Argon clearCredentials not working as expected?

Troubleshooting
1

Executing this code fails to clear credentials even though it indicates they were cleared:

    if(WiFi.clearCredentials()){
        Serial.println("ALL Wifi credentials have been removed!");
    }else{
        Serial.println("Could not clear credentials!");
    }
    WiFiAccessPoint ap[5];
    int found = WiFi.getCredentials(ap, 5);
    Serial.println("Credentials stored for:");
    for (int i = 0; i < found; i++) {
        Serial.println(ap[i].ssid);
    }

The getCredentials for loop lists all the credentials that were there prior to the clearCredentials command. Is there something I’m missing?

2

This is a current known issue which is going to be resolved in one of the next releases in 1.2.x line.

As a temporary workaround, ensure that WiFi is disconnected before attempting to clear the credentials:

WiFi.disconnect();
WiFi.clearCredentials();
1 Like
3

Hello,

Just to check, this code up here did not clear the credentials when I tried…
I fix it by turning the wifi off and stops the execution for 5seconds …that works while the issue is fixed, but is there a “cleaner” way?

WiFi.off();						
delay(5000);				
WiFi.clearCredentials();			// Clear previously stored credentials to proper work
WiFi.on();
4

@EPC, you need to turn the WiFi ON before you can clear the credentials.

1 Like
5

Hello,

Thanks for your answer. Actually it works with the code I typed up here and did not work before, when I turned the wifi ON before clearing the credentials…

I have just checked again. This works:

				WiFi.off();
				delay(5000);
				WiFi.on();
				ok = WiFi.clearCredentials();			// clear credentials

This code, also works:

				WiFi.off();
				delay(5000);
				ok = WiFi.clearCredentials();			// clear credentials

But this does not:

				WiFi.off();
				WiFi.on();
				ok = WiFi.clearCredentials();			// clear credentials

Neither this:

WiFi.on();
//some other instructions...
WiFi.disconnect();
ok = WiFi.clearCredentials();			// clear credentials

So it seems to be related to the delay when turning on or off and not that much with the wifi on…is that possible?
Is there a way to make it work without the delay?

6

Are you using SYSTEM_THREAD(ENABLED)? If so, WiFi.on() and WiFi.off() are asynchronous, so I’d guess the version without the delay fails because the disconnect from WiFi.off() has not completed yet.

7

Yes, the problem might be around there because the cyan LED does not stop breathing after wifi off… but I am not using SYSTEM_THREAD.

However I am using SEMI_AUTOMATIC mode. then i connect to the wifi in the setup and this clear credentials is inside loop. and then connect to a different wifi ssid.

8

In 1.4.4 Argon clearCredentials() always seems to return false even though it successfully clears the credentials.

9

On 1.5.2 clearcredtials() still returns false but actually does clear them.