Wokwi - Online ESP32, STM32, Arduino Simulator

import network
import time
import socket
from machine import Pin

# Timeout counter for Wi-Fi connection
timeout = 0

# Initialize Wi-Fi
wifi = network.WLAN(network.STA_IF)

wifi.active(False)
time.sleep(0.5)
wifi.active(True)

wifi.connect('vivo V27','18031992')

if not wifi.isconnected():
    print('Connecting...')
    while not wifi.isconnected() and timeout < 5:
        print(f"Retrying... {5 - timeout}s")
        timeout += 1
        time.sleep(1)

if wifi.isconnected():
    print('Network Config:', wifi.ifconfig())
    print('Connected')
else:
    print("Failed to connect to Wi-Fi")
    raise RuntimeError("Wi-Fi connection failed")

# HTML content
html = '''\
HTTP/1.1 200 OK
Content-Type: text/html

<!DOCTYPE html>
<html>
<center><h2>ESP32 WebServer</h2></center>
<form>
<center>
<h3>LED</h3>
<button name="LED" value="ON" type="submit">ON</button>
<button name="LED" value="OFF" type="submit">OFF</button>
</center>
</form>
</html>
'''

# Setup LED (use GPIO 15 as an example; change if needed)
LED = Pin("LED", Pin.OUT)
LED.value(0)

# Setup socket server
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 80))
s.listen(5)
print("Server is running and waiting for connections...")

while True:
    try:
        conn, addr = s.accept()
        print("Got a connection from", addr)

        request = conn.recv(1024).decode('utf-8')
        print("Request content:", request)

        LED_ON = request.find("/\?LED=ON")
        LED_OFF = request.find("/\?LED=OFF")

        if LED_ON != -1:
            print("Turning LED ON")
            LED.value(1)
        if LED_OFF != -1:
            print("Turning LED OFF")
            LED.value(0)

        conn.send(html)  # Send HTML response
        conn.close()
    except Exception as e:
        print("Error:", e)