ESP8266_MQTT_MOTION_CLIMATE.ino

#include <ESP8266WiFi.h>
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"
#include <Wire.h>
#include <Adafruit_BMP280.h>

#define WLAN_SSID "*"
#define WLAN_PASS "*"

#define SERVER "*"
#define SERVERPORT 1883
#define PRESENCE_FEED "*"
#define TMPRTR_FEED "*"
#define PRSR_FEED "*"
#define SRVC_FEED "*"

#define SENSOR 13

unsigned long lastPub = 0;
int sleepInterval = 1800000;
int awakeTimeout = 30000;
int state = 0;
int prevState = 0;
int detectedCount = 0;

WiFiClient client;
Adafruit_MQTT_Client mqtt(&client, SERVER, SERVERPORT);
Adafruit_MQTT_Publish presence = Adafruit_MQTT_Publish(&mqtt, PRESENCE_FEED);
Adafruit_MQTT_Publish tmprtr = Adafruit_MQTT_Publish(&mqtt, TMPRTR_FEED);
Adafruit_MQTT_Publish prsr = Adafruit_MQTT_Publish(&mqtt, PRSR_FEED);
Adafruit_MQTT_Publish srvc = Adafruit_MQTT_Publish(&mqtt, SRVC_FEED);
Adafruit_BMP280 bmp;

void MQTT_connect() {
  int8_t ret;

  if (mqtt.connected()) {
    return;
  }

  uint8_t retries = 3;
  while ((ret = mqtt.connect()) != 0) { 
       mqtt.disconnect();
       delay(5000);
       retries--;
       if (retries == 0) {
         while (1);
       }
  }
}

void setup() {
  pinMode(SENSOR, INPUT);
  pinMode(LED_BUILTIN, OUTPUT);

  WiFi.begin(WLAN_SSID, WLAN_PASS);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
  };

  MQTT_connect();
  srvc.publish("Started");

  Wire.begin(5, 4);
  bmp.begin(0x76);
  bmp.setSampling(Adafruit_BMP280::MODE_NORMAL,
                  Adafruit_BMP280::SAMPLING_X2,
                  Adafruit_BMP280::SAMPLING_X16,
                  Adafruit_BMP280::FILTER_X16,
                  Adafruit_BMP280::STANDBY_MS_500);
  tmprtr.publish(bmp.readTemperature());
  prsr.publish(bmp.readPressure() / 133.322);

}

void loop() {
  state = digitalRead(SENSOR);
  digitalWrite(LED_BUILTIN, 1 - state);
  if (state) {
    if (!prevState) detectedCount++;
  }
  prevState = state;
  if (millis() > awakeTimeout) {
    MQTT_connect();
    presence.publish(detectedCount);
    delay(500);
    ESP.deepSleep(sleepInterval);
  }
}