Possible Bug in WiFi library

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muller59
Posts: 5
Joined: Thu Jul 18, 2019 11:59 am

Possible Bug in WiFi library

Postby muller59 » Thu Jul 18, 2019 4:55 pm

Greetings,

I am trying to work with the WiFi.SoftAP class in arduino os an ESP32.

the problem lies in the IP address for the softIP access point.
i am requesting 192.168.2.1 via WiFi.softAPConfig()
- IPAddress ap_local_IP(192, 168, 2, 1);
- IPAddress ap_gateway(192, 168, 1, 254);
- IPAddress ap_subnet(255, 255, 255, 0);

WiFi.softAPConfig(ap_local_IP, ap_gateway, ap_subnet); is returning 192.168.4.1 as the IP address

the program and output below illustrates that behavior

Any help you can give will be highly appreciated

Code: Select all

/*
   Program: ESSP32-Wifi-Test
   Purpose: test wifi connectvity for esp32
*/

#include <WiFi.h>

#define DEBUG true      // Set to false to suppress debug output on serial

// Define placeholders for ssid and password. The contents are irrelevant, will be filled from /config.txt
char* ssid     = (char *) "YourWiFiNetworkName";      // The SSID (name) of the Wi-Fi network
char* password = (char *) "YourWifiPassword";         // The password of the Wi-Fi network


// Configuration Variables for the SoftAP name and IP.
const char* ap_ssid = "CaptivePortal";
const char* ap_password = "qwerty123";
IPAddress ap_local_IP(192, 168, 2, 1);
IPAddress ap_gateway(192, 168, 1, 254);
IPAddress ap_subnet(255, 255, 255, 0);


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);//Starting serial comunication
  Serial.println();

  WiFi.mode(WIFI_OFF);        //Prevents reconnection issue (taking too long to connect)
  delay(1000);
  WiFi.mode(WIFI_STA);

  WiFi.begin(ssid, password);

  Serial.print("Connecting to ");
  Serial.print(ssid);
  Serial.println(" ...");

  int i = 0;
  while (WiFi.status() != WL_CONNECTED  && i < 20) { // Wait 20 seconds for the Wi-Fi to connect
    delay(1000);  // wait 1 sec
    Serial.print(++i);
    Serial.print(' ');
  }
  Serial.println(' ');


  if (WiFi.status() == WL_CONNECTED ) {
    Serial.print("Local IP address = ");
    Serial.println(WiFi.localIP());
    Serial.print("Local Gateway address= ");
    Serial.println(WiFi.gatewayIP());
    Serial.print("Local DNS server address = ");
    Serial.println(WiFi.dnsIP(0));
    Serial.print("Local Subnet mask = ");
    Serial.println(WiFi.subnetMask());
  }

  // Spin up a local AP if not connected.
  if (WiFi.status() != WL_CONNECTED ) {
    WiFi.mode(WIFI_AP);
    Serial.println("");
    Serial.println("Configuring access point...");
    Serial.println("Setting soft-AP configuration ... ");
    WiFi.softAPConfig(ap_local_IP, ap_gateway, ap_subnet);
    if (DEBUG) Serial.println(WiFi.softAPIP());  //@@@

    Serial.println("Setting soft-AP ... ");
    WiFi.softAP(ap_ssid, ap_password);
    Serial.print("Soft-AP name = ");
    Serial.println(ap_ssid);
    Serial.print("Soft-AP password = ");
    Serial.println(ap_password);
    Serial.print("Soft-AP IP address = ");
    Serial.println(WiFi.softAPIP());
  }
}

void loop() {
  // put your main code here, to run repeatedly:

}
this is the output n the serial console (compile option debug=Verbose

Code: Select all

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:1100
load:0x40078000,len:9232
load:0x40080400,len:6400
entry 0x400806a8
ets Jun  8 2016 00:22:57

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:1100
load:0x40078000,len:9232
load:0x40080400,len:6400
entry 0x400806a8

[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 0 - WIFI_READY
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 14 - AP_STOP
Connecting to YourWiFiNetworkName ...
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
1 2 [D][WiFiGeneric.cpp:336] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:351] _eventCallback(): Reason: 201 - NO_AP_FOUND
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 0 - WIFI_READY
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
3 4 [D][WiFiGeneric.cpp:336] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:351] _eventCallback(): Reason: 201 - NO_AP_FOUND
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 0 - WIFI_READY
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
5 6 7 [D][WiFiGeneric.cpp:336] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:351] _eventCallback(): Reason: 201 - NO_AP_FOUND
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 0 - WIFI_READY
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
8 9 [D][WiFiGeneric.cpp:336] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:351] _eventCallback(): Reason: 201 - NO_AP_FOUND
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 0 - WIFI_READY
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
10 11 12 [D][WiFiGeneric.cpp:336] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:351] _eventCallback(): Reason: 201 - NO_AP_FOUND
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 0 - WIFI_READY
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
13 14 [D][WiFiGeneric.cpp:336] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:351] _eventCallback(): Reason: 201 - NO_AP_FOUND
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 0 - WIFI_READY
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
15 16 [D][WiFiGeneric.cpp:336] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:351] _eventCallback(): Reason: 201 - NO_AP_FOUND
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 0 - WIFI_READY
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
17 18 19 [D][WiFiGeneric.cpp:336] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:351] _eventCallback(): Reason: 201 - NO_AP_FOUND
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 0 - WIFI_READY
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 2 - STA_START
20  

Configuring access point...
Setting soft-AP configuration ... 
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 13 - AP_START
[D][WiFiGeneric.cpp:336] _eventCallback(): Event: 13 - AP_START
192.168.4.1
Setting soft-AP ... 
Soft-AP name = CaptivePortal
Soft-AP password = qwerty123
Soft-AP IP address = 192.168.4.1
Thanks for your time,

regards,

Rob
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boarchuz
Posts: 606
Joined: Tue Aug 21, 2018 5:28 am

Re: Possible Bug in WiFi library

Postby boarchuz » Fri Jul 19, 2019 2:33 am

The AP interface needs to have started before configuring it. To test if this is the problem, add a delay after mode(WIFI_AP). A better solution will be to call config() on the WIFI_EVENT_AP_START event.
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