Function setup

examples/Asio/Server/ServerReal.h:78–150

}

void setup() {
    Serial.begin(115200);
    Serial.println("HTTP Server Example");

    FastLED.addLeds<WS2812, DATA_PIN, GRB>(leds, NUM_LEDS);
    FastLED.setBrightness(64);

    // ROUTE 1: GET / - Hello message
    server.get("/", [](const fl::http_request& req) {
        Serial.println("[GET /] Hello request");

        fl::http_response response;
        response.status(200)
                .header("Content-Type", "text/plain")
                .body("Hello from FastLED!\n");

        return response;
    });

    // ROUTE 2: GET /status - LED status as JSON
    server.get("/status", [](const fl::http_request& req) {
        Serial.println("[GET /status] Status request");

        fl::json status = fl::json::object();
        status.set("num_leds", NUM_LEDS);
        status.set("brightness", FastLED.getBrightness());
        status.set("uptime_ms", static_cast<fl::i64>(fl::millis()));

        return fl::http_response::ok().json(status);
    });

    // ROUTE 3: POST /color - Set LED color
    server.post("/color", [](const fl::http_request& req) {
        Serial.println("[POST /color] Color change request");

        fl::json body = fl::json::parse(req.body());
        if (body.is_null()) {
            return fl::http_response::bad_request("Invalid JSON");
        }

        int r = body["r"] | 0;
        int g = body["g"] | 0;
        int b = body["b"] | 0;

        fill_solid(leds, NUM_LEDS, fl::CRGB(r, g, b));

        Serial.print("Color set to RGB(");
        Serial.print(r); Serial.print(", ");
        Serial.print(g); Serial.print(", ");
        Serial.print(b); Serial.println(")");

        return fl::http_response::ok("Color updated\n");
    });

    // ROUTE 4: GET /ping - Health check
    server.get("/ping", [](const fl::http_request& req) {
        return fl::http_response::ok("pong\n");
    });