/*
 * MotorKnob
 *
 * A stepper motor follows the turns of a potentiometer
 * (or other sensor) on analog input 0.
 *
 * http://www.arduino.cc/en/Reference/Stepper
 * This example code is in the public domain.
 */
#include <WiFi.h>
#include <ESPAsyncWebServer.h>
#include <ESPDash.h>
#include <Ticker.h>
#include <Stepper.h>
#include <AsyncElegantOTA.h>

 
Ticker periodicTicker;


// change this to the number of steps on your motor
const int stepsPerRevolution = 4096;  // change this to fit the number of steps per revolution

// ULN2003 Motor Driver Pins
#define IN1 19
#define IN2 18
#define IN3 5
#define IN4 17

// initialize the stepper library
Stepper myStepper(stepsPerRevolution, IN1, IN3, IN2, IN4);

// the previous reading from the analog input
int previous = 0;

String hostname = "ESP32";
const char* ssid = "MatLab";
const char* password =  "L4b@dnvgl1363";

unsigned long slideVal = 0;

AsyncWebServer server(80);
ESPDash dashboard(&server); 

/* 
  Dashboard Cards 
  Slider Card
  Valid Arguments: (ESPDash dashboard, Card Type, const char* name, const char* symbol (optional), int min, int max)
*/
Card slider(&dashboard, SLIDER_CARD, "Stepper Slider", "", 0, stepsPerRevolution);


void updateCards() {
/*
  We provide our attachCallback with a lambda function to handle incomming data
  `value` is the boolean sent from your dashboard
*/

 /* Attach Slider Callback */
  slider.attachCallback([&](int value){
    slideVal = value;
    /* Print our new slider value received from dashboard */
    Serial.println("Slider Triggered: "+String(value));
    /* Make sure we update our slider's value and send update to dashboard */
    slider.update(value);
    dashboard.sendUpdates(); 

});

}

void setup() {

  pinMode(2,OUTPUT);
  
    Serial.begin(115200);
  WiFi.config(INADDR_NONE, INADDR_NONE, INADDR_NONE, INADDR_NONE);
  WiFi.setHostname(hostname.c_str()); //define hostname



  WiFi.begin(ssid, password);  
  while (WiFi.status() != WL_CONNECTED) {
      digitalWrite(2 ,LOW);
    delay(750);
    Serial.println("Connecting to WiFi.");
    delay(750);
    Serial.println("Connecting to WiFi..");
    delay(750);
    Serial.println("Connecting to WiFi...");
  }
   
  Serial.println(WiFi.localIP());
   
  server.begin();
  digitalWrite(2 ,HIGH);
 
  periodicTicker.attach_ms(5000, updateCards);

  // set the speed in RPM
  myStepper.setSpeed(1);
 
}

void loop() {
  // get the sensor value
  // Få byttet analogread med dashboard verdi
  int val = -(slideVal/8);
  // move a number of steps equal to the change in the
  // sensor reading
  myStepper.step(val - previous);

  // remember the previous value of the sensor
  previous = val;
}