?? keyboard.lst
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C51 COMPILER V6.23a KEYBOARD 09/08/2003 17:00:29 PAGE 1
C51 COMPILER V6.23a, COMPILATION OF MODULE KEYBOARD
NO OBJECT MODULE REQUESTED
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE keyboard.c BROWSE DEBUG OBJECTEXTEND
stmt level source
1 #pragma SRC
2 #include <stdio.h>
3 #include <reg51.h>
4
5
6 #define TRUE 1
7 #define FALSE 0
8
9 #define DELAY_VALUE 3
10
11
12
13
14 #define PinDrvKey1 P1_0
15 #define PinDrvKey2 P1_1
16 #define PinDrvKey3 P1_2
17 #define PinDrvKey4 P1_3 //鍵盤掃描的驅動線
18
19
20 #define PinScanKey1 P1_4
21 #define PinScanKey2 P1_5
22 #define PinScanKey3 P1_6
23 #define PinScanKey4 P1_7 //鍵盤掃描的信號獲取線
24
25 #define PinLamp P0_0 //指示燈驅動管腳
26 #define PinSpeaker P0_1 //蜂鳴器驅動管腳
27
28 sbit P0_0=P0^0;
29 sbit P0_1=P0^1;
30 sbit P0_2=P0^2;
31 sbit P0_3=P0^3;
32 sbit P0_4=P0^4;
33 sbit P0_5=P0^5;
34 sbit P0_6=P0^6;
35 sbit P0_7=P0^7;
36
37 sbit P1_0=P1^0;
38 sbit P1_1=P1^1;
39 sbit P1_2=P1^2;
40 sbit P1_3=P1^3;
41 sbit P1_4=P1^4;
42 sbit P1_5=P1^5;
43 sbit P1_6=P1^6;
44 sbit P1_7=P1^7;
45
46 sbit P2_0=P2^0;
47 sbit P2_1=P2^1;
48 sbit P2_2=P2^2;
49 sbit P2_3=P2^3;
50 sbit P2_4=P2^4;
51 sbit P2_5=P2^5;
52 sbit P2_6=P2^6;
53 sbit P2_7=P2^7;
54
55
C51 COMPILER V6.23a KEYBOARD 09/08/2003 17:00:29 PAGE 2
56 void initial(void); //初始化子程序
57 void delay(short i);
58 unsigned char keyscan(void);
59
60 void main(void)
61 {
62 1
63 1 unsigned char keyword;
64 1
65 1 initial(); //鍵盤驅動信號都設為低
66 1
67 1 keyword=keyscan();
68 1
69 1 }
70
71 void initial(void)
72 {
73 1 P1_0=FALSE;
74 1 P1_1=FALSE;
75 1 P1_2=FALSE;
76 1 P1_3=FALSE; //鍵盤驅動信號都設為低
77 1 P0_0=TRUE; //發(fā)光二極管設為不亮
78 1 P0_1=TRUE; //蜂鳴器不叫
79 1 }
80
81 unsigned char keyscan()
82 {
83 1 PinDrvKey1=TRUE;
84 1 if(PinScanKey1==TRUE)
85 1 PinLamp=FALSE;
86 1 PinSpeaker=FALSE;
87 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
88 1 PinLamp=TRUE;
89 1 PinSpeaker=TRUE;
90 1 if(PinScanKey1==TRUE)
91 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
92 2 if(PinScanKey1==TRUE)
93 2 return 1;} //確認確實有按鍵信號，返回鍵值
94 1 if(PinScanKey2==TRUE)
95 1 PinLamp=FALSE;
96 1 PinSpeaker=FALSE;
97 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
98 1 PinLamp=TRUE;
99 1 PinSpeaker=TRUE;
100 1 if(PinScanKey2==TRUE)
101 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
102 2 if(PinScanKey2==TRUE)
103 2 return 5;} //確認確實有按鍵信號，返回鍵值
104 1 if(PinScanKey3==TRUE)
105 1 PinLamp=FALSE;
106 1 PinSpeaker=FALSE;
107 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
108 1 PinLamp=TRUE;
109 1 PinSpeaker=TRUE;
110 1 if(PinScanKey3==TRUE)
111 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
112 2 if(PinScanKey3==TRUE)
113 2 return 9;} //確認確實有按鍵信號，返回鍵值
114 1 if(PinScanKey4==TRUE)
115 1 PinLamp=FALSE;
116 1 PinSpeaker=FALSE;
117 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
C51 COMPILER V6.23a KEYBOARD 09/08/2003 17:00:29 PAGE 3
118 1 PinLamp=TRUE;
119 1 PinSpeaker=TRUE;
120 1 if(PinScanKey2==TRUE)
121 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
122 2 if(PinScanKey2==TRUE)
123 2 return 12;} //確認確實有按鍵信號，返回鍵值
124 1 PinDrvKey1=FALSE; //以上語句掃描第一列
125 1 PinDrvKey2=TRUE;
126 1 if(PinScanKey1==TRUE)
127 1 PinLamp=FALSE;
128 1 PinSpeaker=FALSE;
129 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
130 1 PinLamp=TRUE;
131 1 PinSpeaker=TRUE;
132 1 if(PinScanKey1==TRUE)
133 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
134 2 if(PinScanKey1==TRUE)
135 2 return 2;} //確認確實有按鍵信號，返回鍵值
136 1 if(PinScanKey2==TRUE)
137 1 PinLamp=FALSE;
138 1 PinSpeaker=FALSE;
139 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
140 1 PinLamp=TRUE;
141 1 PinSpeaker=TRUE;
142 1 if(PinScanKey2==TRUE)
143 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
144 2 if(PinScanKey2==TRUE)
145 2 return 6;} //確認確實有按鍵信號，返回鍵值
146 1 if(PinScanKey3==TRUE)
147 1 PinLamp=FALSE;
148 1 PinSpeaker=FALSE;
149 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
150 1 PinLamp=TRUE;
151 1 PinSpeaker=TRUE;
152 1 if(PinScanKey3==TRUE)
153 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
154 2 if(PinScanKey3==TRUE)
155 2 return 0;} //確認確實有按鍵信號，返回鍵值
156 1 if(PinScanKey4==TRUE)
157 1 PinLamp=FALSE;
158 1 PinSpeaker=FALSE;
159 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
160 1 PinLamp=TRUE;
161 1 PinSpeaker=TRUE;
162 1 if(PinScanKey4==TRUE)
163 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
164 2 if(PinScanKey4==TRUE)
165 2 return 13;} //確認確實有按鍵信號，返回鍵值
166 1 PinDrvKey2=FALSE; //以上語句掃描第二列
167 1 PinDrvKey3=TRUE;
168 1 if(PinScanKey1==TRUE)
169 1 PinLamp=FALSE;
170 1 PinSpeaker=FALSE;
171 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
172 1 PinLamp=TRUE;
173 1 PinSpeaker=TRUE;
174 1 if(PinScanKey1==TRUE)
175 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
176 2 if(PinScanKey1==TRUE)
177 2 return 3;} //確認確實有按鍵信號，返回鍵值
178 1 if(PinScanKey2==TRUE)
179 1 PinLamp=FALSE;
C51 COMPILER V6.23a KEYBOARD 09/08/2003 17:00:29 PAGE 4
180 1 PinSpeaker=FALSE;
181 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
182 1 PinLamp=TRUE;
183 1 PinSpeaker=TRUE;
184 1 if(PinScanKey2==TRUE)
185 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
186 2 if(PinScanKey2==TRUE)
187 2 return 7;} //確認確實有按鍵信號，返回鍵值
188 1 if(PinScanKey3==TRUE)
189 1 PinLamp=FALSE;
190 1 PinSpeaker=FALSE;
191 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
192 1 PinLamp=TRUE;
193 1 PinSpeaker=TRUE;
194 1 if(PinScanKey3==TRUE)
195 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
196 2 if(PinScanKey3==TRUE)
197 2 return 10;} //確認確實有按鍵信號，返回鍵值
198 1 if(PinScanKey4==TRUE)
199 1 PinLamp=FALSE;
200 1 PinSpeaker=FALSE;
201 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
202 1 PinLamp=TRUE;
203 1 PinSpeaker=TRUE;
204 1 if(PinScanKey4==TRUE)
205 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
206 2 if(PinScanKey4==TRUE)
207 2 return 14;} //確認確實有按鍵信號，返回鍵值
208 1 PinDrvKey3=FALSE; //以上語句掃描第三列
209 1 PinDrvKey4=TRUE;
210 1 if(PinScanKey4==TRUE)
211 1 PinLamp=FALSE;
212 1 PinSpeaker=FALSE;
213 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
214 1 PinLamp=TRUE;
215 1 PinSpeaker=TRUE;
216 1 if(PinScanKey1==TRUE)
217 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
218 2 if(PinScanKey1==TRUE)
219 2 return 4;} //確認確實有按鍵信號，返回鍵值
220 1 if(PinScanKey2==TRUE)
221 1 PinLamp=FALSE;
222 1 PinSpeaker=FALSE;
223 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
224 1 PinLamp=TRUE;
225 1 PinSpeaker=TRUE;
226 1 if(PinScanKey2==TRUE)
227 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
228 2 if(PinScanKey2==TRUE)
229 2 return 8;} //確認確實有按鍵信號，返回鍵值
230 1 if(PinScanKey3==TRUE)
231 1 PinLamp=FALSE;
232 1 PinSpeaker=FALSE;
233 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
234 1 PinLamp=TRUE;
235 1 PinSpeaker=TRUE;
236 1 if(PinScanKey3==TRUE)
237 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
238 2 if(PinScanKey3==TRUE)
239 2 return 11;} //確認確實有按鍵信號，返回鍵值
240 1 if(PinScanKey4==TRUE)
241 1 PinLamp=FALSE;
C51 COMPILER V6.23a KEYBOARD 09/08/2003 17:00:29 PAGE 5
242 1 PinSpeaker=FALSE;
243 1 delay(DELAY_VALUE); //如果判斷有信號，則延時一次
244 1 PinLamp=TRUE;
245 1 PinSpeaker=TRUE;
246 1 if(PinScanKey4==TRUE)
247 1 { delay(DELAY_VALUE); //假如判斷還有信號，則再延時
248 2 if(PinScanKey4==TRUE)
249 2 return 15;} //假如判斷還有信號，則再延時
250 1 PinDrvKey3=FALSE; //以上語句掃描第四列
251 1 return 16;
252 1 }
253
254
255 void delay(short i)
256 {
257 1 int j=0;
258 1 int k=0;
259 1 k=i*DELAY_VALUE;
260 1 while (j<k)j++;
261 1 }
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 465 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- 1
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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