ESPNow Proxy

Basic ESPNow proxy component for ESPHome supporting Unicast and Broadcast.

ESPNow is a protocol that allows for direct communication between ESP32 (and ESP8266) devices without needing a WiFi router or access point. It uses the same radio chip as WiFi to establish a direct peer-to-peer connection.

This custom component for esphome supports only the sending and receiving of commands using esphome / ESP32.

There is no support for sensor data just the basic send/recv functionality using a simple data protocol with command ack.

The code is inspired by Beethowen and EasyNow: Beethowen Transmitter, Beethowen Receiver EasyNow

Remarks

When SoftAP is being used, the mac address will be different. This will cause issues, when only using the base mac address.

More info:

• https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/misc_system_api.html
• https://forum.arduino.cc/t/question-about-mac-address-and-esp-now/1017002/5
• https://lastminuteengineers.com/esp32-mac-address-tutorial/

Unicast configuration

The unicast confiuration is being used, to only send to a specific device. This can be done by setting the mac address in receiver.

espnow_proxy:
  id: espnow_send
  channel: 1
  receiver: AA:BB:CC:DD:EE:FF
  peers:
    - mac_address: AA:BB:CC:DD:EE:FF
      name_prefix: Peer1

Multicast configuration

When the receiver is left out, broadcast address (FF:FF:FF:FF:FF:FF) will be used.

espnow_proxy:
  id: espnow_send
  channel: 1
  peers:
    - mac_address: AA:BB:CC:DD:EE:FF
      name_prefix: Peer1
    - mac_address: AA:BB:CC:DD:EE:FF
      name_prefix: Peer2

Component and Peer Events

espnow_proxy:
  id: espnow_send
  channel: 1

  on_packet_data:  # All packets
    - ...
  on_command_data:  # command data
    - ...
  on_send_started:  # sending starts
    - ...
  on_send_finished:  # sending finished
    - ...
  on_send_failed:  # sending failed
    - ...
  peers:
    - mac_address: AA:BB:CC:DD:EE:FF

      on_packet_data:  # Only packets directed to this peer
        - ...
      on_command_data:
        - ...
      on_send_started:
        - ...
      on_send_finished:
        - ...
      on_send_failed: