WiFi setup

#include #include #include #include #ifndef BLYNK_FS const char* config_form = R"html( WiFi setup

)html"; #endif ESP8266WebServer server(80); ESP8266HTTPUpdateServer httpUpdater; DNSServer dnsServer; const byte DNS_PORT = 53; static int connectNetRetries = WIFI_CLOUD_MAX_RETRIES; static int connectBlynkRetries = WIFI_CLOUD_MAX_RETRIES; void restartMCU() { ESP.restart(); ESP.reset(); while(1) {}; } static String encodeUniquePart(uint32_t n, unsigned len) { static constexpr char alphabet[] = { "0W8N4Y1HP5DF9K6JM3C2UA7R" }; static constexpr int base = sizeof(alphabet)-1; char buf[16] = { 0, }; char prev = 0; for (unsigned i = 0; i < len; n /= base) { char c = alphabet[n % base]; if (c == prev) { c = alphabet[(n+1) % base]; } prev = buf[i++] = c; } return String(buf); } static String getWiFiName(bool withPrefix = true) { byte mac[6] = { 0, }; WiFi.macAddress(mac); uint32_t unique = 0; for (int i=0; i<4; i++) { unique = BlynkCRC32(&mac, sizeof(mac), unique); } String devUnique = encodeUniquePart(unique, 4); String devPrefix = CONFIG_DEVICE_PREFIX; String devName = String(BLYNK_TEMPLATE_NAME).substring(0, 31-6-devPrefix.length()); if (withPrefix) { return devPrefix + " " + devName + "-" + devUnique; } else { return devName + "-" + devUnique; } } static inline String macToString(byte mac[6]) { char buff[20]; snprintf(buff, sizeof(buff), "%02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); return String(buff); } static inline const char* wifiSecToStr(uint8_t t) { switch (t) { case ENC_TYPE_NONE: return "OPEN"; case ENC_TYPE_WEP: return "WEP"; case ENC_TYPE_TKIP: return "WPA"; case ENC_TYPE_CCMP: return "WPA2"; case ENC_TYPE_AUTO: return "WPA+WPA2"; default: return "unknown"; } } static String getWiFiMacAddress() { return WiFi.macAddress(); } static String getWiFiApBSSID() { return WiFi.softAPmacAddress(); } static String getWiFiNetworkSSID() { return WiFi.SSID(); } static String getWiFiNetworkBSSID() { return WiFi.BSSIDstr(); } void enterConfigMode() { WiFi.mode(WIFI_OFF); delay(100); WiFi.mode(WIFI_AP_STA); WiFi.softAPConfig(WIFI_AP_IP, WIFI_AP_IP, WIFI_AP_Subnet); WiFi.softAP(getWiFiName().c_str()); delay(500); IPAddress myIP = WiFi.softAPIP(); if (myIP == (uint32_t)0) { config_set_last_error(BLYNK_PROV_ERR_INTERNAL); BlynkState::set(MODE_ERROR); return; } // Set up DNS Server dnsServer.setTTL(300); // Time-to-live 300s dnsServer.setErrorReplyCode(DNSReplyCode::ServerFailure); // Return code for non-accessible domains #ifdef WIFI_CAPTIVE_PORTAL_ENABLE dnsServer.start(DNS_PORT, "*", WiFi.softAPIP()); // Point all to our IP server.onNotFound(handleRoot); #else dnsServer.start(DNS_PORT, CONFIG_AP_URL, WiFi.softAPIP()); DEBUG_PRINT(String("AP URL: ") + CONFIG_AP_URL); #endif httpUpdater.setup(&server, "/update"); #ifndef BLYNK_FS server.on("/", []() { server.send(200, "text/html", config_form); }); #endif server.on("/config", []() { DEBUG_PRINT("Applying configuration..."); String ssid = server.arg("ssid"); String ssidManual = server.arg("ssidManual"); String pass = server.arg("pass"); if (ssidManual != "") { ssid = ssidManual; } String token = server.arg("blynk"); String host = server.arg("host"); String port = server.arg("port_ssl"); String ip = server.arg("ip"); String mask = server.arg("mask"); String gw = server.arg("gw"); String dns = server.arg("dns"); String dns2 = server.arg("dns2"); bool forceSave = server.arg("save").toInt(); String content; DEBUG_PRINT(String("WiFi SSID: ") + ssid + " Pass: " + pass); DEBUG_PRINT(String("Blynk cloud: ") + token + " @ " + host + ":" + port); if (token.length() == 32 && ssid.length() > 0) { configStore = configDefault; CopyString(ssid, configStore.wifiSSID); CopyString(pass, configStore.wifiPass); CopyString(token, configStore.cloudToken); if (host.length()) { CopyString(host, configStore.cloudHost); } if (port.length()) { configStore.cloudPort = port.toInt(); } IPAddress addr; if (ip.length() && addr.fromString(ip)) { configStore.staticIP = addr; configStore.setFlag(CONFIG_FLAG_STATIC_IP, true); } else { configStore.setFlag(CONFIG_FLAG_STATIC_IP, false); } if (mask.length() && addr.fromString(mask)) { configStore.staticMask = addr; } if (gw.length() && addr.fromString(gw)) { configStore.staticGW = addr; } if (dns.length() && addr.fromString(dns)) { configStore.staticDNS = addr; } if (dns2.length() && addr.fromString(dns2)) { configStore.staticDNS2 = addr; } if (forceSave) { configStore.setFlag(CONFIG_FLAG_VALID, true); config_save(); content = R"json({"status":"ok","msg":"Configuration saved"})json"; } else { content = R"json({"status":"ok","msg":"Trying to connect..."})json"; } server.send(200, "application/json", content); connectNetRetries = connectBlynkRetries = 1; BlynkState::set(MODE_SWITCH_TO_STA); } else { DEBUG_PRINT("Configuration invalid"); content = R"json({"status":"error","msg":"Configuration invalid"})json"; server.send(500, "application/json", content); } }); server.on("/board_info.json", []() { // Configuring starts with board info request (may impact indication) BlynkState::set(MODE_CONFIGURING); DEBUG_PRINT("Sending board info..."); const char* tmpl = BLYNK_TEMPLATE_ID; char buff[512]; snprintf(buff, sizeof(buff), R"json({"board":"%s","tmpl_id":"%s","fw_type":"%s","fw_ver":"%s","ssid":"%s","bssid":"%s","mac":"%s","last_error":%d,"wifi_scan":true,"static_ip":true})json", BLYNK_TEMPLATE_NAME, tmpl ? tmpl : "Unknown", BLYNK_FIRMWARE_TYPE, BLYNK_FIRMWARE_VERSION, getWiFiName().c_str(), getWiFiApBSSID().c_str(), getWiFiMacAddress().c_str(), configStore.last_error ); server.send(200, "application/json", buff); }); server.on("/wifi_scan.json", []() { DEBUG_PRINT("Scanning networks..."); int wifi_nets = WiFi.scanNetworks(true, true); const uint32_t t = millis(); while (wifi_nets < 0 && millis() - t < 20000) { delay(20); wifi_nets = WiFi.scanComplete(); } DEBUG_PRINT(String("Found networks: ") + wifi_nets); if (wifi_nets > 0) { // Sort networks int indices[wifi_nets]; for (int i = 0; i < wifi_nets; i++) { indices[i] = i; } for (int i = 0; i < wifi_nets; i++) { for (int j = i + 1; j < wifi_nets; j++) { if (WiFi.RSSI(indices[j]) > WiFi.RSSI(indices[i])) { std::swap(indices[i], indices[j]); } } } wifi_nets = BlynkMin(15, wifi_nets); // Show top 15 networks // TODO: skip empty names server.setContentLength(CONTENT_LENGTH_UNKNOWN); server.send(200, "application/json", "[\n"); char buff[256]; for (int i = 0; i < wifi_nets; i++){ int id = indices[i]; snprintf(buff, sizeof(buff), R"json( {"ssid":"%s","bssid":"%s","rssi":%i,"sec":"%s","ch":%i,"hidden":%d})json", WiFi.SSID(id).c_str(), WiFi.BSSIDstr(id).c_str(), WiFi.RSSI(id), wifiSecToStr(WiFi.encryptionType(id)), WiFi.channel(id), WiFi.isHidden(id) ); server.sendContent(buff); if (i != wifi_nets-1) server.sendContent(",\n"); } WiFi.scanDelete(); server.sendContent("\n]"); } else { server.send(200, "application/json", "[]"); } }); server.on("/reset", []() { BlynkState::set(MODE_RESET_CONFIG); server.send(200, "application/json", R"json({"status":"ok","msg":"Configuration reset"})json"); }); server.on("/reboot", []() { restartMCU(); }); #ifdef BLYNK_FS server.serveStatic("/img", BLYNK_FS, "/img"); server.serveStatic("/", BLYNK_FS, "/index.html"); #endif server.begin(); while (BlynkState::is(MODE_WAIT_CONFIG) || BlynkState::is(MODE_CONFIGURING)) { delay(10); dnsServer.processNextRequest(); server.handleClient(); app_loop(); if (BlynkState::is(MODE_CONFIGURING) && WiFi.softAPgetStationNum() == 0) { BlynkState::set(MODE_WAIT_CONFIG); } } server.stop(); } void enterConnectNet() { BlynkState::set(MODE_CONNECTING_NET); DEBUG_PRINT(String("Connecting to WiFi: ") + configStore.wifiSSID); WiFi.mode(WIFI_STA); String hostname = getWiFiName(); hostname.replace(" ", "-"); WiFi.hostname(hostname.c_str()); if (configStore.getFlag(CONFIG_FLAG_STATIC_IP)) { if (!WiFi.config(configStore.staticIP, configStore.staticGW, configStore.staticMask, configStore.staticDNS, configStore.staticDNS2) ) { DEBUG_PRINT("Failed to configure Static IP"); config_set_last_error(BLYNK_PROV_ERR_CONFIG); BlynkState::set(MODE_ERROR); return; } } if (!WiFi.begin(configStore.wifiSSID, configStore.wifiPass)) { config_set_last_error(BLYNK_PROV_ERR_CONFIG); BlynkState::set(MODE_ERROR); return; } unsigned long timeoutMs = millis() + WIFI_NET_CONNECT_TIMEOUT; while ((timeoutMs > millis()) && (WiFi.status() != WL_CONNECTED)) { delay(10); app_loop(); if (!BlynkState::is(MODE_CONNECTING_NET)) { WiFi.disconnect(); return; } } if (WiFi.status() == WL_CONNECTED) { IPAddress localip = WiFi.localIP(); if (configStore.getFlag(CONFIG_FLAG_STATIC_IP)) { BLYNK_LOG_IP("Using Static IP: ", localip); } else { BLYNK_LOG_IP("Using Dynamic IP: ", localip); } connectNetRetries = WIFI_CLOUD_MAX_RETRIES; BlynkState::set(MODE_CONNECTING_CLOUD); } else if (--connectNetRetries <= 0) { config_set_last_error(BLYNK_PROV_ERR_NETWORK); BlynkState::set(MODE_ERROR); } } void enterConnectCloud() { BlynkState::set(MODE_CONNECTING_CLOUD); Blynk.config(configStore.cloudToken, configStore.cloudHost, configStore.cloudPort); Blynk.connect(0); unsigned long timeoutMs = millis() + WIFI_CLOUD_CONNECT_TIMEOUT; while ((timeoutMs > millis()) && (WiFi.status() == WL_CONNECTED) && (!Blynk.isTokenInvalid()) && (Blynk.connected() == false)) { delay(10); Blynk.run(); app_loop(); if (!BlynkState::is(MODE_CONNECTING_CLOUD)) { Blynk.disconnect(); return; } } if (millis() > timeoutMs) { DEBUG_PRINT("Timeout"); } if (Blynk.isTokenInvalid()) { config_set_last_error(BLYNK_PROV_ERR_TOKEN); BlynkState::set(MODE_WAIT_CONFIG); // TODO: retry after timeout } else if (WiFi.status() != WL_CONNECTED) { BlynkState::set(MODE_CONNECTING_NET); } else if (Blynk.connected()) { BlynkState::set(MODE_RUNNING); connectBlynkRetries = WIFI_CLOUD_MAX_RETRIES; if (!configStore.getFlag(CONFIG_FLAG_VALID)) { configStore.last_error = BLYNK_PROV_ERR_NONE; configStore.setFlag(CONFIG_FLAG_VALID, true); config_save(); Blynk.sendInternal("meta", "set", "Hotspot Name", getWiFiName()); } } else if (--connectBlynkRetries <= 0) { config_set_last_error(BLYNK_PROV_ERR_CLOUD); BlynkState::set(MODE_ERROR); } } void enterSwitchToSTA() { BlynkState::set(MODE_SWITCH_TO_STA); DEBUG_PRINT("Switching to STA..."); delay(1000); WiFi.mode(WIFI_OFF); delay(100); WiFi.mode(WIFI_STA); BlynkState::set(MODE_CONNECTING_NET); } void enterError() { BlynkState::set(MODE_ERROR); unsigned long timeoutMs = millis() + 10000; while (timeoutMs > millis() || g_buttonPressed) { delay(10); app_loop(); if (!BlynkState::is(MODE_ERROR)) { return; } } DEBUG_PRINT("Restarting after error."); delay(10); restartMCU(); }

WiFi SSID:
Password:
Auth token:
Host:
Port: