#include <Wire.h>
byte dirPin = 8;
byte stepPin = 9;
unsigned long Timer=1;
unsigned long Spide1=4000;
int x;String start=" ";
void setup() { 
  Serial.begin(9600);
  Serial.println("Starting StepperTest");
  //digitalWrite(ledPin, LOW);
  pinMode(dirPin, OUTPUT);
  pinMode(stepPin, OUTPUT);

  Wire.begin(4);                // join i2c bus with address #4
  Wire.onReceive(receiveEvent); // register event
  Serial.begin(9600);           // start serial for outpu
   delay(500);
x=2;
delay(500);
}


void loop() { 

if(x==0){x=0;start="  ";}
if(x==1){start="A";}
if(x==2){start="B";}
if(x==3){x=0;start="C";}
if(x==4){x=0;start="D";}
if(x==5){x=0;start="E";}

if(start=="A"){Steppr1();}
if(start=="B"){Steppr2();}
if(start=="C"){start=" ";Spide1=Spide1-20;}
if(start=="D"){start=" ";Spide1=Spide1+20;}
if(start=="E"){Spide1=1800;}


 
}

void receiveEvent(int howMany)
{
  while(1 < Wire.available()) // loop through all but the last
  {
    char c = Wire.read(); // receive byte as a character
    Serial.print(c);         // print the character
  }
   x = Wire.read();    // receive byte as an integer
  Serial.println(x);         // print the integer
}


void Steppr1(){
    for(int i = 0; i < Timer;  i++) {
      Serial.println("1");
     digitalWrite(dirPin,HIGH);  
    digitalWrite(stepPin,HIGH); 
    delayMicroseconds(Spide1); 
    digitalWrite(stepPin,LOW); 
    delayMicroseconds(Spide1); 
    }
 }

    void Steppr2(){
    for(int i = 0; i <  Timer; i++) {
      Serial.println("2");
     digitalWrite(dirPin,LOW);  
    digitalWrite(stepPin,HIGH); 
    delayMicroseconds(Spide1); 
    digitalWrite(stepPin,LOW); 
    delayMicroseconds(Spide1); 
    }
 }