方波發(fā)生器教材

附錄Ⅰ#include<reg51.h>sbitout=P3^5; //JIESHIBOQIsbitkey1=P1^2; sbitkey2=P1^3;sbitkey3=P1^4;sbitkey4=P1^5;sbitkey5=P1^6;sbitkey6=P1^7;sbitcom1=P3^0;sbitcom2=P3^1;sbitcom3=P3^2;sbitcom4=P3^3;sbitcom5=P3^6;sbitcom6=P3^7;sbitled1=P1^0;sbitled2=P1^1;longi;longtemp=20;unsignedcharflag1,flag2; //zkb=num*temp/10;time=temp*10longnum=1;unsignedchartable[]= //顯示代碼，共陰極{ 0x3f,0x06,0x5b,0x4f,0x66, 0x6d,0x7d,0x07,0x7f,0x6f};unsignedintzkb,time;voiddisplay();voiddisplay2();voiddelay(); voidmain(){ TMOD=0X01; TH0=(65536-100)/256; TL0=(65536-100)%256; TR0=1; ET0=1; EA=1; out=0; while(1) { zkb=num*temp/10; time=temp*10; display(); display2(); if(key1==0) //占空比 { while(1) { zkb=num*temp/10; time=temp*10; display(); display2(); led1=0; led2=0; if(key2==0) { flag1++; if(flag1==3) flag1=1; while(!key2); } if(flag1==1) { led1=0; led2=1; if(key3==0) { num=num+1; if(num>99) num=99; while(!key3); } if(key4==0) { num=num+5; if(num>99) num=99; while(!key4); } if(key5==0) { num=num+10; if(num>99) num=99; while(!key5); } if(key6==0) break; } if(flag1==2) { led2=0; led1=1; if(key3==0) { num=num-1; if(num<1) num=1; while(!key3); } if(key4==0) { num=num-5; if(num<1) num=1; while(!key4); } if(key5==0) { num=num-10; if(num<1) num=1; while(!key5); } } if(key6==0) break; } } if(key6==0) //周期 { while(1) { zkb=num*temp/10; time=temp*10; display2(); display(); led1=0; led2=0; if(key2==0) { flag2++; if(flag2==3) flag2=1; while(!key2); } if(flag2==1) { led1=0; led2=1; if(key3==0) { temp=temp+1; if(temp>2000) temp=2000; while(!key3); } if(key4==0) { temp=temp+5; if(temp>2000) temp=2000; while(!key4); } if(key5==0) { temp=temp+100; if(temp>2000) temp=2000; while(!key5); } if(key1==0) break; } if(flag2==2) { zkb=num*temp/10; time=temp*10; led2=0; led1=1; if(key3==0) { temp=temp-1; if(temp<20) temp=20; while(!key3); } if(key4==0) { temp=temp-10; if(temp<20) temp=20; while(!key4); } if(key5==0) { temp=temp-100; if(temp<20) temp=20; while(!key5); } if(key1==0) break; } } } //if(key1==0) //display(); // break; }} voiddisplay(){ unsignedchara,b; a=num/10; b=num%10; com5=0; P2=~table[a]; delay(); com5=1; com6=0; P2=~table[b]; delay(); com6=1; }voiddisplay2(){ unsignedchara,b,c,d; a=temp/1000; b=temp%1000/100; c=temp%100/10; d=temp%10; com1=0; P0=~table[a]; delay(); com1=1; com2=0; P0=~table[b]; delay(); com2=1; com3=0; P0=~table[c]; delay(); com3=1; com4=0; P0=~table[d]; delay(); com4=1; }voidint0()interrupt1{ TH0=(65536-100)/256+TH0; TL0=(65