float t_last;
float f;
float t=0;
byte Wave[]={B00000001,B00000010,B00000100,B00001000};
byte Fullstep[]={B00000011,B00000110,B00001100,B00010001};
byte HalfStep[]= {B00000001,B00000010,B00000011,B00000100,B00000101,B00000110,B00000111,B00001000,B00001001,B00001010,B00001011,B00001100,B00001101,B00001111};
String msg="How many spin do u want?";
int num_spin=0;//number of spin
String msg2="which dircation do u want to spin?";
int dirct;//dircation
String msg3="what kind of spin that u want?";//wave/fullstep
int spin_mode;
String msg4="what is the frenquence that u want?";
int i=0;
int cnt=0;
int cnt1=3;

void setup()
 {
  Serial.begin(9600);
  pinMode(8,OUTPUT);
  pinMode(11,OUTPUT);
  pinMode(10,OUTPUT);
  pinMode(9,OUTPUT);
  Serial.println(msg3);
  Serial.println(msg2);
  Serial.println(msg4);
  PORTB=0;

 }

void loop()
 {
if (Serial.available()>0)
{
  cnt=0;
   spin_mode=Serial.parseInt();
   Serial.print(spin_mode);
   dirct=Serial.parseInt();
 Serial.print(dirct);
 f=Serial.parseFloat();
}
if(cnt != num_spin)
{
  t=millis();
  if(t-t_last>=1000/f)
  {
    t_last=t;
  
 if(spin_mode==1)
  {
    if(i==4)
    {
      i=0; 
    }
    PORTB=Wave[i];
    if(dirct==1)
    {
      i++;
    }
    else
    {
      i=cnt1;
      cnt1--;
      if(cnt1==-1)
      {
        cnt1=3;
      }

    }
    cnt++;
  }
   if(spin_mode==2)
   {
    if(i==4)
    {
      i=0;
     
    }
    PORTB=Fullstep[i];
    
    if(dirct==1)
    {
      i++;
    }
    else
    {
      i=cnt1;
      cnt1--;
      if(cnt1==-1)
      {
        cnt1=3;
      }

    }
    cnt++;
   }
  }
   if(spin_mode==3)
   {
    if(i==4)
    {
      i=0;
     
    }
    PORTB=HalfStep[i];
    
    if(dirct==1)
    {
      i++;
    }
    else
    {
      i=cnt1;
      cnt1--;
      if(cnt1==-1)
      {
        cnt1=14;
      }

    }
    cnt++;
   }
  }
 }