#include <DHT.h>

#define dirPin 3
#define stepPin 2
#define dhtPin A5
#define dhtType DHT22

DHT dht(dhtPin, dhtType);

const int stepsPerRevolution = 200;
const float targetTemperature = 25.0;
bool isMotorRotated = false;

void setup() {
  pinMode(dirPin, OUTPUT);
  pinMode(stepPin, OUTPUT);
  dht.begin();
}

void loop() {
  float temperature = dht.readTemperature();
  
  if (!isnan(temperature)) {
    if (temperature >= targetTemperature && !isMotorRotated) {
      digitalWrite(dirPin, HIGH);
      for (int x = 0; x < stepsPerRevolution; x++) {
        digitalWrite(stepPin, HIGH);
        delayMicroseconds(2000);
        digitalWrite(stepPin, LOW);
        delayMicroseconds(2000);
      }
      isMotorRotated = true;
    } else if (temperature < targetTemperature && isMotorRotated) {
      digitalWrite(dirPin, LOW);
      for (int x = 0; x < stepsPerRevolution; x++) {
        digitalWrite(stepPin, HIGH);
        delayMicroseconds(2000);
        digitalWrite(stepPin, LOW);
        delayMicroseconds(2000);
      }
      isMotorRotated = false;
    }
  } else {
  }
  
  delay(1000);
}