esp8266的草图会以随机间隔不断崩溃的原因？怎么解决？

我无法弄清楚为什么我的草图会以随机间隔不断崩溃
我已经做了一个 CrashDecode，但不幸的是，这对我的技能水平没有太大帮助。
基本上我得到这个例外：
代码：全选Exception (0):
epc1=0x4000e25d epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000000 depc=0x00000000

>>>stack>>>

ctx: cont
sp: 3ffefac0 end: 3ffefe50 offset: 0190
3ffefc50:  ffffffff 3ffeecbc 3ffeecb8 40100ece  
3ffefc60:  3ffe9934 7fffffff 00000000 00000020  
3ffefc70:  ffffffff 0000000f 00000000 40100404  
3ffefc80:  c003b025 00000000 0000001f 40100168  
3ffefc90:  00000005 00000000 00000020 00000022  
3ffefca0:  3fffc200 40100340 3fffc258 4000050c  
3ffefcb0:  4000067d 00000030 00000010 ffffffff  
3ffefcc0:  00000000 f3b9abe0 38d79cc3 00000000  
3ffefcd0:  00004bc6 f3b9abe0 00000000 fffffffe  
3ffefce0:  0000be93 3fffc6fc 8f2dabe0 4bc6a7f0  
3ffefcf0:  00000000 c008da42 00000000 00000030  
3ffefd00:  402011c8 14c975f8 60000304 00000005  
3ffefd10:  00004bc6 00000000 00000000 fffffffe  
3ffefd20:  00000000 3fffc6fc 00000000 3ffee990  
3ffefd30:  00000000 3fffdad0 3ffee9d0 00000030  
3ffefd40:  40102838 3fffc200 00000022 00000000  
3ffefd50:  4023447a 00000030 0000001b ffffffff  
3ffefd60:  40201050 3ffeee30 402011d8 00000000  
3ffefd70:  00000000 00000000 00000000 fffffffe  
3ffefd80:  ffffffff 3fffc6fc 00000001 3ffe85bc  
3ffefd90:  00000000 3fffdad0 3ffee9d0 00000030  
3ffefda0:  c008da42 4bc6a7f0 c008da42 00000000  
3ffefdb0:  c008da42 00000000 4bc6a7f0 00000000  
3ffefdc0:  00000000 00000001 401001e4 4bc6a7f0  
3ffefdd0:  00000000 00000000 3ffeebc4 40206a05  
3ffefde0:  38d79cc2 00000000 00001388 411f1e8d  
3ffefdf0:  00000000 00000000 00000000 3ffe84f0  
3ffefe00:  3fffdad0 00000000 3ffe84f0 40206b5a  
3ffefe10:  00000000 00000000 00000001 40100168  
3ffefe20:  3fffdad0 00000000 3ffee990 3ffee9d0  
3ffefe30:  3fffdad0 00000000 3ffee990 402011f8  
3ffefe40:  feefeffe feefeffe 3ffe85bc 40100515  
<< 3000 || powertmp < 2 ) {
    return;
  }

  power = powertmp;

  //Find kwh elapsed
  elapsedkWh = (1.0 * pulseCount/(ppwh * 1000)); //multiply by 1000 to convert pulses per wh to kwh

}


这是完整的循环代码：第 422 行标记为第二个 DHT 块开始的位置
代码：全选void loop(void){
  httpServer.handleClient();

  if( millis() >= rebootInterval ) {
    ESP.restart();
  }


  // read front DHT
  if ( millis() > front.timer ) {
    //Serial.print("DHT front ... ");

    //// Read sensor
   float tmpTemp = dhtfront.readTemperature();
   float tmpHumidity = dhtfront.readHumidity();

    // Check if any reads failed and exit early (to try again).
    if (isnan(tmpHumidity) or isnan(tmpTemp)) {
      //Serial.println("Failed to read front sensor!");
      front.timer = millis() + dhtDelayFail;    // if sensor reading failed try again after FAILFREQUENCY
    } else {
      //Serial.println("OK");

      front.temp = tmpTemp;
      front.humidity = tmpHumidity;

      front.timer = millis() + dhtDelayRead;

      // Compute heat index and dewpoint
      front.dew = dewPoint(front.temp, front.humidity);
      front.hi = dhtfront.computeHeatIndex(front.temp, front.humidity, false);

      printDhtSerial(front);   //// printing it all on the Serial if we actually got values
    }

  }


  // read door DHT
  if ( millis() > door.timer ) {                      // <<<< line 422 in sketch that is being complained about in the decode
    //Serial.print("DHT door ... ");

    //// Read sensor
   float tmpTemp = dhtdoor.readTemperature();
   float tmpHumidity = dhtdoor.readHumidity();

    // Check if any reads failed and exit early (to try again).
    if (isnan(tmpHumidity) or isnan(tmpTemp)) {
      //Serial.println("Failed to read door sensor!");
      door.timer = millis() + dhtDelayFail;    // if sensor reading failed try again after FAILFREQUENCY
    } else {
      //Serial.println("OK");

      door.temp = tmpTemp;
      door.humidity = tmpHumidity;

      door.timer = millis() + dhtDelayRead;

      // Compute heat index and dewpoint
      door.dew = dewPoint(door.temp, door.humidity);
      door.hi = dhtdoor.computeHeatIndex(door.temp, door.humidity, false);

      printDhtSerial(door);   //// printing it all on the Serial if we actually got values
    }

  }


  if ((relay1.offDelay > 0) && ((millis() - relay1.lastSwitch) > relay1.offDelay)) {
    relay1.status = OFF;
    digitalWrite(relay1.pin, relay1.status);
  }

}

但我什至不知道从哪里开始为什么这两个会导致崩溃，
在此先感谢。
草图有点长，但它似乎总是崩溃，因为相同的堆栈跟踪指向相同的 2 条有问题的行
很高兴分享整个草图，但如果这有帮助的话。