chore: Update CI to use ESP-IDF 5.4

.github/workflows/build.yml

@@ -159,6 +159,6 @@ jobs:
     - name: Build Examples
       uses: espressif/esp-idf-ci-action@v1
       with:
-        esp_idf_version: release-v5.2
+        esp_idf_version: release-v5.4
         target: ${{ matrix.test.target }}
         path: ${{ matrix.test.path }}

.github/workflows/static_analysis.yml

@@ -23,8 +23,8 @@ jobs:
         # Do not build the project and do not use cmake to generate compile_commands.json
         use_cmake: false
 
-        # Use the 5.2 release version since it's what we build with
-        esp_idf_version: release/v5.2
+        # Use the 5.4 release version since it's what we build with
+        esp_idf_version: release/v5.4
 
         # (Optional) cppcheck args
         cppcheck_args: -i$GITHUB_WORKSPACE/lib -i$GITHUB_WORKSPACE/external -i$GITHUB_WORKSPACE/components/binary-log/detail -i$GITHUB_WORKSPACE/components/esp_littlefs -i$GITHUB_WORKSPACE/components/esp-nimble-cpp -i$GITHUB_WORKSPACE/components/hid-rp/include/hid -i$GITHUB_WORKSPACE/components/lvgl -i$GITHUB_WORKSPACE/components/esp-dsp --force --enable=all --inline-suppr --inconclusive --platform=mips32 --suppressions-list=$GITHUB_WORKSPACE/suppressions.txt

README.md

@@ -1,7 +1,11 @@
 # Espressif++ (ESPP)
 
 This is the repository for some c++ components developed for the
-[ESP-IDF](https://github.com/espressif/esp-idf) framework.
+[ESP-IDF](https://github.com/espressif/esp-idf) framework. Specifically we are
+targeting `ESP-IDF 5.4` currently.
+
+> NOTE: This repo attempts to stay up to date with ESP-IDF. This means that the
+> code within may not be supported on older ESP-IDF targets.
 
 Each component has an `example` folder which contains c++ code showing how to
 use the component and which has a README including instructions for how to run

components/file_system/example/main/file_system_example.cpp

@@ -269,9 +269,14 @@ extern "C" void app_main(void) {
     logger.info("Wrote '{}' to {}", file_contents, sub_file.string());
 
     // list files in a directory
+    // NOTE: if we're using ESP-IDF < 5.4, we can't use directory_iterator
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 4, 0)
     logger.info("Directory iterator:");
+#else
     logger.warn(
-        "NOTE: directory_iterator is not implemented in esp-idf right now :( (as of v5.2.2)");
+        "NOTE: directory_iterator is not implemented in esp-idf less than 5.4, the following "
+        "listing will not work.");
+#endif
     // NOTE: directory_iterator is not implemented in esp-idf right now :(
     // directory_iterator can be iterated using a range-for loop
     for (auto const &dir_entry : fs::recursive_directory_iterator{sandbox, ec}) {