c51驱动步进马达的电路和程序代码

#include c:\mc51\8051io.h /* include i/o header file */
#include c:\mc51\8051reg.h
register unsigned char j,flag1,temp;
register unsigned int cw_n,ccw_n;
unsigned char step[8]={0x80,0xc0,0x40,0x60,0x20,0x30,0x10,0x90}
#define n 400
/* flag1 mask byte
0x01 run cw()
0x02 run ccw()
*/(c51 drive stepper motor circuit and code)