from machine import ADC, Pin
from time import sleep, ticks_ms
import dht

# === Initialisation des capteurs ===

gas_sensor = ADC(Pin(26))           # MQ-2 sur GP26 (ADC0)
flame_sensor = Pin(15, Pin.IN)      # Capteur flamme sur GP15
dht_sensor = dht.DHT22(Pin(14))     # DHT22 sur GP14

print("FireFight IoT system starting...")

# === Boucle principale ===
while True:
    timestamp_ms = ticks_ms()           # Temps en millisecondes depuis le démarrage
    timestamp_s = timestamp_ms // 1000  # Convertir en secondes

    try:
        dht_sensor.measure()
        temp = dht_sensor.temperature()
        hum = dht_sensor.humidity()
    except Exception as e:
        print("Erreur de lecture DHT22:", e)
        temp = None
        hum = None

    gas_value = gas_sensor.read_u16()
    flame_detected = flame_sensor.value() == 0

    print(f"====== FIRE MONITORING — t = {timestamp_s}s ======")
    print("🔥 Flamme détectée :", "OUI" if flame_detected else "NON")
    print("🫁 Niveau de gaz    :", gas_value)
    if temp is not None and hum is not None:
        print("🌡 Température     :", temp, "°C")
        print("💧 Humidité        :", hum, "%")
    print("===========================================\n")

    sleep(2)