fix: support latest pico sdk

Author: ayushsharma82

.github/workflows/build-arduino.yml

@@ -123,10 +123,10 @@ jobs:
         run: curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | BINDIR=/usr/local/bin sh
 
       - name: Update core index
-        run: arduino-cli core update-index --additional-urls https://github.com/earlephilhower/arduino-pico/releases/download/4.4.3/package_rp2040_index.json
+        run: arduino-cli core update-index --additional-urls https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
 
       - name: Install core
-        run: arduino-cli core install --additional-urls https://github.com/earlephilhower/arduino-pico/releases/download/4.4.3/package_rp2040_index.json rp2040:rp2040
+        run: arduino-cli core install --additional-urls https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json rp2040:rp2040
 
       - name: Install ArduinoJson
         run: arduino-cli lib install ArduinoJson

platformio.ini

@@ -138,7 +138,7 @@ lib_deps =
   ESP32Async/ESPAsyncTCP @ 2.0.0
 
 [env:ci-raspberrypi]
-platform = https://github.com/maxgerhardt/platform-raspberrypi.git#4d1acd7caac8c055c05f5ac6c68fa5f079730947
+platform = https://github.com/maxgerhardt/platform-raspberrypi.git
 board = ${sysenv.PIO_BOARD}
 board_build.core = earlephilhower
 lib_deps =

src/AsyncEventSource.h

@@ -60,8 +60,14 @@ class AsyncEventSourceMessage {
 
 public:
   AsyncEventSourceMessage(AsyncEvent_SharedData_t data) : _data(data){};
-#ifdef ESP32
+#if defined(ESP32)
   AsyncEventSourceMessage(const char *data, size_t len) : _data(std::make_shared<String>(data, len)){};
+#elif defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
+  AsyncEventSourceMessage(const char *data, size_t len) : _data(std::make_shared<String>()) {
+    if (data && len > 0) {
+      _data->concat(data, len);
+    }
+  };
 #else
   // esp8266's String does not have constructor with data/length arguments. Use a concat method here
   AsyncEventSourceMessage(const char *data, size_t len) {

src/WebHandlers.cpp

@@ -222,7 +222,11 @@ void AsyncStaticWebHandler::handleRequest(AsyncWebServerRequest *request) {
     etag = lw ^ request->_tempFile.size();  // etag combines file size and lastmod timestamp
 #endif
   } else {
+#if defined(TARGET_RP2040) || defined(TARGET_RP2350) || defined(PICO_RP2040) || defined(PICO_RP2350)
+    etag = String(request->_tempFile.size());
+#else
     etag = request->_tempFile.size();
+#endif
   }
 
   bool not_modified = false;