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ESP8266+BME280 influxDB Anbindung

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Ich habe lange gesucht ein Code für den ESP8266 mit einem BME280 Sensor zu finden.

Als Library habe ich nach viel testen, diese gefunden:

InfluxDB: https://github.com/tobiasschuerg/ESP8266_Influx_DB/
BME280:https://github.com/adafruit/Adafruit_BME280_Library
Diese lässt sich auch über die Bibliotheksverwaltung herunterladen:

Screenshot InfluxDB Lib in der Bibliotheksverwaltung
Screenshot BME280 Lib in der Bibliotheksverwaltung

Verkabelung ESP8266 und BME280

BME280 – ESP8266
SDA – D2
SCL – D1
GND – GND
VIN – 3V3

Mein Code erzeugt auch noch einen Webserver, auf dem die Daten angezeigt werden:

ESP8266 Webseite mit Messdaten


Der Code ist ein erster Draft und läuft jetzt erst knappe 10 Stunden. Ich optimiere zur Zeit noch. Tipps zur Verbesserung nehme ich gerne entgegen! 

#include <ESP8266WebServer.h>
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
#include <WiFiUdp.h>
#include <InfluxDb.h>

#define SEALEVELPRESSURE_HPA (1013.25)

#define INFLUXDB_HOST "INFLUXURL"
#define INFLUXDB_USER "INFLUXUSER"
#define INFLUXDB_PASS "INFLUXPASS"
#define INFLUXDB_DB "INFLUXDB"
unsigned int INFLUXDB_PORT = 8086; // INFLUXPort

Adafruit_BME280 bme;
Influxdb influx(INFLUXDB_HOST,INFLUXDB_PORT);


float temperature, humidity, pressure, altitude;

/*Put your SSID & Password*/
const char* ssid = "SSID";  // Enter SSID here
const char* password = "Passwort";  //Enter Password here



ESP8266WebServer server(80);              
 
void setup() {
  Serial.begin(115200);
  delay(100);
  
  bme.begin(0x76);   

  Serial.println("Connecting to ");
  Serial.println(ssid);
  //connect to your local wi-fi network
  WiFi.begin(ssid, password);

  //check wi-fi is connected to wi-fi network
  while (WiFi.status() != WL_CONNECTED) {
  delay(1000);
  Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected..!");
  Serial.print("Got IP: ");  Serial.println(WiFi.localIP());



  server.on("/", handle_OnConnect);
  server.onNotFound(handle_NotFound);

  server.begin();
  Serial.println("HTTP server started");
  
  influx.setDbAuth(INFLUXDB_DB, INFLUXDB_USER, INFLUXDB_PASS);

}

int loopCount = 0;

void loop() {
  server.handleClient();
  loopCount++;
  temperature = bme.readTemperature();
  humidity = bme.readHumidity();
  pressure = bme.readPressure() / 100.0F;
  altitude = bme.readAltitude(SEALEVELPRESSURE_HPA);
  
  if (temperature != 0.00){
    // Einzelabfrage: 
    //  InfluxData row("thermometer");
    //  row.addTag("node", "esp1");
    //  row.addTag("sensor", "temperature");
    //  row.addTag("mode", "pwm");
    //  row.addValue("loopCount", loopCount);
    //  row.addValue("temperature", temperature);
    //  influx.write(row);
    
     Serial.println("Sammel Thermometer Messungen"); 
     InfluxData measurement1 = measurementtemp();
     influx.prepare(measurement1);
    
    InfluxData measurement2 = measurementhum();
    influx.prepare(measurement2);
    
    InfluxData measurement3 = measurementhpa();
    influx.prepare(measurement3);
    boolean success = influx.write();
  
  }
     Serial.println("Warte 30 Sekunden"); 
    delay(30000);

}

void handle_OnConnect() {
  temperature = bme.readTemperature();
  humidity = bme.readHumidity();
  pressure = bme.readPressure() / 100.0F;
  altitude = bme.readAltitude(SEALEVELPRESSURE_HPA);
  server.send(200, "text/html", SendHTML(temperature,humidity,pressure,altitude)); 
  
}

InfluxData measurementtemp() {
  InfluxData row("thermometer");
  row.addTag("node", "esp1");
  row.addTag("sensor", "temperature");
  row.addTag("mode", "pwm");
  row.addValue("loopCount", loopCount);
  row.addValue("temperature", temperature);
  return row;
}


InfluxData measurementhum() {
  InfluxData row("thermometer");
  row.addTag("node", "esp1");
  row.addTag("sensor", "humidity");
  row.addTag("mode", "pwm");
  row.addValue("loopCount", loopCount);
  row.addValue("humidity", humidity);
  return row;
}


InfluxData measurementhpa() {
  InfluxData row("thermometer");
  row.addTag("node", "esp1");
  row.addTag("sensor", "pressure");
  row.addTag("mode", "pwm");
  row.addValue("loopCount", loopCount);
  row.addValue("pressure", pressure);
//  row.addValue("value", pressure);
  return row;
}



void handle_NotFound(){
  server.send(404, "text/plain", "Not found");
}


String SendHTML(float temperature,float humidity,float pressure,float altitude){
  String ptr = "<!DOCTYPE html>";
  ptr +="<html>";
  ptr +="<head>";
  ptr +="<title>ESP8266 Thermometer mit influxDB</title>";
  ptr +="<meta name='viewport' content='width=device-width, initial-scale=1.0'>";
  ptr +="<link href='https://fonts.googleapis.com/css?family=Open+Sans:300,400,600' rel='stylesheet'>";
  ptr +="<style>";
  ptr +="html { font-family: 'Open Sans', sans-serif; display: block; margin: 0px auto; text-align: center;color: #444444;}";
  ptr +="body{margin: 0px;} ";
  ptr +="h1 {margin: 50px auto 30px;} ";
  ptr +=".side-by-side{display: table-cell;vertical-align: middle;position: relative;}";
  ptr +=".text{font-weight: 600;font-size: 19px;width: 200px;}";
  ptr +=".reading{font-weight: 300;font-size: 50px;padding-right: 25px;}";
  ptr +=".temperature .reading{color: #F29C1F;}";
  ptr +=".humidity .reading{color: #3B97D3;}";
  ptr +=".pressure .reading{color: #26B99A;}";
  ptr +=".altitude .reading{color: #955BA5;}";
  ptr +=".superscript{font-size: 17px;font-weight: 600;position: absolute;top: 10px;}";
  ptr +=".data{padding: 10px;}";
  ptr +=".container{display: table;margin: 0 auto;}";
  ptr +=".icon{width:65px}";
  ptr +="</style>";
  ptr +="<script>\n";
  ptr +="setInterval(loadDoc,1000);\n";
  ptr +="function loadDoc() {\n";
  ptr +="var xhttp = new XMLHttpRequest();\n";
  ptr +="xhttp.onreadystatechange = function() {\n";
  ptr +="if (this.readyState == 4 && this.status == 200) {\n";
  ptr +="document.body.innerHTML =this.responseText}\n";
  ptr +="};\n";
  ptr +="xhttp.open(\"GET\", \"/\", true);\n";
  ptr +="xhttp.send();\n";
  ptr +="}\n";
  ptr +="</script>\n";
  ptr +="</head>";
  ptr +="<body>";
  ptr +="<h1>ESP8266 Weather Station</h1>";
  ptr +="<div class='container'>";
  ptr +="<div class='data temperature'>";
  ptr +="<div class='side-by-side icon'>";
  ptr +="<svg enable-background='new 0 0 19.438 54.003'height=54.003px id=Layer_1 version=1.1 viewBox='0 0 19.438 54.003'width=19.438px x=0px xml:space=preserve xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink y=0px><g><path d='M11.976,8.82v-2h4.084V6.063C16.06,2.715,13.345,0,9.996,0H9.313C5.965,0,3.252,2.715,3.252,6.063v30.982";
  ptr +="C1.261,38.825,0,41.403,0,44.286c0,5.367,4.351,9.718,9.719,9.718c5.368,0,9.719-4.351,9.719-9.718";
  ptr +="c0-2.943-1.312-5.574-3.378-7.355V18.436h-3.914v-2h3.914v-2.808h-4.084v-2h4.084V8.82H11.976z M15.302,44.833";
  ptr +="c0,3.083-2.5,5.583-5.583,5.583s-5.583-2.5-5.583-5.583c0-2.279,1.368-4.236,3.326-5.104V24.257C7.462,23.01,8.472,22,9.719,22";
  ptr +="s2.257,1.01,2.257,2.257V39.73C13.934,40.597,15.302,42.554,15.302,44.833z'fill=#F29C21 /></g></svg>";
  ptr +="</div>";
  ptr +="<div class='side-by-side text'>Temperature</div>";
  ptr +="<div class='side-by-side reading'>";
  //ptr +=(float)temperature; 
  ptr +=(float)temperature; 
  ptr +="<span class='superscript'>°C</span></div>";
  ptr +="</div>";
  ptr +="<div class='data humidity'>";
  ptr +="<div class='side-by-side icon'>";
  ptr +="<svg enable-background='new 0 0 29.235 40.64'height=40.64px id=Layer_1 version=1.1 viewBox='0 0 29.235 40.64'width=29.235px x=0px xml:space=preserve xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink y=0px><path d='M14.618,0C14.618,0,0,17.95,0,26.022C0,34.096,6.544,40.64,14.618,40.64s14.617-6.544,14.617-14.617";
  ptr +="C29.235,17.95,14.618,0,14.618,0z M13.667,37.135c-5.604,0-10.162-4.56-10.162-10.162c0-0.787,0.638-1.426,1.426-1.426";
  ptr +="c0.787,0,1.425,0.639,1.425,1.426c0,4.031,3.28,7.312,7.311,7.312c0.787,0,1.425,0.638,1.425,1.425";
  ptr +="C15.093,36.497,14.455,37.135,13.667,37.135z'fill=#3C97D3 /></svg>";
  ptr +="</div>";
  ptr +="<div class='side-by-side text'>Humidity</div>";
  ptr +="<div class='side-by-side reading'>";
  ptr +=(float)humidity; 
  ptr +="<span class='superscript'>%</span></div>";
  ptr +="</div>";
  ptr +="<div class='data pressure'>";
  ptr +="<div class='side-by-side icon'>";
  ptr +="<svg enable-background='new 0 0 40.542 40.541'height=40.541px id=Layer_1 version=1.1 viewBox='0 0 40.542 40.541'width=40.542px x=0px xml:space=preserve xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink y=0px><g><path d='M34.313,20.271c0-0.552,0.447-1,1-1h5.178c-0.236-4.841-2.163-9.228-5.214-12.593l-3.425,3.424";
  ptr +="c-0.195,0.195-0.451,0.293-0.707,0.293s-0.512-0.098-0.707-0.293c-0.391-0.391-0.391-1.023,0-1.414l3.425-3.424";
  ptr +="c-3.375-3.059-7.776-4.987-12.634-5.215c0.015,0.067,0.041,0.13,0.041,0.202v4.687c0,0.552-0.447,1-1,1s-1-0.448-1-1V0.25";
  ptr +="c0-0.071,0.026-0.134,0.041-0.202C14.39,0.279,9.936,2.256,6.544,5.385l3.576,3.577c0.391,0.391,0.391,1.024,0,1.414";
  ptr +="c-0.195,0.195-0.451,0.293-0.707,0.293s-0.512-0.098-0.707-0.293L5.142,6.812c-2.98,3.348-4.858,7.682-5.092,12.459h4.804";
  ptr +="c0.552,0,1,0.448,1,1s-0.448,1-1,1H0.05c0.525,10.728,9.362,19.271,20.22,19.271c10.857,0,19.696-8.543,20.22-19.271h-5.178";
  ptr +="C34.76,21.271,34.313,20.823,34.313,20.271z M23.084,22.037c-0.559,1.561-2.274,2.372-3.833,1.814";
  ptr +="c-1.561-0.557-2.373-2.272-1.815-3.833c0.372-1.041,1.263-1.737,2.277-1.928L25.2,7.202L22.497,19.05";
  ptr +="C23.196,19.843,23.464,20.973,23.084,22.037z'fill=#26B999 /></g></svg>";
  ptr +="</div>";
  ptr +="<div class='side-by-side text'>Pressure</div>";
  ptr +="<div class='side-by-side reading'>";
  ptr +=(float)pressure;
  ptr +="<span class='superscript'>hPa</span></div>";
  ptr +="</div>";
  ptr +="<div class='data altitude'>";
  ptr +="<div class='side-by-side icon'>";
  ptr +="<svg enable-background='new 0 0 58.422 40.639'height=40.639px id=Layer_1 version=1.1 viewBox='0 0 58.422 40.639'width=58.422px x=0px xml:space=preserve xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink y=0px><g><path d='M58.203,37.754l0.007-0.004L42.09,9.935l-0.001,0.001c-0.356-0.543-0.969-0.902-1.667-0.902";
  ptr +="c-0.655,0-1.231,0.32-1.595,0.808l-0.011-0.007l-0.039,0.067c-0.021,0.03-0.035,0.063-0.054,0.094L22.78,37.692l0.008,0.004";
  ptr +="c-0.149,0.28-0.242,0.594-0.242,0.934c0,1.102,0.894,1.995,1.994,1.995v0.015h31.888c1.101,0,1.994-0.893,1.994-1.994";
  ptr +="C58.422,38.323,58.339,38.024,58.203,37.754z'fill=#955BA5 /><path d='M19.704,38.674l-0.013-0.004l13.544-23.522L25.13,1.156l-0.002,0.001C24.671,0.459,23.885,0,22.985,0";
  ptr +="c-0.84,0-1.582,0.41-2.051,1.038l-0.016-0.01L20.87,1.114c-0.025,0.039-0.046,0.082-0.068,0.124L0.299,36.851l0.013,0.004";
  ptr +="C0.117,37.215,0,37.62,0,38.059c0,1.412,1.147,2.565,2.565,2.565v0.015h16.989c-0.091-0.256-0.149-0.526-0.149-0.813";
  ptr +="C19.405,39.407,19.518,39.019,19.704,38.674z'fill=#955BA5 /></g></svg>";
  ptr +="</div>";
  ptr +="<div class='side-by-side text'>Altitude</div>";
  ptr +="<div class='side-by-side reading'>";
  ptr +=(int)altitude;
  ptr +="<span class='superscript'>m</span></div>";
  ptr +="</div>";
  ptr +="</div>";
  ptr +="</body>";
  ptr +="</html>";
  return ptr;
}

Grafana Query: 

SELECT mean("temperature") FROM "DATABSE" WHERE ("node" = 'esp1') AND $timeFilter GROUP BY time($__interval) fill(null)

Weitere Pläne:
* Code Optimierung
** Entschlackung
** Webserver entfernen
** Influx Übergabeparameter überarbeiten
* Debug Mode (Serielle Ausgabe)
* Sleep Mode
* …

2 thoughts on “ESP8266+BME280 influxDB Anbindung”

  1. Hi,

    nice work, if you buy the correct bme280 and not a chinese faked one, it works nearly out of the box.
    But I got some problems with the http server – it works one time only… after a second connect attempt (from the same, or from another browser, or from another host in the network) nothing happens…
    Do you have the same or maybe similar problems?

    Cheers

    UG

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