/* Ask ESP to join AP. 
This, just sends join command. It is not a big problem if network interface is not configured. */
err_t espif_join_ap(const char *ssid, const char *pass)
/* Ask ESP to join AP. 
This, just sends join command. It is not a big problem if network interface is not configured. */
err_t espif_join_ap(const char *ssid, const char *pass)
{
        return ERR_IF;
    }
    log_info(ESPIF, "Joining AP %s:*(%d)", ssid, strlen(pass));
    esp_operating_mode = ESPIF_RUNNING_MODE;
    return espif_tx_msg_clientconfig_v2(ssid, pass);
}