test pr to run CI

.github/workflows/build.yml

@@ -8,34 +8,29 @@ jobs:
     container: zephyrprojectrtos/ci:latest
     env:
       CMAKE_PREFIX_PATH: /opt/toolchains
+      PR_NUMBER: ${{ github.event.number }}
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          path: ArduinoCore-zephyr
-
       - name: Initialize
-        working-directory: ArduinoCore-zephyr
         run: |
           mkdir build && cd build
-          west init -m https://github.com/arduino/ArduinoCore-zephyr.git
+          west init -m https://github.com/${{ github.repository }}
+          cd modules/lib/ArduinoCore-zephyr/
+          git fetch origin ${{ github.ref }}
+          git checkout FETCH_HEAD
+          cd -
           west update
-          rm -rf modules/lib/ArduinoCore-zephyr/*
-          cp -r ../* modules/lib/ArduinoCore-zephyr || true
-          rm modules/lib/ArduinoCore-zephyr/cores/arduino/api
-          cp -r modules/lib/ArduinoCore-API/api modules/lib/ArduinoCore-zephyr/cores/arduino/api
 
       - name: Build fade
-        working-directory: ArduinoCore-zephyr/build
+        working-directory: build
         run: |
-          west build -p -b arduino_nano_33_ble//sense ../samples/fade
+          west build -p -b arduino_nano_33_ble//sense modules/lib/ArduinoCore-zephyr/samples/fade
 
       - name: Build i2cdemo
-        working-directory: ArduinoCore-zephyr/build
+        working-directory: build
         run: |
-          west build -p -b ek_ra8d1 ../samples/i2cdemo
+          west build -p -b ek_ra8d1 modules/lib/ArduinoCore-zephyr/samples/i2cdemo
 
       - name: Build adc
-        working-directory: ArduinoCore-zephyr/build
+        working-directory: build
         run: |
-          west build -p -b arduino_nano_33_ble//sense ../samples/analog_input
+          west build -p -b arduino_nano_33_ble/nrf52840/sense modules/lib/ArduinoCore-zephyr/samples/analog_input

CMakeLists.txt

@@ -12,7 +12,7 @@ if (CONFIG_ARDUINO_API)
 endif()
 endif()
 
-if (CONFIG_ARDUINO_API)
+if (CONFIG_ARDUINO_API AND NOT CONFIG_LLEXT)
 add_subdirectory(cores)
 add_subdirectory(libraries)
 zephyr_include_directories(${variant_dir})

cores/CMakeLists.txt

@@ -1,3 +1,15 @@
 # SPDX-License-Identifier: Apache-2.0
 
-add_subdirectory(arduino)
+add_subdirectory(arduino)
+
+zephyr_include_directories(../../ArduinoCore-API/)
+
+if(NOT DEFINED ARDUINO_BUILD_PATH)
+zephyr_sources(../../ArduinoCore-API/api/CanMsg.cpp)
+zephyr_sources(../../ArduinoCore-API/api/CanMsgRingbuffer.cpp)
+zephyr_sources(../../ArduinoCore-API/api/Common.cpp)
+zephyr_sources(../../ArduinoCore-API/api/IPAddress.cpp)
+zephyr_sources(../../ArduinoCore-API/api/Print.cpp)
+zephyr_sources(../../ArduinoCore-API/api/Stream.cpp)
+zephyr_sources(../../ArduinoCore-API/api/String.cpp)
+endif()

cores/arduino/CMakeLists.txt

@@ -9,14 +9,6 @@ zephyr_sources(zephyrCommon.cpp)
 zephyr_sources(USB.cpp)
 zephyr_sources(itoa.cpp)
 
-zephyr_sources(api/CanMsg.cpp)
-zephyr_sources(api/CanMsgRingbuffer.cpp)
-zephyr_sources(api/Common.cpp)
-zephyr_sources(api/IPAddress.cpp)
-zephyr_sources(api/Print.cpp)
-zephyr_sources(api/Stream.cpp)
-zephyr_sources(api/String.cpp)
-
 if(DEFINED CONFIG_ARDUINO_ENTRY)
 zephyr_sources(main.cpp)
 zephyr_sources(threads.cpp)

cores/arduino/main.cpp

@@ -15,11 +15,20 @@
 void start_static_threads();
 #endif
 
+
+// This function will be overwriten by most variants.
+void __attribute__((weak))initVariant(void) {
+
+}
+
+
 int main(void) {
 #if (DT_NODE_HAS_PROP(DT_PATH(zephyr_user), cdc_acm) && CONFIG_USB_CDC_ACM)
   Serial.begin(115200);
 #endif
 
+  initVariant();
+
 #ifdef CONFIG_MULTITHREADING
   start_static_threads();
 #endif

extra/bootstrap.sh

@@ -10,8 +10,9 @@ source venv/bin/activate
 pip install west
 west init -l .
 west update
+west zephyr-export
 pip install -r ../zephyr/scripts/requirements-base.txt
 # download slim toolchain from https://github.com/zephyrproject-rtos/sdk-ng/releases/tag/v0.16.8
 
 # add here the required blobs based on supported platforms
-west blobs fetch hal_nxp
+west blobs fetch hal_nxp

extra/build.sh

@@ -1,49 +1,84 @@
-if [ x$ZEPHYR_SDK_INSTALL_DIR == x"" ]; then
-export ZEPHYR_SDK_INSTALL_DIR=/ssd/zephyr-sdk-0.16.8/
-fi
+#!/bin/bash
 
 set -e
 
-board=$1
-variant=$2
-third_arg=$3
-extra_args=""
+if [ x$ZEPHYR_SDK_INSTALL_DIR == x"" ]; then
+	SDK_PATH=$(west sdk list | grep path | tail -n 1 | cut -d ':' -f 2 | tr -d ' ')
+	if [ x$SDK_PATH == x ]; then
+		echo "ZEPHYR_SDK_INSTALL_DIR not set and no SDK found"
+		exit 1
+	fi
+	echo "ZEPHYR_SDK_INSTALL_DIR not set, using $SDK_PATH"
+	export ZEPHYR_SDK_INSTALL_DIR=${SDK_PATH}
+fi
 
 if [[ $# -eq 0 ]]; then
-board=arduino_giga_r1//m7
-variant=arduino_giga_r1_m7
+    board=arduino_giga_r1//m7
+else
+    board=$1
+    shift
 fi
 
 source venv/bin/activate
 
-if [ "$third_arg" != "" ]; then
-    extra_args="--shield $third_arg"
-fi
+ZEPHYR_BASE=$(west topdir)/zephyr
 
-(west build loader -b $board -p $extra_args && west build -t llext-edk)
-(tar xfp build/zephyr/llext-edk.tar.xz --directory variants/$variant/)
+# Get the variant name (NORMALIZED_BOARD_TARGET in Zephyr)
+tmpdir=$(mktemp -d)
+variant=$(cmake -DBOARD=$board -P extra/get_variant_name.cmake | grep 'VARIANT=' | cut -d '=' -f 2)
+rm -rf ${tmpdir}
 
-(cp build/zephyr/zephyr.elf firmwares/zephyr-$variant.elf)
-if [ -f build/zephyr/zephyr.bin ]; then
-    cp build/zephyr/zephyr.bin firmwares/zephyr-$variant.bin
-elif [ -f build/zephyr/zephyr.hex ]; then
-    cp build/zephyr/zephyr.hex firmwares/zephyr-$variant.hex
+if [ -z "${variant}" ] ; then
+	echo "Failed to get variant name from '$board'"
+	exit 1
 fi
 
+echo && echo && echo
+echo ${variant}
+echo ${variant} | sed -e 's/./=/g'
+echo
+
+# Build the loader
+BUILD_DIR=build/${variant}
+VARIANT_DIR=variants/${variant}
+rm -rf ${BUILD_DIR}
+west build -d ${BUILD_DIR} -b ${board} loader -t llext-edk $*
+
+# Extract the generated EDK tarball and copy it to the variant directory
+mkdir -p ${VARIANT_DIR} firmwares
+(set -e ; cd ${BUILD_DIR} && rm -rf llext-edk && tar xf zephyr/llext-edk.tar.Z)
+rsync -a --delete ${BUILD_DIR}/llext-edk ${VARIANT_DIR}/
+
+# remove all inline comments in macro definitions
+# (especially from devicetree_generated.h and sys/util_internal.h)
+line_preproc_ok='^\s*#\s*(if|else|elif|endif)' # match conditional preproc lines
+line_comment_only='^\s*\/\*' # match lines starting with comment
+line_continuation='\\$' # match lines ending with '\'
+c_comment='\s*\/\*.*?\*\/' # match C-style comments and any preceding space
+perl -i -pe "s/${c_comment}//gs unless /${line_preproc_ok}/ || (/${line_comment_only}/ && !/${line_continuation}/)" $(find ${VARIANT_DIR}/llext-edk/include/ -type f)
+for ext in elf bin hex; do
+    rm -f firmwares/zephyr-$variant.$ext
+    if [ -f ${BUILD_DIR}/zephyr/zephyr.$ext ]; then
+        cp ${BUILD_DIR}/zephyr/zephyr.$ext firmwares/zephyr-$variant.$ext
+    fi
+done
+
 # Generate the provides.ld file for linked builds
 echo "Exporting provides.ld"
 READELF=${ZEPHYR_SDK_INSTALL_DIR}/arm-zephyr-eabi/bin/arm-zephyr-eabi-readelf
-$READELF --wide -s build/zephyr/zephyr.elf  | c++filt  | grep FUNC | awk -F' ' '{print "PROVIDE("$8" = 0x"$2");"}' > variants/$variant/provides.ld
-$READELF --wide -s build/zephyr/zephyr.elf  | c++filt  | grep kheap_llext_heap | awk -F' ' '{print "PROVIDE("$8" = 0x"$2");"}' >> variants/$variant/provides.ld
-$READELF --wide -s build/zephyr/zephyr.elf  | c++filt  | grep kheap_llext_heap | awk -F' ' '{print "PROVIDE(kheap_llext_heap_size = "$3");"}' >> variants/$variant/provides.ld
-$READELF --wide -s build/zephyr/zephyr.elf  | c++filt  | grep kheap__system_heap | awk -F' ' '{print "PROVIDE("$8" = 0x"$2");"}' >> variants/$variant/provides.ld
-$READELF --wide -s build/zephyr/zephyr.elf  | c++filt  | grep kheap__system_heap | awk -F' ' '{print "PROVIDE(kheap__system_heap_size = "$3");"}' >> variants/$variant/provides.ld
-cat build/zephyr/zephyr.map | grep __device_dts_ord | grep -v rodata | grep -v llext_const_symbol |  awk -F' ' '{print "PROVIDE("$2" = "$1");"}'  >> variants/$variant/provides.ld
-TEXT_START=`cat loader/boards/$variant.overlay | grep user_sketch: | cut -f2 -d"@" | cut -f1 -d"{"`
-echo "PROVIDE(_sketch_start = 0x$TEXT_START);" >> variants/$variant/provides.ld
-
-sed -i 's/PROVIDE(malloc =/PROVIDE(__wrap_malloc =/g' variants/$variant/provides.ld
-sed -i 's/PROVIDE(free =/PROVIDE(__wrap_free =/g' variants/$variant/provides.ld
-sed -i 's/PROVIDE(realloc =/PROVIDE(__wrap_realloc =/g' variants/$variant/provides.ld
-sed -i 's/PROVIDE(calloc =/PROVIDE(__wrap_calloc =/g' variants/$variant/provides.ld
-sed -i 's/PROVIDE(random =/PROVIDE(__wrap_random =/g' variants/$variant/provides.ld
+$READELF --wide -s ${BUILD_DIR}/zephyr/zephyr.elf  | c++filt  | grep FUNC | awk -F' ' '{print "PROVIDE("$8" = 0x"$2");"}' > ${VARIANT_DIR}/provides.ld
+$READELF --wide -s ${BUILD_DIR}/zephyr/zephyr.elf  | c++filt  | grep kheap_llext_heap | awk -F' ' '{print "PROVIDE("$8" = 0x"$2");"}' >> ${VARIANT_DIR}/provides.ld
+$READELF --wide -s ${BUILD_DIR}/zephyr/zephyr.elf  | c++filt  | grep kheap_llext_heap | awk -F' ' '{print "PROVIDE(kheap_llext_heap_size = "$3");"}' >> ${VARIANT_DIR}/provides.ld
+$READELF --wide -s ${BUILD_DIR}/zephyr/zephyr.elf  | c++filt  | grep kheap__system_heap | awk -F' ' '{print "PROVIDE("$8" = 0x"$2");"}' >> ${VARIANT_DIR}/provides.ld
+$READELF --wide -s ${BUILD_DIR}/zephyr/zephyr.elf  | c++filt  | grep kheap__system_heap | awk -F' ' '{print "PROVIDE(kheap__system_heap_size = "$3");"}' >> ${VARIANT_DIR}/provides.ld
+cat ${BUILD_DIR}/zephyr/zephyr.map | grep __device_dts_ord | grep -v rodata | grep -v llext_const_symbol |  awk -F' ' '{print "PROVIDE("$2" = "$1");"}'  >> ${VARIANT_DIR}/provides.ld
+TEXT_START=`cat variants/$variant/$variant.overlay | grep user_sketch: | cut -f2 -d"@" | cut -f1 -d"{"`
+echo "PROVIDE(_sketch_start = 0x$TEXT_START);" >> ${VARIANT_DIR}/provides.ld
+
+sed -i 's/PROVIDE(malloc =/PROVIDE(__wrap_malloc =/g' ${VARIANT_DIR}/provides.ld
+sed -i 's/PROVIDE(free =/PROVIDE(__wrap_free =/g' ${VARIANT_DIR}/provides.ld
+sed -i 's/PROVIDE(realloc =/PROVIDE(__wrap_realloc =/g' ${VARIANT_DIR}/provides.ld
+sed -i 's/PROVIDE(calloc =/PROVIDE(__wrap_calloc =/g' ${VARIANT_DIR}/provides.ld
+sed -i 's/PROVIDE(random =/PROVIDE(__wrap_random =/g' ${VARIANT_DIR}/provides.ld
+
+cmake -P extra/gen_arduino_files.cmake $variant

extra/build_all.sh

@@ -2,10 +2,11 @@
 
 set -e
 
-./extra/build.sh arduino_giga_r1//m7 arduino_giga_r1_m7 giga_display_shield
-./extra/build.sh arduino_nano_33_ble//sense arduino_nano_33_ble_sense
-./extra/build.sh arduino_portenta_h7//m7 arduino_portenta_h7
-./extra/build.sh ek_ra8d1 ek_ra8d1
-./extra/build.sh frdm_mcxn947/mcxn947/cpu0 frdm_mcxn947_mcxn947_cpu0
-./extra/build.sh frdm_rw612 frdm_rw612
-./extra/build.sh arduino_portenta_c33 arduino_portenta_c33
+./extra/build.sh arduino_giga_r1//m7 --shield giga_display_shield
+./extra/build.sh arduino_nano_33_ble//sense
+./extra/build.sh arduino_nicla_sense_me
+./extra/build.sh arduino_portenta_c33
+./extra/build.sh [email protected]//m7
+./extra/build.sh ek_ra8d1
+./extra/build.sh frdm_mcxn947/mcxn947/cpu0
+./extra/build.sh frdm_rw612

extra/gen_arduino_files.cmake

@@ -0,0 +1,61 @@
+# get root dir for the project
+cmake_path(SET TOP_DIR NORMALIZE ${CMAKE_CURRENT_LIST_DIR}/..)
+
+# get list of variants to be applied
+if(CMAKE_ARGC GREATER 3)
+	# cmake -P <script> <variant> ...
+	foreach(index RANGE 4 ${CMAKE_ARGC})
+		math(EXPR index "${index} - 1")
+		list(APPEND VARIANTS "${CMAKE_ARGV${index}}")
+	endforeach()
+	list(TRANSFORM VARIANTS REPLACE "/$" "")
+	list(TRANSFORM VARIANTS REPLACE ".*/" "")
+else()
+	# build for all valid variants
+	file(GLOB VARIANTS RELATIVE ${TOP_DIR}/variants variants/*)
+	list(REMOVE_ITEM VARIANTS llext linked)
+endif()
+
+foreach(variant ${VARIANTS})
+	if(NOT IS_DIRECTORY variants/${variant})
+		continue()
+	endif()
+
+	cmake_path(SET dir ${TOP_DIR}/variants/${variant})
+	if(NOT EXISTS ${dir}/llext-edk/cmake.cflags)
+		continue()
+	endif()
+
+	message(STATUS "Processing ${variant}")
+	include(${dir}/llext-edk/cmake.cflags)
+
+	list(TRANSFORM LLEXT_ALL_INCLUDE_CFLAGS REPLACE "-I${dir}" "-iwithprefixbefore")
+	list(JOIN LLEXT_ALL_INCLUDE_CFLAGS "\n" EDK_INCLUDES)
+	file(WRITE ${dir}/includes.txt "${EDK_INCLUDES}")
+
+	# exclude -imacros entries in platform from the list, make sure no others are present
+	list(FILTER LLEXT_BASE_CFLAGS EXCLUDE REGEX "-imacros.*autoconf.h")
+	list(FILTER LLEXT_BASE_CFLAGS EXCLUDE REGEX "-imacros.*zephyr_stdint.h")
+	set(other_imacros "${LLEXT_BASE_CFLAGS}")
+	list(FILTER other_imacros INCLUDE REGEX "-imacros.*")
+	if(other_imacros)
+		message(FATAL_ERROR "Unexpected -imacros in LLEXT_BASE_CFLAGS: ${other_imacros}")
+	endif()
+
+	# exclude other problematic macros shared between C and C++
+	list(FILTER LLEXT_BASE_CFLAGS EXCLUDE REGEX "-fdiagnostics-color=always")
+
+	# (temp) generate C++ flags from C flags
+	set(LLEXT_BASE_CXXFLAGS ${LLEXT_BASE_CFLAGS})
+	list(FILTER LLEXT_BASE_CXXFLAGS EXCLUDE REGEX "-Wno-pointer-sign")
+	list(FILTER LLEXT_BASE_CXXFLAGS EXCLUDE REGEX "-Werror=implicit-int")
+	list(FILTER LLEXT_BASE_CXXFLAGS EXCLUDE REGEX "-std=c.*")
+
+	# save flag files
+	list(JOIN LLEXT_BASE_CFLAGS "\n" EDK_CFLAGS)
+	file(WRITE ${dir}/cflags.txt "${EDK_CFLAGS}")
+
+
+	list(JOIN LLEXT_BASE_CXXFLAGS "\n" EDK_CXXFLAGS)
+	file(WRITE ${dir}/cxxflags.txt "${EDK_CXXFLAGS}")
+endforeach()

extra/get_variant_name.cmake

@@ -0,0 +1,11 @@
+# Copyright (C) 2025 Arduino SA
+# SPDX-License-Identifier: Apache-2.0
+
+#
+# Generate NORMALIZED_BOARD_TARGET from BOARD via the Zephyr build system
+#
+
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE} COMPONENTS yaml boards)
+message(STATUS "VARIANT=${NORMALIZED_BOARD_TARGET}")

extra/post_build_tool/main.go

@@ -9,7 +9,7 @@ import (
 )
 
 func main() {
-	var output = flag.String("output", "", "Output to a specific file (default: add .dfu suffix)")
+	var output = flag.String("output", "", "Output to a specific file (default: add -zsk.bin suffix)")
 	var debug = flag.Bool("debug", false, "Enable debugging mode")
 	var linked = flag.Bool("prelinked", false, "Provided file has already been linked to Zephyr")
 	var force = flag.Bool("force", false, "Ignore safety checks and overwrite the header")
@@ -85,7 +85,7 @@ func main() {
 	// Create a new filename for the copy
 	newFilename := *output
 	if newFilename == "" {
-		newFilename = filename + ".dfu"
+		newFilename = filename + "-zsk.bin"
 	}
 
 	// Write the new content to the new file