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

    WLAN init = core dumped?

    Scheduled Pinned Locked Moved Issues & Bugs
    lopy
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    • M Offline
      madsdk
      last edited by

      I would like to be able to disable Wi-Fi, and then reenable it at a later point in time (e.g. on user input from the serial console when debugging). To achieve that I try the following:

      from network import WLAN
wlan = WLAN()
wlan.deinit()

      This disables the Wi-Fi and everything is fine... until I do:

      from network import WLAN
wlan = WLAN()
wlan.init(mode=WLAN.AP, ...)

      This makes my LoPy do a core dump and restart... Does anybody know how to fix that? If I can't reenable Wi-Fi on demand, I can't disable it at all, since I'd loose the ability to upload new software to ;-)

      Best regards,
      Mads

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

        @madsdk

        same for me on Wipy2.0 and 1.6.3 firmware

        >>> from network import WLAN
>>> wlan = WLAN()
>>> wlan.deinit()
I (2273759) wifi: station: 7c:dd:90:4c:b5:9f leave, AID = 1
I (2273759) wifi: n:6 0, o:6 1, ap:6 1, sta:255 255, prof:6
I (2273760) wifi: eb_mgmt_s_free_list i = 2

I (2273760) wifi: eb_tx_bar_free_list i = 0

I (2273760) wifi: eb_rx_block_free_list i = 0

I (2273760) wifi: Deinit lldesc rx mblock:10
I (2273760) wifi: Deinit lldesc rx ampdu len mblock:7
I (2273760) wifi: Deinit lldesc rx ampdu entry mblock:4
>>> wlan = WLAN()
>>> wlan.init(mode=WLAN.AP)
Guru Meditation Error of type LoadProhibited occurred on core  0. Exception was unhandled.
Register dump:
PC      : 0x4018e631  PS      : 0x00060230  A0      : 0x8010af4a  A1      : 0x3ffcfdd0  
A2      : 0x00000000  A3      : 0x3ffc864c  A4      : 0x3ffd3c94  A5      : 0x00000000  
A6      : 0x00000000  A7      : 0x3ffd0080  A8      : 0x8018e62c  A9      : 0x3ffcfd90  
A10     : 0x00000001  A11     : 0x3ffcc7c8  A12     : 0x00000c00  A13     : 0x00000000  
A14     : 0x00000016  A15     : 0x00000000  SAR     : 0x0000001a  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x0000000c  LBEG    : 0x00000000  LEND    : 0x00000000  LCOUNT  : 0x00000000  

Backtrace: 0x4018e631:0x3ffcfdd0 0x4010af4a:0x3ffcfe00 0x401043ce:0x3ffcfe30 0x400dec7b:0x3ffcfe50 0x400dedc8:0x3ffcff00 0x400dedee:0x3ffcff40 0x400ee6ed:0x3ffcff80 0x400eabe0:0x3ffcffb0 0x400eac48:0x3ffcffd0 0x400f6730:0x3ffcfff0 0x400ee686:0x3ffd0090 0x400eabe0:0x3ffd0110 0x400eac0d:0x3ffd0130 0x400d8849:0x3ffd0150 0x400d8ae3:0x3ffd01f0 0x400d7cb3:0x3ffd0230

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

rst:0xc (SW_CPU_RESET),boot:0x33 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:QIO, clock div:2
load:0x3fff9010,len:8
load:0x3fff9018,len:248
load:0x40078000,len:4056
load:0x4009fc00,len:920
entry 0x4009fde4
I (1577) wifi: frc2_timer_task_hdl:3ffd49a4, prio:22, stack:2048
I (1593) wifi: Init lldesc rx mblock:10
I (1593) wifi: Init lldesc rx ampdu len mblock:7
I (1593) wifi: Init lldesc rx ampdu entry mblock:4
I (1595) wifi: pp_task_hdl : 3ffdbae0, prio:23, stack:8192
I (1600) wifi: sleep disable
I (2589) wifi: mode : softAP (24:0a:c4:00:6e:c3)
17.2189 100599.7 252.1453
wifi_ap
MicroPython v1.8.6-463-g468b9d27 on 2017-02-16; WiPy with ESP32
Type "help()" for more information.
>>>

        think about people first, then computers

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

          Mine started doing that today. Was running fine and then started doing that. Different PC though.

          Guru Meditation Error of type IllegalInstruction occurred on core 0. Exception was unhandled.
          Register dump:
          PC : 0x40191680 PS : 0x00060730 A0 : 0x800816ba A1 : 0x3ffcd300
          A2 : 0x0000f424 A3 : 0x00000000 A4 : 0x000f4240 A5 : 0x0000000c
          A6 : 0x0000002a A7 : 0x3ffd49a0 A8 : 0x00064e94 A9 : 0x00000000
          A10 : 0x00000014 A11 : 0xf4240000 A12 : 0x0072c000 A13 : 0x00000000
          A14 : 0x00000002 A15 : 0x3ffd4970 SAR : 0x00000014 EXCCAUSE: 0x00000000
          EXCVADDR: 0x00000000 LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000

          Backtrace: 0x40191680:0x3ffcd300 0x400816ba:0x3ffcd320 0x40120fe8:0x3ffcd340 0x400d821c:0x3ffcd360 0x400e0e37:0x3ffcd390 0x4011ca3a:0x3ffcd3b0 0x40085a38:0x3ffcd3d0

          1 Reply Last reply Reply Quote 0
          • M Offline
            madsdk
            last edited by

            I just tried it using the most recent firmware 1.6.5.b1 and it seems to work just fine now 👍

            1 Reply Last reply Reply Quote 0

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