MCS-51程序使步进电机按照规定的转速和方向进行旋转，并将已转动的步数显示在数码管上

#include <reg52.h>
typedef unsigned char uchar; 
sfr P4=0xC0; 
sfr P4SW=0xBB; 
sbit inCLK = P4^4;  
sbit inData = P4^5; 
//FAN8200
sbit in1 = P3^2; 
sbit in2 = P1^0; 
sbit ce1=P1^1; 
sbit ce2=P1^4; 

sbit s1 = P3^6; 
sbit s2 = P3^7; 
int to0=0;
uchar count = 0;
uchar t0_cnt = 0;
int flag = 0; 
int b=0;
int c=0;
uchar code tab[] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};
init()
{
P4=0xFF;     
P4SW=0x70; 
TMOD = 0x11;
TH0 = 0x3C; 
TL0 = 0xB0; 
EA = 1;
TR0 = 1;