Test for wrong Wifi password?

Question

Maybe this is a dumb question, but is there a way to test for wrong Wifi password?

I know you can do WL_CONNECT to check if the password works, but is there a command for checking if the password is wrong? Not just by waiting.

• Marius Wanscher: my esp is trying to connect to the WiFi
• Marius Wanscher: i guess that makes my esp client
• Juraj: github.com/esp8266/Arduino/blob/…
• dandavis: there's no way to tell if a password is right or wrong other than by trying to use it.
• Sim Son: @dandavis but the WiFi class does not return the info even though it's available. It simply returns an error.

Answer 1

The information is available on SDK level. If you include #include "user_interface.h", you can use function wifi_station_get_connect_status(). It returns one of:

STATION_GOT_IP
STATION_NO_AP_FOUND
STATION_CONNECT_FAIL
STATION_WRONG_PASSWORD
STATION_IDLE

The WiFi.status() function uses function wifi_station_get_connect_status(), but returns WL_CONNECT_FAILED for STATION_WRONG_PASSWORD.

Answer 2

one can check for wrong password using the following code snippet

 if (WiFi.status() == WL_CONNECTED)
 {
 Serial.println("Connected successfully");
 }
 else if (WiFi.status() == WL_NO_SSID_AVAIL) 
 {
 Serial.println("Wifi network is not avaliable");
 }
 else
 {
 Serial.println("Password is not correct");
 }

more information can be found on GitHub here: https://github.com/aeonSolutions/aeonlabs-ESP32-C-Base-Firmware-Libraries