-2
에 여러 개의 개별 스레드를 추가하고 내가 추가 할 필요가이 내 코드입니다 MQTT 파이썬 코드
(1) 루프 UART하여 특정 데이터를받을 때 데이터를 게시 할 수 있습니다 (thread1) (ser.read())
(2) timed delay를 사용하여 report_temp_humidity()를 실행할 수있는 루프 (thread2)
그래서 테스트 용 스레드를 넣었으나 루프는 한 번만 실행됩니다.
"mqttclient.loop_forever()"가 줄 끝에 오는 이유는 무엇입니까?
이에 대한 도움이 필요합니다.
import paho.mqtt.client as mqtt
import Adafruit_DHT
import Adafruit_BBIO.UART as UART
import serial
import threading
import time
# DHT-11 Temperature & Humidity
sensor = Adafruit_DHT.DHT11
sensor_pin = 'P8_11'
# UART
UART.setup("UART1")
ser = serial.Serial(port = "/dev/ttyO1", baudrate=9600)
ser.close()
ser.open()
# Define event callbacks
def on_connect(self, client, userdata, rc):
if rc == 0:
print("Connected successfully.")
else:
print("Connection failed. rc= "+str(rc))
def on_publish(client, userdata, mid):
print("Message "+str(mid)+" published.")
def on_subscribe(client, userdata, mid, granted_qos):
print("Subscribe with mid "+str(mid)+" received.")
def on_message(client, userdata, msg):
print("Message received on topic "+msg.topic+" with QoS "+str(msg.qos)+"and payload "+msg.payload)
if msg.payload == "check_status":
report_temp_humidity()
if msg.payload == "motor_run!":
print "Send command to RF"
ser.write("11.1111[S]")
# Define my function prototypes
def report_temp_humidity():
hum, temp = Adafruit_DHT.read_retry(sensor, sensor_pin)
mqttclient.publish("/my_topic1/", "Temperature "+ str(temp) + "`C", qos=0)
mqttclient.publish("/my_topic1/", "Humidity " + str(hum) + "%", qos=0)
# Define thread(loop) test
def loop_test(delay):
print(loop!)
time.sleep(1)
t1 = threading.Thread(target=loop_test, args=('1,',))
t1.start()
mqttclient = mqtt.Client()
# Assign event callbacks
mqttclient.on_connect = on_connect
mqttclient.on_publish = on_publish
mqttclient.on_subscribe = on_subscribe
mqttclient.on_message = on_message
# Connect
mqttclient.username_pw_set("dioty_user", "1234567")
mqttclient.connect("mqtt.dioty.co", 1883)
# Start subscription
mqttclient.subscribe("/my_topic1/")
# Publish a message
mqttclient.publish("/my_topic1/", "Hello World Message!")
# Loop
mqttclient.loop_forever()