Help with freezing d1mini & 7 segment displays

[mrbc42]

Hi all,
I have a D1-mini with MP 1.19.1installed. It has two 7 segment displays attached working as a clock but each in a different timezone. Essentially there is nothing that is not working in my code, the issue I am having is it will work for a few hours and then freeze. Was hoping someone would be able to point something out as to why the freeze / crash is happening and how to resolve it.
When the problem occurs, both clocks just stay on at the time and don't increment. A reboot solves it till the next time.
thanks for any suggestions

Using tm1637.py for the display driver - https://github.com/mcauser/micropython-tm1637

# Boot.py
import esp
esp.osdebug(None)
#import uos, machine, network
import machine, network

ssid = 'xxxx'
password = 'xxxx'

station = network.WLAN(network.STA_IF)

station.active(True)
station.connect(ssid, password)

# main.py
import tm1637
from machine import Pin
nsw = tm1637.TM1637(clk=Pin(12), dio=Pin(14))
qld = tm1637.TM1637(clk=Pin(04), dio=Pin(00))
import ntptime
import time
import utime
from umqtt.robust import MQTTClient

ntptime.settime()
nsw.brightness(0)
qld.brightness(0)

ntptime.host = "time.google.com"
x = 0

client_id = 'clock_test'
mqtt_server = '192.168.5.45'

def mqtt_connect():
    client = MQTTClient("client_id", mqtt_server, port=1883, keepalive=10)
    client.connect()
    return client

while True:
    client = mqtt_connect()
    nswclock_hour = utime.localtime(utime.mktime(utime.localtime()) + 11*3600)[3]
    nswclock_min = utime.localtime(utime.mktime(utime.localtime()) + 11*3600)[4]
    
    qldclock_hour = utime.localtime(utime.mktime(utime.localtime()) + 10*3600)[3]
    qldclock_min = utime.localtime(utime.mktime(utime.localtime()) + 10*3600)[4]
 
    if nswclock_min == 01 and x == 0:
        ntptime.settime()
        x += 1
    if nswclock_min == 02:
        x = 0
        
    nsw.numbers(nswclock_hour, nswclock_min)
    qld.numbers(qldclock_hour, qldclock_min)
    client.publish('clock_digits', str(nswclock_min))
    client.disconnect()
    time.sleep(30) 
    

[peterhinch]

I think it's likely that you're getting brief WiFi outages. See this guide. Also this resilient MQTT library.

[mrbc42]

Thanks, I will try this.

[mrbc42]

Hi Peter, I disabled all MQTT code and it ran fine for over 24 hours so your diagnosis was correct, thank you. I downloaded your library and compiled it to mpy and put it on the board but I am stuck with the config. Although your documentation is thorough, I cannot see a simple example where I can publish to my server.

Could you provide a small example or point to something I have missed? Using this code, I get an error. I can see in the docs there are many more config options so unsure why i am getting an error about 3 arguments.
thanks in advance.

from mqtt_as import MQTTClient
import uasyncio as asyncio

client_id = 'clock_test'
mqtt_server = '192.168.5.45'

def mqtt_connect():
    client = MQTTClient("client_id", mqtt_server, port=1883, keepalive=10)
    client.connect()
    return client

while True:
    client = mqtt_connect()

TypeError: function takes 3 positional arguments but 4 were given

[peterhinch]

This has a number of problems. The client constructor takes a single arg which is a dict. You set parameters by changing the dict entries before instantiating the client. But above all the library is asynchronous: applications must be written as asynchronous code using uasyncio. Please study the examples such as range.py.

As a new user I'd advise progressively adapting one of the existing examples rather than trying to start from scratch with new code.