// DHT Temperature & Humidity Sensor
// Unified Sensor Library Example
// Written by Tony DiCola for Adafruit Industries
// Released under an MIT license.
 
// Depends on the following Arduino libraries:
// - Adafruit Unified Sensor Library: https://github.com/adafruit/Adafruit_Sensor
// - DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library
 
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#define DHTPIN 8 // Pin which is connected to the DHT sensor.
#include <LiquidCrystal.h>
 
//#define DHTTYPE DHT11 // DHT 11 
#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
 
// See guide for details on sensor wiring and usage:
// https://learn.adafruit.com/dht/overview
 
DHT_Unified dht(DHTPIN, DHTTYPE);
uint32_t delayMS;
LiquidCrystal lcd(2, 3, 4, 5, 6, 7); // on a remplace la ligne de depart qui etait LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
 
 
void setup() 
{
 Serial.begin(9600); 
lcd.begin(16,2);
 dht.begin();// Initialize device.
 Serial.println("DHTxx Unified Sensor Example");
 // Print temperature sensor details.
 sensor_t sensor;
 dht.temperature().getSensor(&sensor);
 Serial.println("------------------------------------");
 Serial.println("Temperature");
 Serial.print ("Sensor: "); Serial.println(sensor.name);
 Serial.print ("Driver Ver: "); Serial.println(sensor.version);
 Serial.print ("Unique ID: "); Serial.println(sensor.sensor_id);
 Serial.print ("Max Value: "); Serial.print(sensor.max_value); Serial.println(" *C");
 Serial.print ("Min Value: "); Serial.print(sensor.min_value); Serial.println(" *C");
 Serial.print ("Resolution: "); Serial.print(sensor.resolution); Serial.println(" *C"); 
 Serial.println("------------------------------------");
 // Print humidity sensor details.
 dht.humidity().getSensor(&sensor);
 Serial.println("------------------------------------");
 Serial.println("Humidity");
 Serial.print ("Sensor: "); Serial.println(sensor.name);
 Serial.print ("Driver Ver: "); Serial.println(sensor.version);
 Serial.print ("Unique ID: "); Serial.println(sensor.sensor_id);
 Serial.print ("Max Value: "); Serial.print(sensor.max_value); Serial.println("%");
 Serial.print ("Min Value: "); Serial.print(sensor.min_value); Serial.println("%");
 Serial.print ("Resolution: "); Serial.print(sensor.resolution); Serial.println("%"); 
 Serial.println("------------------------------------");
 // Set delay between sensor readings based on sensor details.
 delayMS = sensor.min_delay / 1000;
  
}
 
void loop() 
{
lcd.setCursor(1,1);
 // Delay between measurements.
 delay(delayMS);
 // Get temperature event and print its value.
 sensors_event_t event; 
 dht.temperature().getEvent(&event);
 if (isnan(event.temperature)) 
 {
 Serial.println("Error reading temperature!");
 }
 else
 {
 Serial.print("Temperature: ");
 Serial.print(event.temperature);
 Serial.println(" *C");
 lcd.setCursor(1,0);
 lcd.print(" Temp: ");
 lcd.print(event.temperature);
 lcd.print(" *C");
 }
 // Get humidity event and print its value.
 dht.humidity().getEvent(&event);
 if (isnan(event.relative_humidity)) 
 {
 Serial.println("Error reading humidity!");
 }
 else
 {
 Serial.print("Humi: ");
 Serial.print(event.relative_humidity);
 Serial.println("%");
lcd.setCursor(1,1);
lcd.print(" Humi: ");
lcd.print(event.relative_humidity);
lcd.print(" %");
 }
  
  
 
 
}