ESP8266 Community Forum

Posted: **Fri Dec 23, 2016 9:28 am**

schufti wrote:Maybe from some earlier sketch. WiFi.persistent(false) doesn't remove allready stored credentials neither replaces them or prevents reconnect with stored values; it just does not store the actually provided ones in flash on successful connect.

Change the PW on your WiFi and see if it still reconnects at startup.

Yes, that might be the reason. I will check that but only after New Year.

schufti wrote:It is not regarding the board you use, it is the Version of ESP-Package (look in board-manager).

Thank you, I'll check that too.

Regards

Posted: **Fri Dec 23, 2016 9:49 am**

schufti wrote:Maybe from some earlier sketch. WiFi.persistent(false) doesn't remove allready stored credentials neither replaces them or prevents reconnect with stored values; it just does not store the actually provided ones in flash on successful connect.
Change the PW on your WiFi and see if it still reconnects at startup.

IMHO WiFi.persistent(false) only direct SDK to NOT store credentials given in following WiFi.connect(). To remove already stored credentials inside SDK use WiFi.disconnect() ...

Posted: **Fri Dec 23, 2016 10:49 am**

ah, yes, that is exactly what I wrote; so where are the news?

and AFAIK wifi.disconnect does not clear successful credentials ...

Posted: **Fri Dec 23, 2016 10:55 am**

WiFi.disconnect will clear persisted settings only in persistent mode :

Code: Select all

bool ESP8266WiFiSTAClass::disconnect(bool wifioff) {
    bool ret;
    struct station_config conf;
    *conf.ssid = 0;
    *conf.password = 0;
 
    ETS_UART_INTR_DISABLE();
    if(WiFi._persistent) {
        wifi_station_set_config(&conf);
    } else { 
        wifi_station_set_config_current(&conf);
    }
    ret = wifi_station_disconnect();
    ETS_UART_INTR_ENABLE();

    if(wifioff) {
        WiFi.enableSTA(false);
    }
 
    return ret;
}

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