#include #include #ifdef ESP32 #include #include #elif defined(ESP8266) #include #include #elif defined(TARGET_RP2040) #include #include #endif #include #include #include #include "StreamConcat.h" DNSServer dnsServer; AsyncWebServer server(80); void setup() { Serial.begin(115200); LittleFS.begin(); #ifndef CONFIG_IDF_TARGET_ESP32H2 WiFi.mode(WIFI_AP); WiFi.softAP("esp-captive"); dnsServer.start(53, "*", WiFi.softAPIP()); #endif File file1 = LittleFS.open("/header.html", "w"); file1.print("ESP Captive Portal"); file1.close(); File file2 = LittleFS.open("/body.html", "w"); file2.print("

Welcome to ESP Captive Portal

"); file2.close(); File file3 = LittleFS.open("/footer.html", "w"); file3.print(""); file3.close(); server.on("/", HTTP_GET, [](AsyncWebServerRequest* request) { File header = LittleFS.open("/header.html", "r"); File body = LittleFS.open("/body.html", "r"); StreamConcat stream1(&header, &body); StreamString content; #if defined(TARGET_RP2040) content.printf("FreeHeap: %d", rp2040.getFreeHeap()); #else content.printf("FreeHeap: %" PRIu32, ESP.getFreeHeap()); #endif StreamConcat stream2 = StreamConcat(&stream1, &content); File footer = LittleFS.open("/footer.html", "r"); StreamConcat stream3 = StreamConcat(&stream2, &footer); request->send(stream3, "text/html", stream3.available()); header.close(); body.close(); footer.close(); }); server.onNotFound([](AsyncWebServerRequest* request) { request->send(404, "text/plain", "Not found"); }); server.begin(); } uint32_t last = 0; void loop() { // dnsServer.processNextRequest(); if (millis() - last > 2000) { #if defined(TARGET_RP2040) Serial.printf("FreeHeap: %d", rp2040.getFreeHeap()); #else Serial.printf("FreeHeap: %" PRIu32, ESP.getFreeHeap()); #endif last = millis(); } }