想向大神求一个用pwm控制电机转速的程序，程序最好简单点，O(∩_∩)O谢谢

#include #define uchar unsigned char #define uint unsigned int sbit s2=P3^7; sbit s3=P3^6; sbit fm=P2^3; uchar pwm,num; void delay(uint ms) { uchar i; while(ms--) { for(i=0;i<120;i++); } }