ESP32 and DHT22 abort() crashes

Hey guys,

thank you for this great project! Currentyl I'm just playing around with some sensors with my ESP32. I'm pretty new to microcontrollers.

I just got a SSD1306 working with espruino on my ESP32, it works flawless. Yesterday I had to connect a DHT22 and my ESP32 keeps crashing after a few measurements of the temp. This code isn't that spectacular, but I really don't know why its crashing. I always get that message:

WARNING: jshI2CSetup: driver installed, sda: 21 sdl: 22 freq: 50000,
=undefined
Booting up...
Temp: 22.1°C | RH: 40%
Temp: 22.1°C | RH: 39.7%
abort() was called at PC 0x4008280b on core 0
Backtrace: 0x40087818:0x3ffb04a0 0x40087917:0x3ffb04c0 0x4008280b:0x3ffb04e0 0x400828f9:0x3ffb0510 0x400d3256:0x3ffb0530 0x400829d4:0x3ffb0550 0x40116595:0x3ffb0570 0x40082c9e:0x3ffb0590 0x40082b78:0x3ffb05c0 0x40082c73:0x3ffb05e0 0x40081711:0x3ffb0600
================= CORE DUMP START =================

After the core dump I see:

E (29281) esp_core_dump: Skipped 1 tasks with bad TCB!
E (29326) esp_core_dump: Crashed task has been skipped!
Rebooting...
ets Jun 8 2016 00:22:57
rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0008,len:8
load:0x3fff0010,len:1932
ho 0 tail 12 room 4
load:0x40078000,len:10012
load:0x40080000,len:252
entry 0x40080034

It doesn't matter how often I read the DHT. It crashes after two measurements and after none.
The DHT is connected to GPIO15 with a pullup resistor (10k). It keeps crashing even without WiFi and a webserver. You can see my wiring (without the oled) attached.

My code:

I2C1.setup({scl:D22,sda:D21});
var g = require("SSD1306").connect(I2C1, start,{
  contrast: 255 
});

require("FontDennis8").add(Graphics);
g.setFontDennis8();

function start(){
  log("Booting up...");
  var ssid = "SSID";
  var pw = "PW";
  
  readTemp(D15);
  
  if(connectWifi(ssid, pw)){
   if(startWebserver(8080)){
      log("Let's get started!"); 
   }  
  }
}

function connectWifi(ssid, password){
  var wifi = require('Wifi');
  //wifi.setHostname("Disane_ESP32");
  var ip = wifi.getIP().ip;
  if(ip != "0.0.0.0" && ip){
    log("IP: "+ip);
    return true;
  }else{
    wifi.connect(ssid, {password: password}, function(err) {
      if (err) {
        log("Connection error: "+err);
        return false;
      }
      log('Connected to Wifi: '+ ip);
      //wifi.save(); // Next reboot will auto-connect
      return true;
    });
  }
}

function startWebserver(port){
  log("Starting Webserver...");
  var http = require("http");
  http.createServer(function (req, res) {
    res.writeHead(200);
    res.end("Hello World");
  }).listen(port);
  return true;
}


function readTemp(pin){
  
  //log("Reading temp and RH");
  //pinMode(D15, input_pullup);
  var dht = require("DHT22").connect(pin);
  setInterval(function(){
    dht.read(function (a) {
      if(a.err){
        log("Error | checksumError: "+a.checksumError);
      }else{
        log("Temp: "+a.temp.toFixed(2).toString()+"°C | RH: "+a.rh.toFixed(2).toString()+"%", 8);
      }
    });
  },5*1000);
}



function log(text, fs = 5){
  g.clear();
  console.log("["+Date.now() +"]: " +text);
  //g.setFontVector(fs);
  g.drawString(text,2,2);
  // write to the screen
  g.flip();
}

Does anybody of you have a clue?

1 Attachment