MicroPython Forum (Archive)

Good evening

With this simple code with ESP32 DEVKIT V1 board ( 2 units tested) with esp32-20210902-v1.17.bin

import network
wlan= network.WLAN(network.AP_IF)
wlan.config(essid='MyESP', password='12345678')
wlan.active(True)


In console the following message appears : Connection lost(EOF) Use Stop/Resrtart to reconnect

Previous micropython v1.15 , v1.14, v1.13 exhibit same error

This code works without any problem with ESP32 TTGO T-Display board with esp32-20210902-v1.17.bin

Thanks for any idea about this

Can you connect to your network using STA mode?

I have tested STA with

import network
wlan= network.WLAN(network.STA_IF)
wlan.active(True)

Same error message
So in AP and STA mode wlan.active(True) instruction do crash

Tomorrow i will test Wifi using C code to see if DEVKIT V1 board Wifi works

Look at the wlan.status() codes

I have tested wifi connexion with esp32 Arduino IDE

Using Wifi library

#include <WiFi.h>
void setup()
{ WiFi.begin("myNetwork","myPassword");
serial.print(WiFi.status());
}
void loop()
Serial.print(".");
}

I can see my ESP32 board connected to myNetwork, but ESP32 never reaches the print instruction serial.print(WiFi.status()); or Serial.print("."); in loop()

This code works as expected with TTGO T-DISPLAY board

So seems to be hardware failure in DEVKIT V1 board ?

n console the following message appears : Connection lost(EOF) Use Stop/Resrtart to reconnect

Are you using an IDE? Are you connecting using a USB cable?

Can you run rshell on a Linux platform?

With micropython i am using Thonny connected to ESP32 board with USB cable

The guy who developed Thonny seems to respond to related emails here often. I have seen threads here about issues people have had using it.

Good luck

From my point of view it's not related to Thonny as with IDE Arduino ESP32 i get Wifi freeze

OK. Have you got a link to the exact boards? I have about 10 of these units but just realised that mine are ESP32_Devkitc_v4. Maybe they have done something different with putting the strapping ports in the right configuration and/or how boot is handled via the USB port.