commit 4045bd1d08e1f9ab5db03346f98660ffc1269f16
Author: losted <theext4@yandex.ru>
Date:   Mon May 7 21:10:20 2018 +0300

    initial commit

diff --git a/src/backend.ino b/src/backend.ino
new file mode 100644
index 0000000..92938db
--- /dev/null
+++ b/src/backend.ino
@@ -0,0 +1,196 @@
+//backend
+#include <BH1750.h>
+#include <BMP280.h>
+#include <Wire.h>
+#include <NTPClient.h> 
+#include <WiFiUdp.h> 
+#include <ESP8266WiFi.h>
+#include <WiFiClient.h>
+#include <ESP8266mDNS.h>
+#include "DHTesp.h"
+#include <DallasTemperature.h>
+#include <OneWire.h>
+#include "../wifi.h"
+#include "Adafruit_MQTT.h"
+#include "Adafruit_MQTT_Client.h"
+
+float inTemp,humid,extTemp;
+double bmpTemp,pressure,altitude,lux;
+
+const short bmpsda = 5, bmpscl = 4, lightSCL = 1, lightSDA = 2, dhtpin = 10;
+
+BMP280 bmp;
+#define P0 1013.25
+
+DHTesp dht;
+#define ONE_WIRE_BUS 2  // DS18B20 pin
+OneWire oneWire(ONE_WIRE_BUS);
+DallasTemperature DS18B20(&oneWire);
+
+WiFiClient client;
+Adafruit_MQTT_Client mqtt(&client, "192.168.100.102", 1883);
+Adafruit_MQTT_Publish extTempMQTT = Adafruit_MQTT_Publish(&mqtt, "externalTemp");
+Adafruit_MQTT_Publish inTempMQTT = Adafruit_MQTT_Publish(&mqtt, "inTemp");
+Adafruit_MQTT_Publish humidMQTT = Adafruit_MQTT_Publish(&mqtt, "humid");
+Adafruit_MQTT_Publish bmpTempMQTT = Adafruit_MQTT_Publish(&mqtt, "bmpTemp");
+Adafruit_MQTT_Publish pressureMQTT = Adafruit_MQTT_Publish(&mqtt, "pressure");
+Adafruit_MQTT_Publish altitudeMQTT = Adafruit_MQTT_Publish(&mqtt, "altitude");
+
+BH1750 lightMeter;
+
+void setup(){
+  Serial.begin(115200);
+  //==WIFI CONNECT==
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(250);
+    Serial.print(".");
+  }
+  Serial.println("Connected to " + String(ssid) + "; IP address: " + WiFi.localIP());
+  MDNS.begin("esp8266-backend");
+  dht.setup(dhtpin);
+  //==BMP INIT==
+  if(!bmp.begin(bmpsda,bmpscl)){
+      Serial.println("BMP init failed!");
+  }
+  else {
+    Serial.println("BMP init success!");  
+    bmp.setOversampling(4);
+  }
+  
+  //BH1750
+  Wire.begin(lightSCL, lightSDA);
+  // On esp8266 you can select SCL and SDA pins using Wire.begin(D4, D3);
+  if (!lightMeter.begin(BH1750::CONTINUOUS_HIGH_RES_MODE))
+    Serial.println("lightMeter error!");
+
+
+  Serial.println("Go!");
+}
+
+void loop(){
+  // Serial.println("DHT");
+  getAccurateDHT();
+  // Serial.println("DS18B20");
+  getDS18();
+  // Serial.println("BMP280");
+  getBMP();
+  // Serial.println("MQTT");
+  MQTT_loop();
+}
+
+void MQTT_loop() {
+  MQTT_connect();
+
+  if (! extTempMQTT.publish(extTemp)) {
+    Serial.println(F("Failed"));
+  }
+  if (! inTempMQTT.publish(inTemp)) {
+    Serial.println(F("Failed"));
+  }
+  if (! humidMQTT.publish(humid)) {
+    Serial.println(F("Failed"));
+  }
+  if (! bmpTempMQTT.publish(bmpTemp)) {
+    Serial.println(F("Failed"));
+  }
+  if (! pressureMQTT.publish(pressure)) {
+    Serial.println(F("Failed"));
+  }
+  if (! altitudeMQTT.publish(altitude)) {
+    Serial.println(F("Failed"));
+  }
+
+  if(! mqtt.ping()) {
+    mqtt.disconnect();
+  }
+}
+
+void MQTT_connect() {
+  int8_t ret;
+
+  // Stop if already connected.
+  if (mqtt.connected()) {
+    return;
+  }
+
+  // Serial.print("Connecting to MQTT... ");
+
+  uint8_t retries = 3;
+  while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
+       Serial.println(mqtt.connectErrorString(ret));
+       Serial.println("Retrying MQTT connection in 5 seconds...");
+       mqtt.disconnect();
+       delay(5000);  // wait 5 seconds
+       retries--;
+       if (retries == 0) {
+         // basically die and wait for WDT to reset me
+         while (1);
+       }
+  }
+  Serial.println("MQTT Connected!");
+}
+
+//====================IN PROGRESS===================
+void getLight(){
+  lux = lightMeter.readLightLevel();
+
+}
+
+//===================WELL DONE=======================
+void getBMP(){
+  char result = bmp.startMeasurment();
+  if(result!=0){
+    delay(result);
+    result = bmp.getTemperatureAndPressure(bmpTemp,pressure);
+      if(result!=0){
+        altitude = bmp.altitude(pressure,P0);
+      }
+      else {
+        Serial.println("BMP Error, result == 0");
+      }
+  }
+  else {
+    Serial.println("BMP Error, result == 0");
+  }
+  delay(100);
+}
+
+void getDS18(){
+  do {
+    DS18B20.requestTemperatures(); 
+    // Serial.println("request done");
+    extTemp = DS18B20.getTempCByIndex(0);
+    // Serial.println(extTemp);
+  } while (extTemp == 85.0 || extTemp == (-127.0));
+
+}
+
+void serialPrint() {
+  //bmp
+  Serial.print("T = \t");Serial.print(bmpTemp,2); Serial.print(" degC\t");
+  Serial.print("P = \t");Serial.print(pressure,2); Serial.print(" mBar\t");
+  Serial.print("A = \t");Serial.print(altitude,2); Serial.println(" m");
+  //ds18
+  Serial.print("Temperature: ");
+  Serial.println(extTemp);
+  //dht
+  Serial.print("internal: ");
+  Serial.print(humid);
+  Serial.print(" ");
+  Serial.println(inTemp);
+}
+
+void getAccurateDHT(){
+  humid = 0.0;
+  inTemp = 0.0;
+  for (int i = 0;i < 3; ++i) {
+    delay(dht.getMinimumSamplingPeriod());
+    humid += (dht.getHumidity())/3.0;
+    inTemp += (dht.getTemperature())/3.0;
+  }
+  // if (humid == "nan" || inTemp == "nan") { 
+  //   getAccurateDHT();
+  // }
+}