Wifi Unknown Error 0x0101 after flashing a new version of micropython.

[frazzmatazz]

I flashed an updated version of micropython for my generic "ESP32-D0WDQ6-V3 (revision v3.1)" sold as a Lolin D32 ESP-WROOM32 4MB. And now I'm getting this error:

>>> import network
>>> sta_if = network.WLAN(network.STA_IF)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
RuntimeError: Wifi Unknown Error 0x0101

If I use the reset pin the main.py runs and crashes at that sta_if = network.WLAN(network.STA_IF), with a bit more detail:

>>> ets Jul 29 2019 12:21:46

rst:0x1 (POWERON_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:2
load:0x3fff0030,len:4892
ho 0 tail 12 room 4
load:0x40078000,len:14896
load:0x40080400,len:4
load:0x40080404,len:3372
entry 0x400805b0
E (6294) wifi:Expected to init 10 rx buffer, actual is 4
E (6304) wifi_init: Failed to deinit Wi-Fi driver (0x3001)
E (6304) wifi_init: Failed to deinit Wi-Fi (0x3001)
Traceback (most recent call last):
  File "main.py", line 202, in <module>
  File "main.py", line 153, in syncntp
  File "main.py", line 80, in doconnect
RuntimeError: Wifi Unknown Error 0x0101
MicroPython v1.24.0 on 2024-10-25; Generic ESP32 module with ESP32
Type "help()" for more information.

I flashed it with the generic firmware from here: https://micropython.org/download/ESP32_GENERIC/
I think it was originally working with v1.24 but trying to go back to that version doesn't fix it. I am doing
esptool --chip esp32 erase_flash
then
esptool --chip esp32 --baud 460800 write_flash 0x1000 ./ESP32_GENERIC-20241025-v1.24.0.bin

chip_id says:
Chip is ESP32-D0WDQ6-V3 (revision v3.1)
Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None
Crystal is 40MHz
MAC: 2c:bc:bb:92:1c:60

Any ideas?
Feels like a wrong firmware error. But I'm stuck.

[KnorkFox]

Could you please try V1.23 ?

Fox

[shariltumin]

You may be running out of memory. Please check https://github.com/orgs/micropython/discussions/15161

[frazzmatazz]

Ah, thank you. I was running out of memory I think. Triggered by a combo of micropython update and updating screen/font code, with too many fonts in ram.

I'm using the SSD1309 library with xglcd_font and 4 fonts of varying sizes, which on disk occupy 128K so must take lots of ram. I have it working now after substituting the largest font, but I think I'll have to restructure the code to load the largest 2 fonts as the user changes settings, rather than load all into memory and change which variable it points to. 😆

gc.memfree() is now showing between 45k and 82k free in the main loop with gc.enable(). Is that ok?

[frazzmatazz]

I tried newer micropython versions: v1.25.0 fails to run the code with this error:

Traceback (most recent call last):
  File "<stdin>", line 130
SyntaxError: invalid syntax for integer with base 0

and line 130 is the first line of this except block, possibly it is failing to open the alarmdata.txt due to memory problem too:

alarmhour = [-1]*7   # setting default alarms to -1 so it doesn't go off at midnight
alarmminute = [-1]*7


try:
   with open("alarmdata.txt", 'r') as savefile:
        alarmhour = ujson.loads(savefile.readline())
        alarmminute = ujson.loads(savefile.readline())

        #print(alarmhour)
        #print(alarmminute)
        savefile.close()

except:
     alarmhour[0] = 07  # Monday
     alarmminute[0] = 30
     alarmhour[1] = 06  # Tuesday
     alarmminute[1] = 30

But v1.24.1 (edit: sometimes!) works with the largest font substituted for a slightly smaller font. mem_free shows 44k to 82k
(edit: going back to v1.23 till I sort program structure.)