code-grappe/src/main.cpp

#include "header.h"

using namespace std;

DHT capteurs[NOMBRE_CAPTEUR] = {DHT(23, DHT22), DHT(22, DHT22), DHT(21, DHT22), DHT(17, DHT22), DHT(2, DHT22)};
float temp[NOMBRE_CAPTEUR];
float hum[NOMBRE_CAPTEUR];

WiFiClient wifiClient;
PubSubClient mqttClient(wifiClient);
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "europe.pool.ntp.org", 0, 60000);
Pangodream_18650_CL BL(ADC_PIN, CONV_FACTOR, READS);

//--------------------  FONCTIONS  --------------------//

void setupMQTT(const char *adresse, int port)
{
  mqttClient.setServer(adresse, port);
}

void setupWIFI(const char *wifiName, const char *password)
{
  Serial.println('\n');

  WiFi.begin(wifiName, password);
  Serial.print("Connecting to ");
  Serial.print(wifiName);

  while (WiFi.status() != WL_CONNECTED)
  {
    delay(500);
    Serial.print('.');
  }
  Serial.println('\n');
  Serial.println("Connection established!");
  Serial.print("IP address:\t");
  Serial.println(WiFi.localIP());
}

void reconnect(void)
{
  Serial.println("Connecting to MQTT Broker...");
  while (!mqttClient.connected())
  {
    Serial.print(".");
    if (mqttClient.connect(ESPNAME,MQTT_USER,MQTT_MDP))
    {
      Serial.println("Connected.");
    }
  }
}

void initCapteurs(DHT *capteurs, int L)
{
  int i;
  for (i = 0; i < L; i++)
  {
    capteurs[i].begin();
  }
}

void lireCapteurs(DHT capteurs[], float temp[], float hum[], int L)
{
  int i;
  for (i = 0; i < L; i++)
  {
    *(temp + i) = capteurs[i].readTemperature();
    *(hum + i) = capteurs[i].readHumidity();
  }
}

void sleep()
{
  esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR);
  esp_deep_sleep_start();
}

//exemple d'une triple utilisation de valeur pour une fonction
std::tuple<int, int, int> getDate()
{
  time_t rawtime = timeClient.getEpochTime();
  struct tm *ti;
  ti = localtime(&rawtime);
  int year = ti->tm_year + 1900;
  int month = (ti->tm_mon + 1) < 10 ? 0 + (ti->tm_mon + 1) : (ti->tm_mon + 1);
  int day = (ti->tm_mday) < 10 ? 0 + (ti->tm_mday) : (ti->tm_mday);

  return std::make_tuple(year, month, day);
}

void ecrireMessage(char *txt, float *temp, float *hum, int L)
{
  int batte = BL.getBatteryChargeLevel();
  switch (L)
  {
  case 1:
    sprintf(txt, "|%s|%0.2f|%0.2f", GRAPPE, temp[0], hum[0]);
    break;
  case 2:
    sprintf(txt, "|%s|%0.2f %0.2f|%0.2f %0.2f", GRAPPE, temp[0], temp[1], hum[0], hum[1]);
    break;
  case 3:
    sprintf(txt, "|%s|%0.2f %0.2f %0.2f|%0.2f %0.2f %0.2f", GRAPPE, temp[0], temp[1], temp[2], hum[0], hum[1], hum[2]);
    break;
  case 4:
    sprintf(txt, "|%s|%0.2f %0.2f %0.2f %0.2f|%0.2f %0.2f %0.2f %0.2f", GRAPPE, temp[0], temp[1], temp[2], temp[3], hum[0], hum[1], hum[2], hum[3]);
    break;
  case 5:
    sprintf(txt, "|%s|%0.2f %0.2f %0.2f %0.2f %0.2f|%0.2f %0.2f %0.2f %0.2f %0.2f|%d", GRAPPE, temp[0], temp[1], temp[2], temp[3], temp[4], hum[0], hum[1], hum[2], hum[3], hum[4], batte);
    break;
  case 6:
    sprintf(txt, "|%s|%0.2f %0.2f %0.2f %0.2f %0.2f %0.2f|%0.2f %0.2f %0.2f %0.2f %0.2f %0.2f", GRAPPE, temp[0], temp[1], temp[2], temp[3], temp[4], temp[5], hum[0], hum[1], hum[2], hum[3], hum[4], hum[5]);
    break;
  default:
    Serial.println("Erreur, temp et hum sont trop longs : trop de capteurs");
    break;
  }
}

void setup()
{
  Serial.begin(9600);
  setupWIFI(SSID, PWD);
  setupMQTT(MQTT_ADRESS, MQTT_PORT);
  initCapteurs(capteurs, NOMBRE_CAPTEUR);
  timeClient.begin();
}

void loop()
{
  int year, month, day;
  int lenght;
  char time[30];
  char date[30];
  char msg[70];

  mqttClient.loop();
  if (!mqttClient.connected())
  {
    reconnect();
  }

  lireCapteurs(capteurs, temp, hum, NOMBRE_CAPTEUR);
  ecrireMessage(msg, temp, hum, NOMBRE_CAPTEUR);

  timeClient.update();
  timeClient.getFormattedTime().toCharArray(time, 30);

  tie(year, month, day) = getDate();
  lenght = sprintf(date, "%d-%d-%d ", year, month, day);
  sprintf(date + lenght, time);
  sprintf(date + strlen(date), msg);
  mqttClient.publish(TOPIC, date);

  sleep();

  delay(DELAI);
}