esp32-wroom-32/include/board.h

Board specific definitions for generic ESP32-WROOM-32 boards.

This configuration can be used for a large set of ESP32 boards that use an ESP32-WROOM-32 module and simply break out all GPIOs to external pads without having any special hardware or interfaces on-board. Examples are Espressif’s EPS32-DEVKIT or NodeMCU-ESP32S and a large number of clones.

For detailed information about the configuration of ESP32 boards, see section .

Note

Most definitions can be overridden by an .

BUTTON0_PIN

Generic ESP32 boards have a BOOT button, which can be used as normal button during normal operation. 

1
GPIO0

Since the GPIO0 pin is pulled up, the button signal is inverted, i.e., pressing the button will give a low signal.