Peripheral configurations for Wemos S2 mini boards. More...

Detailed Description

Peripheral configurations for Wemos S2 mini boards.

The peripheral configurations in this file can be used for Espressif Wemos S2 mini boards.

Author: Benjamin Valentin benja.nosp@m.min..nosp@m.valen.nosp@m.tin@.nosp@m.ml-pa.nosp@m..com

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 { GPIO3, GPIO1, GPIO2, GPIO4, GPIO5, GPIO6, GPIO8, 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
Only I2C interface I2C_DEV(0) is used. Note 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 GPIO35
	SCL signal of I2C_DEV(0)

#define	I2C0_SDA GPIO33
	SDA signal of I2C_DEV(0)

PWM channel configuration
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 { GPIO13, GPIO14, GPIO15 }
	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 GPIO7
	FSPI SCK (pin FSPICLK)

#define	SPI0_MISO GPIO9
	FSPI MISO (pin FSPIQ)

#define	SPI0_MOSI GPIO11
	FSPI MOSI (pin FSPID)

#define	SPI0_CS0 GPIO12
	FSPI CS0 (pin FSPICS0)

UART configuration
ESP32-S2 provides 2 UART interfaces at maximum: UART_DEV(0) uses Wemos standard pinout. UART_DEV(1) is not used.
#define	UART0_TXD GPIO39
	direct I/O pin for UART_DEV(0) TxD

#define	UART0_RXD GPIO37
	direct I/O pin for UART_DEV(0) RxD

Macro Definition Documentation

◆ ADC_GPIOS

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

Declaration of GPIOs that can be used 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 42 of file periph_conf.h.

◆ DAC_GPIOS

#define DAC_GPIOS { GPIO17, GPIO18 }

Declaration of GPIOs that can be used 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.

Definition at line 53 of file periph_conf.h.

◆ I2C0_SCL

#define I2C0_SCL GPIO35

SCL signal of I2C_DEV(0)

Definition at line 72 of file periph_conf.h.

◆ I2C0_SDA

#define I2C0_SDA GPIO33

SDA signal of I2C_DEV(0)

Definition at line 75 of file periph_conf.h.

◆ I2C0_SPEED

#define I2C0_SPEED I2C_SPEED_FAST

I2C bus speed of I2C_DEV(0)

Definition at line 69 of file periph_conf.h.

◆ PWM0_GPIOS

#define PWM0_GPIOS { GPIO13, GPIO14, GPIO15 }

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

Definition at line 94 of file periph_conf.h.

◆ SPI0_CS0

#define SPI0_CS0 GPIO12

FSPI CS0 (pin FSPICS0)

Definition at line 121 of file periph_conf.h.

◆ SPI0_CTRL

#define SPI0_CTRL FSPI

FSPI is used as SPI_DEV(0)

Definition at line 109 of file periph_conf.h.

◆ SPI0_MISO

#define SPI0_MISO GPIO9

FSPI MISO (pin FSPIQ)

Definition at line 115 of file periph_conf.h.

◆ SPI0_MOSI

#define SPI0_MOSI GPIO11

FSPI MOSI (pin FSPID)

Definition at line 118 of file periph_conf.h.

◆ SPI0_SCK

#define SPI0_SCK GPIO7

FSPI SCK (pin FSPICLK)

Definition at line 112 of file periph_conf.h.

◆ UART0_RXD

#define UART0_RXD GPIO37

direct I/O pin for UART_DEV(0) RxD

Definition at line 136 of file periph_conf.h.

◆ UART0_TXD

#define UART0_TXD GPIO39

direct I/O pin for UART_DEV(0) TxD

Definition at line 135 of file periph_conf.h.