#include <DHT.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
#define SCREEN_ADDRESS 0x3C 
#define SOL_HUMIDITE_PIN 35   
#define DHTPIN 2              
#define DHTTYPE DHT22   
#define L_PIN 34              

int l_Value;
float humidite_Sol;
float temperature;
float humidite_Air;
float lumiere;

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
 
  if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation echoue"));
    for (;;);
  }

  dht.begin();

  display.clearDisplay();
  display.setTextSize(1.7);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.print("Initializing...");
  display.display();
  
  
}

void loop() {
  display.setTextColor(SSD1306_WHITE);
  display.clearDisplay();
  // Measure soil humidity
  humidite_Sol = analogRead(SOL_HUMIDITE_PIN); 
  humidite_Sol = map(humidite_Sol, 5, 4095, 0, 100); 
  
  if (humidite_Sol == 0) {
    Serial.println("Humidite Sol: echec");
    display.setCursor(0, 0);
    display.println("Humidite Sol: echec");
  } else {
    Serial.print("Humidite Sol: ");
    Serial.print(humidite_Sol);
    Serial.println("%");
    display.setCursor(0, 0);
    display.print("Humidie Sol: ");
    display.print(humidite_Sol);
    display.println("%");
  }
  
  // Measure temperature and humidity
  temperature = dht.readTemperature();
  humidite_Air = dht.readHumidity();
  
  if (!isnan(temperature) && !isnan(humidite_Air)) {
    display.setCursor(0, 16);
    display.print("Temperature: ");
    display.print(temperature);
    display.println(" C");

    display.setCursor(0, 32);
    display.print("Humidite Air: ");
    display.print(humidite_Air);
    display.println("%");
    
    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.println(" C");
    Serial.print("Humidite Air: ");
    Serial.print(humidite_Air);
    Serial.println("%");
  } else {
    Serial.println("DHT non connecte");
    display.setCursor(0, 16);
    display.println("DHT non connecte");
    display.setCursor(0, 32);
    display.println("DHT non connecte");
  }
  
  // Measure light intensity
  l_Value = analogRead(L_PIN); 
  lumiere = map(l_Value, 4095, 32, 0, 100); 

  if (lumiere == 0) { 
    Serial.println("Lumiere: echec");
    display.setCursor(0, 50);
    display.println("Lumiere: echec");
  } else {
    Serial.print("Lumiere: ");
    Serial.print(lumiere);
    Serial.println("%");

    display.setCursor(0, 50);
    display.print("Lumiere: ");
    display.print(lumiere);
    display.println("%");
  }
  
  display.display();
  
}