After have frozen modules error "Activated UART(0) for REPL"

[BOB63]

Hi ,
trying to solve the issues face on my previous post viewtopic.php?f=16&t=5346 I've frozen a couple of modules into the ESP8266 firmware , apparently without problems, but then when I try to use REPL I got the following error :
PYB: soft reboot
Activated UART(0) for REPL
MicroPython v1.9.4-683-gd94aa57 on 2018-11-02; ESP module with ESP8266
Type "help()" for more information.

whilke with a previous version of firmware (MicroPython v1.9.4-8-ga9a3caad0 on 2018-05-11) works.

As suggested in the documentation I've added these line of code in the boot.py to address the REPL output on UART0 but without solve the problem:

from machine import UART
import os
uart = UART(0, 115200)
os.dupterm(uart)

What could be the reason , considering that I've the same issue if I compile without the frozen modules ?

Just as additional info .... ,
to set up the enviroment to compile the firmware I've followed this tutorial from Adafruit https://learn.adafruit.com/building-and ... d-firmware using VM created with Vagrant .

To rebuild the firmware with frozen modules for ESP8266 I've just run the make on the ESP8266 port directory and not as mpy-cross.

Thanks for any suggestion.

[BOB63]

Any idea ?