pulse_counter to allow pin via gpio expanders pcf8574, mcp230xx, mcp23sxx

[mstuczko]

Component name

pulse_counter

Link to component documentation on our website

https://esphome.io/components/sensor/pulse_counter/

Describe the enhancement

Hey Team.
Recently GPIO expanders received interrupt handling, thanks to indicating a gpio that is connected to interrupt pin of the expander.
It would be best, if expanders could be used for pulse counter.
Per documentation, interrupt helps by reading and caching the state.
I suspect that adding "expanders with supported interrupts" should be fairly possible.

Use cases

Examples - flow meters could be connected via expanders.

mcp23008:
  - id: id_expander1
    address: 0x20
    interrupt_pin: GPIO14

pcf8574:
  - id: id_expander2
    interrupt_pin: GPIO013

sensor:
  - platform: pulse_counter
    pin:
      #### ERROR: [mcp23008] is an invalid option for [pin]. Please check the indentation.
      mcp23008: id_expander1
      number: 0
      mode:
        input: true
        pullup: true

  - platform: pulse_counter
    pin:
      #### ERROR: [pcf8574] is an invalid option for [pin]. Please check the indentation.
      pcf8574: id_expander2
      number: 0
      mode:
        input: true
        pullup: true

Anything else?

See: interrupt_pin

https://esphome.io/components/pcf8574/
https://esphome.io/components/mcp230xx/
https://esphome.io/components/mcp23sxx/

esphome/esphome#11959
esphome/esphome#15445

[github-actions[bot]]

🏷️ I've automatically added the component: pulse_counter label to help categorize this feature request.