📄 ps2kbtest.lst
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C51 COMPILER V8.18 PS2KBTEST 01/04/2010 16:32:17 PAGE 1
C51 COMPILER V8.18, COMPILATION OF MODULE PS2KBTEST
OBJECT MODULE PLACED IN PS2KBTEST.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE PS2KBTEST.C BROWSE DEBUG OBJECTEXTEND
line level source
1 #include <at89x51.h>
2 #include "KBCODE.H"
3 #define LCM_RS P2_0
4 #define LCM_RW P2_1 //定义LCD引脚
5 #define LCM_E P2_2
6 #define LCM_Data P0
7 #define Busy 0x80 //用于检测LCM状态字中的Busy标识
8 #define Key_Data P3_2 //定义Keyboard引脚
9 #define Key_CLK P3_3
10 void LCMInit(void);
11 void DisplayOneChar(unsigned char X,unsigned char Y,unsigned char DData);
12 void DisplayListChar(unsigned char X,unsigned char Y,unsigned char code *DData);
13 void Delay5Ms(void);
14 void Delay400Ms(void);
15 void Decode(unsigned char ScanCode);
16 void WriteDataLCM(unsigned char WDLCM);
17 void WriteCommandLCM(unsigned char WCLCM,BuysC);
18 unsigned char ReadStatusLCM(void);
19 unsigned char code cdle_net[] = {"RICHMCU PS2 TEST"};
20 unsigned char code email[] = {"WWW.RICHMCU.COM"};
21 unsigned char code Cls[] = {" "};
22 static unsigned char IntNum = 0; //中断次数计数
23 static unsigned char KeyV; //键值
24 static unsigned char DisNum = 0; //显示用指针
25 static unsigned char Key_UP=0, Shift = 0;//Key_UP是键松开标识，Shift是Shift键按下标识
26 static unsigned char BF = 0; //标识是否有字符被收到
27
28 void main(void)
29 {
30 1 unsigned char TempCyc;
31 1
32 1 Delay400Ms(); //启动等待，等LCM讲入工作状态
33 1 LCMInit(); //LCM初始化
34 1
35 1
36 1 DisplayListChar(0, 0, cdle_net);
37 1 DisplayListChar(0, 1, email);
38 1 for(TempCyc=0; TempCyc<10; TempCyc++) {
39 2 Delay400Ms(); //延时
40 2 }
41 1 DisplayListChar(0, 1, Cls);
42 1
43 1 IT1 = 0; //设外部中断1为低电平触发
44 1 EX1 = 1; //开中断
45 1 EA = 1;
46 1
47 1 while(1) {
48 2 if(BF)
49 2 Decode(KeyV);
50 2 else {
51 3 EA = 1; //开中断
52 3 }
53 2 }
54 1 }
55
C51 COMPILER V8.18 PS2KBTEST 01/04/2010 16:32:17 PAGE 2
56 //写数据
57 void WriteDataLCM(unsigned char WDLCM)
58 {
59 1 ReadStatusLCM(); //检测忙
60 1 LCM_Data = WDLCM;
61 1 LCM_RS = 1;
62 1 LCM_RW = 0;
63 1 LCM_E = 0; //若晶振速度太高可以在这后加小的延时
64 1 LCM_E = 0; //延时
65 1 LCM_E = 1;
66 1 }
67
68 //写指令
69 void WriteCommandLCM(unsigned char WCLCM,BuysC) //BuysC为0时忽略忙检测
70 {
71 1 if(BuysC) ReadStatusLCM(); //根据需要检测忙
72 1 LCM_Data = WCLCM;
73 1 LCM_RS = 0;
74 1 LCM_RW = 0;
75 1 LCM_E = 0;
76 1 LCM_E = 0;
77 1
78 1 LCM_E = 1;
79 1 }
80
81
82 //读状态
83 unsigned char ReadStatusLCM(void)
84 {
85 1 LCM_Data = 0xFF;
86 1 LCM_RS = 0;
87 1 LCM_RW = 1;
88 1 LCM_E = 0;
89 1 LCM_E = 1;
90 1 while(LCM_Data & Busy); //检测忙信号
91 1
92 1 return(LCM_Data);
93 1 }
94
95 void LCMInit(void) //LCM初始化
96 {
97 1 LCM_Data = 0;
98 1 WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号
99 1 Delay5Ms();
100 1 Delay5Ms();
101 1 WriteCommandLCM(0x38,0);
102 1 Delay5Ms();
103 1 Delay5Ms();
104 1 WriteCommandLCM(0x38,0);
105 1 Delay5Ms();
106 1 Delay5Ms();
107 1
108 1 WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号
109 1 WriteCommandLCM(0x08,1); //关闭显示
110 1 WriteCommandLCM(0x01,1); //显示清屏
111 1 WriteCommandLCM(0x06,1); // 显示光标移动设置
112 1 WriteCommandLCM(0x0F,1); // 显示开及光标设置
113 1 }
114
115 //按指定位置显示一个字符
116 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
117 {
C51 COMPILER V8.18 PS2KBTEST 01/04/2010 16:32:17 PAGE 3
118 1 Y &= 0x1;
119 1 X &= 0xF; //限制X不能大于15，Y不能大于1
120 1 if(Y)
121 1 X |= 0x40; //当要显示第二行时地址码+0x40;
122 1 X |= 0x80; //算出指令码
123 1 WriteCommandLCM(X, 1); //发命令字
124 1 WriteDataLCM(DData); //发数据
125 1 }
126
127 //按指定位置显示一串字符
128 void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)
129 {
130 1 unsigned char ListLength;
131 1
132 1 ListLength = 0;
133 1 Y &= 0x1;
134 1 X &= 0xF; //限制X不能大于15，Y不能大于1
135 1 while (DData[ListLength]>0x19) {//若到达字串尾则退出
136 2 if(X <= 0xF) {//X坐标应小于0xF
137 3 DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符
138 3 ListLength++;
139 3 X++;
140 3 }
141 2 }
142 1 }
143
144 //5ms延时
145 void Delay5Ms(void)
146 {
147 1 unsigned int TempCyc = 5552;
148 1 while(TempCyc--)
149 1 ;
150 1 }
151
152 //400ms延时
153 void Delay400Ms(void)
154 {
155 1 unsigned char TempCycA = 5;
156 1 unsigned int TempCycB;
157 1 while(TempCycA--) {
158 2 TempCycB=7269;
159 2 while(TempCycB--)
160 2 ;
161 2 }
162 1 }
163
164 void Keyboard_out(void) interrupt 2
165 {
166 1 if((IntNum > 0) && (IntNum < 9)) {
167 2 KeyV >>= 1; //因键盘数据是低>>高，结合上一句所以右移一位
168 2 if(Key_Data) {
169 3 KeyV |= 0x80; //当键盘数据线为1时为1到最高位
170 3 }
171 2 }
172 1 IntNum++;
173 1 while(!Key_CLK); //等待PS/2CLK拉高
174 1 if(IntNum > 10) {
175 2 IntNum = 0; //当中断10次后表示一帧数据收完，清变量准备下一次接收
176 2 BF = 1; //标识有字符输入完了
177 2 EA = 0; //关中断等显示完后再开中断
178 2 }
179 1 }
C51 COMPILER V8.18 PS2KBTEST 01/04/2010 16:32:17 PAGE 4
180 void Decode(unsigned char ScanCode) //注意:如SHIFT+G为12H 34H F0H 34H F0H 12H，也就是说shift的通码+G的通码
-+shift的断码+G的断码
181 {
182 1 unsigned char TempCyc;
183 1
184 1 if(!Key_UP) { //当键盘松开时
185 2 switch(ScanCode) {
186 3 case 0xF0 : //当收到0xF0，Key_UP置1表示断码开始
187 3 Key_UP = 1;
188 3 break;
189 3 case 0x12: // 左 SHIFT
190 3 Shift = 1;
191 3 break;
192 3 case 0x59: // 右 SHIFT
193 3 Shift = 1;
194 3 break;
195 3 default:
196 3 if(DisNum > 15) {
197 4 DisplayListChar(0,1,Cls); //清LCD第二行
198 4 DisNum = 0;
199 4 }
200 3 if(Shift == 1) { //如果按下SHIFT
201 4 for(TempCyc = 0;(Shifted[TempCyc][0]!=ScanCode)&&(TempCyc<59); TempCyc++); //查表显示
202 4 if(Shifted[TempCyc][0] == ScanCode) {
203 5 DisplayOneChar(DisNum,1,Shifted[TempCyc][1]);
204 5 }
205 4 DisNum++;
206 4 }
207 3 else { //没有按下SHIFT
208 4 for(TempCyc = 0; (UnShifted[TempCyc][0]!=ScanCode)&&(TempCyc<59);TempCyc++); //查表显示
209 4 if(UnShifted[TempCyc][0] == ScanCode) {
210 5 DisplayOneChar(DisNum,1,UnShifted[TempCyc][1]);
211 5 }
212 4 DisNum++;
213 4 }
214 3 break;
215 3 }
216 2 }
217 1 else {
218 2 Key_UP = 0;
219 2 switch(ScanCode) { //当键松开时不处理判码，如G 34H F0H 34H 那么第二个34H不会被处理
220 3 case 0x12: // 左 SHIFT
221 3 Shift = 0;
222 3 break;
223 3 case 0x59: // 右 SHIFT
224 3 Shift = 0;
225 3 break;
226 3 default:
227 3 break;
228 3 }
229 2 }
230 1 BF = 0; //标识字符处理完了
231 1 }
232
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 590 ----
CONSTANT SIZE = 294 ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = 6 11
C51 COMPILER V8.18 PS2KBTEST 01/04/2010 16:32:17 PAGE 5
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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