#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal.h>

// Data wire is connected to Arduino digital pin 2
#define ONE_WIRE_BUS 2

// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature sensor 
DallasTemperature sensors(&oneWire);

// LCD pins
LiquidCrystal lcd(7, 6, 5, 4, 3, 2); // RS, E, D4, D5, D6, D7

// Stepper motor pins
#define STEP_PIN 8
#define DIR_PIN 9
#define ENABLE_PIN 10

const int MIN_SPEED = 1000; // Minimum motor speed (microseconds)
const int MAX_SPEED = 500; // Maximum motor speed (microseconds)

void setup() {
  // Start serial communication for debugging
  Serial.begin(9600);
  
  // Start LCD
  lcd.begin(16, 2);
  
  // Start DS18B20 temperature sensor
  sensors.begin();
  
  // Set stepper motor pins as output
  pinMode(STEP_PIN, OUTPUT);
  pinMode(DIR_PIN, OUTPUT);
  pinMode(ENABLE_PIN, OUTPUT);
  
  // Enable the motor driver
  digitalWrite(ENABLE_PIN, LOW);
}

void loop() {
  // Request temperature from DS18B20
  sensors.requestTemperatures();
  float temperatureC = getManualTemperature(); // Get manual temperature input
  
  // Print temperature to serial monitor
  Serial.print("Temperature: ");
  Serial.print(temperatureC);
  Serial.println(" °C");
  
  // Display temperature on LCD
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(temperatureC);
  lcd.print(" C");
  
  // Vary motor speed based on temperature
  int speed = map(temperatureC, 0, 100, MAX_SPEED, MIN_SPEED); // Assuming temperature range from 0 to 100
  rotateMotor(speed);
  
  // Print motor speed
  Serial.print("Motor Speed: ");
  Serial.println(speed);
  
  delay(1000); // Delay before next reading
}

float getManualTemperature() {
  Serial.println("Enter temperature (0-100 °C): ");
  while (!Serial.available()) {} // Wait for user input
  float temperature = Serial.parseFloat(); // Read user input
  return temperature;
}

void rotateMotor(int speed) {
  // Set direction of motor rotation (clockwise or counterclockwise)
  digitalWrite(DIR_PIN, HIGH); // Set HIGH for clockwise, LOW for counterclockwise
  
  // Generate a step pulse to move the motor
  digitalWrite(STEP_PIN, HIGH);
  delayMicroseconds(speed); // Adjust this delay based on desired speed
  digitalWrite(STEP_PIN, LOW);
  delayMicroseconds(speed); // Adjust this delay based on desired speed
}