// https://forum.arduino.cc/t/trying-to-use-a-limit-switch-to-change-the-direction-of-rotation-of-stepper-motor/1250150
#include <Servo.h>  //Servo library
// Pin Definitions
#define LIMIT_SWITCH_PIN 7
#define dirPin 2   // Direction
#define stepPin 3  // Step Pulse
#define enaPin 4   // Enable Motor
// Variables
int stepDelay = 1250;  // Delay between steps in microseconds
int stepsToMove = 800;
bool run = true;
//-------------------------------------------------------------
void setup() {
  Serial.begin(9600);
  pinMode(LIMIT_SWITCH_PIN, INPUT_PULLUP);
  // // Set pin modes
  pinMode(enaPin, OUTPUT);
  digitalWrite(enaPin, LOW);  // Enable motor
  pinMode(dirPin, OUTPUT);
  pinMode(stepPin, OUTPUT);
}
//-------------------------------------------------------------
void switchHit() {
  digitalWrite(dirPin, HIGH);  // Set direction to clockwise
  for (int i = 0; i < stepsToMove; i++) {
    digitalWrite(stepPin, HIGH);
    delayMicroseconds(20);
    digitalWrite(stepPin, LOW);
    delayMicroseconds(stepDelay - 20);
  }
  run = false;
}
//-------------------------------------------------------------
void loop() {
  if ( run == true) {
    digitalWrite(dirPin, LOW);  // Set direction to clockwise
    for (int i = 0; i < stepsToMove; i++) {
      if (digitalRead(LIMIT_SWITCH_PIN) == LOW) {
        Serial.println("Activated!");
        switchHit();
        break;
      }
      digitalWrite(stepPin, HIGH);
      delayMicroseconds(20);
      digitalWrite(stepPin, LOW);
      delayMicroseconds(stepDelay - 20);
    }
    delay(3000);  // Delay for 1 second
  }
}