import dht
from umqtt.simple import MQTTClient
from machine import Pin
from utime import sleep
import time
import network
# MQTT configuration
MQTT_CLIENT_ID = "Wokwi-GUEST"
MQTT_BROKER = "test.mosquitto.org"
MQTT_USER = ""
MQTT_PASSWORD = ""
MQTT_TOPIC = "/data"
# Define le dht22 comme un périphérique d'entrée
d = Pin(15, Pin.IN)
sensor = dht.DHT22(d)
# se connecter au wifi
try:
sta_if = network.WLAN(network.STA_IF)
sta_if.active(True)
sta_if.connect('Wokwi-GUEST', '')
print("---Connexion en cours---")
while not sta_if.isconnected():
print(".", end="")
time.sleep(0.1)
except Excepion as e:
print(e)
print("---Connectée!---")
# Connection au MQTT broker
client = MQTTClient(MQTT_CLIENT_ID,MQTT_BROKER,user=MQTT_USER,password=MQTT_PASSWORD)
try:
client.connect()
except OSError as e:
print(f"Error connecting to MQTT broker: {e}")
sleep(100)
while True:
# lire la temperature et humidité
sensor.measure()
# Stocker les valeurs de la température et de l'humidité dans des variables
tmp = sensor.temperature()
hum = sensor.humidity()
# publier la temperature et humidity au MQTT broker
try:
client.publish(MQTT_TOPIC + "/temperature",str(tmp))
client.publish(MQTT_TOPIC + "/humidity",str(hum))
# Afficher les résultats
print(f"Température: {tmp}°C \nHumidité: {hum}%")
print("_____\n")
except OSError as e:
print(f"Error publishing data to MQTT broker: {e}")
sleep(1)