====== Wemos et capteurs , humidité DHT12, MQ-135, microparticule SDS011 vers OSC ======
<code>
// ESP_Wemos MQ-135 gaz detecteur vers OSC
// + mesure d'humidité DHT12
//
// https://github.com/CNMAT/OSC
// https://github.com/wemos/WEMOS_DHT12_Arduino_Library/tree/master/examples
// https://github.com/lewapek/sds-dust-sensors-arduino-library
//
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include "SdsDustSensor.h"
#include <OSCMessage.h> // lib OSC de la biblio standard adrianfreed 
#include <WEMOS_DHT12.h>

//#define DEBUG
const int GAZ1_A0 = A0;
WiFiUDP Udp;
///// FIXEZ CES VALEURS ///////////
const unsigned int outPort = 9001;    //port numbers for OSC
IPAddress outIP(192, 168, 0, 17);     // IP pc destination
const char* ssid           = "SNHACK";
const char* password       = "1234567890";
char* nomhost              = "GAZ1";  // le nom viendra de l'ip?
char* OSCVar               = "/GAZ1"; // nom du capteur et valeur OSC
int temps_milli             = 1000;   // temps milli entre 2 mesures
///////////////////////////////////
float humidite = 0;
float temperatre = 0;
float pm_25 = 0;
float pm_10 = 0;
int rxPin = D6; // D1 D2 utilisé par DHT12 i2c
int txPin = D7;
SdsDustSensor sds(rxPin, txPin);
DHT12 dht12;

void setup() {
  pinMode(GAZ1_A0, INPUT);
  Serial.begin(115200);
  Serial.println(ESP.getChipId(), HEX);
  //setup ethernet part
  Serial.println();
  Serial.print("Gaz sur A0 et DHT12 shield vers OSC /GAZ1 ");

  Serial.print("Connexion SSID ");
  Serial.println(ssid);
  WiFi.mode(WIFI_STA);
  //WiFi.hostname(nomhost);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println(ssid);
  Serial.println("IP addresse: ");
  IPAddress IPLOCAL = WiFi.localIP();
  Serial.println("hostname: ");
  Serial.println(nomhost);
  WiFi.hostname(nomhost);
  Serial.println(WiFi.hostname());
  Serial.println("Starting UDP");
  Udp.begin(outPort);
  Serial.print("Local port: ");
  Serial.println(Udp.localPort());
  delay(100);
  sds.begin();
  Serial.println(sds.queryFirmwareVersion().toString()); // prints firmware version
  Serial.println(sds.setActiveReportingMode().toString()); // ensures sensor is in 'active' reporting mode
  Serial.println(sds.setCustomWorkingPeriod(1).toString()); // sensor sends data every 1 minutes
}
void loop() {
  Serial.println(analogRead(GAZ1_A0));
  if (dht12.get() == 0) {
    temperatre = (float)dht12.cTemp;
    humidite   = (float)dht12.humidity;
    Serial.print("Temperature       : ");
    
    Serial.println(temperatre);
    Serial.print("Humidite relative : ");
    Serial.println(humidite);
  }
  PmResult pm = sds.readPm();
  if (pm.isOk()) {
    pm_25 = (float)pm.pm25;
    pm_10 = (float)pm.pm10;
    Serial.print("PM2.5             = ");
    Serial.println(pm_25);
    Serial.print("PM10              = ");
    Serial.println(pm_10);
    //    Serial.println(pm.toString());
  } else {
    // notice that loop delay is set to 5s (sensor sends data every 3 minutes) and some reads are not available
    //Serial.print("Probleme de lecture SDS011: ");
    //Serial.println(pm.statusToString());
    Serial.print("PM2.5             : ");
    Serial.println(pm_25);
    Serial.print("PM10              : ");
    Serial.println(pm_10);
  }
  ///////////ENVOIS OSC //////////////
  OSCMessage msg(OSCVar); // /GAZ1 pour ce capteur
  //  les valeurs sont en long pour pd
  msg.add((float)analogRead(GAZ1_A0));
  msg.add((float)temperatre);
  msg.add((float)humidite);
  msg.add((float)pm_25);
  msg.add((float)pm_10);

  Udp.beginPacket(outIP, outPort);
  msg.send(Udp);
  Udp.endPacket();
  msg.empty();
  delay(temps_milli);
}
</code>