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Just squares in Serial Monitor

Q&A Forum › Category: ESP32 › Just squares in Serial Monitor
0 Vote Up Vote Down
ton van Vonderen asked 5 years ago

After uploading the code from the ESP32 Webserver sample (module 4, unit 2 of my Course) the Serial Monitor is supposed to show the IP number.

Instead it shows square blocks only.

Earlier, with Examples\Wifi\Wifiscan I had the same problem.

I use the DOIT ESP32 DEV KIT V1

Appreciate your help.

Antonio

5 Answers
0 Vote Up Vote Down
Sara Santos Staff answered 5 years ago

Hi.
You probably don’t have the right baud rate selected on the serial monitor.
Double-check that it is selected to 115200 baud at the bottom right corner.
Regards,
Sara

0 Vote Up Vote Down
ton van Vonderen answered 5 years ago

Thank you, Sara.
The baudrate was set incorrectly.
Examples\Wifi\Wifiscan runs ok now, however with the ESP32 Webserver sample a new issue has popped up.
The Wifi.status remains “Not Connected” and the Serial Monitor shows more and more dots.
This is the code where the programs “hangs”:
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(“.”);
Your suggestions are welcome.
Antonio

0 Vote Up Vote Down
Sara Santos Staff answered 5 years ago

Hi Antonio.
If you keep getting dots on the Serial Monitor that means that the ESP32 is not able to connect to your network.
This can be caused:

  • if you didn’t insert your network credentials
  • if you inserted your network credentials wrong (misspelling)
  • the ESP32 is very far away from your router and it is not able to pickup the wi-fi signal.

Regards,
Sara

0 Vote Up Vote Down
ton van Vonderen answered 5 years ago

Sara,
You were right again.
Misspelled network credential.
Thank you for your swift response.
Antonio

0 Vote Up Vote Down
Sara Santos Staff answered 5 years ago

Great!
I’ll mark this question as resolved.
If you need further help, you just need to open a new question in our forum.
Regards,
Sara

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