ESP8266-12E hängt sich auf

#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space

#include <SimpleTimer.h>

#include <ESP8266WiFi.h>

#include <Adafruit_Sensor.h>

#include <Adafruit_BME280.h>

#include <BlynkSimpleEsp8266.h>

#include <Ticker.h> //watchdog

Ticker secondTick; //watchdog

volatile int watchdogCount = 0; //watchdog

volatile int zaehler = 0; //Zähler Benachrichtigung

SimpleTimer timer;

Adafruit_BME280 bme; // I2C

char auth[] = "***";

char ssid[] = "***";

char pass[] = "***";

int connectTimer;

// Messwertvariablen

float h, t, p, pin, dp, tc;

char temperatureFString[6];

char dpString[6];

char humidityString[6];

char pressureString[7];

char pressureInchString[6];

void ISRwatchdog() { //ISR = Interrupt Service Routine

  watchdogCount++;

  if (watchdogCount >= 8) { // Einheit in Sekunden [s]!!!

    ESP.reset();

  }

}

void WLANconnect() {

  if (WiFi.status() != WL_CONNECTED) {

    yield();

    Serial.println("keine Verbindung vorhanden - Reset");

    watchdogCount = 8; // Einheit [s]!!!

  } else {

    Serial.println("verbunden");

    h = bme.readHumidity(); //Berechnung Messwert

    tc = bme.readTemperature();

    t = tc * 1.8 + 32.0;

    dp = t - 0.36 * (100.0 - h);

    yield();

    p = bme.readPressure() / 100.0F;

    //t = (t-32)*5/9; //[°C]

    pin = 0.02953 * p;

    dtostrf(tc, 5, 1, temperatureFString);

    dtostrf(h, 5, 1, humidityString);

    dtostrf(p, 6, 1, pressureString);

    dtostrf(pin, 5, 2, pressureInchString);

    dtostrf(dp, 5, 1, dpString);

    yield();

    Blynk.virtualWrite(V0, temperatureFString); //Senden Messwert an BlynkApp

    Blynk.virtualWrite(V1, humidityString);

    Blynk.virtualWrite(V2, pressureString);

    Serial.print(temperatureFString);

    Serial.println(" °C");

    Serial.print(humidityString);

    Serial.println(" %");

    Serial.print(pressureString);

    Serial.println(" hPA");

    Serial.println();

    if (tc > 27 && h > 30){

    zaehler = zaehler +1;

    }

    watchdogCount = 0; // Einheit [s]!!!

  }

}

void setup()

{

  Serial.begin(115200);

  Blynk.begin(auth, ssid, pass);

  Wire.begin(D3, D4); //Sensor

  Wire.setClock(115200);

  bme.begin();

  if (!bme.begin()) {

    Serial.println("Could not find a valid BME280 sensor, check wiring!");

    while (1); //(dient als Wachtdog!, falls Verkabelung defekt - Notfalls Kabel tauschen!)

    WiFi.begin(auth, ssid); //WiFi Verbindung

    Serial.print("Connecting");

    while (WiFi.status() != WL_CONNECTED)

    {

      delay(500);

      Serial.print(".");

    }

    Serial.println();

    Serial.print("Connected, IP address: ");

    Serial.println(WiFi.localIP());

  }

  connectTimer = timer.setInterval(1000L, WLANconnect); //Aurfur alle x Sekunden

  yield();

  secondTick.attach(1, ISRwatchdog);

  yield();

  delay(10);

}

void loop() {

  Blynk.run();

  timer.run();

}