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[GH-ISSUE #1288] ESP32 compile fail with newest 2.0 ESP tool chain. (Fixed using branch esp32s2) #1103

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opened 2026-02-28 01:28:32 +03:00 by kerem · 6 comments

kerem commented

2026-02-28 01:28:32 +03:00

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Originally created by @chlor3 on GitHub (Sep 5, 2021).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1288

As I was under the impression esp32s2 was behind master I ended up fixing this myself only to discover the fix already in commit a9507c9. I recommend merging commit a9507c9 into Master as it fixes compile fail with newest 2.0.0 tool-chain build for ESP32.

Basic Infos

Hardware

WiFimanager Branch/Release: Master

Esp8266/Esp32: Esp32

Hardware: DOIT ESP32 DEVKIT V1

Core Version: Release v2.0.3

Originally created by @chlor3 on GitHub (Sep 5, 2021). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1288 As I was under the impression esp32s2 was behind master I ended up fixing this myself only to discover the fix already in commit a9507c9. I recommend merging commit a9507c9 into Master as it fixes compile fail with newest 2.0.0 tool-chain build for ESP32. ### Basic Infos #### Hardware WiFimanager Branch/Release: Master Esp8266/Esp32: Esp32 Hardware: DOIT ESP32 DEVKIT V1 Core Version: Release v2.0.3

kerem

2026-02-28 01:28:32 +03:00

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kerem commented

2026-02-28 01:28:32 +03:00

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@touchgadget commented on GitHub (Sep 6, 2021):

I think one more change is needed. I am using master + cherry-pick a9507c9 + the following change. I can compile the Basic example for ESP32, ESP32-C3, and ESP32-S2. Espressif Arduino ESP32 board package 2.0.0.

diff --git a/WiFiManager.cpp b/WiFiManager.cpp
index 1dd199e..305ed11 100644
--- a/WiFiManager.cpp
+++ b/WiFiManager.cpp
@@ -3529,7 +3529,7 @@ void WiFiManager::WiFiEvent(WiFiEvent_t event,arduino_event_info_t info){
         WiFi.reconnect();
       #endif
   }
-  else if(event == SYSTEM_EVENT_SCAN_DONE){
+  else if(event == ARDUINO_EVENT_SC_SCAN_DONE){
     uint16_t scans = WiFi.scanComplete();
     WiFi_scanComplete(scans);
   }

Tested using Arduino IDE 1.8.16

ESP32-C3 DevKitM-1 v1.0, Basic example

First time (no saved credentials) AP scan/select works.
The saved credentials are used after power cycling the board.
All looks good.

ESP32-S2-Saola-1_v1.2, Basic example

First time (no saved SSID/password) AP works fine.
The saved credentials are used after power cycling the board.
All looks good.

@touchgadget commented on GitHub (Sep 6, 2021): I think one more change is needed. I am using master + cherry-pick a9507c9 + the following change. I can compile the Basic example for ESP32, ESP32-C3, and ESP32-S2. Espressif Arduino ESP32 board package 2.0.0. ``` diff --git a/WiFiManager.cpp b/WiFiManager.cpp index 1dd199e..305ed11 100644 --- a/WiFiManager.cpp +++ b/WiFiManager.cpp @@ -3529,7 +3529,7 @@ void WiFiManager::WiFiEvent(WiFiEvent_t event,arduino_event_info_t info){ WiFi.reconnect(); #endif } - else if(event == SYSTEM_EVENT_SCAN_DONE){ + else if(event == ARDUINO_EVENT_SC_SCAN_DONE){ uint16_t scans = WiFi.scanComplete(); WiFi_scanComplete(scans); } ``` Tested using Arduino IDE 1.8.16 ESP32-C3 DevKitM-1 v1.0, Basic example * First time (no saved credentials) AP scan/select works. * The saved credentials are used after power cycling the board. * All looks good. ESP32-S2-Saola-1_v1.2, Basic example * First time (no saved SSID/password) AP works fine. * The saved credentials are used after power cycling the board. * All looks good.

kerem commented

2026-02-28 01:28:32 +03:00

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@tablatronix commented on GitHub (Sep 7, 2021):

Yeah they changed the events its a pita i have been trying to figure out how to make it backwards compatible

@tablatronix commented on GitHub (Sep 7, 2021): Yeah they changed the events its a pita i have been trying to figure out how to make it backwards compatible

kerem commented

2026-02-28 01:28:32 +03:00

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@tablatronix commented on GitHub (Sep 8, 2021):

I am working on this, I merged master into branch for the moment, I need to get my pio working again for new idf afaik there is no arduino 2.0 support yet and my soala wont build for some reason

@tablatronix commented on GitHub (Sep 8, 2021): I am working on this, I merged master into branch for the moment, I need to get my pio working again for new idf afaik there is no arduino 2.0 support yet and my soala wont build for some reason

kerem commented

2026-02-28 01:28:32 +03:00

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@tablatronix commented on GitHub (Sep 9, 2021):

@chlor3
@touchgadget

Can you try the s2 branch for both ESPlibs and S2/C3 etc
This should work seamlessly for 1.x and 2.x and IDF

Master has been merged into esp32s2 also

@tablatronix commented on GitHub (Sep 9, 2021): @chlor3 @touchgadget Can you try the s2 branch for both ESPlibs and S2/C3 etc This should work seamlessly for 1.x and 2.x and IDF Master has been merged into esp32s2 also

kerem commented

2026-02-28 01:28:32 +03:00

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@touchgadget commented on GitHub (Sep 9, 2021):

@tablatronix
Summary: esp32s2 branch works fine using arduino-esp32 board packages 1.0.6 and 2.0.0.

Tested using Arduino IDE 1.8.16 and arduino-esp32 board package 2.0.0. By the way, the 2.0.0 package is now on the default/stable release. I am using this one although I assume it is the same as the 2.0.0 package on the dev release.

Test steps using the Basic example

First time (no saved credentials) AP scan/select works.
The saved credentials are used after power cycling the board.

ESP32 generic dev, ESP32 Dev Module, All OK.
ESP32-C3 DevKitM-1 v1.0, ESP32C3 Dev Module, All OK.
ESP32-S2-Saola-1_v1.2, ESP32S2 Dev Module, all OK.

Tests repeated using board package 1.0.6.

ESP32 generic dev, ESP32 Dev Module, All OK.
ESP32-C3 and ESP32-S2 are not supported by this version.

@touchgadget commented on GitHub (Sep 9, 2021): @tablatronix Summary: esp32s2 branch works fine using arduino-esp32 board packages 1.0.6 and 2.0.0. Tested using Arduino IDE 1.8.16 and arduino-esp32 board package 2.0.0. By the way, the 2.0.0 package is now on the default/stable release. I am using this one although I assume it is the same as the 2.0.0 package on the dev release. Test steps using the Basic example * First time (no saved credentials) AP scan/select works. * The saved credentials are used after power cycling the board. 1. ESP32 generic dev, ESP32 Dev Module, All OK. 2. ESP32-C3 DevKitM-1 v1.0, ESP32C3 Dev Module, All OK. 3. ESP32-S2-Saola-1_v1.2, ESP32S2 Dev Module, all OK. Tests repeated using board package 1.0.6. 1. ESP32 generic dev, ESP32 Dev Module, All OK. 2. ESP32-C3 and ESP32-S2 are not supported by this version.

kerem commented

2026-02-28 01:28:32 +03:00

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@tablatronix commented on GitHub (Sep 10, 2021):

It is not available for pio yet

@tablatronix commented on GitHub (Sep 10, 2021): It is not available for pio yet