Peripheral MCU configuration for Wemos LOLIN D32 Pro. More...

Detailed Description

Peripheral MCU configuration for Wemos LOLIN D32 Pro.

Wemos LOLIN D32 Pro is a development board that uses the ESP32-WROVER module which has a built-in 4 MByte SPI RAM. Most important features of the board are

Micro-SD card interface
LCD interface
SPI RAM 4 MByte

Furthermore, most GPIOs are broken out for extension.

When the TFT display is connected, add

USEMODULE += esp_lolin_tft

to the makefile of the application to use the according default board configuration.

For detailed information about the configuration of ESP32 boards, see section Common Peripherals.

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

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 { GPIO36, GPIO39, GPIO34, GPIO35, GPIO32, GPIO33 }
	Declaration of GPIOs that can be used as ADC channels.

#define	DAC_GPIOS { GPIO25, GPIO26 }
	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 GPIO22
	SCL signal of I2C_DEV(0) [UEXT1].

#define	I2C0_SDA GPIO21
	SDA signal of I2C_DEV(0) [UEXT1].

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 { GPIO0, GPIO2 }
	PWM channels for device PWM_DEV(0)

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 VSPI
	VSPI is used as SPI_DEV(0)

#define	SPI0_SCK GPIO18
	VSPI SCK.

#define	SPI0_MISO GPIO19
	VSPI MISO.

#define	SPI0_MOSI GPIO23
	VSPI MOSI.

#define	SPI0_CS0 GPIO5
	VSPI CS0.

UART configuration
ESP32 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 GPIO1
	direct I/O pin for UART_DEV(0) TxD, can't be changed

#define	UART0_RXD GPIO3
	direct I/O pin for UART_DEV(0) RxD, can't be changed

Macro Definition Documentation

◆ ADC_GPIOS

#define ADC_GPIOS { GPIO36, GPIO39, GPIO34, GPIO35, GPIO32, GPIO33 }

Declaration of GPIOs that can be used as ADC channels.

GPIO35 is used to measure V_BAT and is therefore not broken out.

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 68 of file periph_conf.h.

◆ DAC_GPIOS

#define DAC_GPIOS { GPIO25, GPIO26 }

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 82 of file periph_conf.h.

◆ I2C0_SCL

#define I2C0_SCL GPIO22

SCL signal of I2C_DEV(0) [UEXT1].

Definition at line 101 of file periph_conf.h.

◆ I2C0_SDA

#define I2C0_SDA GPIO21

SDA signal of I2C_DEV(0) [UEXT1].

Definition at line 104 of file periph_conf.h.

◆ I2C0_SPEED

#define I2C0_SPEED I2C_SPEED_FAST

I2C bus speed of I2C_DEV(0)

Definition at line 98 of file periph_conf.h.

◆ PWM0_GPIOS

#define PWM0_GPIOS { GPIO0, GPIO2 }

PWM channels for device PWM_DEV(0)

Definition at line 119 of file periph_conf.h.

◆ SPI0_CS0

#define SPI0_CS0 GPIO5

VSPI CS0.

Definition at line 148 of file periph_conf.h.

◆ SPI0_CTRL

#define SPI0_CTRL VSPI

VSPI is used as SPI_DEV(0)

Definition at line 136 of file periph_conf.h.

◆ SPI0_MISO

#define SPI0_MISO GPIO19

VSPI MISO.

Definition at line 142 of file periph_conf.h.

◆ SPI0_MOSI

#define SPI0_MOSI GPIO23

VSPI MOSI.

Definition at line 145 of file periph_conf.h.

◆ SPI0_SCK

#define SPI0_SCK GPIO18

VSPI SCK.

Definition at line 139 of file periph_conf.h.

◆ UART0_RXD

#define UART0_RXD GPIO3

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

Definition at line 173 of file periph_conf.h.

◆ UART0_TXD

#define UART0_TXD GPIO1

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

Definition at line 172 of file periph_conf.h.