📄 keyboard.lst
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C51 COMPILER V8.12 KEYBOARD 11/13/2008 16:49:26 PAGE 1
C51 COMPILER V8.12, COMPILATION OF MODULE KEYBOARD
OBJECT MODULE PLACED IN keyboard.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE keyboard.c BROWSE DEBUG OBJECTEXTEND
line level source
1 #include <at89x52.H>
2 #include <intrins.h>
3 #include "keyboard.h"
4 #define key_port P3
5 unsigned char code keynum[]={0x01,0X7E,0X7D,0X7B,0X77,0XBE,0XBD,0XBB,0XB7,0XDE,0xDD,0XDB,0XD7,0XEE,0XED,0X
-EB,0XE7}; //键盘对应
6 void delay(unsigned int k)
7 {
8 1 unsigned int i,j;
9 1 for(i=0;i<k;i++){
10 2 for(j=0;j<121;j++)
11 2 {;}}
12 1 }
13 unsigned char scan()
14 {
15 1 unsigned char temp=0xff,i;
16 1 key_port=0xf0;
17 1 if(key_port!=0xf0)
18 1 {
19 2 delay(10);
20 2 if(key_port!=0xf0)
21 2 {
22 3 temp=key_port;
23 3 key_port=0x0f;
24 3 temp=(temp&0xf0)|(key_port&0x0f);
25 3 while(key_port!=0x0f);
26 3 for(i=1;i<17;i++)
27 3 {
28 4 if(keynum[i]==temp)
29 4 break;
30 4 }
31 3 }
32 2 }
33 1 else
34 1 {return -1;}
35 1 return i;
36 1 }
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 103 ----
CONSTANT SIZE = 17 ----
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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