Peripheral configurations for Seeed Studio Xiao ESP32S3 boards. More...

Detailed Description

Peripheral configurations for Seeed Studio Xiao ESP32S3 boards.

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

For detailed information about the peripheral configuration for ESP32-S3 boards, see section Common Peripherals.

Author: Isikcan 'Jon' Yilmaz can15.nosp@m.8@gm.nosp@m.ail.c.nosp@m.om

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 Channel Configuration
#define	ADC_GPIOS { GPIO1, GPIO2, GPIO3, GPIO4, GPIO5, GPIO6, GPIO7, GPIO8, GPIO9 }
	Declaration of GPIOs that can be used as ADC channels.

I2C configuration
For the Seeedstudio Xiao ESP32S3 board, 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 GPIO6
	SCL signal of I2C_DEV(0)

#define	I2C0_SDA GPIO5
	SDA signal of I2C_DEV(0)

PWM channel configuration
Two PWM devices are configured. These devices can use 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 { GPIO0, GPIO1, GPIO2 }
	Declaration of the channels for device PWM_DEV(0), at maximum PWM_CHANNEL_NUM_DEV_MAX.

#define	PWM1_GPIOS { GPIO21 }
	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 GPIO7
	FSPI SCK (pin FSPICLK)

#define	SPI0_MISO GPIO8
	FSPI MISO (pin FSPIQ)

#define	SPI0_MOSI GPIO9
	FSPI MOSI (pin FSPID)

#define	SPI0_CS0 GPIO3
	FSPI CS0 (pin FSPICS0)

UART configuration
ESP32-S3 provides 3 UART interfaces at maximum: UART_DEV(0) uses fixed standard configuration. UART_DEV(1) is not used. UART_DEV(2) 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 }

Declaration of GPIOs that can be used as ADC channels.

All pins of ADC1 are declared as ADC channels. Keep in mind that GPIO10 is not broken out and used as VBAT signal. GPIO3 is a strapping pin if EFUSE_STRAP_JTAG_SEL is set, see Strapping pins.

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 46 of file periph_conf.h.

◆ I2C0_SCL

#define I2C0_SCL GPIO6

SCL signal of I2C_DEV(0)

Definition at line 66 of file periph_conf.h.

◆ I2C0_SDA

#define I2C0_SDA GPIO5

SDA signal of I2C_DEV(0)

Definition at line 69 of file periph_conf.h.

◆ I2C0_SPEED

#define I2C0_SPEED I2C_SPEED_FAST

I2C bus speed of I2C_DEV(0)

Definition at line 63 of file periph_conf.h.

◆ PWM0_GPIOS

#define PWM0_GPIOS { GPIO0, GPIO1, GPIO2 }

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

Definition at line 92 of file periph_conf.h.

◆ PWM1_GPIOS

#define PWM1_GPIOS { GPIO21 }

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

Definition at line 100 of file periph_conf.h.

◆ SPI0_CS0

#define SPI0_CS0 GPIO3

FSPI CS0 (pin FSPICS0)

Definition at line 127 of file periph_conf.h.

◆ SPI0_CTRL

#define SPI0_CTRL FSPI

FSPI is used as SPI_DEV(0)

Definition at line 115 of file periph_conf.h.

◆ SPI0_MISO

#define SPI0_MISO GPIO8

FSPI MISO (pin FSPIQ)

Definition at line 121 of file periph_conf.h.

◆ SPI0_MOSI

#define SPI0_MOSI GPIO9

FSPI MOSI (pin FSPID)

Definition at line 124 of file periph_conf.h.

◆ SPI0_SCK

#define SPI0_SCK GPIO7

FSPI SCK (pin FSPICLK)

Definition at line 118 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 143 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 142 of file periph_conf.h.