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程序代碼的邏輯有問(wèn)題吧，，，，，沒(méi)有需求、說(shuō)明也不詳細(xì)，，，，大概理解，應(yīng)該是這樣
- #include <REGX52.H>
- #include<stdio.h>
- sbit DJA=P2^0;
- sbit DJB=P2^1;
- sbit S1 =P3^2;
- sbit S2 =P3^3;
- bit flag;
- unsigned char number;
- void delay(unsigned int i){
- unsigned int k;
- for(k=0;k<i;k++);
- }
- void pwm(bit a,bit b,unsigned int d1,unsigned int d2){
- DJB=a;
- DJA=b;
- delay(d1);
- DJA=0;
- DJB=0;
- delay(d2);
- }
- void main(){
- flag=0;
- number=0x00;
- DJA=0;
- DJB=0;
-
- while(1){
- if(S1==0){
- delay(1200);
- if(S1==0){
- while(!S1);
- flag=~flag;
- }
- }
-
- if(S2==0){
- delay(1200);
- if(S2==0){
- while(!S2);
- if(number<=3) number++; else number=0x01;
- }
- }
-
- if(!flag){
- switch(number){
- case 0x01:pwm(0,1, 720,1680);break;
- case 0x02:pwm(0,1,1250,1250);break;
- case 0x03:pwm(0,1,1680, 720);break;
- default:;
- }
- }else{
- switch(number){
- case 0x01:pwm(0,1, 720,1680);break;
- case 0x02:pwm(0,1,1250,1250);break;
- case 0x03:pwm(0,1,1680, 720);break;
- default:;
- }
- }
- }
- }
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