DistanceSensorHelper

distance_sensor_helper.h

// https://registry.platformio.org/platforms/platformio/espressif8266/boards
// /homeassistant/esphome/distance_sensor_helper.h
#include "esphome.h"

// https://esphome.io/components/sensor/custom
class DistanceSensorHelper : public PollingComponent, public Sensor {
  public:
    int _trigPin;
    int _echoPin;
    DistanceSensorHelper(int polling_time)  : PollingComponent(polling_time)  {
      ESP_LOGD("custom", "WOOOOOO");
      _trigPin = 4;
      _echoPin = 5;
    }
    unsigned long get_duration() {
      digitalWrite(_trigPin, LOW);
      delayMicroseconds(2);
      digitalWrite(_trigPin, HIGH);
      delayMicroseconds(20);
      return pulseIn(_echoPin, HIGH);
    }

    int get_distance() {
      unsigned long avg = get_duration();
      char i = 0;
      unsigned long duration;
      do {
        duration = get_duration();
        ESP_LOGD("custom", "duration: %lu", duration);
        avg = (avg + duration) / 2;
        delay(100);
        i++;
      } while (i < 3);
      int distance = avg * 0.038 / 2; // Speed of sound wave divided by 2 (go and back)
      return distance;
    }
    void setup() override {
      ESP_LOGD("custom", "trigpin: %i", _trigPin);
      ESP_LOGD("custom", "echoPin: %i", _echoPin);
      pinMode(_trigPin, OUTPUT); // Sets the trigPin as an OUTPUT
      pinMode(_echoPin, INPUT); // Sets the echoPin as an INPUT
    }

    void update() override {

      // This will be called very often after setup time.
      // think of it as the loop() call in Arduino
      int d = get_distance();
      publish_state(d);
      ESP_LOGD("custom", "Distancia: %i", d);
    }
};

sensor:
  - platform: uptime
    name: "Tiempo en línea"

  - platform: adc
    pin: A0
    name: "Voltaje del Sensor"
    id: voltaje_sensor
    update_interval: 10s
    accuracy_decimals: 0
    internal: True
    filters:
      - multiply : 1000


  - platform : custom
    lambda: |-
      auto polling_time = 15000;
      auto dsh = new DistanceSensorHelper(polling_time);
      App.register_component(dsh);
      return {dsh};
    
    sensors:
      - name : "Distancia de agua"
        id: porcentaje_agua
        unit_of_measurement : "cm"