Preferences

In this tutorial, we will see how to store data in flash memory of ESP32 using the Preferences.h library and Arduino IDE. We can use this library to read and write data on the ESP32’s flash memory permanently. Flash memory is like a long-lasting memory that remembers things, so it’s perfect for saving important information. … Read more

In this tutorial, we will see how to retain or remember the last state of GPIO pins on the ESP32 board after a reset using the Preferences library in Arduino IDE. Normally, when the ESP32 loses power or restarts, the previous state of the output is lost, causing potential disruptions in the system. However, with … Read more