Go Down

Topic: Upload .mp3 via ftp para o arduino  (Read 256 times) previous topic - next topic

ivanlrodrigues

Sep 06, 2018, 05:13 am Last Edit: Sep 06, 2018, 05:15 am by ivanlrodrigues
Boa noite pessoal! To com problema aqui. Tenho q fazer uploads de arquivos via web para o arduino, e gravar em um sd os arquivos. Alguma ideia?

bubulindo

Que é que já fizeste?

Que é que já psquisaste?

Eu vou arriscar em dizer que isso não é uma boa ideia ou sequer muito prática. Não podes utilizar outro método?
This... is a hobby.

ivanlrodrigues

#2
Sep 11, 2018, 06:15 pm Last Edit: Sep 11, 2018, 06:17 pm by ivanlrodrigues
Estou com esse código que estou testando aos poucos. Estou usando o arduino + ethernet shield com sd card. Dentro do sd coloquei o arquivo index.htm e index2.htm. Criei um botão de upload do corpo do index e agora preciso que ele salve, também no sd, os arquivos que irei fazer upload. Não to conseguindo essa parte. Os arquivos serão mp3, e serão tocados pelo shield mp3 em horários predefinidos que já estão prontos em outro código e que não irão interferir agora no problema maior que é o upload dos arquivos.

Obs: Com esse código já consigo acessar via rede local. E é o que eu preciso. Somente em rede local.

#include <SPI.h>
#include <Ethernet.h>
#include <SD.h>

// size of buffer used to capture HTTP requests
#define REQ_BUF_SZ   20

// MAC address from Ethernet shield sticker under board
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192, 168, 1, 20); // IP address, may need to change depending on network
EthernetServer server(80);  // create a server at port 80
File webFile;
char HTTP_req[REQ_BUF_SZ] = {0}; // buffered HTTP request stored as null terminated string
char req_index = 0;              // index into HTTP_req buffer

void setup()
{
    // disable Ethernet chip
    pinMode(10, OUTPUT);
    digitalWrite(10, HIGH);
   
    Serial.begin(9600);       // for debugging
   
    // initialize SD card
    Serial.println("Initializing SD card...");
    if (!SD.begin(4)) {
        Serial.println("ERROR - SD card initialization failed!");
        return;    // init failed
    }
    Serial.println("SUCCESS - SD card initialized.");
    // check for index.htm file
    if (!SD.exists("index.htm")) {
        Serial.println("ERROR - Can't find index.htm file!");
        return;  // can't find index file
    }
    Serial.println("SUCCESS - Found index.htm file.");
   
    Ethernet.begin(mac, ip);  // initialize Ethernet device
    server.begin();           // start to listen for clients
}

void loop()
{
    EthernetClient client = server.available();  // try to get client

    if (client) {  // got client?
        boolean currentLineIsBlank = true;
        while (client.connected()) {
            if (client.available()) {   // client data available to read
                char c = client.read(); // read 1 byte (character) from client
                // buffer first part of HTTP request in HTTP_req array (string)
                // leave last element in array as 0 to null terminate string (REQ_BUF_SZ - 1)
                if (req_index < (REQ_BUF_SZ - 1)) {
                    HTTP_req[req_index] = c;          // save HTTP request character
                    req_index++;
                }
                // print HTTP request character to serial monitor
                Serial.print(c);
                // last line of client request is blank and ends with \n
                // respond to client only after last line received
                if (c == '\n' && currentLineIsBlank) {
                    // open requested web page file
                    if (StrContains(HTTP_req, "GET / ")
                                 || StrContains(HTTP_req, "GET /index.htm")) {
                        client.println("HTTP/1.1 200 OK");
                        client.println("Content-Type: text/html");
                        client.println("Connnection: close");
                        client.println();
                        webFile = SD.open("index.htm");        // open web page file
                    }
                    else if (StrContains(HTTP_req, "GET /page2.htm")) {
                        client.println("HTTP/1.1 200 OK");
                        client.println("Content-Type: text/html");
                        client.println("Connnection: close");
                        client.println();
                        webFile = SD.open("page2.htm");        // open web page file
                    }
                    else if (StrContains(HTTP_req, "GET /pic.jpg")) {
                        webFile = SD.open("pic.jpg");
                        if (webFile) {
                            client.println("HTTP/1.1 200 OK");
                            client.println();
                        }
                    }
                    if (webFile) {
                        while(webFile.available()) {
                            client.write(webFile.read()); // send web page to client
                        }
                        webFile.close();
                    }
                    // reset buffer index and all buffer elements to 0
                    req_index = 0;
                    StrClear(HTTP_req, REQ_BUF_SZ);
                    break;
                }
                // every line of text received from the client ends with \r\n
                if (c == '\n') {
                    // last character on line of received text
                    // starting new line with next character read
                    currentLineIsBlank = true;
                }
                else if (c != '\r') {
                    // a text character was received from client
                    currentLineIsBlank = false;
                }
            } // end if (client.available())
        } // end while (client.connected())
        delay(1);      // give the web browser time to receive the data
        client.stop(); // close the connection
    } // end if (client)
}

// sets every element of str to 0 (clears array)
void StrClear(char *str, char length)
{
    for (int i = 0; i < length; i++) {
        str = 0;
    }
}

// searches for the string sfind in the string str
// returns 1 if string found
// returns 0 if string not found
char StrContains(char *str, char *sfind)
{
    char found = 0;
    char index = 0;
    char len;

    len = strlen(str);
   
    if (strlen(sfind) > len) {
        return 0;
    }
    while (index < len) {
        if (str[index] == sfind[found]) {
            found++;
            if (strlen(sfind) == found) {
                return 1;
            }
        }
        else {
            found = 0;
        }
        index++;
    }

    return 0;
}

ivanlrodrigues

#3
Sep 18, 2018, 03:26 pm Last Edit: Sep 18, 2018, 03:28 pm by ivanlrodrigues
<!DOCTYPE html>
<html>
   
 <head>
       
<title>Arduino SD Card Web Page</title>
   
</head>

<body>

 
 
 
<form action="uploadForm.php" method="post" method="post" enctype="multipart/form-data">
<p>
      Por favor, selecione o arquivo:<br>
      <input name="user_file" type="file" /><br>
         <input type="submit" name="upload" value="Upload">
        <input type="hidden" name="submit_upload" value="yes" />
</p>
</form>         

       
<img src="pic.jpg" />
       
<p>Go to <a href="page2.htm">page 2</a>.</p>
    </body>
</html>





upload.php



<?php
$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
    $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
    if($check !== false) {
        echo "File mp3 - " . $check["mime"] . ".";
        $uploadOk = 1;
    } else {
        echo "File is not mp3.";
        $uploadOk = 0;
    }
}
// Check if file already exists
if (file_exists($target_file)) {
    echo "Sorry, file already exists.";
    $uploadOk = 0;
}
// Check file size
if ($_FILES["fileToUpload"]["size"] > 500000) {
    echo "Sorry, your file is too large.";
    $uploadOk = 0;
}
// Allow certain file formats
if($imageFileType != "mp3") {
    echo "Sorry, only mp3 files are allowed.";
    $uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
    echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
} else {
    if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
        echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
    } else {
        echo "Sorry, there was an error uploading your file.";
    }
}
?>










Agora preciso salvar o upload dentro do sd card do mp3 shield! Ja estou usando o sd card do ethernet shield para subir o webserver. Estou usando uma placa UNO, um ethernet shield hanrun, e um mp3 shield, todos acoplados. UNO -> ethernet > mp3 shield

Go Up