Wokwi - Online ESP32, STM32, Arduino Simulator

#include <WiFi.h>
#include <WebServer.h>

const char* ssid = "Wokwi-GUEST";
const char* password = "";

IPAddress local_ip(192,168,100,5);
IPAddress gateway(192, 168, 100, 2);
IPAddress subnet(255, 255, 255, 0);

WebServer server(80);

uint8_t led1 = 26;
uint8_t led2 = 27;

bool led1_state = LOW;
bool led2_state = LOW;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  
  WiFi.softAP(ssid, password);
  WiFi.softAPConfig(local_ip,gateway,subnet);
  delay(100);

  Serial.print("Access Point IP address: ");
  Serial.println(WiFi.softAPIP());

  server.on("/", handle_ledOnConnect);
  server.on("/led1ON", handle_led1ON);
  server.on("/led2ON", handle_led2ON);
  server.on("/led1OFF", handle_led1OFF);
  server.on("/led2OFF", handle_led2OFF);
  server.onNotFound(handle_notFound);

  server.begin();
  Serial.println("Connected!");
}

void loop() {
  server.handleClient();

  if(led1_state){
    digitalWrite(led1, HIGH);
  }else{
    digitalWrite(led1, LOW);
  }

  if(led2_state){
    digitalWrite(led2, HIGH);
  }else{
    digitalWrite(led2, LOW);
  }
}

void handle_ledOnConnect(){
  led1_state = LOW;
  led2_state = LOW;

  Serial.println("Pins LOW");
  server.send(200, "text/html", sendHTML(led1_state, led2_state));
}

void handle_led1ON(){
  led1_state = HIGH;
  led2_state = LOW;

  server.send(200, "text/html", sendHTML(led1_state, led2_state));
}

void handle_led2ON(){
  led2_state = HIGH;

  server.send(200, "text/html", sendHTML(led1_state, led2_state));
}

void handle_led1OFF(){
  led1_state = LOW;

  server.send(200, "text/html", sendHTML(led1_state, led2_state));
}

void handle_led2OFF(){
  led2_state = LOW;

  server.send(200, "text/html", sendHTML(led1_state, led2_state));
}

void handle_notFound(){
  server.send(404, "text/plain", "Not found!");
}

String sendHTML(uint8_t led1, uint8_t led2){
  String page = "<!DOCTYPE><html>\n";

  page+= "<head>\n";
  page+= "<title>LED control</title>\n";
  page+= "</head>\n";
  page+= "<body>\n";
  
  if(led1){
    page+= "<p>LED 1 ON</p>\n";
    page+= "<a href=\"/led1ON\">LED1</a>\n";
  }else{
    page+= "<p>LED 1 OFF</p>\n";
    page+= "<a href=\"/led1OFF\">LED1</a>\n";
  }

  if(led2){
    page+= "<p>LED 2 ON </p>";
    page+= "<a href= \"/led2ON\">LED2</a>\n";
  }
  else{
    page+="<p> LED 2 OFF</p>";
    page+= "<a href=\"/led2OFF\">LED2</a>\n";
  }

  page+="</body>";
  page+="</html>";

  return page;
}