void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32-S2!");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}
#include <Wire.h>

#include <Adafruit_GFX.h>

#include <Adafruit_SSD1306.h>

#include "DHT.h"

 

#define LED_PIN 2

#define DHTPIN 4

#define DHTTYPE DHT22

 

Adafruit_SSD1306 display(128,64,&Wire,-1);

DHT dht(DHTPIN,DHTTYPE);

 

String command="";

float temp;

 

void showMessage(String msg){

 display.clearDisplay();

 display.setCursor(0,0);

 display.println(msg);

 display.display();

}

 

void setup(){

 Serial.begin(115200);

 pinMode(LED_PIN,OUTPUT);

 

 dht.begin();

 display.begin(SSD1306_SWITCHCAPVCC,0x3C);

 display.setTextColor(WHITE);

}

void loop(){

 temp = dht.readTemperature();

 if(Serial.available()){

   command = Serial.readStringUntil('\n');

   command.trim();

   if(command=="ON" && temp>25){

     digitalWrite(LED_PIN,HIGH);

     showMessage("Cooling Mode");

   }

   else if(command=="ON"){

     showMessage("Too Cold");

   }

   if(command=="OFF"){

     digitalWrite(LED_PIN,LOW);

     showMessage("System OFF");

   }

 }

 delay(1000);

}