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board.h File Reference

Board definitions for ESP32-C3-DevKit boards. More...

Detailed Description

Board definitions for ESP32-C3-DevKit boards.

The board definitions in this file are valid for Espressif ESP32-C3-DevKitx boards that use one of the following modules:

  • ESP32-C3-MINI-1x module (ESP32-C3-DevKitM-1 board)
  • ESP32-C3-WROOM-02x module (ESP32-C3-DevKitC-02 board)

Since the number of GPIOs and their possible uses on the ESP32-C3 are quite limited, these board definitions can also be used for most other ESP32-C3 boards. Any modifications required for specific applications can be overridden by application-specific board configuration.

Author
Gunar Schorcht gunar.nosp@m.@sch.nosp@m.orcht.nosp@m..net

Definition in file board.h.

#include <stdint.h>
#include "board_common.h"
+ Include dependency graph for board.h:
+ This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Button pin definitions

#define BTN0_PIN   GPIO9
 Default button GPIO pin definition.
 
#define BTN0_MODE   GPIO_IN_PU
 Default button GPIO mode definition.
 
#define BTN0_INT_FLANK   GPIO_FALLING
 Default interrupt flank definition for the button GPIO.
 
#define BUTTON0_PIN   BTN0_PIN
 Definition for compatibility with previous versions.
 

LED (on-board) configuration

ESP32-C3-DevKit boards have a SK68XXMINI-HS smart RGB-LED connected to GPIO8 on-board.

The WS281x driver module ws281x can be used to control it.

#define WS281X_PARAM_PIN   (GPIO8)
 GPIO pin connected to the data pin.
 
#define WS281X_PARAM_NUMOF   (1U)
 Number of LEDs chained.
 

Macro Definition Documentation

◆ BTN0_INT_FLANK

#define BTN0_INT_FLANK   GPIO_FALLING

Default interrupt flank definition for the button GPIO.

Definition at line 62 of file board.h.

◆ BTN0_MODE

#define BTN0_MODE   GPIO_IN_PU

Default button GPIO mode definition.

Since the GPIO of the button is pulled up with an external resistor, the mode for the GPIO pin has to be GPIO_IN.

Definition at line 56 of file board.h.

◆ BTN0_PIN

#define BTN0_PIN   GPIO9

Default button GPIO pin definition.

ESP32-C3-DevKit boards have a BOOT button connected to GPIO9, which can be used as button during normal operation. Since the GPIO9 pin is pulled up, the button signal is inverted, i.e., pressing the button will give a low signal.

Definition at line 48 of file board.h.

◆ BUTTON0_PIN

#define BUTTON0_PIN   BTN0_PIN

Definition for compatibility with previous versions.

Definition at line 68 of file board.h.

◆ WS281X_PARAM_NUMOF

#define WS281X_PARAM_NUMOF   (1U)

Number of LEDs chained.

Definition at line 83 of file board.h.

◆ WS281X_PARAM_PIN

#define WS281X_PARAM_PIN   (GPIO8)

GPIO pin connected to the data pin.

Definition at line 80 of file board.h.