esp8266 softap waiting all the time

[lou-lan]

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Basic Infos

• [x] This issue complies with the issue POLICY doc.
• [x] I have read the documentation at readthedocs 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.
• [ ] If there is a stack dump, I have decoded it.
• [x] I have filled out all fields below.

Platform

• Hardware: [ESP-12]
• Core Version: [latest]
• Development Env: [Arduino IDEr]
• Operating System: [MacOS]

Settings in IDE

• Module: [Generic ESP8266 Module]
• 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: [SERIAL]
• Upload Speed: [115200] (serial upload only)

Problem Description

Iphone connection softap has been waiting for a long time, arduino firmware doesn't work well. Nodemcu firmware can work.

MCVE Sketch

#include <Arduino.h>
#include <ESP8266WiFi.h>

IPAddress local_IP(192,168,4,1);
IPAddress gateway(192,168,4,10);
IPAddress subnet(255,255,255,0);

void setup() {
    Serial.begin(115200);
    Serial.println();

    for(uint8_t t = 3; t > 0; t--) {
        Serial.printf("[SETUP] BOOT WAIT %d...\n", t);
        Serial.flush();
        delay(1000);
    }

    Serial.print("Setting soft-AP configuration ... ");
    Serial.println(WiFi.softAPConfig(local_IP, gateway, subnet) ? "Ready" : "Failed!");

    Serial.print("Setting soft-AP ... ");
    Serial.println(WiFi.softAP("A1234", "12345678") ? "Ready" : "Failed!");

    Serial.print("Soft-AP IP address = ");
    Serial.println(WiFi.softAPIP());
}

void loop() {
}

Debug Messages

wifi evt: 7
wifi evt: 7
err already associed!
station: f8:95:ea:86:9b:ee leave, AID = 1
rm 1
wifi evt: 6
wifi evt: 7

wifi evt: 7
wifi evt: 7
wifi evt: 7
add 1
aid 1
station: f8:95:ea:86:9b:ee join, AID = 1
wifi evt: 5
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 9
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7

[lou-lan]

[arihantdaga]

I too faced this issue sometimes with ios.

[d-a-v]

error -13 is lwIP-v2's connection aborted. We'd need to reproduce this error.

@arihantdaga sometimes it works ?

@lou-lan would you be able to provide a tcpdump or wireshark capture of the traffic during this error (or @arihantdaga) ?

[arihantdaga]

@d-a-v It works most of the time. Few of my clients said that it did not work in their iphones and they sent similar screenshots and while talking to them they explained the same. Currently i don't have tcpdump, but i'll try to reproduce it in my place and gather logs this time.

[lou-lan]

@d-a-v I don't have tcpdump for iOS system, but I can provide operating video and code. Is it possible that the ios system detects the security of softap?

[d-a-v]

Best is to run tcpdump on your router if you can, or use the integrated packet capture/dump facility directly in the esp8266 (#6518 not merged yet, or the old simple NetDump)

[tablatronix]

What version of IOS ? 17C5046a might have fixes for this

[arihantdaga]

In my case, the problem seems to be related with adc reads. If we read adc in every loop, then its affecting the wifi performance. Related to https://arduino.stackexchange.com/questions/19787/esp8266-analog-read-interferes-with-wifi