Peripheral configurations for ESP32-S2-DevKit boards. More...

Detailed Description

Peripheral configurations for ESP32-S2-DevKit boards.

The peripheral configurations in this file can be used for Espressif ESP32-S2-DevKitx boards that use one of the following modules:

ESP32-S2-MINI-1x module (ESP32-S2-DevKitM-1x board)
ESP32-S2-SOLO module (ESP32-S2-DevKitC-1x board)
ESP32-S2-WROOM module (ESP32-S2-Saola-1 board)
ESP32-S2-WROVER module (ESP32-S2-Saola-1R board)

Any modifications required for specific applications can be overridden by application-specific board configuration.

For detailed information about the peripheral configuration for ESP32-S2 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 { GPIO1, GPIO2, GPIO3, GPIO4, GPIO5, GPIO6, GPIO7, GPIO8, GPIO9, GPIO10 }
	Declaration of GPIOs that can be used as ADC channels.

#define	DAC_GPIOS { GPIO17, GPIO18 }
	Declaration of GPIOs that can be used as DAC 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 GPIO9
	SCL signal of I2C_DEV(0)

#define	I2C0_SDA GPIO8
	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 { GPIO11, GPIO12, GPIO13, GPIO14 }
	Declaration of the channels for device PWM_DEV(0), at maximum PWM_CHANNEL_NUM_DEV_MAX.

#define	PWM1_GPIOS { GPIO15, GPIO16 }
	Declaration of the channels for device PWM_DEV(1), 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 GPIO36
	FSPI SCK (pin FSPICLK)

#define	SPI0_MISO GPIO37
	FSPI MISO (pin FSPIQ)

#define	SPI0_MOSI GPIO35
	FSPI MOSI (pin FSPID)

#define	SPI0_CS0 GPIO34
	FSPI CS0 (pin FSPICS0)

UART configuration
ESP32-S2 provides 2 UART interfaces at maximum: UART_DEV(0) uses fixed standard configuration. UART_DEV(1) is not used.
#define	UART0_TXD GPIO43
	direct I/O pin for UART_DEV(0) TxD, can't be changed

#define	UART0_RXD GPIO44
	direct I/O pin for UART_DEV(0) RxD, can't be changed

Macro Definition Documentation

◆ ADC_GPIOS

#define ADC_GPIOS { GPIO1, GPIO2, GPIO3, GPIO4, GPIO5, GPIO6, GPIO7, GPIO8, GPIO9, GPIO10 }

Declaration of GPIOs that can be used as ADC channels.

For generic boards, almost all ADC pins of ADC1 that are 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.

◆ DAC_GPIOS

#define DAC_GPIOS { GPIO17, GPIO18 }

Declaration of GPIOs that can be used as DAC channels.

For generic boards the 2 DAC lines GPIO17 and GPIO18 are declared as DAC channels.

Note: As long as the GPIOs listed in DAC_GPIOS are not initialized as DAC channels with the dac_init function, they can be used for other purposes. GPIO18 is also used for the RGB-LED.

Definition at line 75 of file periph_conf.h.

◆ I2C0_SCL

#define I2C0_SCL GPIO9

SCL signal of I2C_DEV(0)

Definition at line 94 of file periph_conf.h.

◆ I2C0_SDA

#define I2C0_SDA GPIO8

SDA signal of I2C_DEV(0)

Definition at line 97 of file periph_conf.h.

◆ I2C0_SPEED

#define I2C0_SPEED I2C_SPEED_FAST

I2C bus speed of I2C_DEV(0)

Definition at line 91 of file periph_conf.h.

◆ PWM0_GPIOS

#define PWM0_GPIOS { GPIO11, GPIO12, GPIO13, GPIO14 }

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

Definition at line 120 of file periph_conf.h.

◆ PWM1_GPIOS

#define PWM1_GPIOS { GPIO15, GPIO16 }

Declaration of the channels for device PWM_DEV(1), at maximum PWM_CHANNEL_NUM_DEV_MAX.

These PWM channels cannot be used if an external 32 kHz crystal is connected to the board at GPIO15 and GPIO16.

Definition at line 132 of file periph_conf.h.

◆ SPI0_CS0

#define SPI0_CS0 GPIO34

FSPI CS0 (pin FSPICS0)

Definition at line 161 of file periph_conf.h.

◆ SPI0_CTRL

#define SPI0_CTRL FSPI

FSPI is used as SPI_DEV(0)

Definition at line 149 of file periph_conf.h.

◆ SPI0_MISO

#define SPI0_MISO GPIO37

FSPI MISO (pin FSPIQ)

Definition at line 155 of file periph_conf.h.

◆ SPI0_MOSI

#define SPI0_MOSI GPIO35

FSPI MOSI (pin FSPID)

Definition at line 158 of file periph_conf.h.

◆ SPI0_SCK

#define SPI0_SCK GPIO36

FSPI SCK (pin FSPICLK)

Definition at line 152 of file periph_conf.h.

◆ UART0_RXD

#define UART0_RXD GPIO44

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

Definition at line 176 of file periph_conf.h.

◆ UART0_TXD

#define UART0_TXD GPIO43

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

Definition at line 175 of file periph_conf.h.