chore: standardize on C++23 across examples, host tests, docs and CI

.github/copilot-instructions.md

@@ -145,7 +145,7 @@ Hardware section if it is not relevant to the PR.
 
 ## Code Style
 
-- C++20 standard
+- C++23 standard
 - Follow `.clang-format` for formatting
 - Use `espp` namespace
 - Follow the patterns of existing components for logging (`espp::Logger`), configuration structs (`Config`), and task usage

.github/workflows/desktop_tests.yml

@@ -1,7 +1,7 @@
 name: Desktop host + web tests
 
 # The desktop component's host-side checks: the C++ codec / model test
-# (components/desktop/test, built with g++ -std=c++20), the web app's node
+# (components/desktop/test, built with g++ -std=c++23), the web app's node
 # codec test against the same golden vectors, the dispatcher web-app lints
 # (module-id resolution, app registry) and the headless-Chrome smoke test of
 # desktop.html (file:// load with / without ?autoconnect and the ?selftest=1
@@ -44,7 +44,7 @@ jobs:
         working-directory: components/desktop/test
         run: |
           g++ --version | head -1
-          g++ -std=c++20 -Wall -Wextra -I../include -I../../stream_frame/include \
+          g++ -std=c++23 -Wall -Wextra -I../include -I../../stream_frame/include \
             desktop_host_test.cpp -o desktop_host_test
           ./desktop_host_test desktop_vectors.txt
 

components/adc/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(adc_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/adrc/example/CMakeLists.txt

@@ -18,4 +18,4 @@ set(
 
 project(adrc_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/ads1x15/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(ads1x15_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/ads7138/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(ads7138_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/adxl345/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(adxl345_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/as5600/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(as5600_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/at581x/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(at581x_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/aw9523/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(aw9523_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/basicmicro/README.md

@@ -76,5 +76,5 @@ duty-cycle ramp on motor 1 with encoder readback, and stop.
 The wire core is host-buildable and unit-tested without ESP-IDF:
 
 ```sh
-c++ -std=c++20 -I include -o /tmp/bm_test test/basicmicro_host_test.cpp && /tmp/bm_test
+c++ -std=c++23 -I include -o /tmp/bm_test test/basicmicro_host_test.cpp && /tmp/bm_test
 ```

components/basicmicro/example/CMakeLists.txt

@@ -16,4 +16,4 @@ set(
 
 project(basicmicro_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/basicmicro/test/basicmicro_host_test.cpp

@@ -1,6 +1,6 @@
 // Host-buildable unit tests for the Basicmicro (MCP / RoboClaw-family) packet
 // serial wire core. Build & run with:
-//   c++ -std=c++20 -I../include -I../../motor_controller/include \
+//   c++ -std=c++23 -I../include -I../../motor_controller/include \
 //       basicmicro_host_test.cpp -o test && ./test
 // (the -I../../motor_controller/include is for the shared BasicmicroCommand table)
 //

components/bdc_driver/example/CMakeLists.txt

@@ -18,4 +18,4 @@ set(
 
 project(bdc_driver_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/binary-log/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(binary_log_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/bldc_current_sense/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(bldc_current_sense_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/bldc_motor/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(bldc_motor_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/ble_gatt_server/example/CMakeLists.txt

@@ -20,4 +20,4 @@ set(
 
 project(ble_gatt_server_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/bm8563/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(bm8563_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/bmi270/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(bmi270_example)
 
-set(CMAKE_CXX_STANDARD 20) 
+set(CMAKE_CXX_STANDARD 23) 

components/bq27220/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(bq27220_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/button/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(button_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/byte90/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(byte90_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/canopen/README.md

@@ -35,7 +35,7 @@ SDO transactions are blocking with a configurable timeout; `process_frame()`
 must be called from a different task than the one performing SDO transfers
 (automatic with `espp::Twai`, whose `on_receive` runs in its own task).
 
-The wire core (`include/detail/canopen_core.hpp`) is host-buildable pure C++20
+The wire core (`include/detail/canopen_core.hpp`) is host-buildable pure C++23
 with no ESP dependencies, and is covered by golden-frame unit tests in
 `test/canopen_host_test.cpp`.
 

components/canopen/can_bridge_example/CMakeLists.txt

@@ -55,4 +55,4 @@ set(
 
 project(can_bridge_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/canopen/can_bridge_example/README.md

@@ -150,7 +150,7 @@ The node is host-buildable and unit-tested against the `canopen` component's
 client-side frame builders / parsers:
 
 ```
-cd test && c++ -std=c++20 -I../../include -I../main simulated_node_host_test.cpp -o test && ./test
+cd test && c++ -std=c++23 -I../../include -I../main simulated_node_host_test.cpp -o test && ./test
 ```
 
 The simulation has no bit timing, so the baudrate is only reported; in

components/canopen/can_bridge_example/test/simulated_node_host_test.cpp

@@ -1,6 +1,6 @@
 // Host-buildable tests for the bridge example's simulated CiA 402 node
 // (main/simulated_ds402_node.hpp). Build & run with:
-//   c++ -std=c++20 -I../../include -I../main simulated_node_host_test.cpp -o test && ./test
+//   c++ -std=c++23 -I../../include -I../main simulated_node_host_test.cpp -o test && ./test
 //
 // The node is driven with the canopen component's client-side frame builders
 // / parsers, so a passing run means espp::CanopenClient / Ds402Drive (and the

components/canopen/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(canopen_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/canopen/test/canopen_host_test.cpp

@@ -1,6 +1,6 @@
 // Host-buildable unit tests for the CANopen (CiA 301) wire core and the
 // CiA 402 statusword decoding. Build & run with:
-//   c++ -std=c++20 -I../include canopen_host_test.cpp -o test && ./test
+//   c++ -std=c++23 -I../include canopen_host_test.cpp -o test && ./test
 //
 // These tests exercise espp::detail::canopen / espp::detail::ds402 directly so
 // they need no ESP-IDF headers.

components/chsc6x/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(chsc6x_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/cli/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(cli_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/cobs/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(cobs_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/color/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(color_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/controller/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(controller_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/cst816/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(cst816_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/csv/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(csv_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/desktop/example/CMakeLists.txt

@@ -2,7 +2,7 @@
 # in this exact order for cmake to work correctly
 cmake_minimum_required(VERSION 3.20)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)
 
 # This example needs the managed `espressif/esp_tinyusb` component (required by
 # usb_device) and `joltwallet/littlefs` (required by file_system). It supports

components/desktop/test/desktop_host_test.cpp

@@ -1,7 +1,7 @@
 // Host-buildable unit tests for the espp desktop wire codec
 // (include/detail/desktop_protocol.hpp) and the ESP-free desktop model
 // (include/detail/desktop_model.hpp). Build & run from this directory with:
-//   c++ -std=c++20 -I../include -I../../stream_frame/include desktop_host_test.cpp -o test &&
+//   c++ -std=c++23 -I../include -I../../stream_frame/include desktop_host_test.cpp -o test &&
 //   ./test
 //
 // The golden vectors live in desktop_vectors.txt (shared with the web app's

components/dispatcher/README.md

@@ -213,7 +213,7 @@ reported as a warning, not refused.
 ## Host tests
 
 ```
-c++ -std=c++20 -Werror -I components/dispatcher/include -I components/stream_frame/include \
+c++ -std=c++23 -Werror -I components/dispatcher/include -I components/stream_frame/include \
     components/dispatcher/test/dispatcher_host_test.cpp -o test && ./test
 node components/dispatcher/web/test/resolve_module_id_test.js   # the consoles' shared discovery helpers
 node components/dispatcher/web/test/apps_registry_test.js       # app metadata, registry generator, hub app matching

components/dispatcher/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(dispatcher_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/dispatcher/test/dispatcher_host_test.cpp

@@ -1,5 +1,5 @@
 // Host-buildable unit tests for espp::Dispatcher (v2). Build & run with:
-//   c++ -std=c++20 -Werror -I components/dispatcher/include \
+//   c++ -std=c++23 -Werror -I components/dispatcher/include \
 //       -I components/stream_frame/include \
 //       components/dispatcher/test/dispatcher_host_test.cpp -o test && ./test
 //

components/display_drivers/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(display_drivers_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/dns_server/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(dns_server_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/drv2605/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(drv2605_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/encoder/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(encoder_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/esp-box/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(esp_box_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/esp32-ethernet-kit/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(esp32_ethernet_kit_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/esp32-p4-eth/example/CMakeLists.txt

@@ -45,4 +45,4 @@ set(
 
 project(esp32_p4_eth_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/esp32-p4-function-ev-board/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(esp32_p4_function_ev_board_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/esp32-p4-nano/example/CMakeLists.txt

@@ -45,4 +45,4 @@ set(
 
 project(esp32_p4_nano_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/esp32-timer-cam/example/CMakeLists.txt

@@ -30,7 +30,7 @@ set(
 
 project(esp_timer_cam_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)
 
 # The mDNS component (espressif/mdns from the registry, or the vendored copy)
 # trips -Werror=stringop-truncation under the ESP-IDF v6 toolchain (GCC 15). It

components/ethernet/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(ethernet_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/event_manager/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(event_manager_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/expressive_eyes/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(expressive_eyes_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/file_system/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(file_system_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/filters/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(filters_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/ft5x06/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(ft5x06_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/ftp/example/CMakeLists.txt

@@ -19,4 +19,4 @@ set(
 
 project(ftp_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)

components/gfps_service/example/CMakeLists.txt

@@ -20,4 +20,4 @@ set(
 
 project(gfps_service_example)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)