Support for for Espressif ESP32-Ethernet-Kit v1.1.
Support for for Espressif ESP32-Ethernet-Kit v1.1.
Espressif ESP32-Ethernet-Kit V1.1
Table of Contents
- Overview
- Hardware
- Board Configuration
- Board Pinout
- Other Documentation Resources
Overview
The Espressif ESP32-Ethernet-Kit 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. For flashing and debugging the board, see ESP32-Ethernet-Kit common board documentation.
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Hardware
This section describes
- the default board configuration,
- the board pinout.
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Board Configuration
ESP32-Ethernet-Kit v1.1 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 RIOT-OS on ESP32 SoC Series Boards.
- 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.
| Function | GPIOs | Remarks | Configuration |
|---|---|---|---|
| BTN0 | GPIO0 | not available if esp_eth is used | |
| ADC | GPIO34, GPIO35, GPIO36, GPIO39 | ADC Channels | |
| DAC | - | DAC Channels | |
| PWM_DEV(0) | GPIO2, GPIO4 | PWM Channels | |
| I2C_DEV(0):SDA | GPIO32 | I2C Interfaces | |
| I2C_DEV(0):SCL | GPIO33 | I2C Interfaces | |
| SPI_DEV(0):CLK | GPIO14 | HSPI is used | SPI Interfaces |
| SPI_DEV(0):MISO | GPIO12 | HSPI is used | SPI Interfaces |
| SPI_DEV(0):MOSI | GPIO13 | HSPI is used | SPI Interfaces |
| SPI_DEV(0):CS0 | GPIO15 | HSPI is used | SPI Interfaces |
| UART_DEV(0):TxD | GPIO1 | Console (configuration is fixed) | UART interfaces |
| UART_DEV(0):RxD | GPIO3 | Console (configuration is fixed) | UART interfaces |
- Note
- SPI_DEV(0) is not available if module
esp_jtagis used. For the SPI_DEV(0) pins to work properly, the function switches (DIP switches) for the JTAG signals must be set to OFF.
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Board Pinout
The board schematic can be found here.
By default, only 4 bidirectional GPIO pins are unused: GPIO2, 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).
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Other Documentation Resources
There is a comprehensive Getting Started Guide for the ESP32-Ethernet-Kit with a lot information about hardware configuration.
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