The Espressif [ESP32-Ethernet-Kit](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/hw-reference/esp32/get-started-ethernet-kit-v1.0.html) is a development board that uses the ESP32-WROVER-B module. Most important features of the board are
- 100 Mbps Ethernet via IP101G PHY
- USB bridge with JTAG interface
Furthermore, some GPIOs are broken out for extension. The USB bridge based on FDI FT2232HL provides a JTAG interface for OCD debugging through the USB interface.
ESP32-Ethernet-Kit v1.0 has the following on-board components
- 100 Mbps Ethernet via IP101G PHY
- USB bridge with JTAG interface
For detailed information about the configuration of ESP32 boards, see
section Peripherals in \ref esp32_riot.
@note
Only a few GPIOs are broken out and available for external hardware on ESP32-Ethernet-Kit boards. Which GPIOs are available as peripherals depends on used modules.
- GPIO4 only works properly on the board if the function switch for GPIO4 (DIP SW 5) is OFF.
- SPI_DEV(0) is not available if module `esp_jtag` is used. For the SPI_DEV(0) pins to work properly, the function switches (DIP switches) for the JTAG signals must be set to OFF.
The board schematic can be found [here](https://dl.espressif.com/dl/schematics/SCH_ESP32-ETHERNET-KIT_A_V1.0_20190517.pdf).
By default, only 3 bidirectional GPIO pins are unused: GPIO4, GPIO32, GPIO33. The suggested configuration is for PWM
and I2C, but they can also be used for SPI or another serial port. By disabling the JTAG interface on the board,
another 4 GPIOs can be made available (GPIO12, GPIO13, GPIO14, GPIO15).
## <a name="other-resources"> Other Documentation Resources </a> [[TOC](#toc)]
There is a comprehensive [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/hw-reference/esp32/get-started-ethernet-kit-v1.0.html) for the ESP32-Ethernet-Kit with a lot information about hardware configuration.
