import network
import time
import dht
from machine import Pin, ADC
import urequests

SSID = "Wokwi-GUEST"
PASSWORD = ""

THINGSPEAK_URL = "https://api.thingspeak.com/update"
THINGSPEAK_API_KEY = "W5M8BLYQBFSTBDQN"

DHT_PIN = Pin(15)  
LDR_PIN = ADC(Pin(34))  
TRIG_PIN = Pin(12, Pin.OUT)  
ECHO_PIN = Pin(13, Pin.IN)
PIR_PIN = Pin(14, Pin.IN) 
POT_PIN = ADC(Pin(34)) 

dht_sensor = dht.DHT22(DHT_PIN)  
ldr_sensor = LDR_PIN
ldr_sensor.atten(ADC.ATTN_11DB)

def conectar_wifi():
    print("Conectando a WiFi...")
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    wlan.connect(SSID, PASSWORD)
    intentos = 0
    while not wlan.isconnected():
        intentos += 1
        print(".", end="")
        time.sleep(0.5)
        if intentos > 20:
            print("\nNo se pudo conectar a WiFi.")
            return False
    print("\nConectado a WiFi!")
    return True

def medir_distancia():
    TRIG_PIN.off()
    time.sleep_us(2)
    TRIG_PIN.on()
    time.sleep_us(10)
    TRIG_PIN.off()
    while ECHO_PIN.value() == 0:
        inicio = time.ticks_us()
    while ECHO_PIN.value() == 1:
        fin = time.ticks_us()
    duracion = time.ticks_diff(fin, inicio)
    distancia = (duracion * 0.0343) / 2  
    return distancia

def enviar_a_thingspeak(temp, hum, luz, dist, pir, pot):
    data = {
        "api_key": THINGSPEAK_API_KEY,
        "field1": temp,
        "field2": hum,
        "field3": luz,
        "field4": dist,
        "field5": pir,
        "field6": pot,
    }
    try:
        respuesta = urequests.post(THINGSPEAK_URL, json=data)
        print("Enviado a ThingSpeak:", respuesta.text)
        respuesta.close()
    except Exception as e:
        print("Error al enviar datos:", e)

if conectar_wifi():
    while True:
        try:
            dht_sensor.measure()
            temperatura = dht_sensor.temperature()  
            humedad = dht_sensor.humidity() 

            luz = ldr_sensor.read()
            distancia = medir_distancia()
            pir = PIR_PIN.value()  
            pot = POT_PIN.read() 

            print("Temperatura:", temperatura, "°C")
            print("Humedad:", humedad, "%")
            print("Luz:", luz)
            print("Distancia:", distancia, "cm")
            print("PIR:", pir)
            print("Potenciómetro:", pot)

            enviar_a_thingspeak(temperatura, humedad, luz, distancia, pir, pot)

            time.sleep(15)

        except Exception as e:
            print("Error en la lectura:", e)