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你好，我正在尝试使用 arduinoJson 库发送 JSON 对象。当它是一个小的 json 对象时一切正常，但是当它变大时，esp8266 崩溃并重置。我可以在调试时看到它创建了 json 对象，但是当它使用 ajax POST 方法发送它时它崩溃了。在图片中，您可以看到串行监视器，您还可以看到创建了 json 对象，但是当它发送它时，esp8266 崩溃并重新启动Serial debug。我相信问题与这行代码有关可能的问题

esp8266 上的代码如下所示。

#include <Arduino.h>
#include <ArduinoJson.h>
#include <ESP8266WiFi.h>
#include <Hash.h>
#include <WiFiClientSecure.h>
#include <ESPAsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <FS.h>
#include <Wire.h>
#include "max6675.h"
#include <UniversalTelegramBot.h>
#define BOTtoken "1863133375:AAFE3m83AFQYaRjqOas2Kr-DB5fhbONCZ80"
#define CHAT_ID "-599306428"


const int thermoCS = D8;
const int thermoCLK = D5;
int x = 0;
int r[] = {1,1,1,1,1};
int lk;

int TEMP1[121];
int TEMP2[121];
int TEMP3[121];
int TEMP4[121];
int TEMP5[121];

MAX6675 thermocouple_TEMP1(thermoCLK, thermoCS, D7);
MAX6675 thermocouple_TEMP2(thermoCLK, thermoCS, D6);
MAX6675 thermocouple_TEMP3(thermoCLK, thermoCS, D2);
MAX6675 thermocouple_TEMP4(thermoCLK, thermoCS, D1);
MAX6675 thermocouple_TEMP5(thermoCLK, thermoCS, D0); // esp8266 skal bruge D0, hvor ESP32 skal bruge 0
WiFiClientSecure client;
X509List cert(TELEGRAM_CERTIFICATE_ROOT);
WiFiClientSecure secure_client;
UniversalTelegramBot bot(BOTtoken, secure_client);
// Replace with your network credentials
const char* ssid = "Telenor646209_EXT";
const char* password = "";

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

String temp5() {
  float f = abs(thermocouple_TEMP5.readCelsius()) ;
    return String(f);
    client.stop();
}
String temp4() {
  float d = abs(thermocouple_TEMP4.readCelsius()) ;
    return String(d);
    client.stop();
}
String temp3() {
  float s = abs(thermocouple_TEMP3.readCelsius()) ;
    return String(s);
    client.stop();
}
String temp2() {
  float a = abs(thermocouple_TEMP2.readCelsius());
    return String(a);
    client.stop();
}

String temp1() {
  float m = abs(thermocouple_TEMP1.readCelsius());
    return String(m);
    client.stop();
}
String TEMP() {
  String Json;
  StaticJsonDocument<54000> doc;
JsonArray Temp1 = doc.createNestedArray("Temp1");
JsonArray Temp2 = doc.createNestedArray("Temp2");
JsonArray Temp3 = doc.createNestedArray("Temp3");
JsonArray Temp4 = doc.createNestedArray("Temp4");
JsonArray Temp5 = doc.createNestedArray("Temp5");
  for (int i = 0; i <= x-1; i++) {
  Temp1.add(TEMP1[i]);
  Temp2.add(TEMP2[i]);
  Temp3.add(TEMP3[i]);
  Temp4.add(TEMP4[i]);
  Temp5.add(TEMP5[i]);
  }
  serializeJson(doc, Json);
  Serial.println(Json);
    return Json;
    client.stop();
}


void setup(){
  // Serial port for debugging purposes
  configTime(0, 0, "pool.ntp.org");      // get UTC time via NTP
  secure_client.setTrustAnchors(&cert); // Add root certificate for api.telegram.org
  Serial.begin(9600);
  // Initialize SPIFFS
  if(!SPIFFS.begin()){
    //Serial.println("An Error has occurred while mounting SPIFFS");
    return;
  }
  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    //Serial.println("Connecting to WiFi..");
  }
  Serial.println(WiFi.localIP());
  // Print ESP32 Local IP Address
  // Route for root / web page
  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/index.html");
  });
  server.on("/temp1", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", temp1().c_str());
  });
  server.on("/temp2", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", temp2().c_str());
  });
  server.on("/temp3", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", temp3().c_str());
  });
  server.on("/temp4", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", temp4().c_str());
  });
  server.on("/temp5", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", temp5().c_str());
  });
  server.on("/TEMP", HTTP_POST, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/plain", TEMP().c_str());
  });

  // Start server
  server.begin();
    //bot.sendMessage(CHAT_ID, "EPS8266_fyr starter", "");
}
 
void loop(){
 TEMP1[x] = x;//abs(thermocouple_TEMP1.readCelsius()); 
 TEMP2[x] = x;//abs(thermocouple_TEMP2.readCelsius());
 TEMP3[x] = x;//abs(thermocouple_TEMP3.readCelsius());
 TEMP4[x] = x;//abs(thermocouple_TEMP4.readCelsius());
 TEMP5[x] = x;//abs(thermocouple_TEMP5.readCelsius());
  //Serial.print("TEMP værdier:");
  //Serial.print(x);
  //Serial.print(" TEMP1: ");
  Serial.print(TEMP1[x]);
  //Serial.print(" TEMP2: ");
  Serial.print(TEMP2[x]);
 //Serial.print(" TEMP3: ");
  Serial.print(TEMP3[x]);
  //Serial.print(" TEMP4: ");
  Serial.print(TEMP4[x]);
  //Serial.print(" TEMP5: ");
  Serial.println(TEMP5[x]);
  x += 1;
  if(TEMP1[x] >= 35){
  //bot.sendMessage(CHAT_ID, "Nedsfaldsrørs temperatur er over 35°C", "");
 }
  if(x == 120){  
    x=119;
    if(x>118) {
      for (int antal = 0; antal <= 118; antal++){
         TEMP1[antal] = TEMP1[antal+1]; 
         TEMP2[antal] = TEMP2[antal+1];
         TEMP3[antal] = TEMP3[antal+1];
         TEMP4[antal] = TEMP4[antal+1]; 
         TEMP5[antal] = TEMP5[antal+1];  
      }
  
    }
  }
  delay(1000);
}

我的代码的最后一部分是 HTML/JAVASCRIPT，它看起来像这样。

<!DOCTYPE HTML><html>
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <script src="https://code.highcharts.com/highcharts.js"></script>
  <style>
    h2 {
      font-family: Arial;
      font-size: 2.5rem;
      text-align: center;

    }
  </style>
</head>
<body>
  <h2>DASH BOARD</h2>
  <div id="chart-temperature" class="container"></div>
  <p id="demo"></p>
  <p id="demo2"></p>
</body>
<script>
var Json;
var d = new Date();
var h = d.getHours();
var c = d.getMinutes();
var chartT = new Highcharts.Chart({
  chart:{
    renderTo : 'chart-temperature',
    type: 'line',
    zoomType: 'x',
    panning: true,
    panKey: 'shift'
  },
  tooltip: {
  dateTimeLabelFormats: {
    millisecond: "%A, %b %e, %H:%M"
  }
},
  title: { text: 'temperature' },
  series: [{
    name: 'TEMP1',
    showInLegend: true,
    connectNulls: true,
    data: [],
    color: '#FF0000'
  }, {
     name: 'TEMP2',
     connectNulls: true,
    data:[],
    color: '#4572A7'
  },
  {
     name: 'TEMP3',
     connectNulls: true,
    data:[],
    color: '#000000'
  },
  {
     name: 'TEMP4',
     connectNulls: true,
    data:[],
    color: '#0000FF'
  },
  {
     name: 'TEMP5',
     connectNulls: true,
    data:[],
    color: '#6600FF'
  }],

  plotOptions: {
    line: { animation: false,
      dataLabels: { enabled: true }

    },
  },
  xAxis: { type: 'datetime',
    dateTimeLabelFormats: { second: '%H:%M:%S' },
    min: Date.UTC(0,0,0,h,c-120,0), tickInterval: 30*60*1000, max: Date.UTC(0,0,0,h,c,0)
  },
  yAxis: {
    title: { text: 'Temperature (Celsius)' },
    //title: { text: 'Temperature (Fahrenheit)' }
  },
  credits: { enabled: false }
});
Highcharts.setOptions({
    time: {
        useUTC: true
    }
});
function loadall(){
  var m;
  var tid;
  var y1;
  var y;
  var just;
    var xhttp = new XMLHttpRequest();
      xhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
      if(chartT.series[0].data.length == 0){
        y1 = this.responseText;
        y = JSON.parse(y1);
        just = y.Temp1.length;
      for (let i = 0; i < just; i++) {
         tid = Date.UTC(0,0,0,h,(c-i),0);
            chartT.series[0].addPoint([tid, y.Temp1[just-i-1]], true, false, false);
            chartT.series[1].addPoint([tid, y.Temp2[just-i-1]], true, false, false);
            chartT.series[2].addPoint([tid, y.Temp3[just-i-1]], true, false, false);
            chartT.series[3].addPoint([tid, y.Temp4[just-i-1]], true, false, false);
            chartT.series[4].addPoint([tid, y.Temp5[just-i-1]], true, false, false);
          }
           }
            }
             }
    xhttp.open("POST", "TEMP", true);
    xhttp.send();
  }
  function Load(serie,sensor,tid){
    var xhttp = new XMLHttpRequest();
      xhttp.onreadystatechange = function() {
        var y = parseFloat(this.responseText);
    if (this.readyState == 4 && this.status == 200) {
            chartT.series[serie].addPoint([tid, y], true, true, false);
          }
           }
    xhttp.open("GET", sensor, false);
    xhttp.send();
  }
  loadall();
  setInterval(function(){
    d = new Date();
    h = d.getHours();
    c = d.getMinutes();
    chartT.xAxis[0].update({
        max: Date.UTC(0,0,0,h,c,0),
        min: Date.UTC(0,0,0,h,c-120,0)
    });
    Load(0,"temp1",Date.UTC(0,0,0,h,c,0));
    Load(1,"temp2",Date.UTC(0,0,0,h,c,0));
    Load(2,"temp3",Date.UTC(0,0,0,h,c,0));
    Load(3,"temp4",Date.UTC(0,0,0,h,c,0));
    Load(4,"temp5",Date.UTC(0,0,0,h,c,0));
  }, 60000);

</script>
</html>
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1 回答 1

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我发现导致重置的问题是 esp8266 的看门狗在 6 秒后重置了它。这意味着我必须重写我的程序以将 json 数组保存在 SPIFFS 中或以较小的部分发送它。

解决方法是升级到 ESP32，因为 ESP8266 不够快

于 2021-08-10T15:12:04.953 回答