From 85ea4e995a75abe061f6fc375ea0481084dddd43 Mon Sep 17 00:00:00 2001 From: schererleander Date: Tue, 20 Jan 2026 08:34:54 +0100 Subject: initial commit --- .../serversentevents/CMakeLists.txt | 8 ++ .../serversentevents/README.md | 1 + .../serversentevents/main/CMakeLists.txt | 2 + .../serversentevents/main/idf_component.yml | 6 ++ .../serversentevents/main/main.cpp | 95 ++++++++++++++++++++++ .../serversentevents/sdkconfig.defaults | 12 +++ 6 files changed, 124 insertions(+) create mode 100644 libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/CMakeLists.txt create mode 100644 libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/README.md create mode 100644 libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/CMakeLists.txt create mode 100644 libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/idf_component.yml create mode 100644 libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/main.cpp create mode 100644 libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/sdkconfig.defaults (limited to 'libraries/ESP_Async_WebServer/idf_component_examples/serversentevents') diff --git a/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/CMakeLists.txt b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/CMakeLists.txt new file mode 100644 index 0000000..664d458 --- /dev/null +++ b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/CMakeLists.txt @@ -0,0 +1,8 @@ +# For more information about build system see +# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html +# The following five lines of boilerplate have to be in your project's +# CMakeLists in this exact order for cmake to work correctly +cmake_minimum_required(VERSION 3.16) + +include($ENV{IDF_PATH}/tools/cmake/project.cmake) +project(main) diff --git a/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/README.md b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/README.md new file mode 100644 index 0000000..ea21ac9 --- /dev/null +++ b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/README.md @@ -0,0 +1 @@ +### Basic example to show how to use ServerSentEvents diff --git a/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/CMakeLists.txt b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/CMakeLists.txt new file mode 100644 index 0000000..9eb7ec4 --- /dev/null +++ b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/CMakeLists.txt @@ -0,0 +1,2 @@ +idf_component_register(SRCS "main.cpp" + INCLUDE_DIRS ".") diff --git a/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/idf_component.yml b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/idf_component.yml new file mode 100644 index 0000000..e2d1c65 --- /dev/null +++ b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/idf_component.yml @@ -0,0 +1,6 @@ +## IDF Component Manager Manifest File +dependencies: + esp32async/espasyncwebserver: + version: "*" + override_path: "../../../" + pre_release: true diff --git a/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/main.cpp b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/main.cpp new file mode 100644 index 0000000..59a1f59 --- /dev/null +++ b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/main/main.cpp @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: LGPL-3.0-or-later +// Copyright 2016-2025 Hristo Gochkov, Mathieu Carbou, Emil Muratov + +// +// SSE example +// + +#include +#include +#include + +#include + +static const char *htmlContent PROGMEM = R"( + + + + Server-Sent Events + + + +

Open your browser console!

+ + +)"; + +static const size_t htmlContentLength = strlen_P(htmlContent); + +static AsyncWebServer server(80); +static AsyncEventSource events("/events"); + +void setup() { + Serial.begin(115200); + +#ifndef CONFIG_IDF_TARGET_ESP32H2 + WiFi.mode(WIFI_AP); + WiFi.softAP("esp-captive"); +#endif + + // curl -v http://192.168.4.1/ + server.on("/", HTTP_GET, [](AsyncWebServerRequest *request) { + // need to cast to uint8_t* + // if you do not, the const char* will be copied in a temporary String buffer + request->send(200, "text/html", (uint8_t *)htmlContent, htmlContentLength); + }); + + events.onConnect([](AsyncEventSourceClient *client) { + Serial.printf("SSE Client connected! ID: %" PRIu32 "\n", client->lastId()); + client->send("hello!", NULL, millis(), 1000); + }); + + events.onDisconnect([](AsyncEventSourceClient *client) { + Serial.printf("SSE Client disconnected! ID: %" PRIu32 "\n", client->lastId()); + }); + + server.addHandler(&events); + + server.begin(); +} + +static uint32_t lastSSE = 0; +static uint32_t deltaSSE = 3000; + +static uint32_t lastHeap = 0; + +void loop() { + uint32_t now = millis(); + if (now - lastSSE >= deltaSSE) { + events.send(String("ping-") + now, "heartbeat", now); + lastSSE = millis(); + } + + if (now - lastHeap >= 2000) { + Serial.printf("Free heap: %" PRIu32 "\n", ESP.getFreeHeap()); + lastHeap = now; + } +} diff --git a/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/sdkconfig.defaults b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/sdkconfig.defaults new file mode 100644 index 0000000..bb72365 --- /dev/null +++ b/libraries/ESP_Async_WebServer/idf_component_examples/serversentevents/sdkconfig.defaults @@ -0,0 +1,12 @@ +# +# Arduino ESP32 +# +CONFIG_AUTOSTART_ARDUINO=y +# end of Arduino ESP32 + +# +# FREERTOS +# +CONFIG_FREERTOS_HZ=1000 +# end of FREERTOS +# end of Component config -- cgit v1.3.1