File 从SD_MMC转换为SD库

我正在尝试将此代码从ESP32AIThinker Cam转换为在带护罩的Wemos D1R1上运行。
最大的问题是从SD_MMC.h到SD.h的变化。一些文件命令也是一个谜。这段代码的第一行我完全搞不懂：

`  fs::FS &fs = SD_MMC;
  String path = server.uri(); //saves the to a string server uri ex.(192.168.100.110/edit server uri is "/edit")
  Serial.print("path ");  Serial.println(path);

  //To send the index.html when the serves uri is "/"
  if (path.endsWith("/")) {
    path += "index.html";
`

这一个有更多的文件访问代码：

    ```File file = fs.open(path, "r"); //Open the File with file name = to path with intention to read it. For other modes see <a href="https://arduino-esp8266.readthedocs.io/en/latest/filesystem.html" style="font-size: 13.5px;"> https://arduino-esp8266.readthedocs.io/en/latest/...</a>
  size_t sent = server.streamFile(file, contentType); //sends the file to the server references from <a href="https://github.com/espressif/arduino-esp32/blob/master/libraries/WebServer/src/WebServer.h" style="font-size: 13.5px;"> https://arduino-esp8266.readthedocs.io/en/latest/...</a>

``File File=fs.open（路径“r”）//打开文件名为to path的文件，并打算读取它。有关其他模式，请参见
发送的大小=server.streamFile（文件，contentType）//将文件从发送到服务器引用

拒绝了我所有的改变他们信仰的尝试。
以下是完整代码，它在ESP32 Cam板上工作：
```//从中加载必要的库https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFi/src/WiFi.h
//https://www.instructables.com/How-to-Serve-Html-Files-From-SD-Card-on-ESP32/
#包括//添加Wifi功能
#include//创建一个只容纳一个同时客户端的简单Web服务器
#包括“FS.h”//以访问文件系统
#包括“SD_MMC.h”//以访问SD卡
//替换为您的网络凭据
#ifndef STASSID
#定义STASSID“用您的ssid替换”
定义STAPSK“用您的ssid替换”

#恩迪夫
常量字符*ssid=STASSID；
const char*password=STAPSK；
网络服务器（80）//将服务器设置为端口80
无效设置（）{
Serial.begin（115200）；//设置与ESP串行通信的波特率
/////////////////SD卡
如果（！SD_MMC.begin（））{//初始化SD卡
Serial.println（“SD卡安装失败”）；
返回；
}
uint8_t cardType=SD_MMC.cardType（）；//获取SD卡类型
如果（cardType==CARD_NONE）{//检查sd卡是否存在
Serial.println（“未附SD卡”）；
返回；
}
////////////////无线网络
WiFi.mode（WiFi_STA）；//将其连接到WiFi网络
WiFi.begin（ssid，密码）；//使用前面定义的ssid和密码
Serial.println（“”）；
while（WiFi.status（）！=WL_已连接）{//等待连接
延迟（500）；
连续打印（“.”）；
}
Serial.println（“”）；
串行打印（“连接到”）；
序列号println（ssid）；
串行打印（“IP地址：”）；
Serial.println（WiFi.localIP（））；//打印路由器提供给esp的本地ip
////////////////服务器
server.onNotFound（handleRoot）；//调用函数handleRoot，而不考虑服务器uri ex（192.168.100.110/edit服务器uri为“/edit”）
server.begin（）；//启动服务器
Serial.println（“HTTP服务器已启动”）；
}
void handleRoot（）{
/*SDU MMC属于SD卡“内存”。它另存为
与fs库中给定给fs的地址相同的变量
使用“FS”类使文件系统包装器
sd卡内存上的更改*/
fs:：fs&fs=SD\u MMC；
String path=server.uri（）；//将保存到字符串服务器uri ex（192.168.100.110/edit服务器uri为“/edit”）
Serial.print（“路径”）；Serial.println（路径）；
//当服务uri为“/”时发送index.html
if（路径endsWith（“/”）{
path+=“index.html”；
}
//获取扩展名及其对应的内容类型
字符串contentType=getContentType（路径）；
串行打印（“内容类型”）；
Serial.println（contentType）；
File File=fs.open（path，“r”）；//打开文件名为to path的文件，以便读取。有关其他模式，请参阅
size_t sent=server.streamFile（file，contentType）；//将文件从发送到服务器引用
file.close（）；//关闭文件
}
//此函数返回内容类型的字符串
字符串getContentType（字符串文件名）{
if（server.hasArg（“download”）{//检查参数“download”是否存在
返回“应用程序/八位字节流”；
}else if（filename.endsWith（“.htm”）{//检查字符串文件名是否以“.htm”结尾
返回“text/html”；
}else if（filename.endsWith（“.html”））{
返回“text/html”；
}else if（filename.endsWith（“.css”））{
返回“text/css”；
}else if（filename.endsWith（“.js”））{
返回“application/javascript”；
}else if（filename.endsWith（“.png”））{
返回“image/png”；
}else if（filename.endsWith（“.gif”））{
返回“image/gif”；
}else if（filename.endsWith（“.jpg”））{
返回“图像/jpeg”；
}else if（filename.endsWith（“.ico”））{
返回“图像/x图标”；
}else if（filename.endsWith（“.xml”））{
返回“text/xml”；
}else if（filename.endsWith（“.pdf”））{
返回“应用程序/x-pdf”；
}else if（filename.endsWith（“.zip”））{
返回“应用程序/x-zip”；
}else if（filename.endsWith（“.gz”））{
返回“application/x-gzip”；
}
返回“文本/纯文本”；
}
void循环（）{
/*等待服务器上的连接并负责
从客户端发送和接收服务器uri上的数据请求*/
server.handleClient（）；
}
/*将此html代码包含在SD卡上名为“index.html”的文件中！！！
*图像标签。
*将所有源标记更改为与路径相似。
* 
* 
温室
.中心{
保证金：自动；
文本对齐：居中；
}
.左{
浮动：左；
}
.对{
浮动：对；
}
.卡片{
边框样式：实心；
边框宽度：1px；
边框颜色：#F7DC6F；
填充物：5px；
保证金：2

Have resisted all my attempts to convert them.

The following is the full code and it works on a ESP32 Cam board:


        ```//Load necessaries libraries from https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFi/src/WiFi.h
    //https://www.instructables.com/How-to-Serve-Html-Files-From-SD-Card-on-ESP32/
    #include <WiFi.h>             // Add Wifi Capabilities
    #include <WebServer.h>        //To make a simple webserver that accomodates only one simultaneous client
    
    #include "FS.h"              //To access the file system 
    #include "SD_MMC.h"          //To access the SD Card
    
    //replace with your network credentials
    #ifndef STASSID
    #define STASSID "replace_with_your_ssid"<br>#define STAPSK  "replace_with_your_ssid_pass"<br>
    #endif
    
    const char* ssid = STASSID;
    const char* password = STAPSK;
    
    WebServer server(80); //Set the server at port 80
    
    void setup() {
      Serial.begin(115200); //Set the baud rate for serial communication with ESP
    
      /////////////////sdcard
      if (!SD_MMC.begin()) { //initialize SD Card
        Serial.println("SD Card Mount Failed");
        return;
      }
      uint8_t cardType = SD_MMC.cardType();  //get sd card type
      if (cardType == CARD_NONE) { //check if the sd card presence
        Serial.println("No SD Card attached");
        return;
      }
    
      ////////////////Wifi
      WiFi.mode(WIFI_STA); //Connect it to a wifi Network
      WiFi.begin(ssid, password); //with the ssid and password defined earlier
      Serial.println("");
    
      while (WiFi.status() != WL_CONNECTED) {// Wait for connection
        delay(500);
        Serial.print(".");
      }
      Serial.println("");
      Serial.print("Connected to ");
      Serial.println(ssid);
      Serial.print("IP address: ");
      Serial.println(WiFi.localIP()); //prints the local ip given to the esp by the router
    
      ////////////////Server
      server.onNotFound(handleRoot); //Calls the function handleRoot regardless of the server uri ex.(192.168.100.110/edit server uri is "/edit")
      server.begin();//starts the server
      Serial.println("HTTP server started");
    }
    
    void handleRoot() {
      /* SD_MMC pertains to the sd card "memory". It is save as a
        variable at the same address given to fs in the fs library
        with "FS" class to enable the file system wrapper to make
        changes on the sd cards memory */
      fs::FS &fs = SD_MMC;
      String path = server.uri(); //saves the to a string server uri ex.(192.168.100.110/edit server uri is "/edit")
      Serial.print("path ");  Serial.println(path);
    
      //To send the index.html when the serves uri is "/"
      if (path.endsWith("/")) {
        path += "index.html";
      }
    
      //gets the extension name and its corresponding content type
      String contentType = getContentType(path);
      Serial.print("contentType ");
      Serial.println(contentType);
      File file = fs.open(path, "r"); //Open the File with file name = to path with intention to read it. For other modes see <a href="https://arduino-esp8266.readthedocs.io/en/latest/filesystem.html" style="font-size: 13.5px;"> https://arduino-esp8266.readthedocs.io/en/latest/...</a>
      size_t sent = server.streamFile(file, contentType); //sends the file to the server references from <a href="https://github.com/espressif/arduino-esp32/blob/master/libraries/WebServer/src/WebServer.h" style="font-size: 13.5px;"> https://arduino-esp8266.readthedocs.io/en/latest/...</a>
      file.close(); //Close the file
    }
    
    //This functions returns a String of content type
    String getContentType(String filename) {
      if (server.hasArg("download")) { // check if the parameter "download" exists
        return "application/octet-stream";
      } else if (filename.endsWith(".htm")) { //check if the string filename ends with ".htm"
        return "text/html";
      } else if (filename.endsWith(".html")) {
        return "text/html";
      } else if (filename.endsWith(".css")) {
        return "text/css";
      } else if (filename.endsWith(".js")) {
        return "application/javascript";
      } else if (filename.endsWith(".png")) {
        return "image/png";
      } else if (filename.endsWith(".gif")) {
        return "image/gif";
      } else if (filename.endsWith(".jpg")) {
        return "image/jpeg";
      } else if (filename.endsWith(".ico")) {
        return "image/x-icon";
      } else if (filename.endsWith(".xml")) {
        return "text/xml";
      } else if (filename.endsWith(".pdf")) {
        return "application/x-pdf";
      } else if (filename.endsWith(".zip")) {
        return "application/x-zip";
      } else if (filename.endsWith(".gz")) {
        return "application/x-gzip";
      }
      return "text/plain";
    }
    
    void loop() {
      /*Waits For connection on the server and is responsible for
        sending and receivingdata request on server uri from the client*/
      server.handleClient();
    }
    
    
    
    /*INCLUDE THIS html code IN A FILE NAMED "index.html" ON THE SD CARD!!!
     * The image tag <img> source (src) should be "/" + path. 
     * For example, to show the image named "plants.jpg": 
     * <img class="picture" style="max-width:100%;" src="/plants.jpg">. 
     * Change all source tags to be similar to your path.
     * 
     * 
    <!DOCTYPE html>
    <head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <title>Greenhouse</title>
        <meta name="description" content="Greenhouse">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <style>
            .center {
                margin: auto;
                text-align: center;
            }
    
            .left {
                float: left;
            }
    
            .right {
                float: right;
            }
    
            .card {
                border-style: solid;
                border-width: 1px;
                border-color: #F7DC6F;
                padding: 5px;
                margin: 20px;
            }
    
            .container {
                position: relative;
            }
    
            .top-left {
                position: absolute;
                top: 8px;
                left: 16px;
                text-align: left;
            }
    
            .hide {
                position: absolute;
                opacity: 0;
            }
    
            input[type=checkbox]+label {
                color: rgb(129, 129, 129);
                font-style: italic;
                padding: 5px;
            }
    
            input[type=checkbox]:checked+label {
                color: #000000;
                font-style: normal;
                padding: 5px;
            }
        </style>
    </head>
    
    <body class="center" onload="onload()" style="font-family: Verdana, Geneva, Tahoma, sans-serif;">
        <h1 class="center">Pulilan Greenhouse</h1>
        <div class=card style="border-color: #ffffff;">
            <img class="picture" id="slideshow" src="/picture/1.jpg" style="max-width:100%;">
            <p> </p>
            <button class="left" id="prev">❮ Prev</button>
            <button class="right" id="next">❯ Next</button>
            <button href="/picture/1.jpg" download id="download">Download</button>
            <button id="take_photo">Take Photo</button>
        </div>
        <div class=card>
            <div style="background-color:#F7DC6F;">
                STATUS
            </div>
            <div class="container">
                <img class="picture" style="max-width:100%;" src="/plants.jpg">
                <div class="top-left">
                    <p id="temp"> Temp: 0 ℃ </p>
                    <p id="RH"> RH: 0 % </p>
                </div>
            </div>
        </div>
    
        <div class=card>
            <div style="background-color:#F7DC6F;">
                CONTROL
            </div>
            <table style="width: 100%;">
                <tbody>
                    <tr>
                        <td>
                            <input class="hide" type="checkbox" onchange="relay(this.id)" id="1">
                            <label for="1">Relay 1</label>
                        </td>
                        <td>
                            <input class="hide" type="checkbox" onchange="relay(this.id)" id="2">
                            <label for="2">Relay 2</label>
                        </td>
                        <td>
                            <input class="hide" type="checkbox" onchange="relay(this.id)" id="3">
                            <label for="3">Relay 3</label>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <input class="hide" type="checkbox" onchange="relay(this.id)" id="4">
                            <label for="4">Relay 4</label>
                        </td>
                        <td>
                            <input class="hide" type="checkbox" onchange="relay(this.id)" id="5">
                            <label for="5">Relay 5</label>
                        </td>
                        <td>
                            <input class="hide" type="checkbox" onchange="relay(this.id)" id="6">
                            <label for="6">Relay 6</label>
                        </td>
                    </tr>
                </tbody>
            </table>
        </div>
    
        <div class=card>
            <div style="background-color:#F7DC6F;text-align: center;">
                SCHEDULE
            </div>
            <div class="container" style="text-align: left;">
                Time: <input type="time"><br>
                Duration: <input type="number" style=" width:50px;"> mins <br>
                Days: <span class="days">
                    <input class="hide" onchange="day_selection(this.id)" id="sun" name="sun" type="checkbox" value="0">
                    <label for="sun">S</label>
                    <input class="hide" onchange="day_selection(this.id)" id="mon" type="checkbox" value="0">
                    <label for="mon">M</label>
                    <input class="hide" onchange="day_selection(this.id)" id="tue" type="checkbox" value="0">
                    <label for="tue">T</label>
                    <input class="hide" onchange="day_selection(this.id)" id="wed" type="checkbox" value="0">
                    <label for="wed">W</label>
                    <input class="hide" onchange="day_selection(this.id)" id="thur" type="checkbox" value="0">
                    <label for="thur">T</label>
                    <input class="hide" onchange="day_selection(this.id)" id="fri" type="checkbox" value="0">
                    <label for="fri">F</label>
                    <input class="hide" onchange="day_selection(this.id)" id="sat" type="checkbox" value="0">
                    <label for="sat">S</label>
                </span>
            </div>
        </div>
    
    
        <script>
        
            function onload() {
                console.log("loaded");}
    
            var picture = 1;
            var next = document.getElementById("next");
            next.addEventListener("click", function () {
                picture += 1;
                console.log("picture", picture);
                document.getElementById("slideshow").src = "/picture/" + picture + ".jpg";
            });
    
            var download = document.getElementById("download");
            download.addEventListener("click", function () {
                console.log("downlaod", document.getElementById("slideshow").src);
                window.open(document.getElementById("slideshow").src)
            });
    
            var prev = document.getElementById("prev");
            prev.addEventListener("click", function () {
                picture -= 1;
                console.log("picture", picture);
                document.getElementById("slideshow").src = "/picture/" + picture + ".jpg";;
            });
    
            var take_photo = document.getElementById("take_photo");
            take_photo.addEventListener("click",function(){
            });
    
            function relay(id) {
                console.log(id, document.getElementById(id).checked);
            }
            function day_selection(id) {
                console.log("id", id, document.getElementById(id).value);
            }
        </script>
    </body>
    </html>
    */
    ```