = KeyV >> 1; //因键盘数据是低>>高，结合上一句所以右移一位
202 2 if (Key_Data) KeyV = KeyV | 0x80; //当键盘数据线为1时为1到最高位
203 2 }
204 1 IntNum++;
205 1 while (!Key_CLK); //等待PS/2CLK拉高
206 1
207 1 if (IntNum > 10)
208 1 {
209 2 IntNum = 0; //当中断11次后表示一帧数据收完，清变量准备下一次接收
210 2 BF = 1; //标识有字符输入完了
211 2 EX1 = 0; //关中断等显示完后再开中断 (注：如这里不用BF和关中断直接调Decode()则所Decode中所调用的所有函数要⌨️ 快捷键说明
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