AccelStepper-Arduino-L298N

#include <AccelStepper.h>
#define HALFSTEP 8

// Motor pin definitions
#define motorPin1  10
#define motorPin2  11
#define motorPin3  12
#define motorPin4  13

// Initialize with pin sequence IN1-IN3-IN2-IN4 for using the AccelStepper
AccelStepper stepper1(HALFSTEP, motorPin1, motorPin3, motorPin2, motorPin4);

void setup() {
  stepper1.setMaxSpeed(5000.0);
  stepper1.setAcceleration(100.0);
  stepper1.setSpeed(600);
  stepper1.moveTo(10000);

}//--(end setup )---

void loop() {

  //Change direction when the stepper reaches the target position
  if (stepper1.distanceToGo() == 0) {
    stepper1.moveTo(-stepper1.currentPosition());
  }
  stepper1.run();
}