- Tue Jul 30, 2019 3:58 am
#83271
I want to upload a file or image in my server (for testing, i use free hosting server 000webhost). The file or image is in SD Card. Then in the hardware, i have ESP8266 NodeMCU and SD Card module to read the files and send it to server using WiFi Internet.
I have tried using POSTMAN and it works perfectly (so i think, there is no problem with PHP code). But when i try to upload files with ESP8266 NodeMCU and SD Card module, it is not working. The files is not uploaded, but there is not error.
This is my PHP code:
and This is my ESP8266 NodeMCU code:
And the result from my serial monitor is:
Thanks
I have tried using POSTMAN and it works perfectly (so i think, there is no problem with PHP code). But when i try to upload files with ESP8266 NodeMCU and SD Card module, it is not working. The files is not uploaded, but there is not error.
This is my PHP code:
Code: Select all
<?PHP
if(!empty($_FILES['data']))
{
echo "uploading..";
$path = "data/";
$path = $path . basename( $_FILES['data']['name']);
if(move_uploaded_file($_FILES['data']['tmp_name'], $path)) {
echo "The file ". basename( $_FILES['data']['name']).
" has been uploaded";
} else{
echo "There was an error uploading the file, please try again!";
}
}
exit;
?>
and This is my ESP8266 NodeMCU code:
Code: Select all
#include <ESP8266WiFi.h>
#include <SPI.h>
#include <SD.h>
File myFile;
const char* ssid = "zzz";
const char* password = "xxx";
String host = "xxxx.000webhostapp.com";
void setup() {
Serial.begin(115200);
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
Serial.print("Initializing SD card...");
if (!SD.begin(4)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
Serial.print("connecting to ");
Serial.println(host);
// Use WiFiClient class to create TCP connections
WiFiClient client;
const int httpPort = 80;
if (!client.connect(host, httpPort)) {
Serial.println("connection failed");
return;
}
File myFile = SD.open("test.txt");
if (myFile) {
Serial.println("test file:ok");
} else {
// if the file didn't open, print an error:
Serial.println("error opening test.txt");
}
int filesize = myFile.size();
Serial.print("filesize=");
Serial.println(filesize);
String fileName = myFile.name();
String fileSize = String(myFile.size());
Serial.println("reading file");
String url = "/upload.php";
String boundary = "WebKitFormBoundary7MA4YWxkTrZu0gW";
String contentType = "text/plain";
// post header
String postHeader = "POST " + url + " HTTP/1.1\r\n";
postHeader += "Host: " + host + " \r\n";
postHeader += "Content-Type: multipart/form-data; boundary=----" + boundary + "\r\n";
String keyHeader = "------" + boundary + "\r\n";
keyHeader += "Content-Disposition: form-data; name=\"data\"\r\n\r\n";
String requestHead = "------" + boundary + "\r\n";
requestHead += "Content-Disposition: form-data; name=\"data\"; filename=\"" + fileName + "\"\r\n";
requestHead += "Content-Type: " + contentType + "\r\n\r\n";
// post tail
String tail = "\r\n------" + boundary + "--\r\n\r\n";
// content length
int contentLength = keyHeader.length() + requestHead.length() + myFile.size() + tail.length();
postHeader += "Content-Length: " + String(contentLength, DEC) + "\n\n";
// send post header
char charBuf0[postHeader.length() + 1];
postHeader.toCharArray(charBuf0, postHeader.length() + 1);
client.write(charBuf0);
Serial.print("send post header=");
Serial.println(charBuf0);
// send key header
char charBufKey[keyHeader.length() + 1];
keyHeader.toCharArray(charBufKey, keyHeader.length() + 1);
client.write(charBufKey);
Serial.print("send key header=");
Serial.println(charBufKey);
// send request buffer
char charBuf1[requestHead.length() + 1];
requestHead.toCharArray(charBuf1, requestHead.length() + 1);
client.write(charBuf1);
Serial.print("send request buffer=");
Serial.println(charBuf1);
// create buffer
const int bufSize = 2048;
byte clientBuf[bufSize];
int clientCount = 0;
// read myFile until there's nothing else in it:
while (myFile.available())
{
clientBuf[clientCount] = myFile.read();
clientCount++;
if (clientCount > (bufSize - 1))
{
client.write((const uint8_t *)clientBuf, bufSize);
clientCount = 0;
}
}
if (clientCount > 0)
{
client.write((const uint8_t *)clientBuf, clientCount);
Serial.println("Sent LAST buffer");
}
// send tail
char charBuf3[tail.length() + 1];
tail.toCharArray(charBuf3, tail.length() + 1);
client.write(charBuf3);
Serial.print(charBuf3);
Serial.println("end_request");
String lastline;
while (client.connected())
{
while (client.available())
{
String line = client.readStringUntil('\r');
lastline = line;
Serial.print(line);
if (line.indexOf("{") > 0)
{
client.stop();
}
}
}
Serial.println(lastline);
myFile.close();
Serial.println("closing connection");
}
void loop(){
}
And the result from my serial monitor is:
Code: Select all
WiFi connected
IP address:
192.168.43.169
Initializing SD card...initialization done.
connecting to serveriot.000webhostapp.com
test file:ok
filesize=144
reading file
send post header=POST /upload.php HTTP/1.1
Host: serveriot.000webhostapp.com
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Length: 386
send key header=------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="data"
send request buffer=------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="data"; filename="test.txt"
Sent LAST buffer
------WebKitFormBoundary7MA4YWxkTrZu0gW--
end_request
HTTP/1.1 200 OK
Date: Tue, 30 Jul 2019 01:32:19 GMT
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Server: awex
X-Xss-Protection: 1; mode=block
X-Content-Type-Options: nosniff
X-Request-ID: 5d9decf0575d7243f6fce1135504e3db
1
0
closing connection
Thanks
