独立键盘和矩阵键盘中断和查询

1、独立键盘中断：#include<reg52.h>#define uchar unsigned char#define uint unsigned intsbit we = P27;sbit du = P26;sbit S2 = P30;sbit S3 = P31;sbit S4 = P32;sbit S5 = P33; uchar code leddata= 0x3F, /"0" 0x06, /"1" 0x5B, /"2" 0x4F, /"3" 0x66, /"4" 0x6D, /&

2、quot;5" 0x7D, /"6" 0x07, /"7" 0x7F, /"8" 0x6F, /"9" 0x77, /"A" 0x7C, /"B" 0x39, /"C" 0x5E, /"D" 0x79, /"E" 0x71, /"F" ;void delay(uint z)uint x,y;for(x = z; x > 0; x-)for(y = 114; y > 0 ; y

3、-);void delay1s(void)unsigned char a,b,c,d;for(a = 5; a > 0; a-)for(b = 4; b > 0; b-)for(c = 116; c > 0; c-)for(d = 214; d > 0; d-);void main ()TMOD = 0x01; /配置定时器0工作于方式一TH1 =(65536-50000)/256; /高八位装入初值TL1 = (65536-50000)%256; /低八位装入初值ET0 = 1; /开定时器0中断EA = 1; /开总中断TR0 = 1; /启动定时器0delay1s

4、();while(1)we = 1;/打开位选P0 = 0xfc;/八位数码管低两位we = 0;/锁存位选du = 1;/打开段选端P0 = leddata15;while(1)if(S2 = 0)delay(5);/软件消抖if(S2 = 0)P0 = leddata0;while( !S2 );/松手检测if(S3 = 0)delay(5);/软件消抖if(S3 = 0)P0 = leddata1;while( !S3 );/松手检测if(S4 = 0)delay(5);/软件消抖if(S4 = 0)P0 = leddata2;while( !S4 );/松手检测if(S5 = 0)de

5、lay(5);/软件消抖 if(S5 = 0)P0 = leddata3;while( !S5 );/松手检测void Timer0_int() interrupt 1 /重新装初值TH1 = (65536-50000)/256; /高八位装入初值TL1 = (65536-50000)%256; /低八位装入初值 矩阵键盘中断：#include<reg52.h>#define uchar unsigned char#define uint unsigned intsbit we = P27;sbit du = P26;uchar code leddata= 0x3F, /"

6、;0" 0x06, /"1" 0x5B, /"2" 0x4F, /"3" 0x66, /"4" 0x6D, /"5" 0x7D, /"6" 0x07, /"7" 0x7F, /"8" 0x6F, /"9" 0x77, /"A" 0x7C, /"B" 0x39, /"C" 0x5E, /"D" 0x79, /"E&quo

7、t; 0x71, /"F" ;void delay(uint z)uint x,y;for(x = z; x > 0; x-)for(y = 114; y > 0 ; y-);void delay1s(void)unsigned char a,b,c,d;for(a = 5; a > 0; a-)for(b = 4; b > 0; b-)for(c = 116; c > 0; c-)for(d = 214; d > 0; d-);uchar KeyScan()/带返回值的子函数uchar cord_l,cord_h;/声明列线和行线的值的

8、储存变量P3 = 0xf0;/1111 0000delay1s();if( (P3 & 0xf0) != 0xf0)/判断是否有按键按下delay(5);/软件消抖if( (P3 & 0xf0) != 0xf0)/判断是否有按键按下 cord_l = P3 & 0xf0;/ 储存列线值 P3 = cord_l | 0x0f; cord_h = P3 & 0x0f;/ 储存行线值 while( (P3 & 0x0f) != 0x0f );/松手检测 return (cord_l + cord_h);/返回键值码void KeyPro()switch( Ke

9、yScan() ) /第一行键值码case 0xee: P0 = leddata0;break;case 0xde: P0 = leddata1;break;case 0xbe: P0 = leddata2;break;case 0x7e: P0 = leddata3;break;/第二行键值码case 0xed: P0 = leddata4;break;case 0xdd: P0 = leddata5;break;case 0xbd: P0 = leddata6;break;case 0x7d: P0 = leddata7;break;/第三行键值码case 0xeb: P0 = ledda

10、ta8;break;case 0xdb: P0 = leddata9;break;case 0xbb: P0 = leddata10;break;case 0x7b: P0 = leddata11;break;/第四行键值码case 0xe7: P0 = leddata12;break;case 0xd7: P0 = leddata13;break;case 0xb7: P0 = leddata14;break;case 0x77: P0 = leddata15;break;void main ()TMOD = 0x01; /配置定时器0工作于方式一TH1 =(65536-50000)/256

11、; /高八位装入初值TL1 = (65536-50000)%256; /低八位装入初值ET0 = 1; /开定时器0中断EA = 1; /开总中断TR0 = 1; /启动定时器0while(1)we = 1;/打开位选P0 = 0xfc;/八位数码管低两位we = 0;/锁存位选du = 1;/打开段选端P0 = leddata0;while(1)KeyPro();/提取键值码并且送不同数值给数码管显示void Timer0_int() interrupt 1 /重新装初值TH1 = (65536-50000)/256; /高八位装入初值TL1 = (65536-50000)%256; /低八

12、位装入初值 矩阵查询#include <reg52.h>#define uchar unsigned char#define uint unsigned intsbit we = P27;sbit du = P26;uchar code leddata= 0x3F, /"0" 0x06, /"1" 0x5B, /"2" 0x4F, /"3" 0x66, /"4" 0x6D, /"5" 0x7D, /"6" 0x07, /"7"

13、; 0x7F, /"8" 0x6F, /"9" 0x77, /"A" 0x7C, /"B" 0x39, /"C" 0x5E, /"D" 0x79, /"E" 0x71, /"F" 0x76, /"H" 0x38, /"L" 0x37, /"n" 0x3E, /"u" 0x73, /"P" 0x5C, /"o" 0x40

14、, /"-" 0x00, /熄灭 0x00 /自定义 ;void delay10ms(void)unsigned char i,j,k;for(i = 5; j > 0; i-)for(j = 4; j > 0; j-)for(k = 248; k > 0; k-);void delay1s(void)unsigned char a,b,c,d;for(a = 5; a > 0; a-)for(b = 4; b > 0; b-)for(c = 116; c > 0; c-)for(d = 214; d > 0; d-);uchar

15、KeyScan()/带返回值的子函数unsigned char p;uchar cord_l,cord_h;/声明列线和行线的值的储存变量P3 = 0xf0;/1111 0000delay1s();if( (P3 & 0xf0) != 0xf0)/判断是否有按键按下delay10ms();/软件消抖if( (P3 & 0xf0) != 0xf0)/判断是否有按键按下 cord_l = P3 & 0xf0;/ 储存列线值 P3 = cord_l | 0x0f; cord_h = P3 & 0x0f;/ 储存行线值 while( (P3 & 0x0f) !=

16、 0x0f );/松手检测 return (cord_l + cord_h);/返回键值码void KeyPro()switch( KeyScan() ) /第一行键值码case 0xee: P0 = leddata0;break;case 0xde: P0 = leddata1;break;case 0xbe: P0 = leddata2;break;case 0x7e: P0 = leddata3;break;/第二行键值码case 0xed: P0 = leddata4;break;case 0xdd: P0 = leddata5;break;case 0xbd: P0 = leddat

17、a6;break;case 0x7d: P0 = leddata7;break;/第三行键值码case 0xeb: P0 = leddata8;break;case 0xdb: P0 = leddata9;break;case 0xbb: P0 = leddata10;break;case 0x7b: P0 = leddata11;break;/第四行键值码case 0xe7: P0 = leddata12;break;case 0xd7: P0 = leddata13;break;case 0xb7: P0 = leddata14;break;case 0x77: P0 = leddata1

18、5;break;void main()we = 1;/打开位选P0 = 0;/八位数码管全显示we = 0;/锁存位选du = 1;/打开段选端P0 = leddata22;while(1) KeyPro();/提取键值码并且送不同数值给数码管显示独立查询#include<reg52.h>#define uchar unsigned char#define uint unsigned intsbit we = P27;sbit du = P26;sbit S2 = P30;sbit S3 = P31;sbit S4 = P32;sbit S5 = P33; uchar code l

19、eddata= 0x3F, /"0" 0x06, /"1" 0x5B, /"2" 0x4F, /"3" 0x66, /"4" 0x6D, /"5" 0x7D, /"6" 0x07, /"7" 0x7F, /"8" 0x6F, /"9" 0x77, /"A" 0x7C, /"B" 0x39, /"C" 0x5E, /"D" 0x79, /"E" 0x71, /&qu