Upload .mp3 via ftp para o arduino

International Português
1

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?

2

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?

3

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;*
    }

4
Arduino SD Card Web Page

Por favor, selecione o arquivo:

Go to page 2.

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