Auto(re)connect by using multiwifi problem about espasync_wifimanager

[khoih-prog]

Hi @seksity

I think you're doing something not correctly as I tested here and everything is working as expected.
You have to enter Config Portal and add 2 sets of WiFi Credentials for MultiWiFi to work correctly.
If you have only 1 router, you can enter the 2nd set of WiFi Credentials the same as the 1st.

The issue with 1 set of of WiFi Credentials is that the MultiWiFi will clear and won't reconnect to the lost router.
ESP32 will autoreset to be able to reconnect again.

I suggest you to use the better example Async_ConfigOnDoubleReset to have more control when to enter Config Portal.

Hereafter is the debug terminal

1. Working normally with 1 set of WiFi Credentials (SSID = HueNet1, password) entered in Config Portal

Starting Async_ConfigOnDoubleReset using LittleFS on ESP32_DEV
ESPAsync_WiFiManager v1.9.1
ESP_DoubleResetDetector v1.1.1
ESP Self-Stored: SSID = HueNet1, Pass = password
[WM] * Add SSID =  HueNet1 , PW =  password
Got ESP Self-Stored Credentials. Timeout 120s for Config Portal
[WM] LoadWiFiCfgFile 
[WM] OK
[WM] stationIP = 192.168.2.232 , gatewayIP = 192.168.2.1
[WM] netMask = 255.255.255.0
[WM] dns1IP = 192.168.2.1 , dns2IP = 8.8.8.8
Got stored Credentials. Timeout 120s for Config Portal
LittleFS Flag read = 0xD0D04321
No doubleResetDetected
Saving config file...
Saving config file OK
[WM] * Add SSID =  HueNet1 , PW =  password
[WM] * Add SSID =  HueNet1 , PW =  password
ConnectMultiWiFi in setup
[WM] ConnectMultiWiFi with :
[WM] * Flash-stored Router_SSID =  HueNet1 , Router_Pass =  password
[WM] * Add SSID =  HueNet1 , PW =  password
[WM] * Additional SSID =  HueNet1 , PW =  password
[WM] * Additional SSID =  HueNet1 , PW =  password
[WM] Connecting MultiWifi...
[WM] WiFi connected after time:  1
[WM] SSID: HueNet1 ,RSSI= -30
[WM] Channel: 2 ,IP address: 192.168.2.232
After waiting 10.75 secs more in setup(), connection result is connected. Local IP: 192.168.2.232
Stop doubleResetDetecting
Saving config file...
Saving config file OK
HH

2. Turn OFF WiFi router HueNet1. ESP32 resets itself

WiFi lost. Call connectMultiWiFi in loop
[WM] ConnectMultiWiFi with :
[WM] * Flash-stored Router_SSID =  HueNet1 , Router_Pass =  password
[WM] * Add SSID =  HueNet1 , PW =  password
[WM] * Additional SSID =  HueNet1 , PW =  password
[WM] * Additional SSID =  HueNet1 , PW =  password
[WM] Connecting MultiWifi...
[WM] WiFi not connected
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:1216
ho 0 tail 12 room 4
load:0x40078000,len:10944
load:0x40080400,len:6388
entry 0x400806b4

3. WiFi router HueNet1 turned ON. ESP32 auto-reconnect OK to previous routerHueNet1

Starting Async_ConfigOnDoubleReset using LittleFS on ESP32_DEV
ESPAsync_WiFiManager v1.9.1
ESP_DoubleResetDetector v1.1.1
ESP Self-Stored: SSID = HueNet1, Pass = password
[WM] * Add SSID =  HueNet1 , PW =  password
Got ESP Self-Stored Credentials. Timeout 120s for Config Portal
[WM] LoadWiFiCfgFile 
[WM] OK
[WM] stationIP = 192.168.2.232 , gatewayIP = 192.168.2.1
[WM] netMask = 255.255.255.0
[WM] dns1IP = 192.168.2.1 , dns2IP = 8.8.8.8
Got stored Credentials. Timeout 120s for Config Portal
LittleFS Flag read = 0xD0D04321
No doubleResetDetected
Saving config file...
Saving config file OK
[WM] * Add SSID =  HueNet1 , PW =  password
[WM] * Add SSID =  HueNet1 , PW =  password
ConnectMultiWiFi in setup
[WM] ConnectMultiWiFi with :
[WM] * Flash-stored Router_SSID =  HueNet1 , Router_Pass =  password
[WM] * Add SSID =  HueNet1 , PW =  password
[WM] * Additional SSID =  HueNet1 , PW =  password
[WM] * Additional SSID =  HueNet1 , PW =  password
[WM] Connecting MultiWifi...
[WM] WiFi connected after time:  1
[WM] SSID: HueNet1 ,RSSI= -29
[WM] Channel: 2 ,IP address: 192.168.2.232
After waiting 10.95 secs more in setup(), connection result is connected. Local IP: 192.168.2.232
Stop doubleResetDetecting
Saving config file...
Saving config file OK
HHHHHHHHHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHH

The examples are designed for MultiWiFi use cases, if you have only 1, it's better to use very old version or write the code not to use MultiWiFi, just reconnect to the only WiFi SSID you have.

[seksity]

@khoih-prog Thanks you. Latest I test with example "Async_ConfigOnDRD_ESP32_minimal.ino" to recap the minimal source code to works with 1 router, but I not sure how to add more code to support auto reconnect router?