//Use potentiometer 1 to define the number of turns a stepper motor must take (range:1-20)
//Use potentiometer 2 to define the speed of the stepper motor (range displayed to user:10-100, internal range up to you).
//Use a screen to display a selection screen for number-of-turns/speed with appropriate labels (i.e. Turns:..... Speed (RPM):.....).
//Press a button to execute the turns. While turns are being executed the screen should display a message to user indicating this is happening.
//After turns are completed, user should be returned to turn/speed selection screen
#include <AccelStepper.h>
#include <LiquidCrystal_I2C.h>

#define potIn A1
#define pot2In A2
#define BUTTON_PIN 4

//Define stepper motor connections and steps per rev

#define dirPin 8
#define stepPin 9
#define enabPin 10
int stepsPerRev=200;
int mspeed=600; //max motor speed

//Attach pins to servo library
AccelStepper stepper(AccelStepper::DRIVER, stepPin, dirPin);

//Define LCD parameters
int time_old=0;
#define I2C_ADDR 0x27
#define LCD_COLUMNS 163
#define LCD_LINES 2

//Attach pins to LCD library
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void setup() {
  pinMode(potIn, INPUT);
  pinMode(pot2In, INPUT);
  pinMode(dirPin, OUTPUT);
  pinMode(stepPin, OUTPUT);
  pinMode(enabPin, OUTPUT);
  pinMode(BUTTON_PIN, INPUT);
  digitalWrite(BUTTON_PIN, HIGH);
  digitalWrite(enabPin, LOW);

  //get the lcd started
  lcd.init();
  lcd.backlight();
  delay(500);
  lcd.setCursor(0,0);
  lcd.print("Hello Guys");
  delay(2000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("turns");
  lcd.setCursor(0,1);
  lcd.print("speed:");

  //work on steppers
  stepper.setMaxSpeed(mspeed);
  stepper.setAcceleration(100);
  stepper.setSpeed(50); 
  Serial.begin(9600);
}

void loop() {
  //digitalRead would either be on or off
  int myTime=millis();
  int in1=analogRead(potIn); //can use 
  int in2=analogRead(pot2In);
  int bps=digitalRead(BUTTON_PIN);
  //remap the rotations
  int name1=map(in1,0,1023,1,20);
  int name2=map(in2,0,1023,10,100);
  //remap the speed
  int speed=map(in2,0,1023,60,mspeed);
  int steps = name1*stepsPerRev;

  lcd.setCursor(13,0);
  lcd.print(name1);
  lcd.print("  ");
  lcd.setCursor(13,1);
  lcd.print(name2);
  lcd.print("  ");

  if (bps==LOW){
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("loading...");

  stepper.setMaxSpeed(mspeed);
  stepper.move(steps);

  while(stepper.distanceToGo()!=0){ //number of steps left 
  stepper.run(); //everytime to run, it takes 1 step, until it reaches 0
  }
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("turns");
  lcd.setCursor(0,1);
  lcd.print("speed:");
}
}