Picocom + ESP8266 + Arduino IDE Issue

[tsimur]

Today I tried micropython for the first time. I followed the steps described in the documentation to flash the board with the latest firmware. I suppose I succeeded, but something bothers me. The documentation suggests using the picocom /dev/ttyUSB0 -b115200 command to get the REPL. When I do this, picocom does not show anything until I launch the Arduino IDE and open the serial port in it. After this, >> appears in picocom and I can successfully use the interpreter. If any of you have encountered this and found a solution, I'd greatly appreciate your insights.

Used commands:

esptool.py --port /dev/ttyUSB0 erase_flash 567 esptool.py --port /dev/ttyUSB0 --baud 115200 write_flash --flash_size=detect 0 ~/Downloads/ESP8266_GENERIC-20240222-v1.22.2.bin

# Alternative try for flashing
esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=detect -fm dout 0 ~/Downloads/ESP8266_GENERIC-20240222-v1.22.2.bin

picocom -b 115200 -r -l /dev/ttyUSB0

OS: Ubuntu2204
BOARD: No-name board from Aliexpress with ESP8266MOD
FLASH: 4MB

[shariltumin]

Have you try pressing the Enter key a few times? This will give you the prompt >>>.

You can also try:

$ tio /dev/ttyUSB0
[tio 21:50:26] tio v1.32
[tio 21:50:26] Press ctrl-t q to quit
[tio 21:50:26] Connected

>>> 
>>> 
>>> 

or

$ miniterm  /dev/ttyUSB0 115200
--- Miniterm on /dev/ttyUSB0  115200,8,N,1 ---
--- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---

>>> 
>>> 

or better

$ mpremote u0
Connected to MicroPython at /dev/ttyUSB0
Use Ctrl-] or Ctrl-x to exit this shell

>>> 
>>> 

[tsimur]

Yes I have tried pressing the Enter key a few times.
I tried tio and mpremote which you suggested. The situation remains the same, but there is one difference. These tools do not continue to work after I close the Arduino serial port. Perhaps information about this difference will be useful.

[tsimur]

I also have tried using a different instance of the board and a different PC to eliminate the influence of the OS environment and accidental failure of the board. The result is the same.

[shariltumin]

What are your account settings? Do you belong to the dialout group?