#include <IRremote.h>
#include <Stepper.h> // Include the Stepper library
#include <Wire.h> // Include the Wire library for I2C communication
#include <LiquidCrystal_I2C.h> // Include the LiquidCrystal_I2C library

#define PIN_RECEIVER 4
#define STEPS_PER_REVOLUTION 200 // Change this value according to your stepper motor

IRrecv receiver(PIN_RECEIVER);

// Define the pins connected to the stepper motor
const int STEPPER_PIN1 = 8;
const int STEPPER_PIN2 = 9;
const int STEPPER_PIN3 = 10;
const int STEPPER_PIN4 = 11;

Stepper stepper(STEPS_PER_REVOLUTION, STEPPER_PIN1, STEPPER_PIN2, STEPPER_PIN3, STEPPER_PIN4);

// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 16, 2); // Change the address if necessary

int stepperPosition = 0; // Variable to store the current position of the stepper motor

void setup() {
  Serial.begin(115200);
  receiver.enableIRIn();
  stepper.setSpeed(60); // Set the speed (RPM) of the stepper motor
  lcd.init();
  lcd.backlight(); // Turn on the backlight
  lcd.setCursor(0, 0);
  lcd.print("Setup completed."); // Display setup completion message
  lcd.setCursor(0, 1);
  lcd.print("Ready for IR & LCD.");
  Serial.println("Setup completed. Ready to receive IR commands and display on LCD.");
}

void loop() {
  if (receiver.decode()) {
    long int deCode = receiver.decodedIRData.command;

    // Print the received IR code
    Serial.print("Received IR code: ");
    Serial.println(deCode);

    // Button actions for controlling stepper motor
    switch (deCode) {
      case 2: // Button for moving stepper motor clockwise (+1)
        if (stepperPosition < 200) {
          stepper.step(1);
          stepperPosition++; // Increment stepper position
          updateLCD();
          Serial.print("Stepper position: ");
          Serial.println(stepperPosition);
        }
        break;
      case 152: // Button for moving stepper motor counterclockwise (-1)
        if (stepperPosition > 0) {
          stepper.step(-1);
          stepperPosition--; // Decrement stepper position
          updateLCD();
          Serial.print("Stepper position: ");
          Serial.println(stepperPosition);
        }
        break;
    }
    receiver.resume();
  }
}

// Function to update the LCD display with stepper motor position information
void updateLCD() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Stepper position: ");
  lcd.print(stepperPosition);
  lcd.print(" steps");
}