irrigatore/mqtt.cli.py

#!/usr/bin/env python3

import paho.mqtt.client as mqtt
import RPi.GPIO as GPIO
import datetime
import time
import json

def on_connect(client, userdata, flags, reason_code, properties):
  print('connesso',reason_code)
  client.subscribe('sensor/+',0)
  client.subscribe('message/+',0)
  client.subscribe('request/+',0)
  client.subscribe('Irrigatore/#',0)
  client.subscribe('Pompa/#',0)
  #client.subscribe('$SYS/#',0)
  client.publish('message',"{'message':'avvio'}")

def on_message(client,userdata,msg):
  ora = datetime.datetime.now().strftime("%H:%M:%S %d-%m-%Y")

  print('tipo dato ricevuto',type(msg.payload.decode()))

  print('msg.topic',msg.topic)
  print('msg.payload',str(msg.payload))

#  if type(msg.payload) == bytes:
#    print('msg.payload:',msg.payload.decode())

  data=None
  ok=False
  try:
    data = json.loads(msg.payload)
    print("{}: {}".format(ora,data))
    ok=True
  except json.decoder.JSONDecodeError as jse:
    print("errore",jse)
    print('payload',msg.payload)

  if ok:
    print(data['irrigatore'],data['status'],type(data['irrigatore']))
    if data['status'] == 1:
      GPIO.output(data['irrigatore'],GPIO.HIGH)
    else:
      GPIO.output(data['irrigatore'],GPIO.LOW)

GPIO.setmode(GPIO.BCM)

GPIO.setwarnings(False)
for i in range(4,12):
  print('linea',i)
  GPIO.setup(i,GPIO.OUT)

client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
client.on_connect = on_connect
client.on_message = on_message

client.username_pw_set('swarn','Abcd.1234')
client.connect('nuc',1883,60)
client.loop_forever()