Core dump problem with firmware 1.10.1.b1 on lopy



  • 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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    AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==
    EEr+P2Bh/j98Y/4/
    YGH+PxBj/j8AAAAAaMn9P6w//D8QSv4/pD/8Pw4AAABw1P0/cNT9PxBK/j9o1P0/
    CwAAAIBL/j9JUlFzAAAAAAAAAAAAAAAAAAAAAHxj/j8AAAAAIQAGAAsAAAAAAAAA
    AAAAAKxi/j8AAAAAAAAAAAAAAACAB/0/6Af9P1AI/T8AAAAAAAAAAAEAAAAAAAAA
    qFFAPwAAAAAIjAlAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgAAAA==
    OCwIQMSfCEAwDwYA53EOgCBi/j9E1P0/wGL+P5DU/T8AAAAAmNT9PwAAAADEnwiA
    AGL+PwAAAAD/////CEL8PwAAAADYCvw/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    AAAAADEuCEAAAAAAQLkIQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    AAAAAAAAAAAAAAAAAAAAAAAAAAAJAAAApaWlpaWlpaUczg2AYGL+PzBL/D/AYv4/
    AAAAABkAAAClpaWlpaWlpf////9gYv4/CE78P8Bi/j8AAAAAAQAAACRL/D/II/w/
    AAAAAPBi/j8kS/w/AAAAABBj/j8AAAAAAAAAAAAAAAAAAAAAJEv8PwAAAAAAAAAA
    AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACkTPw/
    pEz8PwAAAADAYv4/ABQAAAAAAAAAAAAAAAAAAAAAAACkTPw/EEr+P////38AAAAA
    AAAAABBj/j8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    AAAAAAAAAAAcY/4/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
    AAAAAAAAAAAAAAAA
    ================= 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



  • 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.



  • Same problem with firmware version 1.10.2.b1



  • 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.



  • @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)
    


  • 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



  • 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()))
    

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