ESP WiFi

/* PersWiFiManager version 3.0.1 https://r-downing.github.io/PersWiFiManager/ */ #include "PersWiFiManager.h" #if defined(ESP32) #include #endif #ifdef WIFI_HTM_PROGMEM const char wifi_htm[] PROGMEM = R"=====( ESP WiFi

Back |Home

)====="; #endif #if defined(ESP8266) PersWiFiManager::PersWiFiManager(ESP8266WebServer& s, DNSServer& d) { #elif defined(ESP32) PersWiFiManager::PersWiFiManager(WebServer& s, DNSServer& d) { #endif _server = &s; _dnsServer = &d; _apPass = ""; _freshConnectionAttempt = false; } //PersWiFiManager bool PersWiFiManager::attemptConnection(const String& ssid, const String& pass) { //attempt to connect to wifi WiFi.mode(WIFI_STA); if (ssid.length()) { resetSettings(); // To avoid issues (experience from WiFiManager) if (pass.length()) WiFi.begin(ssid.c_str(), pass.c_str()); else WiFi.begin(ssid.c_str()); } else { if((getSsid() == "") && (WiFi.status() != WL_CONNECTED)) { // No saved credentials, so skip trying to connect _connectStartTime = millis(); _freshConnectionAttempt = true; return false; } else { WiFi.begin(); } } //if in nonblock mode, skip this loop _connectStartTime = millis();// + 1; while (!_connectNonBlock && _connectStartTime) { handleWiFi(); delay(10); } return (WiFi.status() == WL_CONNECTED); } //attemptConnection void PersWiFiManager::handleWiFi() { if (!_connectStartTime) return; if (WiFi.status() == WL_CONNECTED) { _connectStartTime = 0; if (_connectHandler) _connectHandler(); return; } //if failed or no saved SSID or no WiFi credentials were found or not connected and time is up if ((WiFi.status() == WL_CONNECT_FAILED) || _freshConnectionAttempt || ((WiFi.status() != WL_CONNECTED) && ((millis() - _connectStartTime) > (1000 * WIFI_CONNECT_TIMEOUT)))) { startApMode(); _connectStartTime = 0; //reset connect start time _freshConnectionAttempt = false; } } //handleWiFi void PersWiFiManager::startApMode(){ //start AP mode IPAddress apIP(192, 168, 4, 1); WiFi.mode(WIFI_AP); WiFi.softAPConfig(apIP, apIP, IPAddress(255, 255, 255, 0)); _apPass.length() ? WiFi.softAP(getApSsid().c_str(), _apPass.c_str()) : WiFi.softAP(getApSsid().c_str()); if (_apHandler) _apHandler(); }//startApMode void PersWiFiManager::setConnectNonBlock(bool b) { _connectNonBlock = b; } //setConnectNonBlock void PersWiFiManager::setupWiFiHandlers() { IPAddress apIP(192, 168, 4, 1); _dnsServer->setErrorReplyCode(DNSReplyCode::NoError); _dnsServer->start((byte)53, "*", apIP); //used for captive portal in AP mode _server->on("/wifi/list", [&] () { //scan for wifi networks int n = WiFi.scanNetworks(); //build array of indices int ix[n]; for (int i = 0; i < n; i++) ix[i] = i; //sort by signal strength for (int i = 0; i < n; i++) for (int j = 1; j < n - i; j++) if (WiFi.RSSI(ix[j]) > WiFi.RSSI(ix[j - 1])) std::swap(ix[j], ix[j - 1]); //remove duplicates for (int i = 0; i < n; i++) for (int j = i + 1; j < n; j++) if (WiFi.SSID(ix[i]).equals(WiFi.SSID(ix[j])) && WiFi.encryptionType(ix[i]) == WiFi.encryptionType(ix[j])) ix[j] = -1; //build plain text string of wifi info //format [signal%]:[encrypted 0 or 1]:SSID String s = ""; s.reserve(2050); for (int i = 0; i < n && s.length() < 2000; i++) { //check s.length to limit memory usage if (ix[i] != -1) { #if defined(ESP8266) s += String(i ? "\n" : "") + ((constrain(WiFi.RSSI(ix[i]), -100, -50) + 100) * 2) + "," + ((WiFi.encryptionType(ix[i]) == ENC_TYPE_NONE) ? 0 : 1) + "," + WiFi.SSID(ix[i]); #elif defined(ESP32) s += String(i ? "\n" : "") + ((constrain(WiFi.RSSI(ix[i]), -100, -50) + 100) * 2) + "," + ((WiFi.encryptionType(ix[i]) == WIFI_AUTH_OPEN) ? 0 : 1) + "," + WiFi.SSID(ix[i]); #endif } } //send string to client _server->send(200, "text/plain", s); }); //_server->on /wifi/list _server->on("/wifi/connect", [&]() { _server->send(200, "text/html", "connecting..."); attemptConnection(_server->arg("n"), _server->arg("p")); }); //_server->on /wifi/connect _server->on("/wifi/ap", [&](){ _server->send(200, "text/html", "access point: "+getApSsid()); startApMode(); }); //_server->on /wifi/ap _server->on("/wifi/rst", [&]() { _server->send(200, "text/html", "Rebooting..."); delay(100); //ESP.restart(); // Adding Safer Restart method #if defined(ESP8266) ESP.wdtDisable(); ESP.reset(); #elif defined(ESP32) ESP.restart(); #endif delay(2000); }); #ifdef WIFI_HTM_PROGMEM _server->on("/wifi.htm", [&]() { _server->sendHeader("Cache-Control", " no-cache, no-store, must-revalidate"); _server->sendHeader("Expires", " 0"); _server->send(200, "text/html", wifi_htm); }); #endif }//setupWiFiHandlers bool PersWiFiManager::begin(const String& ssid, const String& pass) { #if defined(ESP32) WiFi.mode(WIFI_STA); // ESP32 needs this before setupWiFiHandlers(). Might be good for ESP8266 too? #endif setupWiFiHandlers(); return attemptConnection(ssid, pass); //switched order of these two for return } //begin void PersWiFiManager::resetSettings() { #if defined(ESP8266) WiFi.disconnect(); #elif defined(ESP32) wifi_mode_t m = WiFi.getMode(); if(!(m & WIFI_MODE_STA)) WiFi.mode(WIFI_STA); WiFi.disconnect(false, true); if(!(m & WIFI_MODE_STA)) WiFi.mode(m); #endif } // resetSettings String PersWiFiManager::getApSsid() { #if defined(ESP8266) return _apSsid.length() ? _apSsid : "ESP8266"; #elif defined(ESP32) return _apSsid.length() ? _apSsid : "ESP32"; #endif } //getApSsid String PersWiFiManager::getSsid() { #if defined(ESP8266) return WiFi.SSID(); #elif defined(ESP32) wifi_config_t conf; esp_wifi_get_config(WIFI_IF_STA, &conf); // load wifi settings to struct comf const char *SSID = reinterpret_cast(conf.sta.ssid); return String(SSID); #endif } //getSsid void PersWiFiManager::setApCredentials(const String& apSsid, const String& apPass) { if (apSsid.length()) _apSsid = apSsid; if (apPass.length() >= 8) _apPass = apPass; } //setApCredentials void PersWiFiManager::onConnect(WiFiChangeHandlerFunction fn) { _connectHandler = fn; } void PersWiFiManager::onAp(WiFiChangeHandlerFunction fn) { _apHandler = fn; }