Peripheral MCU configuration for Olimex ESP32-EVB (ESP32-GATEWAY) More...

Detailed Description

Peripheral MCU configuration for Olimex ESP32-EVB (ESP32-GATEWAY)

This configuration is for the Olimex ESP32-EVB, but can also be used for the Olimex ESP32-GATEWAY. To use this board definition with Olimex ESP32-GATEWAY, add

USEMODULE += olimex_esp32_gateway

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_cpu.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
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.
#define	ADC_GPIOS { }
	Declaration of GPIOs that can be used as ADC channels.

#define	DAC_GPIOS { }
	Olimex ESP32-EVB has no GPIOs left that might be used as DAC channels.

CAN configuration
Olimex ESP32-EVB has a CAN interface including a CAN transceiver on board.
#define	CAN_TX GPIO5
	CAN TX transceiver signal.

#define	CAN_RX GPIO35
	CAN RX transceiver signal.

I2C configuration
Olimex ESP32-EVB/GATEWAY have one I2C interface `I2C_DEV(0)`. However, they use different GPIOs. Olimex ESP32-EVB, the interface is also available at the [UEXT] connector. 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 GPIO16
	SCL signal of I2C_DEV(0)

#define	I2C0_SDA GPIO13
	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 { GPIO9, GPIO10 }
	In DOUT and DIO flash mode, GPIO9 and GIO10 are available and can be used as PWM channels with `PWM_DEV(0)`.

SD/MMC host controller configuration
#define	SDMMC_CONFIG_NUMOF 1
	Number of configured SDMMC devices.

static const sdmmc_conf_t	sdmmc_config []
	SDMMC devices.

SPI configuration
#define	SPI0_CTRL HSPI
	HSPI is used as SPI_DEV(0)

#define	SPI0_SCK GPIO14
	SCK [UEXT] / SD card interface].

#define	SPI0_MISO GPIO2
	MISO [UEXT] / SD card interface].

#define	SPI0_MOSI GPIO15
	MOSI [UEXT] / SD Card interface].

#define	SPI0_CS0 GPIO17
	CS0 [UEXT].

UART configuration
ESP32 provides 3 UART interfaces at maximum: UART_DEV(0) uses fixed standard configuration. UART_DEV(1) is defined here. UART_DEV(2) is not used. If the board definition is used for Olimex EVB-GATEWAY, the UART_DEV(1) interface is not available.
#define	UART0_TXD GPIO1
	direct I/O pin for UART_DEV(0), can't be changed

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

#define	UART1_TXD GPIO4
	UART_DEV(1) TxD.

#define	UART1_RXD GPIO36
	UART_DEV(1) RxD.

Macro Definition Documentation

◆ ADC_GPIOS

#define ADC_GPIOS { }

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 65 of file periph_conf.h.

◆ CAN_RX

#define CAN_RX GPIO35

CAN RX transceiver signal.

Definition at line 82 of file periph_conf.h.

◆ CAN_TX

#define CAN_TX GPIO5

CAN TX transceiver signal.

Definition at line 81 of file periph_conf.h.

◆ DAC_GPIOS

#define DAC_GPIOS { }

Olimex ESP32-EVB has no GPIOs left that might be used as DAC channels.

Definition at line 71 of file periph_conf.h.

◆ I2C0_SCL

#define I2C0_SCL GPIO16

SCL signal of I2C_DEV(0)

Definition at line 111 of file periph_conf.h.

◆ I2C0_SDA

#define I2C0_SDA GPIO13

SDA signal of I2C_DEV(0)

Definition at line 114 of file periph_conf.h.

◆ I2C0_SPEED

#define I2C0_SPEED I2C_SPEED_FAST

I2C bus speed of I2C_DEV(0)

Definition at line 99 of file periph_conf.h.

◆ PWM0_GPIOS

#define PWM0_GPIOS { GPIO9, GPIO10 }

In DOUT and DIO flash mode, GPIO9 and GIO10 are available and can be used as PWM channels with PWM_DEV(0).

Definition at line 135 of file periph_conf.h.

◆ SDMMC_CONFIG_NUMOF

#define SDMMC_CONFIG_NUMOF 1

Number of configured SDMMC devices.

Definition at line 164 of file periph_conf.h.

◆ SPI0_CS0

#define SPI0_CS0 GPIO17

CS0 [UEXT].

Definition at line 199 of file periph_conf.h.

◆ SPI0_CTRL

#define SPI0_CTRL HSPI

HSPI is used as SPI_DEV(0)

It is available at the [UEXT] connector on Olimex ESP32-EVB. If the SD Card/MMC interface is used, the SPI interface is not available.

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.

Definition at line 186 of file periph_conf.h.

◆ SPI0_MISO

#define SPI0_MISO GPIO2

MISO [UEXT] / SD card interface].

Definition at line 193 of file periph_conf.h.

◆ SPI0_MOSI

#define SPI0_MOSI GPIO15

MOSI [UEXT] / SD Card interface].

Definition at line 196 of file periph_conf.h.

◆ SPI0_SCK

#define SPI0_SCK GPIO14

SCK [UEXT] / SD card interface].

Definition at line 190 of file periph_conf.h.

◆ UART0_RXD

#define UART0_RXD GPIO3

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

Definition at line 221 of file periph_conf.h.

◆ UART0_TXD

#define UART0_TXD GPIO1

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

Definition at line 220 of file periph_conf.h.

◆ UART1_RXD

#define UART1_RXD GPIO36

UART_DEV(1) RxD.

Definition at line 229 of file periph_conf.h.

◆ UART1_TXD

#define UART1_TXD GPIO4

UART_DEV(1) TxD.

Definition at line 226 of file periph_conf.h.

Variable Documentation

◆ sdmmc_config

const sdmmc_conf_t sdmmc_config[]

static

Initial value:

= {
    {
        .slot = SDMMC_SLOT_1,
        .cd = GPIO_UNDEF,
        .wp = GPIO_UNDEF,
 
 
 
        .bus_width = 1,
 
    },
}

SDMMC devices.

Definition at line 150 of file periph_conf.h.