单片机步进电机正反转控制

正文摘要:

#include<reg51.h> sbit S1=P1^4; sbit S2=P1^5; sbit S3=P1^7; unsigned char keyval; unsigned char ID; void delay(void) { unsigned char i,j; for(i=0;i<150;i++) for(j=0;j<150;j++) ; } ...