#include <AccelStepper.h>

#define BUTTON 11
#define LED 13
#define dirPin1 7
#define stepPin1 8
#define dirPin2 3
#define stepPin2 4
#define motorInterfaceType 1
#define AnalogPin A6

// Create a new instance of the AccelStepper class:
AccelStepper stepper1 = AccelStepper(motorInterfaceType, stepPin1, dirPin1);
AccelStepper stepper2 = AccelStepper(motorInterfaceType, stepPin2, dirPin2);
//AccelStepper stepper1 = AccelStepper(stepPin1, dirPin1);
//AccelStepper stepper2 = AccelStepper(stepPin2, dirPin2);

void setup()
{  
  Serial.begin(115200);
    stepper1.setMaxSpeed(200.0);
    stepper1.setAcceleration(200.0);
    stepper1.moveTo(100);
    
    stepper2.setMaxSpeed(200.0);
    stepper2.setAcceleration(200.0);
    stepper2.setSpeed(200);
    
    pinMode(BUTTON, INPUT_PULLUP);
    pinMode(LED, OUTPUT);
    //stepper2.runSpeed();

}

void loop()
{
    if (digitalRead(BUTTON) == LOW) {
      stepper2.runSpeed();
    }  
    int a = analogRead(AnalogPin);
    int x = map(a, 0, 1023, -200, 200);
  //digitalWrite(LED, digitalRead(BUTTON));
    // Change direction at the limits
    if (stepper1.distanceToGo() == 0) {
	    stepper1.moveTo(-stepper1.currentPosition());
      
    }  
    stepper1.run();
    stepper2.setSpeed(x);
    //stepper2.runSpeed();
    //stepper2.run();
}