用户异常（恐慌/中止/断言）Nodemcu

Question

Nodemcu 运行正常，几秒钟后出现错误，所以总是要求重新启动。即使网站和串行打印上都出现数字，但是出现文字后就会出现重启，然后慢几秒就会出现重启？

这是已解码的错误代码

0x4020af5c: operator new (unsigned int) at /home/gonit/.arduino15/packages/esp8266 /hardware/esp8266/3.1.2/cores/esp8266/abi.cpp line 44

8x40208604: AsyncWebServer::on (char const*, unsigned char, std::function) at

/home/gonit/Arduino/libraries/ESPAsyncWebServer/src/WebServer.cpp line 149

0x40214208: std::_Function_handler >::_M_manager(std::_Any_data &, const std::_Any_data &, std::_Manager_operation) at /home/gonit/.arduino15/packages /esp8266/tools/xtensa-lx106-elf-gcc/3.1.0-gcc10.3-e5f9fec/xtensa-1x106-elf/include /c++/10.3.0/bits/std_function.h line 268

8x402011f8: std:: Function_handler >::_M_invoke(const std::_Any_data &, AsyncWebServerRequest *&&) at /home/gonit/.arduino15/packages/esp8266/tools/xtensa- 1x106-elf-gcc/3.1.0-gcc10.3-e5f9fec/xtensa-1x106-elf/include/c++/18.3.0 /bits/std_function.h line 289

0x4020a38d: String::operator= (char const*) at /home/gonit/. arduino15/packages /esp8266/hardware/esp8266/3.1.2/cores/esp8266/WString.cpp line 319

8x482027b2: Loop() at /home/gonit/.arduino15/packages/esp8266/tools/xtensa-lx106- elf-gcc/3.1.0-gcc10.3-e5f9fec/xtensa-lx106-elf/include/c++/10.3.0 /bits/std_function.h line 303

0x402142d4: std:: Function_handler >::_M_manager(std::_Any_data &, const std::_Any_data &, std::_Manager_operation) at /home/gonit/.arduino15/packages /esp8266/tools/xtensa-lx106-elf-gcc/3.1.0-gcc10.3-e5f9fec/xtensa-lx106-elf/include /c++/10.3.0/bits/std_function.h line 268

0x402011a0: std::_Function_handler >::_M_invoke(const std::_Any_data &, AsyncWebServerRequest *&&) at /home/gonit/.arduino15/packages/esp8266/tools/xtensa- 1x106-elf-gcc/3.1.0-gcc10.3-e5f9fec/xtensa-lx106-elf/include/c++/10.3.0 /bits/std_function.h line 289

8x40202a77: ESP8266WiFiAPClass::softAPConfig(IPAddress, IPAddress, IPAddress) at /home/gonit/.arduino15/packages/esp8266/hardware/esp8266/3.1.2/libraries /ESP8266WiFi/src/ESP8266WiFiAP.cpp line 259

8x4820b2f8: Loop_wrapper() at /home/gonit/.arduino15/packages/esp8266/hardware /esp8266/3.1.2/cores/esp8266/core_esp8266_main.cpp line 258

代码

// Import required libraries
#include <Arduino.h>
#ifdef ESP32
#include <WiFi.h>
#include <AsyncTCP.h>
#elif defined(ESP8266)
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#endif
#include <ESPAsyncWebServer.h>
#include <FS.h>
#include <ArduinoJson.h>

String temp = "";
String pressure = "";
int range;
String rain = "";
float lux;
String light = "";

/* Put your SSID & Password */
const char* ssid = "Weather Station";  // Enter SSID here
const char* password = "12345678";  //Enter Password here

/* Put IP Address details */
IPAddress local_ip (192,168,1,1);
IPAddress gateway(192,168,1,1);
IPAddress subnet(255,255,255,0);

// Create AsyncWebServer object on port 80
AsyncWebServer server(80);

String processor(const String& var){
  //Serial.println(var);
  if(var == "TEMP"){
    return temp;
  }
  else if(var == "PRESSURE"){
    return pressure;
  }
  else if(var == "RAIN"){
    return rain;
  }
    else if(var == "LIGHT"){
    return light;
  }
  return String();
}

void setup() {
  // Initialize Serial port
  Serial.begin(9600);
  while (!Serial) continue;

  if(SPIFFS.begin()==true) {
    Serial.println("SPIFFS initialised OK");
  }

  WiFi.softAP(ssid, password);
  WiFi.softAPConfig(local_ip, gateway, subnet);
  delay(100);
}

void loop() {
  const size_t capacity = JSON_OBJECT_SIZE(128);
  DynamicJsonDocument doc(capacity);
  
  DeserializationError error = deserializeJson(doc, Serial);
  if (error) {
    Serial.print(F("deserializeJson() failed: "));
    Serial.println(error.c_str());
    return;
  }
  
  //serializeJson(doc, Serial);

  Serial.print("SUHU UDARA:  ");
  temp = String(doc["temperature"]);
  Serial.print(temp);
  Serial.println(" *C");
  
  Serial.print("TEKANAN UDARA:  ");
  pressure = String(doc["pressure"]);
  Serial.print(pressure);
  Serial.println(" hPa");

  Serial.print("CURAH HUJAN:  ");
  range = doc["range"];
    switch (range){
    case 0:
      rain = "HUJAN";
    break;
    case 1:
      rain = "PERINGATAN HUJAN";
    break;
    case 2:
      rain = "TIDAK HUJAN";
    break;
  }
  Serial.println(rain);

  Serial.print("KECERAHAN:  ");
  lux = doc["lux"];
    if(lux < 100){
    light = "GELAP";
  }
  else if(lux > 100){
    light = "TERANG";
  }
  Serial.println(light);
  Serial.println("-----------------------------------------");

  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/index.html", "text/html");
  });

  server.on("/assets/css/foundation.css", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/assets/css/foundation.css", "text/css");
  });

  server.on("/assets/js/vendor.js", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/assets/js/vendor.js", "text/js");
  });

  server.on("/assets/js/foundation.js", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/assets/js/foundation.js", "text/js");
  });
  
  server.on("/temp", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", temp.c_str());
  });
  server.on("/pressure", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", pressure.c_str());
  });
  server.on("/rain", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", rain.c_str());
  });
  server.on("/light", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", light.c_str());
  });

  server.begin();
  //end
}

Answer 1

由于

new

中存在异常，这可能意味着您的内存已用完。

您可能无法像这样在循环中使用

server.on()

。在设置中执行此操作并使用一些可访问这些值的可调用函数。甚至可能检查原子或互斥体，以免在更新过程中执行此操作