POTAUTO

// PotAuto — Firmware ESP32-S3 (extrait)
// Calibration humidité par espèce + cycle deep-sleep

#include <DHT.h>
#define DHTPIN 4
#define DHTTYPE DHT22
#define PUMP_PIN 5
#define BUTTON_PIN 0
#define LED_PIN 2

DHT dht(DHTPIN, DHTTYPE);
float HUMIDITY_THRESHOLD = 40.0;  // % défaut, réglable
const int PUMP_DURATION_MS = 1500; // ~27mL
const int SLEEP_MINUTES = 240;     // 4 heures

void setup() {
  dht.begin();
  pinMode(PUMP_PIN, OUTPUT);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  digitalWrite(PUMP_PIN, LOW);
}

void loop() {
  // Lecture humidité sol
  float humidity = dht.readHumidity();

  if (isnan(humidity)) {
    blinkLED(3, 200);  // erreur capteur
    goToSleep();
  }

  // Décision d'arrosage
  if (humidity < HUMIDITY_THRESHOLD) {
    digitalWrite(LED_PIN, HIGH);
    digitalWrite(PUMP_PIN, HIGH);
    delay(PUMP_DURATION_MS);
    digitalWrite(PUMP_PIN, LOW);
    digitalWrite(LED_PIN, LOW);
    logReading(humidity, true);
  } else {
    logReading(humidity, false);
  }

  goToSleep();
}

void goToSleep() {
  esp_sleep_enable_timer_wakeup(
    SLEEP_MINUTES * 60 * 1000000ULL
  );
  esp_deep_sleep_start();
}