drop/config.hpp

#pragma once
#include <Arduino.h>

typedef struct {
  uint8_t pin;
  /// The value sensors read when completely dry
  int calibration_dry;
  /// The value sensors read when completely wet
  int calibration_wet;
} Sensor;

typedef struct {
  uint8_t valve_pin;
  uint8_t led_pin;
  Sensor sensor;
  // define additional per-pot config here
} PotConfig;

constexpr unsigned int SECOND = 1000;
constexpr unsigned int MINUTE = SECOND * 60;
constexpr unsigned int HOUR = MINUTE * 60;

constexpr unsigned int MEASUREMENT_COUNT = 3;
constexpr int MEASUREMENT_DELAY = 100;

/// Pots will always be watered below this humidity
constexpr int MIN_HUMIDITY_PERCENT = 30;

/// Pots will never be watered above this humidity
constexpr int MAX_HUMIDITY_PERCENT = 70;

/// the amount of time a valve needs to open/close
constexpr int VALVE_DELAY_MS = 1 * SECOND / 4;

/// the amount of time the pump needs to start/stop
constexpr int PUMP_DELAY_MS = 1 * SECOND / 4;

/// the amount of time to water the plot (valve open and pump running)
constexpr int WATER_TIME_MS = 1 * SECOND / 4;

/// how long to wait between loops
constexpr int LOOP_DELAY_MS = 1 * SECOND;

/// minimum amount of time to wait between watering each pot, even when minimum wetness has been reached
constexpr int MIN_WATERING_INTERVAL_MS = 10 * SECOND; // TODO set higher once it is working

/// maximum amount of time to wait between watering each pot, as long as maximum wetness has not been reaached
constexpr int MAX_WATERING_INTERVAL_MS = 24 * HOUR;

constexpr uint8_t PUMP_PIN = 7;
constexpr uint8_t PUMP_LED_PIN = 3;

constexpr uint8_t OK_LED_PIN = 2;

/// Per-pot configuration
constexpr PotConfig POT_CONFIGS[] = {
  {
    .valve_pin = 23,
    .led_pin = 22,
    .sensor = {
      .pin = A0,
      .calibration_dry = 540,
      .calibration_wet = 250,
    }
  },
  {
    .valve_pin = 25,
    .led_pin = 24,
    .sensor = {
      .pin = A1,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 27,
    .led_pin = 26,
    .sensor = {
      .pin = A2,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 29,
    .led_pin = 28,
    .sensor = {
      .pin = A3,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 31,
    .led_pin = 30,
    .sensor = {
      .pin = A4,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 33,
    .led_pin = 32,
    .sensor = {
      .pin = A5,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 35,
    .led_pin = 34,
    .sensor = {
      .pin = A6,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 37,
    .led_pin = 36,
    .sensor = {
      .pin = A7,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 39,
    .led_pin = 38,
    .sensor = {
      .pin = A8,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 41,
    .led_pin = 40,
    .sensor = {
      .pin = A9,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 43,
    .led_pin = 42,
    .sensor = {
      .pin = A10,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 45,
    .led_pin = 44,
    .sensor = {
      .pin = A11,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 47,
    .led_pin = 46,
    .sensor = {
      .pin = A12,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 49,
    .led_pin = 48,
    .sensor = {
      .pin = A13,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 51,
    .led_pin = 50,
    .sensor = {
      .pin = A14,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
  {
    .valve_pin = 53,
    .led_pin = 52,
    .sensor = {
      .pin = A15,
      .calibration_dry = 520,
      .calibration_wet = 100,
    }
  },
};

constexpr unsigned int POT_COUNT = sizeof(POT_CONFIGS) / sizeof(POT_CONFIGS[0]);