#include <Wire.h>  
#include <LiquidCrystal_I2C.h>  
#include <AccelStepper.h>  // Include the AccelStepper library  

// Initialize the LCD with I2C address 0x27 (common address)  
LiquidCrystal_I2C lcd(0x27, 16, 2); // 16 columns and 2 rows  

// Define stepper motor connections and motor interface type  
#define stepPin 2  
#define dirPin 3  
AccelStepper stepper(AccelStepper::DRIVER, stepPin, dirPin); // Create an instance of the AccelStepper class  

// Button pins  
const int forwardButtonPin = 7;  
const int reverseButtonPin = 8;  
const int resetButtonPin = 9; // Reset button pin  

// Variables  
int steps = 0;  
bool movingForward = false;  
bool movingReverse = false;  

void setup() {  
    // Initialize serial communication  
    Serial.begin(9600);  
    
    // Initialize the LCD with the number of columns and rows  
    lcd.begin(16, 2); // Specify 16 columns and 2 rows  
    lcd.backlight();  
    
    // Set pin modes  
    pinMode(forwardButtonPin, INPUT_PULLUP);  
    pinMode(reverseButtonPin, INPUT_PULLUP);  
    pinMode(resetButtonPin, INPUT_PULLUP); // Set reset button pin mode  
    
    // Set initial speed and acceleration  
    stepper.setMaxSpeed(1000); // Set maximum speed  
    stepper.setAcceleration(500); // Set acceleration  

    // Display initial message  
    lcd.setCursor(0, 0);  
    lcd.print("Steps: ");  
    lcd.setCursor(0, 1);  
    lcd.print(steps);  
}  

void loop() {  
    // Check button states  
    if (digitalRead(forwardButtonPin) == LOW) {  
        movingForward = true;  
        movingReverse = false;  
    } else if (digitalRead(reverseButtonPin) == LOW) {  
        movingReverse = true;  
        movingForward = false;  
    } else {  
        movingForward = false;  
        movingReverse = false;  
    }  

    // Check reset button state  
    if (digitalRead(resetButtonPin) == LOW) {  
        steps = 0; // Reset steps to zero  
        lcd.setCursor(0, 1);  
        lcd.print("Reset  "); // Display reset message  
        delay(500); // Debounce delay  
    } else {  
        // Move the stepper motor  
        if (movingForward) {  
            stepper.move(100); // Move forward by 100 steps  
            steps += 100;  
        } else if (movingReverse) {  
            stepper.move(-100); // Move backward by 100 steps  
            steps -= 100;  
        }  

        // Update the stepper motor position  
        stepper.run();  

        // Update the LCD and Serial output  
        lcd.setCursor(6, 0);  
        lcd.print(steps);  
        Serial.print("Steps: ");  
        Serial.println(steps);  
    }  
    
    delay(100); // Adjust delay for speed control  
}