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#include <InfluxDbClient.h>
#include <ESP8266WiFiMulti.h>
ESP8266WiFiMulti wifiMulti;
 
#include <OneWire.h>
#include <DallasTemperature.h>
 
#define ONE_WIRE_BUS D5
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
 
union {
 uint64_t the_long_long;
 uint32_t the_longs[2];
 uint8_t the_shorts[8];
} devAddr;
 
// WiFi AP SSID
#define WIFI_SSID ""
// WiFi password
#define WIFI_PASSWORD ""
int status = WL_IDLE_STATUS;     // the Wifi radio's status
 
// InfluxDB server url, e.g. http://192.168.1.48:8086 (don't use localhost, always server name or ip address)
#define INFLUXDB_URL ""
// InfluxDB database name 
#define INFLUXDB_DB_NAME ""
 
// Single InfluxDB instance
InfluxDBClient client(INFLUXDB_URL, INFLUXDB_DB_NAME);
 
// Define data point with measurement name 'device_status`
Point point("temperature");
 
  int16_t i, j;
  char query[160];
 
uint32_t lasttime;
    
void setup() 
{
  char dummytext[20];
 
  Serial.begin(115200); //Begin serial communication
  Serial.println("Arduino Digital Temperature // Serial Monitor Version"); //Print a message  
  pinMode(D2, OUTPUT);
  
  // Connect WiFi
  Serial.println("Connecting to WiFi");
  WiFi.mode(WIFI_STA);
  wifiMulti.addAP(WIFI_SSID, WIFI_PASSWORD);
  while (wifiMulti.run() != WL_CONNECTED) 
  {
    Serial.print(".");
    delay(100);
  }
  Serial.print ( "IP address: " );
  Serial.println ( WiFi.localIP() );
 
 
  // Check server connection
  if (client.validateConnection()) 
  {
    Serial.print("Connected to InfluxDB: ");
    Serial.println(client.getServerUrl());
  } 
  else 
  {
    Serial.print("InfluxDB connection failed: ");
    Serial.println(client.getLastErrorMessage());
  }  
 
  // You can specify the time server pool and the offset, (in seconds)
  // additionaly you can specify the update interval (in milliseconds).
  //NTPClient timeClient(ntpUDP, "se.pool.ntp.org", 0, 120000);
  timeSync("UTC", "se.pool.ntp.org", "pool.ntp.org");
 
  oneWire.reset() ;
  lasttime = millis();
  
  sensors.begin();  
  Serial.print(sensors.getDS18Count());
  Serial.println(" devices found");
  for (i=0; i<sensors.getDS18Count(); i++)
  {
    sensors.getAddress(devAddr.the_shorts, i);
    sprintf(query,"-x 0x%8lx%8lx",devAddr.the_longs[1],devAddr.the_longs[0]);
    Serial.println(query);
    sprintf(query,"-ll %llu",devAddr.the_long_long);
    Serial.println(query);
  }  
}
 
void loop() 
{
  digitalWrite(D2, LOW);   // turn the LED on (HIGH is the voltage level)
  delay(10);              // wait for a second
  digitalWrite(D2, HIGH);    // turn the LED off by making the voltage LOW
  Serial.print(".");
  if ((millis()-lasttime) > 10000)
  {
    lasttime = millis();
 
    sensors.requestTemperatures();  
 
    for (i=0; i<sensors.getDS18Count(); i++)
    {
      sensors.getAddress(devAddr.the_shorts, i);
 
      // Add data
      point.clearTags();
      point.clearFields();
      sprintf(query,"%llu", devAddr.the_long_long);
      point.addTag("sensorID", query);
      point.addField("value", sensors.getTempCByIndex(i));
 
      // Write data
      Serial.print("Writing: ");
      Serial.println(point.toLineProtocol());
    
      // If no Wifi signal, try to reconnect it
      if ((WiFi.RSSI() == 0) && (wifiMulti.run() != WL_CONNECTED))
        Serial.println("Wifi connection lost");
      // Write point
      if (!client.writePoint(point)) 
      {
        Serial.print("InfluxDB write failed: ");
        Serial.println(client.getLastErrorMessage());
      }
    }
  }
  delay(500);              // wait for a second
 
}