diandongji.zip_diandongji_电动_电动机转速

#include<reg51.h> #define uint unsigned int sbit k1=P3^4; sbit k2=P3^5; sbit s2=P3^2; sbit s3=P3^3; void isr_int0(void); void isr_int1(void); void zd_t0ist(void); uint speed,count,r1,i,t,k; void main() { k=0; t=0;r1=0x11; speed=0; count=1; TMOD=0x01; ET0=1; EA=1; Ex0=1; EX1=1; TH0=0xcf; TL0=0x2c; for(;;) { if(k1==0) { P0=0xff; P2=0xff; speed=0; TR0=0; } else { if(k2==0) P0=0xbf; else P0=0xf9; if(speed==0) { P2=0xc0; TR0=0; } else TR0=1; } } } void isr_int0(void) interrupt0 { if(speed<7) speed=speed+1; while(s3==0) { for(i=0;i<10;i++); } } void zd_t0ist(void) interrupt 1 { TH0=0xd8; TL0=0xf0; switch(speed) { case 0:P2=0xc0;count=0;break; case 1:P2=0xf9;count=60;break; case 2:P2=0xa4;count=40;break; case 3:P2=0xb0;count=35;break; case 4:P2=0x99;count=30;break; case 5:P2=0x92;count=28;break; case 6:P2=0x82;count=25;break; case 7:P2=0xf8;count=21;break; default:break; } if(t==0) t=count; if(t>0) t=t-1; if(k2==0) { if(t==0) { switch(k) { case 0:P1=0x01;break; case 1:P1=0x02;break; case 2:P1=0x04;break; case 3:P1=0x08;break; default:break; } k=k+1; if(k==4) k=0; } } else { if(t==0) { switch(k) { case 0:P1=0x08;break; case 1:P1=0x04;break; case 2:P1=0x02;break; case 3:P1=0x01;break; default:break; } k=k+1; if(k==4) k=0; } } }