import machine
import time
import dht

#========================================== 
#STEP 1: ALIGN YOUR HARDWARE PINS 
#========================================== 
#:Look at your simulator canvas! Change these numbers to match your wires
DHT_PIN_NUMBER = 15   # Put the pin number where your DHT sensor wire is connected

#Telling the ESP32 chip where the parts are plugged in
sensor = dht.DHT22(machine.Pin(DHT_PIN_NUMBER))

#========================================== 
#STEP 2: SET YOUR THRESHOLD (MAGIC BOUNDARY)
#========================================== 
#This is the exact limit or number boundary that triggers our automatic system
TEMPERATURE_THRESHOLD = 30

print("--- Smart City Automation System Started ---")

#========================================== 
#STEP 3: THE AUTOMATION LOOP
#========================================== 
:while True
        try:
           # Ask the sensor to check the air temperature
           sensor.measure()
           current_temp = sensor.temperature()

           # IF/THEN Logic: Has the temperature crossed our threshold boundary?
           if current_temp > TEMPERATURE_THRESHOLD:
               print("⚠  Alert! Threshold limit crossed!")
           else:
               # Print the current number so we can see it on screen
               print("Live Temperature Reading:", current_temp, "°C")

        except OSError as e:
            # If something goes wrong, give a friendly troubleshooting hint
            print("Error: Cannot read sensor data. Check your wire connections!")

# Rest for 2 seconds before taking the next temperature reading
time.sleep(2)