ESP8266 Community Forum

- Fri Feb 12, 2021 1:46 pm #90499 I Connect to a saved Wifi. it works fine. Then i disconnect and try to reconnect with the same connect method as before, but reconnect is always connection result WL_IDLE_STATUS = 0

Why? What's wrong?

Here is my Code:

Code: Select all#include <ESP8266WiFi.h>
#include <WiFiManager.h>

WiFiManager wm;

void setup() {
  Serial.begin(115200);
  delay(100);
  Serial.println("");
  WiFi.mode(WIFI_STA); //  Station Mode
  Serial.print("try to connect to wifi ");
  Serial.println("SSID: " + WiFi.SSID());
  startWiFi(); // Connect
  delay(2000);
  wm.disconnect();
  Serial.println("Wifi Disconnected");
  Serial.println("");
  delay(2000);
  Serial.print("Try to RECONNECT to wifi ");
  Serial.println("SSID: " + WiFi.SSID());
  startWiFi(); // Connect
}

void loop() {
//
}


// -------------------------------------------------------------------------
//                               startWiFi
// -------------------------------------------------------------------------
   //for reference:
    //typedef enum {
    //    WL_NO_SHIELD = 255,   // for compatibility with WiFi Shield library
    //    WL_IDLE_STATUS = 0,
    //    WL_NO_SSID_AVAIL = 1,
    //    WL_SCAN_COMPLETED = 2,
    //    WL_CONNECTED = 3,
    //    WL_CONNECT_FAILED = 4,
    //    WL_CONNECTION_LOST = 5,
    //    WL_DISCONNECTED = 6
    //} wl_status_t;
void startWiFi() {
    Serial.print("Is WiFi Configured and saved: ");
    Serial.println((String)wm.getWiFiIsSaved() ? "YES" : "NO");

    if (!WiFi.isConnected()) {
        Serial.println("SSID: " + WiFi.SSID());
        int conn_result = WiFi.waitForConnectResult(10000); // connect try it for 10 seconds
        Serial.print("conn_result: ");
        Serial.println(conn_result, DEC);
    }
    if (WiFi.isConnected()) {
        Serial.println("Wifi is connected!");
    }
    else {
        Serial.println("Wifi is NOT connected!");
    }
   
    Serial.println("");
}


And here the results:
try to connect to wifi SSID: InProg1
Is WiFi Configured and saved: YES
SSID: InProg1
conn_result: 3
Wifi is connected!

Wifi Disconnected

Try to RECONNECT to wifi SSID: InProg1
Is WiFi Configured and saved: YES
SSID: InProg1
conn_result: 0
Wifi is not connected!

The conn_result 0 comes promptly not after 10 seconds.

Last edited by Tertius21 on Sun Feb 14, 2021 9:18 am, edited 1 time in total.

- Sun Feb 14, 2021 8:13 am #90510 no suggestions?

- Sun Feb 14, 2021 8:40 am #90511 Well it seems like you forget to call .connect() method. In the loop() you call WiFi.disconnect() but never any .connect() so you are waiting for nothing in waitForConnectResult() IMO...

- Sun Feb 14, 2021 9:20 am #90512 i have the code a little bit changed for better understanding.

This:

Code: Select allWiFi.waitForConnectResult(10000); // connect try it for 10 seconds


connects to the wifi.