Antenna Switch (C6 variant)

[rueckwaertsflieger]

Describe the component you'd like

The Seed Studio ESP32-C6 module features an antenna switch. One may use this switch for enabling either the on-board or an external antenna. Not specifiying the switch state may leave the RF signal in poor condition due to randomly wrong signal path, e.g., external without attached antenna.
Should become a NEW component, since the antenna performance is essential, not solely for WIFI but BLE and ZigBee and thread as well, since all of them uses the same antenna. Components YAML should look somehow like:

#antenna switch configuration
esphome:
  on_boot:
      priority: 800
      then:
        - wifi.disable: # in order to not kill the RF transmitter without load whilst switching
        - output.turn_off: pin3 # activate RF Switch control, low= active
        - delay: 100ms
        - switch.turn_off: pin14 # switch antenna connctor, low= external connector, high= on board antenna
        - wifi.enable:

output: # define antenna switch enable pin
    platform: gpio # define antenna switch enable
    id: pin3
    pin: GPIO03

switch: # define antenna switch pin
    platform: gpio
    pin: GPIO14
    restore_mode: ALWAYS_OFF 
    name: "External Wifi Antenna On/Off"
    id: pin14
#end antenna switch configuration

What are your use cases for this component?

Every use of an ESP32 using RF using an antenna switch, at least any usage of an ESP32-C6, possibly other variants.
Routing the RF signal to the wrong signal path may cause 30 dB signal loss or even damage of the device.

Is there a public datasheet, documentation and/or schematics?

https://wiki.seeedstudio.com/xiao_esp32c6_getting_started/#hardware-overview

Anything else?

https://community.home-assistant.io/t/enable-external-wifi-antenna-on-xiao-esp32c6/910303
See post from michapixel on 29th of July 2024