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ESP8266 lags every 10-15min for a moment - evt: 7 error #7808

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ShineHunter opened this issue Jan 4, 2021 · 4 comments
Open

ESP8266 lags every 10-15min for a moment - evt: 7 error #7808

ShineHunter opened this issue Jan 4, 2021 · 4 comments

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@ShineHunter
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ShineHunter commented Jan 4, 2021 •
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Platform

  • Hardware: [ESP-12|
  • Core Version: [latest git date]
  • Development Env: [Arduino IDE|
  • Operating System: [Windows|

Settings in IDE

  • Module: |Nodemcu|
  • Flash Mode: [qio|
  • Flash Size: [4MB]
  • lwip Variant: |v2 Lower Memory|
  • Reset Method: [ck]
  • Flash Frequency: [40Mhz]
  • CPU Frequency: [80Mhz]
  • Upload Using: [SERIAL]
  • Upload Speed: [115200]

Problem Description

Every10-15 time the ESP stops answering to my smartphone. Debugging on Android says "connection refused". Then, after 1-2min it starts spamming connection info to the serial port and answering to phone and after maybe 10s works normally. I am also getting wifi evt: 7 - WIFI_EVENT_SOFTAPMODE_PROBEREQRECVED on serial port.
According to #2735 - it's a "[AP]err on recieved request"

... New data every 300ms ... evt: 7 ... Then updates very fast (every 50ms, not 300) for a moment.

The ESP is in AP mode.

Newest libraries.

MCVE Sketch

#include <ESP8266WiFi.h>
//#include <Ticker.h>
//#include <Wire.h>
//#include "PCF8574.h"
//#include <ESP8266WiFiGratuitous.h>


const char* ssid = "testwifi2";
const char* password = "esp8266";
IPAddress ip(192,168,0,1);
IPAddress gateway(192,168,0,1);
IPAddress subnet(255,255,255,0);


WiFiServer server(80);
//Ticker timer;

const byte interruptPin = 13;
int czas2 = 0;
int czas = 0;
int a=1;
boolean auto_manual = 0;
unsigned long currentTime=0;
unsigned long previousTime=0;
const long Timeout=200;

//PCF8574 PCF_01(0x20);


void setup()
{
  delay(10);
  //pinMode(interruptPin, INPUT_PULLUP);
  //attachInterrupt(digitalPinToInterrupt(interruptPin), handleInterrupt, FALLING);
  
  Serial.begin(115200);
  Serial.println();
  //PCF_01.begin();

  WiFi.softAPConfig(ip,gateway,subnet);
  WiFi.mode(WIFI_AP);
  WiFi.softAP(ssid, password,10,true,1);
  IPAddress myIP = WiFi.softAPIP();
  Serial.print("AP IP address: ");
  Serial.println(myIP);

  server.begin();
  //experimental::ESP8266WiFiGratuitous::stationKeepAliveSetIntervalMs();
  

  //timer.attach_ms(1,zegar);
}

// prepare a web page to be send to a client (web browser)
String prepareAnswer()
{
  String htmlPage;
  htmlPage.reserve(1024);               // prevent ram fragmentation
  htmlPage = F("HTTP/1.1 200 OK\r\n"
               "Content-Type: text/html\r\n"
               "Connection: close\r\n"  // the connection will be closed after completion of the response
               "\r\n"
               "<!DOCTYPE HTML>"
               "<html>");
  htmlPage += F("@"
              "300"
              "#" 
              "200"
              "$");
  htmlPage += F("</html>"
                "\r\n");
  return htmlPage;
}



void loop()
{
  WiFiClient client = server.available();
  // wait for a client (web browser) to connect
  if (client)
  {
    Serial.println("\n[Client connected]");
    while (client.connected())
    {
      yield();
      // read line by line what the client (web browser) is requesting
      if (client.available())
      {
        String line = client.readStringUntil('\r');
        Serial.print(line);
        // wait for end of client's request, that is marked with an empty line
        if (line.length() == 1 && line[0] == '\n')
        {
          client.println(prepareAnswer());
          break;
        }
      }
      
    }

    while (client.available()) {
      
      // but first, let client finish its request
      // that's diplomatic compliance to protocols
      // (and otherwise some clients may complain, like curl)
      // (that is an example, prefer using a proper webserver library)
      client.read();
      yield();
    }

    // close the connection:
    client.stop();
    Serial.println("[Client disconnected]");
  }
}

Debug Messages

[Client]
19:48:09.950 -> 0 HTTP/1.1
19:48:09.950 -> [Client disconnected]

19:48:58.765 wifi evt: 7 
19:49:00.627 wifi evt: 7 
19:49:00.627 wifi evt: 7 
19:49:12.179 wifi evt: 7

19:49:13.470 -> [Client]
19:49:13.470 -> 0 HTTP/1.1
19:49:13.470 -> [Client disconnected]

All program now. I have changed it, but still the same problem. I know only, that wifi ext 7 isnt connected with this lag.
@svdrummer
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As there is only part of the program here, it is hard to simulate.
A lot of problems show in the INCLUDE section and global setups.
It is hard to simulate your problem

@d-a-v
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Collaborator

d-a-v commented Jan 30, 2021

@ShineHunter please enable debug mode, and show the serial output when your issue occurs.
Also try to add WiFi.setSleepMode(WIFI_NONE_SLEEP);.

@TD-er
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Contributor

TD-er commented Feb 19, 2021

@ShineHunter please enable debug mode, and show the serial output when your issue occurs.
Also try to add WiFi.setSleepMode(WIFI_NONE_SLEEP);.

Should that make any difference?
The ESP is in AP mode according to the issue starter.

@ShineHunter
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No, I tried this, but it isn't make any difference. But... I solved this problem by changed http request to standard TCP protocole.

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@TD-er @d-a-v @ShineHunter @svdrummer