# main.py - ESP32 MicroPython
import time
from machine import Pin, ADC
import dht

# --- Pins ---
DHT_PIN = 25
LDR_PIN = 34          # ADC input only
RELAY_PIN = 27

# --- Setup sensors ---
dht22 = dht.DHT22(Pin(DHT_PIN))

adc = ADC(Pin(LDR_PIN))
# Atténuation pour mesurer une plus grande plage de tension (jusqu'à ~3.3V)
adc.atten(ADC.ATTN_11DB)
# Résolution (selon firmware: 0..4095 généralement)
try:
    adc.width(ADC.WIDTH_12BIT)
except:
    pass

relay = Pin(RELAY_PIN, Pin.OUT)
relay.value(0)


while True:
    # --- Read DHT22 ---
    try:
        dht22.measure()
        temp = dht22.temperature()
        hum = dht22.humidity()
    except Exception as e:
        temp = None
        hum = None

    # --- Read LDR/Light sensor ---
    raw = adc.read()  # 0..4095 (souvent)
    # Conversion en pourcentage (approx). 0 = sombre, 100 = très lumineux
    light_pct = 100 - int((raw / 4095) * 100)

    # --- Toggle relay ---
    if relay.value()== 0:
        relay.value(1)
        relay_txt = "ON"
    else:
        relay.value(0)
        relay_txt = "OFF"

    # --- Display every 2s ---
    if temp is None or hum is None:
        print("Erreur DHT22 | Lumiere: {} ({}%) | Relais: {}".format(raw, light_pct, relay_txt))
    else:
        print("Temp: {:.1f}°C | Hum: {:.1f}% | Lumiere: {} ({}%) | Relais: {}".format(
            temp, hum, raw, light_pct, relay_txt
        ))

    time.sleep(2)