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

[Sebastian San Martin]

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.

[Gijs]

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

[Sebastian San Martin]

That worked flawlessly! Thank u so much!