Peripheral configurations for ESP32-C3-DevKit boards. More...

Detailed Description

Peripheral configurations for ESP32-C3-DevKit boards.

The peripheral configurations 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 peripheral configurations can also be used for most other ESP32-C3 boards. Any modifications required for specific applications can be overridden by application-specific board configuration.

For detailed information about the peripheral configuration for ESP32-C3 boards, see section Common Peripherals.

Note: Most definitions can be overridden by an application-specific board configuration if necessary.

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

Definition in file periph_conf.h.

#include <stdint.h>
#include "periph_conf_common.h"

Include dependency graph for periph_conf.h:

Go to the source code of this file.

ADC and DAC channel configuration
#define	ADC_GPIOS { GPIO0, GPIO1, GPIO2, GPIO3, GPIO4, GPIO5 }
	Declaration of GPIOs that can be used as ADC channels.

I2C configuration
For generic boards, only one I2C interface I2C_DEV(0) is defined. The GPIOs listed in the configuration are only initialized as I2C signals when module `periph_i2c` is used. Otherwise they are not allocated and can be used for other purposes.
#define	I2C0_SPEED I2C_SPEED_FAST
	I2C bus speed of I2C_DEV(0)

#define	I2C0_SCL GPIO4
	SCL signal of I2C_DEV(0)

#define	I2C0_SDA GPIO5
	SDA signal of I2C_DEV(0)

PWM channel configuration
For generic boards, two PWM devices are configured. These devices contain all GPIOs that are not defined as I2C, SPI or UART for this board. Generally, all outputs pins could be used as PWM channels. Note As long as the according PWM device is not initialized with the `pwm_init`, the GPIOs declared for this device can be used for other purposes.
#define	PWM0_GPIOS { GPIO3, GPIO4 }
	Declaration of the channels for device PWM_DEV(0), at maximum PWM_CHANNEL_NUM_DEV_MAX.

SPI configuration
Note The GPIOs listed in the configuration are first initialized as SPI signals when the corresponding SPI interface is used for the first time by either calling the `spi_init_cs` function or the `spi_acquire` function. That is, they are not allocated as SPI signals before and can be used for other purposes as long as the SPI interface is not used.
#define	SPI0_CTRL FSPI
	FSPI is used as SPI_DEV(0)

#define	SPI0_SCK GPIO6
	FSPI SCK (pin FSPICLK)

#define	SPI0_MISO GPIO2
	FSPI MISO (pin FSPIQ)

#define	SPI0_MOSI GPIO7
	FSPI MOSI (pin FSPID)

#define	SPI0_CS0 GPIO10
	FSPI CS0 (pin FSPICS0)

UART configuration
ESP32-C3 provides 2 UART interfaces at maximum: UART_DEV(0) uses fixed standard configuration. UART_DEV(1) is not used.
#define	UART0_TXD GPIO21
	direct I/O pin for UART_DEV(0) TxD, can't be changed

#define	UART0_RXD GPIO20
	direct I/O pin for UART_DEV(0) RxD, can't be changed

Macro Definition Documentation

◆ ADC_GPIOS

#define ADC_GPIOS { GPIO0, GPIO1, GPIO2, GPIO3, GPIO4, GPIO5 }

Declaration of GPIOs that can be used as ADC channels.

For generic boards, all ADC pins that have broken out are declared as ADC channels.

Note: As long as the GPIOs listed in ADC_GPIOS are not initialized as ADC channels with the adc_init function, they can be used for other purposes.

Definition at line 61 of file periph_conf.h.

◆ I2C0_SCL

#define I2C0_SCL GPIO4

SCL signal of I2C_DEV(0)

Definition at line 80 of file periph_conf.h.

◆ I2C0_SDA

#define I2C0_SDA GPIO5

SDA signal of I2C_DEV(0)

Definition at line 83 of file periph_conf.h.

◆ I2C0_SPEED

#define I2C0_SPEED I2C_SPEED_FAST

I2C bus speed of I2C_DEV(0)

Definition at line 77 of file periph_conf.h.

◆ PWM0_GPIOS

#define PWM0_GPIOS { GPIO3, GPIO4 }

Declaration of the channels for device PWM_DEV(0), at maximum PWM_CHANNEL_NUM_DEV_MAX.

Definition at line 106 of file periph_conf.h.

◆ SPI0_CS0

#define SPI0_CS0 GPIO10

FSPI CS0 (pin FSPICS0)

Definition at line 134 of file periph_conf.h.

◆ SPI0_CTRL

#define SPI0_CTRL FSPI

FSPI is used as SPI_DEV(0)

Definition at line 122 of file periph_conf.h.

◆ SPI0_MISO

#define SPI0_MISO GPIO2

FSPI MISO (pin FSPIQ)

Definition at line 128 of file periph_conf.h.

◆ SPI0_MOSI

#define SPI0_MOSI GPIO7

FSPI MOSI (pin FSPID)

Definition at line 131 of file periph_conf.h.

◆ SPI0_SCK

#define SPI0_SCK GPIO6

FSPI SCK (pin FSPICLK)

Definition at line 125 of file periph_conf.h.

◆ UART0_RXD

#define UART0_RXD GPIO20

direct I/O pin for UART_DEV(0) RxD, can't be changed

Definition at line 149 of file periph_conf.h.

◆ UART0_TXD

#define UART0_TXD GPIO21

direct I/O pin for UART_DEV(0) TxD, can't be changed

Definition at line 148 of file periph_conf.h.