Erase saved WiFi access points

[hieuv]

I used WiFiMulti in the past to connect to different WiFi networks. Now I want to forget all of those WiFi configurations (the module keep trying to connect to a (now turned) bad AP).
I tried to follow #1494 and investigate these solutions:

ESP.eraseConfig(); *((int*)0) = 0;

ESP.eraseConfig(); ESP.reset();

Neither worked.

Do anyone know any better way to do this?

[tablatronix]

in code or permanently ?
You can use the esptool to erase_flash entirely.

[hieuv]

Ah, yes. after a while I decided to erase flash and it turned out to be the solution.

But now I have two questions.

1. I read some GitHub issues and learned that WiFiMulti is not actually using the flash space reserved for storing WiFi credentials. If so, how is it storing WiFi credentials in a non-volatile way?

2. If I want to erase WiFiMulti's stored credentials during run time, what are my options?

[tablatronix]

It stores the last successful ap but not all.
You can disable persistent to disaae autonsaving

[devyte]

@hieuv did calling persistent(false) address your issue?

[hieuv]

To be honest with you, this was so long ago that I do not remember any details anymore. I will see if I can reproduce the issue and see if the solution above fixes it.

[devyte]

@hieuv were you able to reproduce the issue?

[electron1979]

WiFi.disconect() worked for me first go.

ESP.eraseConfig then ESP.reset() OR ESP.eraseConfig() then ESP.restart() did not work for me.
I did not try the *((int*) 0) = 0; thing.

The answer to this question was covered here and here.

[devyte]

Closing due to age and previous comment.