/** * AutoConnect for ESP8266. * https://github.com/Hieromon/AutoConnect * Copyright 2018, Hieromon Ikasamo. * Licensed under The MIT License. * https://opensource.org/licenses/mit-license.php * An example sketch for an Arduino library for ESP8266 WLAN configuration * via the Web interface. This sketch provides a conservation measures * utility for saved credentials in EEPROM. * By accessing the root path, you can see the list of currently saved * credentials via the browser. Enter an entry number of the credential, * that entry will be deleted from EEPROM. * This sketch uses PageBuilder to support handling of operation pages. */ #include #include #include #include #include ESP8266WebServer Server; AutoConnect Portal(Server); String viewCredential(PageArgument&); String delCredential(PageArgument&); /** * An HTML for the operation page. * In PageBuilder, the token {{SSID}} contained in an HTML template below is * replaced by the actual SSID due to the action of the token handler's * 'viewCredential' function. * The number of the entry to be deleted is passed to the function in the * POST method. */ static const char html[] PROGMEM = { "" "" "" "" "" "" "" "
" "
    " "{{SSID}}" "
" "

Enter deleting entry:

" "" "" "
" "

Menu

" "" "" }; // URL path as '/' PageElement elmList(html, {{ "SSID", viewCredential }}); PageBuilder rootPage("/", { elmList }); // URL path as '/del' PageElement elmDel("{{DEL}}", {{ "DEL", delCredential }}); PageBuilder delPage("/del", { elmDel }); // Retrieve the credential entries from EEPROM, Build the SSID line // with the
  • tag. String viewCredential(PageArgument& args) { AutoConnectCredential ac; struct station_config entry; String content = ""; uint8_t count = ac.entries(); // Get number of entries. for (int8_t i = 0; i < count; i++) { // Loads all entries. ac.load(i, &entry); // Build a SSID line of an HTML. content += String("
  • ") + String((char *)entry.ssid) + String("
    • "); } // Returns the '
  • SSID
    • ' container. return content; } // Delete a credential entry, the entry to be deleted is passed in the // request parameter 'num'. String delCredential(PageArgument& args) { AutoConnectCredential ac; if (args.hasArg("num")) { int8_t e = args.arg("num").toInt(); if (e > 0) { struct station_config entry; // If the input number is valid, delete that entry. int8_t de = ac.load(e, &entry); if (de > 0) { ac.del((char *)entry.ssid); // Returns the redirect response. The page is reloaded and its contents // are updated to the state after deletion. It returns 302 response // from inside this token handler. Server.sendHeader("Location", String("http://") + Server.client().localIP().toString() + String("/")); Server.send(302, "text/plain", ""); Server.client().flush(); Server.client().stop(); // Cancel automatic submission by PageBuilder. delPage.cancel(); } } } return ""; } void setup() { delay(1000); Serial.begin(115200); Serial.println(); rootPage.insert(Server); // Instead of Server.on("/", ...); delPage.insert(Server); // Instead of Server.on("/del", ...); if (Portal.begin()) { Serial.println("WiFi connected: " + WiFi.localIP().toString()); } } void loop() { Portal.handleClient(); }