Guru Meditation 错误：ESP32 上的 Core 1 Panic'ed (Load Prohibited)答案

【问题标题】：Guru Meditation Error: Core 1 Panic'ed (Load Prohibited) on ESP32Guru Meditation 错误：ESP32 上的 Core 1 Panic'ed (Load Prohibited)
【发布时间】：2021-10-09 21:40:48
【问题描述】：

所以我试图创建一个网络服务器，用 ESP32 点亮多个 LED。当一个按钮被按下时，服务器会发送一个 GET 请求。以前，HTML 页面上只有一个 LED 和一个按钮。这段代码就是这样，只是有更多的按钮和变量。但是，当我将它上传到 ESP32 并打开串行窗口时，我得到了这个：

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 模式：DIO，时钟 div：1 负载：0x3fff0018，长度：4 负载：0x3fff001c，长度：1216 ho 0 尾 12 房间 4 加载：0x40078000，长度：10944 加载：0x40080400，长度：6388 条目 0x400806b4 大师冥想错误：核心 1 恐慌（负载禁止）。异常未处理。核心 1 寄存器转储： PC : 0x40081041 PS : 0x00060330 A0 : 0x800d1222 A1 : 0x3ffb1f40
A2：0x00000004 A3：0x00000002 A4：0x0800001c A5：0x00000003
A6：0x00000003 A7：0x00000000 A8：0x3f401e08 A9：0xffffffff
A10：0xff4e0000 A11：0x00000048 A12：0x08000000 A13：0x00000003
A14：0xffffffff A15：0x00000000 SAR：0x0000001a 异常：0x0000001c
EXCVADDR：0xff4e0000 LBEG：0x00000000 LEND：0x00000000 LCOUNT：0x00000000
ELF 文件 SHA256：0000000000000000 回溯：0x40081041:0x3ffb1f40 0x400d121f:0x3ffb1f60 0x400dc8f6:0x3ffb1fb0 0x40089a52:0x3ffb1fd0 正在重新启动...

我不知道这意味着什么或我做错了什么。我试过了：

1 - 最小化变量（在变量的前缀中添加无符号、常量等）

2 - 将变量放入本地函数的作用域

有人可以帮忙吗？如果您这样做，将不胜感激。（我对 Arduino 编程完全陌生，所以我不知道该怎么做）。代码如下：

#include <WiFi.h>
#include <AsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <ArduinoOTA.h>

// Replace with your network credentials
const char* ssid = "SSID_HERE";
const char* password = "PASSWORD_HERE";


const unsigned int outputfw = 2;
const unsigned int outputlt = 4;
const unsigned int outputrt = 7;
const unsigned int outputbw = 6;

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

const char index_html[] PROGMEM = R"rawliteral(
<!DOCTYPE HTML><html>
<head>
  <title>ESP Web Server</title>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <style>
    html {font-family: Arial; display: inline-block; text-align: center;}
    h2 {font-size: 3.0rem;}
    p {font-size: 3.0rem;}
    body {max-width: 600px; margin:0px auto; padding-bottom: 25px;}
    .switch {position: relative; display: inline-block; width: 120px; height: 68px} 
    .switch input {display: none}
    .slider {position: absolute; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; border-radius: 34px}
    .slider:before {position: absolute; content: ""; height: 52px; width: 52px; left: 8px; bottom: 8px; background-color: #fff; -webkit-transition: .4s; transition: .4s; border-radius: 68px}
    input:checked+.slider {background-color: #2196F3}
    input:checked+.slider:before {-webkit-transform: translateX(52px); -ms-transform: translateX(52px); transform: translateX(52px)}
  </style>
</head>
<body>
  <h2>ESP Web Server</h2>
  %BUTTONPLACEHOLDER%
<script>function toggleCheckbox(state, dir) {
  console.log("Mouse is ")
  console.log(state)
  var xhr = new XMLHttpRequest();
  if(state){ xhr.open("GET", "/update?" + dir + "=" + state, true); }
  else { xhr.open("GET", "/update?" + dir + "=" + state, true); }
  xhr.send();
}

document.getElementById("fw").addEventListener("mousedown", function(event) {
    toggleCheckbox(true, "fw");
    console.log("mouse down.f");
}, false);
document.getElementById("fw").addEventListener("mouseup", function(event) {
    toggleCheckbox(false, "fw");
    console.log("mouse up.f")
}, false);
document.getElementById("bw").addEventListener("mousedown", function(event) {
    toggleCheckbox(true, "bw");
    console.log("mouse down.b");
}, false);
document.getElementById("bw").addEventListener("mouseup", function(event) {
    toggleCheckbox(false, "bw");
    console.log("mouse up.b")
}, false);
document.getElementById("lt").addEventListener("mousedown", function(event) {
    toggleCheckbox(true, "lt");
    console.log("mouse down.l");
}, false);
document.getElementById("lt").addEventListener("mouseup", function(event) {
    toggleCheckbox(false, "lt");
    console.log("mouse up.l")
}, false);
document.getElementById("rt").addEventListener("mousedown", function(event) {
    toggleCheckbox(true, "rt");
    console.log("mouse down.r");
}, false);
document.getElementById("rt").addEventListener("mouseup", function(event) {
    toggleCheckbox(false, "rt");
    console.log("mouse up.r")
}, false);

</script>
</body>
</html>
)rawliteral";

// Replaces placeholder with button section in your web page
String processor(const String& var){
  //Serial.println(var);
  if(var == "BUTTONPLACEHOLDER"){
    String buttons;
    String outputStateValue = outputState();
    //buttons+= "<h4>Output - GPIO 2 - State <span id=\"outputState\"></span></h4><label class=\"switch\"><input type=\"checkbox\" onchange=\"toggleCheckbox(this)\" id=\"output\" " + outputStateValue + "><span class=\"slider\"></span></label>";
    buttons = "<h4>output button gpio5 - <span id=\"outputState\"></span></h4><button id=\"fw\">forward</button><br><button id=\"lt\">left</button><button id=\"bw\">backward</button><button id=\"rt\">right</button>";
    return buttons;
  }
  return String();
}

String outputState(){
  if(digitalRead(outputfw)){
    return "checked";
  }
  else {
    return "";
  }
  return "";
}

void setup(){
  // Serial port for debugging purposes
  Serial.begin(115200);
  
  pinMode(outputfw, OUTPUT);
  pinMode(outputbw, OUTPUT);
  pinMode(outputlt, OUTPUT);
  pinMode(outputrt, OUTPUT);
  digitalWrite(outputfw, LOW);
  digitalWrite(outputbw, LOW);
  digitalWrite(outputlt, LOW);
  digitalWrite(outputrt, LOW);
//  pinMode(buttonPin, INPUT);
  
  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi..");
  }

  // Print ESP Local IP Address
  Serial.println(WiFi.localIP());
  ArduinoOTA.begin();

  // Route for root / web page
  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/html", index_html, processor);
  });

  // Send a GET request to <ESP_IP>/update?<direction>=<inputMessage>
  server.on("/update", HTTP_GET, [] (AsyncWebServerRequest *request) {
    int ledState1 = LOW;          // the current state of the output pin
  int ledState2 = LOW;
  int ledState3 = LOW;
  int ledState4 = LOW;
    String inputMessage;
    String inputParam;
    const char PARAM_INPUT_1[] = "fw";
const char PARAM_INPUT_2[] = "bw";
const char PARAM_INPUT_3[] = "lt";
const char PARAM_INPUT_4[] = "rt";

    // GET input1 value on <ESP_IP>/update?state=<inputMessage>
    if (request->hasParam(PARAM_INPUT_1)) {
      inputMessage = request->getParam(PARAM_INPUT_1)->value();
      inputParam = PARAM_INPUT_1;
      digitalWrite(outputfw, inputMessage.toInt());
      ledState1 = !ledState1;
    }
    else if (request->hasParam(PARAM_INPUT_2)) {
      inputMessage = request->getParam(PARAM_INPUT_2)->value();
      inputParam = PARAM_INPUT_2;
      digitalWrite(outputbw, inputMessage.toInt());
      ledState2 = !ledState2;
    }
    else if (request->hasParam(PARAM_INPUT_3)) {
      inputMessage = request->getParam(PARAM_INPUT_3)->value();
      inputParam = PARAM_INPUT_3;
      digitalWrite(outputlt, inputMessage.toInt());
      ledState3 = !ledState3;
    }
    if (request->hasParam(PARAM_INPUT_4)) {
      inputMessage = request->getParam(PARAM_INPUT_4)->value();
      inputParam = PARAM_INPUT_4;
      digitalWrite(outputrt, inputMessage.toInt());
      ledState4 = !ledState4;
    }
    else {
      inputMessage = "No message sent";
      inputParam = "none";
    }
    Serial.println(inputMessage);
    request->send(200, "text/plain", "OK");
  });

  // Send a GET request to <ESP_IP>/state
  server.on("/state", HTTP_GET, [] (AsyncWebServerRequest *request) {
    request->send(200, "text/plain", String(digitalRead(outputfw)).c_str());
  });
  // Start server
  server.begin();
}
  
void loop() {
  ArduinoOTA.handle();
  delay(2);}

【问题讨论】：

标签： html c++ error-handling arduino esp32

【解决方案1】：

您正在使用连接到 ESP32 闪存芯片的 GPIO 引脚。当您使用 pinMode() 重新编程时，您会干扰 ESP32 读取和写入闪存的能力并且它会崩溃。

const unsigned int outputfw = 2;
const unsigned int outputlt = 4;
const unsigned int outputrt = 7;
const unsigned int outputbw = 6;

引脚 6 和 7 连接到 SPI 闪存芯片。在应用程序中使用它们通常不安全。它们通常也不会在 ESP32 分线板上表达出来。

尝试使用安全引脚（例如 13 和 14 而不是 6 和 7）重建固件，您会发现它不会像以前那样崩溃。

也许您将分线板的引脚编号与 GPIO 引脚编号混淆了？您需要参考您正在使用的电路板的引脚排列来找到正确的 GPIO 引脚。 ESP32 Arduino 代码将引用 GPIO 引脚号，而不是分线板引脚号。

关于如何使用 ESP32 GPIO 引脚以及哪些是安全的，有一个非常有用的参考here。

【讨论】：