//Mainecoast Shop Digital product

#include "FastAccelStepper.h"
//#include "AVRStepperPins.h" // Only required for AVR controllers

#define dirPinStepper    5
#define enablePinStepper 6
#define stepPinStepper   9
#define signalPin   A0
int speed;
int var;

// Change this based on your setup!  max number of pulses per second you motor and driver can handle before stalling
int maxspeed =2650;

int mult = maxspeed/450;
int minspeed = maxspeed/160;
// If using an AVR device use the definitons provided in AVRStepperPins
//    stepPinStepper1A
//
// or even shorter (for 2560 the correct pin on the chosen timer is selected):
//    stepPinStepperA

FastAccelStepperEngine engine = FastAccelStepperEngine();
FastAccelStepper *stepper = NULL;

void setup() {
  //Serial.begin(115200);
  // the following is required to initialize the stepper motor witht he correct pins
   engine.init();
   stepper = engine.stepperConnectToPin(stepPinStepper);
   if (stepper) {
      stepper->setDirectionPin(dirPinStepper);
      stepper->setEnablePin(enablePinStepper);
      stepper->setAutoEnable(true);
      //  Acceleration set to 3000 steps per second
      stepper->setAcceleration(30000);    // 100 steps/s²
   }
}

void loop() {
  // reads potentiometer value
  var = analogRead(signalPin);
  // If potentiometer is in the lower 40%, move ccw

  //if (var < 450){
    speed = ((maxspeed - var*mult) + minspeed);
    stepper->setSpeedInHz(speed); 

  // the number of steps away 
  const long stepsThreshold = -1000;

  // Get the current and target positions
  long currentPosition = stepper->getCurrentPosition();
  long targetPosition = 1000;

  // Check if steps remaining are below the threshold
  if ((targetPosition + currentPosition) > stepsThreshold) {
        // Update the target position to a higher value to keep the stepper motor running continuously
    stepper->moveTo(currentPosition - 1000);
  }
  //}

  // If stepper potentiometer is in the upper 40%, move cw


}