Ethernet Component
==================

.. seo::
    :description: Instructions for setting up the Ethernet configuration for your ESP32 node in ESPHome.
    :image: ethernet.png
    :keywords: Ethernet, ESP32

This core ESPHome component sets up ethernet connections for ESP32s.
Ethernet for ESP8266 is not supported.

.. code-block:: yaml

    # Example configuration entry
    ethernet:
      type: LAN8720
      mdc_pin: GPIO23
      mdio_pin: GPIO18
      clk_mode: GPIO0_IN
      phy_addr: 0

      # Optional manual IP
      manual_ip:
        static_ip: 10.0.0.42
        gateway: 10.0.0.1
        subnet: 255.255.255.0

Configuration variables:
------------------------

- **type** (**Required**, string): The type of LAN chipset. Must be one of
  ``LAN8720`` or ``TLK110`` (see datasheet for more details).
- **mdc_pin** (**Required**, :ref:`config-pin`): The MDC pin of the board.
  Usually this is ``GPIO23``.
- **mdio_pin** (**Required**, :ref:`config-pin`): The MDIO pin of the board.
  Usually this is ``GPIO18``.
- **clk_mode** (*Optional*, string): The clock mode of the data lines, this must be one
  of these values: (see datasheet of your board for more details)

  - ``GPIO0_IN`` (Default) - External clock
  - ``GPIO0_OUT`` - Internal clock
  - ``GPIO16_OUT`` - Internal clock
  - ``GPIO17_OUT`` - Internal clock

- **phy_addr** (*Optional*, int): The PHY addr type of the ethernet controller. Defaults to 0.
- **power_pin** (*Optional*, :ref:`Pin Schema <config-pin_schema>`): The pin with which
  to control the power of the board. Leave unspecified for no power pin (default)

- **manual_ip** (*Optional*): Manually configure the static IP of the node.

  - **static_ip** (*Required*, IPv4 address): The static IP of your node.
  - **gateway** (*Required*, IPv4 address): The gateway of the local network.
  - **subnet** (*Required*, IPv4 address): The subnet of the local network.
  - **dns1** (*Optional*, IPv4 address): The main DNS server to use.
  - **dns2** (*Optional*, IPv4 address): The backup DNS server to use.

- **domain** (*Optional*, string): Set the domain of the node hostname used for uploading.
  For example, if it's set to ``.local``, all uploads will be sent to ``<HOSTNAME>.local``.
  Defaults to ``.local``.
- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.


.. note::

    If your ethernet board is not designed with an ESP32 built in, chances are that you are going
    to use flying leads, dupont wires, etc. to connect the ethernet to the ESP32. This is 
    probably to fail as the ethernet interface uses a high frequency clock signal. For more 
    information and wiring details refer to the the link in the *See also* section.
    
Configuration for wESP32 board
------------------------------

.. code-block:: yaml

    ethernet:
      type: LAN8720
      mdc_pin: GPIO16
      mdio_pin: GPIO17
      clk_mode: GPIO0_IN
      phy_addr: 0

Configuration for Olimex ESP32-POE
----------------------------------

.. code-block:: yaml

    ethernet:
      type: LAN8720
      mdc_pin: GPIO23
      mdio_pin: GPIO18
      clk_mode: GPIO17_OUT
      phy_addr: 0
      power_pin: GPIO12
      
Configuration for OpenHacks LAN8720
-----------------------------------

.. code-block:: yaml

    ethernet:
      type: LAN8720
      mdc_pin: GPIO23
      mdio_pin: GPIO18
      phy_addr: 1
      
Note: This board has an issue that might cause the ESP32 to boot in program mode. When testing, make sure you are monitoring the
serial output and reboot the device several times to see if it boots into the program properly.


See Also
--------

- :apiref:`ethernet/ethernet_component.h`
- `ESP32 Ethernet PHY connection info <https://pcbartists.com/design/embedded/esp32-ethernet-phy-schematic-design/>`__
- :ghedit:`Edit`