# pub.py
import network
import socket
import time
import random
from umqtt.simple import MQTTClient
ssid = "Wokwi-GUEST"
password = ""
server="backend.thinger.io"
ClientID = f'mqtt_test'
user = "mijimy"
password = "12345678"
topic = "value"
topic1 = "temp3"
#msg = b'{"msg":"hello"}'
#TOPIC = "Properties"
#TOPIC = "mqtt_test/{{device}}/value"
TOPIC = "mqtt_test/Property/relay"
def connectw():
#Connect to WLAN
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
if wlan.isconnected() == False:
wlan.connect(ssid, password)
while wlan.isconnected() == False:
print('Waiting for connection...')
time.sleep(1)
print(wlan.ifconfig())
try:
connectw()
except KeyboardInterrupt:
machine.reset()
def connect():
print('Connected to MQTT Broker "%s"' % (server))
client = MQTTClient(ClientID, server, 1883, user, password)
client.connect()
return client
def reconnect():
print('Failed to connect to MQTT broker, Reconnecting...' % (server))
time.sleep(5)
client.reconnect()
try:
client = connect()
except OSError as e:
reconnect()
def msg_received(topic, msg):
print("Received:", str(msg), "Topic:", str(topic))
client.set_callback(msg_received)
client.subscribe(TOPIC)
print("Subscribed to", TOPIC)
while True:
temperature=25#+(random.randrange(1,50))/10
temperature2=28#+(random.randrange(1,50))/10
send1='"temp1":'+'"'+str(temperature)+'"'
send2='"temp2":'+'"'+str(temperature2)+'"'
print(send1,send2)
# msg = b'{"temp":"send"}'
msg=b'{'+send1+','+send2+'}'
#msg2=b'{'+send2+'}'
# msg=msg1+' '+msg2
print('send message %s on topic %s' % (msg, topic))
client.publish(topic, msg, qos=0)
# msg=str(temperature)
# client.publish(topic1, msg, qos=0)
time.sleep(1)
#client.ping()
client.wait_msg()
time.sleep(1)