Configure KC868-A8 in ESPHome

[land88]

Hi,

I would like to configure an input for count my water with pulse_counter with a KC868-a8, I Have a contact dry between GND and Input 0, with a Binary_sensor, it's ok , but I can't count it with ESPHOME in Home Assistant with a sensor.

I Think I don't have the correct PIN, I Try all from 0 to 39, But Nothing...
Do you have an idea ?

Thanks

This is my configuration in HA :

esphome:
name: kc868-a8
platform: ESP32
board: esp32dev


# Example configuration entry for ESP32
i2c:
sda: 4
scl: 5
scan: true
id: bus_a


# Example configuration entry
ethernet:
type: LAN8720
mdc_pin: GPIO23
mdio_pin: GPIO18
clk_mode: GPIO17_OUT
phy_addr: 0

# Optional manual IP
manual_ip:
static_ip: 192.168.0.199
gateway: 192.168.0.1
subnet: 255.255.255.0


# Example configuration entry
pcf8574:
- id: 'pcf8574_hub_output'
address: 0x24

- id: 'pcf8574_hub_input'
address: 0x22

sensor:
- platform: pulse_counter
pin:
number: 21
inverted: true
mode:
input: true
pullup: true
name: "Pulse Counter"