I am currently searching for a way, to perform an OTA update with my ESP32. I can do that when I connect to a local WiFi. But the project does not always have an existing WiFi network so I would like to have the option to create an WiFi network where I can connect too and upload the new Firmware.
The router mode works with out problem. But when I try to use the Acesspoint mode I only get the webside but as soon i try to upload it does not work and only redirection me to http://ipaddress/#
With the text: Not found: /
Did i miss some configuration on the server or does it have trouble with the filesystem?
Any help is appreciated
This is my code which I use:
main.cpp
#include "Utils/OTAWeb.h"
// For connection with router
// OTAWeb otaweb("SSD","Password",false);
OTAWeb otaweb("CreatedWIFI", "1234567890", true);
void setup()
{
otaweb.setup();
}
void loop()
{
otaweb.loop();
}
OTAWeb.h:
#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
#include <ESPmDNS.h>
#include <Update.h>
#include <ArduinoOTA.h>
#pragma once
class OTAWeb
{
public:
// Create network does not work at the moment
OTAWeb(const char *ssid, const char *password, bool createNetwork);
~OTAWeb();
void start();
void stop();
void setup();
void loop();
private:
const char *host = "esp32";
const char *ssid;
const char *password;
WebServer *webserver;
WiFiServer *wifiserver;
bool createNetwork;
// Stores request of WiFi Server
String header;
};
OTAWeb.cpp:
#include "OTAWeb.h"
const char *webserverIndex =
"<script src='https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js'></script>"
"<form method='POST' action='#' enctype='multipart/form-data' id='upload_form'>"
"<input type='file' name='update'>"
"<input type='submit' value='Update'>"
"</form>"
"<div id='prg'>Fortschritt: 0%</div>"
"<script>"
"$('form').submit(function(e){"
"e.preventDefault();"
"var form = $('#upload_form')[0];"
"var data = new FormData(form);"
" $.ajax({"
"url: '/update',"
"type: 'POST',"
"data: data,"
"contentType: false,"
"processData:false,"
"xhr: function() {"
"var xhr = new window.XMLHttpRequest();"
"xhr.upload.addEventListener('progress', function(evt) {"
"if (evt.lengthComputable) {"
"var per = evt.loaded / evt.total;"
"$('#prg').html('progress: ' + Math.round(per*100) + '%');"
"}"
"}, false);"
"return xhr;"
"},"
"success:function(d, s) {"
"console.log('success!')"
"},"
"error: function (a, b, c) {"
"}"
"});"
"});"
"</script>";
OTAWeb::OTAWeb(const char *ssid, const char *password, bool createNetwork)
{
this->ssid = ssid;
this->password = password;
this->createNetwork = createNetwork;
this->webserver = new WebServer(80);
}
OTAWeb::~OTAWeb()
{
delete webserver;
}
void OTAWeb::stop()
{
webserver->stop();
}
void OTAWeb::start()
{
setup();
}
void OTAWeb::setup()
{
Serial.begin(115200);
if (createNetwork)
{
Serial.println("Booting");
WiFi.mode(WIFI_AP);
// IPAddress apIP(192, 168, 4, 1);
// WiFi.softAPConfig(apIP, apIP, IPAddress(255, 255, 255, 0));
WiFi.softAP(ssid, password);
Serial.print("IP address: ");
Serial.println(WiFi.softAPIP());
}
else
{
// Connect to WiFi network
WiFi.begin(ssid, password);
Serial.println("");
// Wait for connection
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
}
/*use mdns for host name resolution*/
if (!MDNS.begin(host))
{ //http://esp32.local
Serial.println("Error setting up MDNS responder!");
while (1)
{
delay(1000);
}
}
Serial.println("mDNS responder started");
/*return index page which is stored in webserverIndex */
webserver->on("/", HTTP_GET, [this]()
{
webserver->sendHeader("Connection", "close");
webserver->send(200, "text/html", webserverIndex);
});
/*handling uploading firmware file */
webserver->on(
"/update", HTTP_POST, [this]()
{
webserver->sendHeader("Connection", "close");
webserver->send(200, "text/plain", (Update.hasError()) ? "FAIL" : "OK");
ESP.restart();
},
[this]()
{
HTTPUpload &upload = webserver->upload();
if (upload.status == UPLOAD_FILE_START)
{
Serial.printf("Update: %s\n", upload.filename.c_str());
if (!Update.begin(UPDATE_SIZE_UNKNOWN))
{ //start with max available size
Update.printError(Serial);
}
}
else if (upload.status == UPLOAD_FILE_WRITE)
{
/* flashing firmware to ESP*/
if (Update.write(upload.buf, upload.currentSize) != upload.currentSize)
{
Update.printError(Serial);
}
}
else if (upload.status == UPLOAD_FILE_END)
{
if (Update.end(true))
{ //true to set the size to the current progress
Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
}
else
{
Update.printError(Serial);
}
}
});
webserver->begin();
}
void OTAWeb::loop()
{
webserver->handleClient();
delay(1);
}