Guru Meditation Error: Core 1 panic'ed (LoadProhibited) on WiPy 3.0



  • Hi everyone, i just got a pack of brand new wipys 3.0 with an expansion board 3.0. I was going through some of the tutorials and got a Guru Meditation Error when trying to set the board on deepsleep mode. I used the exact same little code showed on the webpage i linked before:

    import machine
    print("Wake up")
    machine.deepsleep(1000) #deepsleep 1 second
    print("this will never get printed!")
    

    Here's the output on REPL (i used VScode with Pymkr extension on ubuntu 20.04, i also updated the wipy's firmware to last version):

    Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.
    Core 1 register dump:
    PC      : 0x400ff1ba  PS      : 0x00060b30  A0      : 0x800e7e5b  A1      : 0x3ffd7020  
    A2      : 0x00000000  A3      : 0x00000001  A4      : 0x00000000  A5      : 0x00000009  
    A6      : 0x00008000  A7      : 0x8000ffff  A8      : 0x3f40f028  A9      : 0x3ffd6ff0  
    A10     : 0x00000000  A11     : 0x00000000  A12     : 0x3ff56960  A13     : 0x00000000  
    A14     : 0x3ffdcd30  A15     : 0x00000001  SAR     : 0x0000001e  EXCCAUSE: 0x0000001c  
    EXCVADDR: 0x00000000  LBEG    : 0x400eccc0  LEND    : 0x400ecd03  LCOUNT  : 0x00000000  
    
    ELF file SHA256: 0000000000000000000000000000000000000000000000000000000000000000
    
    Backtrace: 0x400ff1ba:0x3ffd7020 0x400e7e58:0x3ffd7040 0x400e5748:0x3ffd7060 0x4010186a:0x3ffd7090 0x400fdbf9:0x3ffd70c0 0x400fdc89:0x3ffd70e0 0x40109c57:0x3ffd7100 0x40101904:0x3ffd71a0 0x400fdbf9:0x3ffd7200 0x400fdc26:0x3ffd7220 0x400e12d9:0x3ffd7240 0x400e1425:0x3ffd72e0 0x400dfffe:0x3ffd7310
    
    ================= CORE DUMP START =================
    (...)
    ================= 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:0x3fff8020,len:8
    load:0x3fff8028,len:2128
    load:0x4009fa00,len:19760
    entry 0x400a05bc
    

    If there's anyone who might have an idea of how to solve this i would really aprecciate it, i really need this feature for my project to work. Thank you all.



  • That worked flawlessly! Thank u so much!


  • Global Moderator

    Hi,
    Have you tried clearing the NVS and CONFIG partitions together with the flash on the device using hte firmware updater tool (the options are listed in the advanced section). (Un)fortunately, I cannot reproduce the issue on the latest firmware, 1.20.2.r4

    Best,
    Gijs


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