Error called on mqtt.publish after a while of running the program - micropython

Question

Traceback (most recent call last):
File "<stdin>", line 115, in wind_Speed_Pulse
File "<stdin>", line 65, in publish_Wind_Speed
File "umqtt/simple.py", line 134, in publish
OSError: [Errno 104] ECONNRESET
'''Import Libraries'''
from machine import ADC, Pin
from umqtt.simple import MQTTClient
import micropython
import network
import time
'''Weather Sensor Constants'''
WIND_DIRECTION_PIN = 0
WIND_SPEED_PIN = 14
RAINFALL_AMOUNT_PIN = 12
'''Global Variables'''
pulse_duration = 0
start_time = 0
stop_time = 0
pulse_count = 0
state = 0
counter = 0
last_speed = 0
Ar = 1.585
B = 0.52225
'''MQTT Server Parameters'''
MQTT_CLIENT_ID = "Weather Station Vcom"
MQTT_BROKER = "broker.mqttdashboard.com"
MQTT_USER = ""
MQTT_PASSWORD = ""
MQTT_TOPIC_RAIN = "vcom/weather/rain"
MQTT_TOPIC_WIND = "vcom/weather/wind"
MQTT_TOPIC_DIR = "vcom/weather/direction"
'''WiFi Parameters'''
WIFI_NAME = "Embeded"
WIFI_PASSWORD = "password"
'''Connect ESP8266 to WiFi'''
def connect_WiFi():
print("Connecting to WiFi", end="")
sta_if = network.WLAN(network.STA_IF)
sta_if.active(True)
sta_if.connect(WIFI_NAME, WIFI_PASSWORD)
while not sta_if.isconnected():
print(".", end="")
time.sleep(0.1)
print(" Connected!")
'''Connect to MQTT Broker'''
def connect_MQTT_broker():
print("Connecting to MQTT server... ", end="")
client = MQTTClient(MQTT_CLIENT_ID, MQTT_BROKER, user=MQTT_USER, password=MQTT_PASSWORD)
client.connect()
print("Connected!")
return client
'''Publish Variables'''
def publish_Wind_Speed(wind_speed):
client.publish(MQTT_TOPIC_WIND, str(wind_speed))
def publish_Wind_Direction(direction):
client.publish(MQTT_TOPIC_DIR, direction)
def publish_check_Rain():
client.publish(MQTT_TOPIC_RAIN, "It's raining")
'''Interrupt called upon high pulse. Start and stop time when pulse is high. when clk starts,
pulse_count set to 1. When clk stops, pulse_count set to 0'''
def start_Calc_Time():
global start_time
global stop_time
global pulse_count
global pulse_duration
if(pulse_count == 0):
start_time = time.time_ns()
time.sleep(0.005)
pulse_count = 1
return
if(pulse_count == 1):
stop_time = time.time_ns()
time.sleep(0.005)
pulse_count = 0
return
'''Calculate the speed of the anemometer'''
def calculate_Speed(pulse_time):
if(pulse_time == 0):
return 0
else: speed = round(Ar * (1 / (pulse_time / 1000000000)) + B, 3)# / 1000 * 3600
time.sleep(0.01)
return speed
'''Calculate and publish wind Speed'''
def wind_Speed_Pulse(wind_sensor):
if(wind_sensor.value() == 1):
start_Calc_Time()
pulse_duration = start_time - stop_time
wind_speed = calculate_Speed(pulse_duration)
if(pulse_duration > 10000000):
time.sleep(0.01)
if(wind_speed>0 and wind_speed<70):
time.sleep(0.01)
print(wind_speed)
publish_Wind_Speed(wind_speed)
'''Calculate the direction of the wind and map to directions'''
def wind_Direction(dir_sensor):
if(dir_sensor>2.6 and dir_sensor<2.7):
direction = "north"
elif(dir_sensor>1.6 and dir_sensor<1.7):
direction = "north-east"
elif(dir_sensor>0.3 and dir_sensor<0.4):
direction = "east"
elif(dir_sensor>0.6 and dir_sensor<0.7):
direction = "south-east"
elif(dir_sensor>0.96 and dir_sensor<1.06):
direction = "south"
elif(dir_sensor>2.1 and dir_sensor<2.2):
direction = "south-west"
elif(dir_sensor>3.15 and dir_sensor<3.25):
direction = "west"
elif(dir_sensor < 2.95 or dir_sensor > 3.05):
direction = "north-east"
else: direction = "north-west"
time.sleep(3)
publish_Wind_Direction(direction)
'''Check if it is raining'''
def check_Rain():
publish_check_Rain()
time.sleep(0.02)
try:
connect_WiFi() #Connect to WiFi
client = connect_MQTT_broker() #Connect to MQTT Broker
while True:
wind_sensor = Pin(WIND_SPEED_PIN, Pin.IN)
dir_sensor = (ADC(WIND_DIRECTION_PIN).read()) * (3.3 / 1023.0)
rain_sensor = Pin(RAINFALL_AMOUNT_PIN, Pin.IN, Pin.PULL_UP)
wind_sensor.irq(trigger = Pin.IRQ_RISING, handler = wind_Speed_Pulse)
rain_sensor.irq(trigger = Pin.IRQ_FALLING, handler = check_Rain())
wind_Direction(dir_sensor)
except KeyboardInterrupt:
print("STOP!!")
The code is basically used to power a weather station with an ESP8266. Once the readings are measured and the speed is calculated, the speed is to be published to an MQTT broker called "broker.mqttdashboard.com". When I run the code, it starts of perfectly fine for around 5-10 minutes. After this, the error attached above starts occurring. I don't really know how to continue in this. I tried to check the file the error was occurring in and I didn't figure out why the error occurred.