WiFi connection problems

pjg · February 26, 2021, 12:28pm

Have you seen all this post ?

https://www.reddit.com/r/esp8266/comments/gvtppa/cannot_connect_to_asus_rtac86u/

github.com/esp8266/Arduino

Delayed or no connection to WiFi

opened 06:09PM - 11 May 20 UTC

closed 05:00PM - 12 May 20 UTC

dmelgar

### Basic Infos - [X] This issue complies with the [issue POLICY doc](https:/…/github.com/esp8266/Arduino/blob/master/POLICY.md). - [X] I have read the documentation at [readthedocs](https://arduino-esp8266.readthedocs.io/en/latest) and the issue is not addressed there. - [X] I have tested that the issue is present in current master branch (aka latest git). - [X] I have searched the issue tracker for a similar issue. - [x] If there is a stack dump, I have decoded it. - [X] I have filled out all fields below. #### Platform - Hardware: [ESP-8266 Nodemcu] - Core Version: [release 2.7.1] - Development Env: [Arduino IDE|Platformio same behavior on both] - Operating System: [MacOS] ### Settings in IDE - Module: [Nodemcu] - Flash Mode: [qio|dio|other] - Flash Size: [4MB] - lwip Variant: [v1.4|v2 Lower Memory|Higher Bandwidth] - Reset Method: [ck|nodemcu] - Flash Frequency: [40Mhz] - CPU Frequency: [80Mhz] - Upload Using: [OTA|SERIAL - same behavior] - Upload Speed: [500000] (serial upload only) ### Problem Description Detailed problem description goes here. Attempting to connect to ASUS RT-AC86U router running latest firmware. Does not connect to WiFi, or connects after extended period of time. Often appears to time out at 4 minutes, uses self assigned IP address. This problem does not occur with version 2.5.1 of this same library. Only occurred after updating library. If I go back to 2.5.1 it connects within a couple of seconds. Router using WAP2-personal. - channel bandwidth 20/40mhz - auto control channel, currently 8 All other settings set to default. Returns connection status: 6 ### [MCVE](https://stackoverflow.com/help/mcve) Sketch ```cpp #include <Arduino.h> void setup() { Serial.begin(500000); Serial.setTimeout(2000); // Wait for serial to initialize. while (!Serial) { } Serial.println("Serial debug should be running"); // Connect to WiFi network WiFi.mode(WIFI_STA); wifiConnectHandler = WiFi.onStationModeGotIP(onWifiConnect); wifiDisconnectHandler = WiFi.onStationModeDisconnected(onWifiDisconnect); WiFi.disconnect(); delay(1); WiFi.begin(ssid.c_str(), pw.c_str()); //--------temp while (WiFi.waitForConnectResult() != WL_CONNECTED) { Serial.printf("Connection status: %d\n", WiFi.status()); WiFi.printDiag(Serial); delay(1000); Serial.print("."); } } void loop() { } ``` ### Debug Messages ``` Debug messages go here ```

https://www.asus.com/support/FAQ/1042475/