按键控制数码管显示

main.c

#include <reg52.h>
#include <intrins.h>#define uchar unsigned char
typedef unsigned int uint;//定义位选管脚
sbit ASEG = P0^2;
sbit BSEG = P0^3;
sbit CSEG = P0^4;
sbit DSEG = P0^5;sbit BUT1 = P3^2;
sbit BUT2 = P3^3;sbit LED = P0^1;uchar code smgduan[17]=	 //共阴数码管显示0~F的值
{0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};uchar showdata[4] = { 0 };void delay(uint x)
{uchar i, j;while(x --) //1ms{_nop_();_nop_();_nop_();i = 11;j = 190;do{while (--j);} while (--i);}
}void seg4show(uchar i)
{switch(i){case 0:if(showdata[i] != 0){ASEG = 0; BSEG = 1; CSEG = 1; DSEG = 1;}else{ASEG = 1; BSEG = 1; CSEG = 1; DSEG = 1;	}break;case 1:if(showdata[i] != 0 | showdata[0] != 0){ASEG = 1; BSEG = 0; CSEG = 1; DSEG = 1;}else{ASEG = 1; BSEG = 1; CSEG = 1; DSEG = 1;	}break;	case 2:if(showdata[i] != 0 | showdata[0] != 0 | showdata[1] != 0){ASEG = 1; BSEG = 1; CSEG = 0; DSEG = 1;}else{ASEG = 1; BSEG = 1; CSEG = 1; DSEG = 1;	}break;	case 3:ASEG = 1; BSEG = 1; CSEG = 1; DSEG = 0;break;default: ASEG = 1; BSEG = 1; CSEG = 1; DSEG = 1; 		}P1 = smgduan[showdata[i]];
}void Int_init()
{EA = 1;EX0 = 1;EX1 = 1;
}void main()
{uchar i;Int_init();LED = 1;while(1){for( i = 0; i< 4; i ++){seg4show(i);delay(1);P1 = 0x00;}}
}void INT0_routine() interrupt 0
{if(BUT1 == 0){delay(10);LED = ~LED;if(BUT1 == 0){showdata[3] ++;while( ! BUT1);}}if(showdata[3] == 10){showdata[2]++;showdata[3] = 0;}if(showdata[2] == 10){showdata[1]++;showdata[2] = 0;}if(showdata[1] == 10){showdata[0]++;showdata[1] = 0;}if(showdata[0] == 10){showdata[0] = 0;}			
}void INT1_routine() interrupt 2
{if(BUT2 == 0){delay(10);if(BUT2 == 0){LED = ~LED;showdata[3] --;while( !BUT2 );}}if(showdata[3] > 10){showdata[2] --;showdata[3] = 9;}if(showdata[2] > 10){showdata[1] --;showdata[2] = 9;}if(showdata[1] > 10){showdata[0] --;showdata[1] = 9;}if(showdata[0] > 10){showdata[0] = 9;}
}