sketch.ino

# Wokwi project

This is a Wokwi project. Please edit this README file and add a description of your project.

## Usage

1. Add parts by clicking the blue "+" button in the diagram editor
2. Connect parts by dragging wires between them
3. Click the green play button to start the simulation


README.md

diagram.json

import network
from umqtt.simple import MQTTClient
import machine
import time

print("Connecting to WiFi", end="")
sta_if = network.WLAN(network.STA_IF)
sta_if.active(True)
sta_if.connect('Wokwi-GUEST', '')
while not sta_if.isconnected():
  print(".", end="")
  time.sleep(0.1)
print(" Connected!")

# WiFi and MQTT Broker details
wifi_ssid = "Wokwi-GUEST"
wifi_password = ""
mqtt_broker = "brok.er.hivemqcom"
mqtt_topic = b"2topic"  # Replace with your MQTT topic

# GPIO pin configuration
relay_pin = 5  # Replace with the GPIO pin connected to the relay (D5 on ESP32)
led_pin = 2    # Replace with the GPIO pin connected to the LED (D2 on ESP32)

# Setup GPIO
relay = machine.Pin(relay_pin, machine.Pin.OUT)
led = machine.Pin(led_pin, machine.Pin.OUT)
led.on()

# Connect to W


# Create MQTT client
client_id = "esp32"
print("Before MQTT Connection")
mqtt = MQTTClient(client_id, mqtt_broker)
print("After MQTT Connection")


def on_message(topic, msg):
    access_code = msg.decode("utf-8")
    print(f"Received access code: {access_code}")
    process_access_code(access_code)

def process_access_code(code):
    if code == "123#":
        relay.on()
        led.off()
        print("Processing access code for Cleaner")
        time.sleep(5)
        relay.off()
        led.on()
    elif code == "456#":
        relay.on()
        led.off()
        print("Processing access code for Guard")
        time.sleep(5)
        relay.off()
        led.on()
    else:
        time.sleep(5)
        print("Unknown access code. Door remains locked")

# Subscribe to MQTT topic
mqtt.set_callback(on_message)
mqtt.connect()
mqtt.subscribe(mqtt_topic)



try:
    while True:
        #message = input("Enter access code: ")
        print("Enter access code: ")
       
        #mqtt.publish(mqtt_topic, message)
        time.sleep(1)  # Keep the script running
        
        mqtt.check_msg()

except KeyboardInterrupt:
    print("\nScript terminated by the user.")
    mqtt.disconnect()
