NodeMCU Messung Smarthome

#include <Wire.h>
#include <ESP8266WiFi.h>
#define CYCLE 1800000                               //Hier die Zeit in Millisekunden angeben (1800000 sind 30 minuten)
#include <Bme280BoschWrapper.h>
Bme280BoschWrapper bme280(true);

const char* ssid     = "Hier_dein_Wlanname";        //Wlan Name eingeben
const char* password = "Hier_dein_Wlanpasswort";    //Wlan Passwort eingeben
const char* host = "192.168.0.xxx";                 //IP Adresse des Raspi eingeben
unsigned long value = 0;
unsigned int lastcall = CYCLE;
int conn_time;

void setup() {
  Serial.begin(115200);
  delay(10);

    while(!bme280.beginI2C(0x76))                   //I2C adresse des BME280 standartmäsig 0x76
    {
      Serial.println("Cannot find sensor.");
      delay(1000);
    }

  // We start by connecting to a WiFi network

  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
    conn_time++;
    if (conn_time > 20) {
      break;
    }
  }
  if (WiFi.status() == WL_CONNECTED) {
    Serial.println("");
    Serial.println("WiFi connected");
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP());
  }
  else {
    Serial.println("");
    Serial.println("no WiFi connection");
    ESP.deepSleep(100000);
    Serial.println("gone to sleep");
  }
}

void loop() {

  bool ok = bme280.measure();

  while (millis() - lastcall < CYCLE) {
    delay(1);
  }
  lastcall = millis();
  ++value;

  Serial.print("connecting to ");
  Serial.println(host);

  // Use WiFiClient class to create TCP connections
  WiFiClient client;
  const int httpPort = 80;
  if (!client.connect(host, httpPort)) {
    Serial.println("connection failed");
    return;
  }

  // We now create a URI for the request
  String url = "/messung.php";
  url += "?temp=";
  url += (bme280.getTemperature()/100.0);
  url += "_*C";
  url += "&hum=";
  url += (bme280.getHumidity()/1024.0);
  url += "_%Luftfeuchtigkeit";
  url += "&druck=";
  url += (bme280.getPressure()/100.0);
  url += "_hPa";


  Serial.print("Requesting URL: ");
  Serial.println(url);

  // This will send the request to the server
  client.print(String("GET ") + url + " HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" +
               "Connection: close\r\n\r\n");
  delay(1000);

  // Read all the lines of the reply from server and print them to Serial
  while (client.available()) {
    String line = client.readStringUntil('\r');
    Serial.print(line);
  }

  Serial.println();
  Serial.println("closing connection");
}