ESP32 WiFi - Intro To Events

Published at : 23 Dec 2025

Next-level WiFi handling on ESP32 starts with the conversion from status-driven to event-driven structures.

Espressif themselves put 'events' right at the top of their API documentation. Background reconnections are driven by events.

In the end, there are only two events we care about - getting the connection and losing the connection.

But the logging of everything proves valuable information in the meantime.

And, ultimately, events are what we want to use to monitor our connection state.

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🛠️ *What You'll Learn In This Video:*
- How to use events to signal the state of your WiFi connection
- How to use events to log your connection status in detail

⏱️ *Chapters:*
0:00 - Intro & Today's Plan
3:15 - Set Up WiFi for Diagnostics
4:39 - Put it in a Library
9:57 - Log Status Codes
12:12 - Introduce and Log Events
16:16 - Introduce and Log Disconnect Reasons
19:01 - Set the Stage for More
21:44 - Wrap It Up

🖥️ *Code Examples:*
- https://github.com/OhioIoT-ESP32-WiFi-Examples/Intro-To-Events

🔗 *Resources:*
- Espressif WiFi API: https://docs.espressif.com/projects/arduino-esp32/en/latest/api/wifi.html
- WiFiType.h: https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFi/src/WiFiType.h
- STA.cpp: https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFi/src/STA.cpp

*OhioIoT* is an IoT platform built and priced for small-scale IoT projects (https://www.ohioiot.com).


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