Peripheral MCU configuration for Espressif ESP-WROVER-KIT V3. More...

Detailed Description

Peripheral MCU configuration for Espressif ESP-WROVER-KIT V3.

The Espressif ESP-WROVER-KIT is a development board that uses the ESP32-WROVER module which includes a built-in 4 MByte SPI RAM. Most important features of the board are

Micro-SD card interface
OV7670 camera interface
3.2" SPI LCD panel
RGB LED

Furthermore, many GPIOs are broken out for extension. The USB bridge based on FDI FT2232HL provides a JTAG interface for debugging through the USB interface.

When the camera module is connected, add

USEMODULE += esp32_wrover_kit_camera

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
#define	ADC_GPIOS { GPIO34, GPIO35, GPIO36, GPIO39 }
	Declaration of GPIOs that can be used as ADC channels.

#define	DAC_GPIOS { }
	Declaration of GPIOs that can be used as DAC channels.

I2C configuration
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 GPIO27
	SCL signal of I2C_DEV(0) [UEXT1].

#define	I2C0_SDA GPIO26
	SDA signal of I2C_DEV(0) [UEXT1].

PWM channel configuration
LEDs are used as PWM channels for device PWM_DEV(0). 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, GPIO4 }
	only available when camera is not connected

SD/MMC host controller configuration
Warning If the camera is plugged in, the SD Card has to be used in 1-bit mode.
#define	SDMMC_CONFIG_NUMOF 1
	Number of configured SDMMC devices.

static const sdmmc_conf_t	sdmmc_config []
	SDMMC devices.

SPI configuration
SPI configuration depends on configured/connected components. HSPI is always available and therefore used as SPI_DEV(0) VSPI is only available when the camera is not plugged. Warning In order not to change the index of the SPI devices depending on the different hardware configuration options including the camera, SPI_DEV(0) is also defined in case of using the SD/MMC host controller, by default but cannot be used once an SD card is inserted. Use SPI_DEV(1) instead in this case.
#define	SPI0_CTRL HSPI
	HSPI is configured as SPI_DEV(0)

#define	SPI0_SCK GPIO14
	SD Card SCL.

#define	SPI0_MOSI GPIO15
	SD Card MOSI.

#define	SPI0_MISO GPIO2
	SD Card MISO.

#define	SPI0_CS0 GPIO13
	SD Card CS.

#define	SPI1_CTRL VSPI
	When the camera is not connected, VSPI is configured and becomes SPI_DEV(1).

#define	SPI1_SCK GPIO19
	VSPI SCK used as LCD SCL, can be used to connect peripherals.

#define	SPI1_MOSI GPIO23
	VSPI MOSI used as LCD MOSI, can be used to connect peripherals.

#define	SPI1_MISO GPIO25
	VSPI MISO used as LCD MISO, can be used to connect peripherals.

#define	SPI1_CS0 GPIO22
	VSPI CS0 used as LCD CS, can be used to connect peripherals.

UART configuration
ESP32 provides 3 UART interfaces at maximum: UART_DEV(0) uses fixed standard configuration. UART_DEV(1) is not available. UART_DEV(2) is not available.
#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 { GPIO34, GPIO35, GPIO36, GPIO39 }

Declaration of GPIOs that can be used as ADC channels.

When the camera is connected there are no GPIOs left that could 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 72 of file periph_conf.h.

◆ DAC_GPIOS

#define DAC_GPIOS { }

Declaration of GPIOs that can be used as DAC channels.

ESP-WROVER-KIT has no GPIOs left that might be used as DAC channels.

Definition at line 84 of file periph_conf.h.

◆ I2C0_SCL

#define I2C0_SCL GPIO27

SCL signal of I2C_DEV(0) [UEXT1].

Definition at line 101 of file periph_conf.h.

◆ I2C0_SDA

#define I2C0_SDA GPIO26

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, GPIO4 }

only available when camera is not connected

Definition at line 121 of file periph_conf.h.

◆ SDMMC_CONFIG_NUMOF

#define SDMMC_CONFIG_NUMOF 1

Number of configured SDMMC devices.

Definition at line 155 of file periph_conf.h.

◆ SPI0_CS0

#define SPI0_CS0 GPIO13

SD Card CS.

Definition at line 189 of file periph_conf.h.

◆ SPI0_CTRL

#define SPI0_CTRL HSPI

HSPI is configured as SPI_DEV(0)

Definition at line 176 of file periph_conf.h.

◆ SPI0_MISO

#define SPI0_MISO GPIO2

SD Card MISO.

Definition at line 186 of file periph_conf.h.

◆ SPI0_MOSI

#define SPI0_MOSI GPIO15

SD Card MOSI.

Definition at line 183 of file periph_conf.h.

◆ SPI0_SCK

#define SPI0_SCK GPIO14

SD Card SCL.

Definition at line 180 of file periph_conf.h.

◆ SPI1_CS0

#define SPI1_CS0 GPIO22

VSPI CS0 used as LCD CS, can be used to connect peripherals.

Definition at line 217 of file periph_conf.h.

◆ SPI1_CTRL

#define SPI1_CTRL VSPI

When the camera is not connected, VSPI is configured and becomes SPI_DEV(1).

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 204 of file periph_conf.h.

◆ SPI1_MISO

#define SPI1_MISO GPIO25

VSPI MISO used as LCD MISO, can be used to connect peripherals.

Definition at line 214 of file periph_conf.h.

◆ SPI1_MOSI

#define SPI1_MOSI GPIO23

VSPI MOSI used as LCD MOSI, can be used to connect peripherals.

Definition at line 211 of file periph_conf.h.

◆ SPI1_SCK

#define SPI1_SCK GPIO19

VSPI SCK used as LCD SCL, can be used to connect peripherals.

Definition at line 208 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 233 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 232 of file periph_conf.h.

Variable Documentation

◆ sdmmc_config

const sdmmc_conf_t sdmmc_config[]

static

Initial value:

= {
    {
        .slot = SDMMC_SLOT_1,
        .cd = GPIO21,
        .wp = GPIO_UNDEF,
 
 
 
 
        .bus_width = 4,
 
    },
}

SDMMC devices.

Definition at line 140 of file periph_conf.h.