boards/esp32-wrover-kit/include/periph_conf.h

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 

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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 .

Note

Most definitions can be overridden by an .

ADC_GPIOS

Declaration of GPIOs that can be used as ADC channels. 

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{ GPIO34, GPIO35, GPIO36, GPIO39 }

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.

DAC_GPIOS

Declaration of GPIOs that can be used as DAC channels. 

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{ }

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

I2C0_SPEED

I2C bus speed of i2c.h::I2C_DEV 

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I2C_SPEED_FAST
I2C0_SCL

SCL signal of i2c.h::I2C_DEV [UEXT1]. 

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GPIO27
I2C0_SDA

SDA signal of i2c.h::I2C_DEV [UEXT1]. 

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GPIO26
PWM0_GPIOS

only available when camera is not connected 

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{ LED0_PIN, LED2_PIN }
PWM1_GPIOS

pwm.h::PWM_DEV is not used. 

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{ }
SPI0_DEV

HSPI is configured as spi.h::SPI_DEV 

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HSPI
SPI0_SCK

SD Card SCL. 

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GPIO14
SPI0_MOSI

SD Card MOSI. 

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GPIO15
SPI0_MISO

SD Card MISO. 

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GPIO2
SPI0_CS0

SD Card CS. 

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GPIO13
SPI1_DEV

When the camera is not connected, VSPI is configured and becomes spi.h::SPI_DEV. 

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VSPI

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.

SPI1_SCK

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

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GPIO19
SPI1_MOSI

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

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GPIO23
SPI1_MISO

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

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GPIO25
SPI1_CS0

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

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GPIO22
UART0_TXD

direct I/O pin for uart.h::UART_DEV TxD, can’t be changed 

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GPIO10
UART0_RXD

direct I/O pin for uart.h::UART_DEV RxD, can’t be changed 

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GPIO9