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    Explore Pybytes | Official Documentation | Report a Firmware Bug/Issue | GitHub

    Core dump problem with firmware 1.10.1.b1 on lopy

    Scheduled Pinned Locked Moved Issues & Bugs
    lopycoredumpmqtt
    7 Posts 3 Posters 2.0k Views 3 Watching
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    • I Offline
      iotGeek
      last edited by

      Hi guys,

      sometimes I get a core dump after executing the following script:

      wlan.connect("NGNCC-Pub", auth=(WLAN.WPA2, "log1tech-wireless"), timeout=5000)
#wlan.connect("Netwerkerkennung fehlgeschlagen", auth=(WLAN.WPA2, "Gost@TheShell"), timeout=5000)

while not wlan.isconnected():  
    machine.idle()
print("Connected to Wifi\n")

#connect to mqtt broker
#client = MQTTClient(device_id, mqtt_broker,user=mqtt_user, password=mqtt_password, port=mqtt_port, ssl=True, ssl_params= {'cert_reqs':ssl.CERT_REQUIRED, 'ca_certs':'cert/cert.pem'})
client = MQTTClient(device_id, mqtt_broker, user=mqtt_user, password=mqtt_password, port=mqtt_port, ssl=True)

client.set_callback(subscribe_cb)
client.connect()
client.subscribe(topic="germany/ibm/ledcontrol")
print('Subscribed to topic')
client.publish(topic="youraccount/feeds/lights", msg="OFF")
#client.disconnect()

bluetooth = Bluetooth()
data = [0xFF, 0xFF, 0x00, 0x00, 0xFF]
#bluetooth.set_advertisement(name='Lopy')
bluetooth.set_advertisement(name="advert", manufacturer_data=bytes(data))
bluetooth.advertise(True)

      Output

      Connected to Wifi

Subscribed to topic
/Users/danicampora/Code/Espressif/IDF/esp-idf-20171106/components/freertos/./queue.c:702 (xQueueCreateCountingSemaphore)- assert failed!
abort() was called at PC 0x40089b33 on core 0

Backtrace: 0x4008cf0b:0x3ffffcb0 0x4008cf3c:0x3ffffcd0 0x40089b33:0x3ffffcf0 0x4017e7be:0x3ffffd10 0x401979e8:0x3ffffd30 0x401875d7:0x3ffffd50 0x4019a1e3:0x3ffffd70 0x40187f83:0x3ffffd90 0x40187fc3:0x3ffffdb0

================= CORE DUMP START =================
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AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgAAAA==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================= CORE DUMP END =================
Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff9028,len:8
load:0x3fff9030,len:1076
load:0x4009fa00,len:0
ho 12 tail 0 room 4
load:0x4009fa00,len:15344
entry 0x400a070c
Scanning for known wifi nets
Connected to NGNCC-Pub with IP address:192.168.188.39
MicroPython v1.8.6-839-g536c958c on 2017-11-15; LoPy with ESP32
Type "help()" for more information.

      Has someone a hint about to solve the problem?

      (sysname='LoPy', nodename='LoPy', release='1.10.1.b1', version='v1.8.6-839-g536c958c on 2017-11-15', machine='LoPy with ESP32', lorawan='1.0.0')

      Kind regard,
      Max

      L 1 Reply Last reply Reply Quote 0
      • L Offline
        livius @iotGeek
        last edited by

        here can help @daniel @administrators

        but without analysing dump
        can you put more prints comands

        e.g.

        print('Subscribed to topic')
client.publish(topic="youraccount/feeds/lights", msg="OFF")
#client.disconnect()
print('published')
bluetooth = Bluetooth()
print('bt created')
data = [0xFF, 0xFF, 0x00, 0x00, 0xFF]
#bluetooth.set_advertisement(name='Lopy')
print('bt data created')
bluetooth.set_advertisement(name="advert", manufacturer_data=bytes(data))
print('bt set_advertisement done')
bluetooth.advertise(True)
print('bt set_advertisement started')

        then you can see where exactly it occure
        and back with results
        also if you got more info where - then try put there

        time.sleep(1)

        look if help and back with result

        if above do not helped try

        time.sleep(1)
print('mem free before: ', print('mem free: ', str(gc.mem_free())))
gc.collect()
time.sleep(1)
print('mem free after: ', str(gc.mem_free()))

        think about people first, then computers

        1 Reply Last reply Reply Quote 0
        • I Offline
          iotGeek
          last edited by

          Thank you for the quick response!

          After adding the print statements it seems that the print('mem free after: ', str(gc.mem_free())) instruction is the last executed one before the core dump occurs.

          I had to upload the output go Github Gist , because the post content was flagged as spam by Akismet.com
          https://gist.github.com/maximilianschwab/3b0597933c606dd1b0c9d9fa7021a785

          L 1 Reply Last reply Reply Quote 0
          • L Offline
            livius @iotGeek
            last edited by livius

            @iotgeek
            Is this just before bluetooth = Bluetooth()?
            If yes, what if you change order:
            first instantiate bluetooth and next connect to wifi?

            and sorry for my simple mistake (copy paste), below should be:

            time.sleep(1)
print('mem free before: ', str(gc.mem_free()))
gc.collect()
time.sleep(1)
print('mem free after: ', str(gc.mem_free()))
time.sleep(1)

            think about people first, then computers

            1 Reply Last reply Reply Quote 0
            • A Offline
              Aris
              last edited by Aris

              I have the exact same error. It looks like I can't have an Secure MQTT client connected while the bluetooth module is initiated and vice versa. It is working ok if I don't use SSL.

              uname: (sysname='LoPy', nodename='LoPy', release='1.9.2.b2', version='v1.8.6-796-g489fafa0 on 2017-10-15', machine='LoPy with ESP32', lorawan='1.0.0')

              Sample code:

              from network import WLAN
from network import Bluetooth
from network import Server
from simplemqtt import MQTTClient
import time

_ble = Bluetooth()

wlan = WLAN(mode=WLAN.STA)
wlan.connect(ssid='testtest', auth=(WLAN.WPA2, 'testtestest'))
while not wlan.isconnected():
	time.sleep(1)

_client = MQTTClient("test11", "test", port=8883, ssl=True)
_client.connect() # Fail

              I will try to update the firmware and see what happens. As it is now, every time a run the above snippet it crashes. Also, nothing changes if I reverse the order of the initialization of Bluetooth and MQTT or with time.sleep() between the two.

              1 Reply Last reply Reply Quote 0
              • A Offline
                Aris
                last edited by

                Same problem with firmware version 1.10.2.b1

                1 Reply Last reply Reply Quote 0
                • A Offline
                  Aris
                  last edited by Aris

                  The same thing is happening when I replace the MQTT with the requests library and try to post to an HTTPS API. I believe the problem is th ussl.wrap_socket.

                  1 Reply Last reply Reply Quote 0

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