Add web firmware update

esp32_marauder/Web.cpp

@@ -0,0 +1,92 @@
+#include "Web.h"
+
+WebServer server(80);
+
+Web::Web()
+{
+  
+}
+
+void Web::main()
+{
+  //Serial.println("Running the shits");
+  // Notify if client has connected to the update server
+  int current_sta = WiFi.softAPgetStationNum();
+  
+  if (current_sta < this->num_sta)
+  {
+    this->num_sta = current_sta;
+    Serial.print("Update server: Client disconnected -> ");
+    Serial.println(this->num_sta);
+  }
+  else if (current_sta > this->num_sta)
+  {
+    this->num_sta = current_sta;
+    Serial.print("Update server: Client connected -> ");
+    Serial.println(this->num_sta);
+  }
+  
+  server.handleClient();
+  delay(1);
+}
+
+void Web::setupOTAupdate()
+{
+  Serial.println("Configuring update server...");
+  
+  // Start WiFi AP
+  WiFi.softAP(ssid, password);
+  Serial.println("");
+  
+  Serial.print("IP address: ");
+  Serial.println(WiFi.softAPIP());
+
+  /*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 serverIndex */
+  server.on("/", HTTP_GET, [this]() {
+    server.sendHeader("Connection", "close");
+    server.send(200, "text/html", loginIndex);
+  });
+  server.on("/serverIndex", HTTP_GET, [this]() {
+    server.sendHeader("Connection", "close");
+    server.send(200, "text/html", serverIndex);
+  });
+  /*handling uploading firmware file */
+  server.on("/update", HTTP_POST, [this]() {
+    server.sendHeader("Connection", "close");
+    server.send(200, "text/plain", (Update.hasError()) ? "FAIL" : "OK");
+    ESP.restart();
+  }, [this]() {
+    HTTPUpload& upload = server.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);
+      }
+    }
+  });
+  server.begin();
+
+  Serial.println("Completed update server setup");
+}