NuttX - RV32 blink_leds (QEMU) example

nuttx-riscv-blink/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.14...3.30)
+
+project(blink
+    VERSION 1.0
+    DESCRIPTION "Blink on NuttX"
+    LANGUAGES Swift
+)
+
+if("${CMAKE_Swift_COMPILER_VERSION}" VERSION_LESS 6.0)
+    message(FATAL_ERROR "Swift 6.0 or later is required")
+endif()
+
+if(POLICY CMP0169)
+    # allow to call FetchContent_Populate directly
+    cmake_policy(SET CMP0169 OLD)
+endif()
+
+option(LIST_ALL_BOARDS "List all available boards" OFF)
+option(ENABLE_NUTTX_TRACE "Enable NuttX trace" OFF)
+
+if(ENABLE_NUTTX_TRACE)
+    set(TRACEFLAG "--trace")
+else()
+    set(TRACEFLAG "")
+endif()
+
+set(FETCHCONTENT_QUIET FALSE)
+include(FetchContent)
+FetchContent_Declare(
+    apps
+    GIT_REPOSITORY https://github.com/apache/nuttx-apps.git
+    GIT_TAG nuttx-12.7.0-RC0
+    SOURCE_DIR ${CMAKE_BINARY_DIR}/apps
+    FIND_PACKAGE_ARGS
+)
+FetchContent_GetProperties(apps)
+if(NOT apps_POPULATED)
+    FetchContent_Populate(apps)
+endif()
+
+FetchContent_Declare(
+    nuttx
+    GIT_REPOSITORY https://github.com/apache/nuttx.git
+    GIT_TAG nuttx-12.7.0-RC0
+    SOURCE_DIR ${CMAKE_BINARY_DIR}/nuttx
+    FIND_PACKAGE_ARGS
+)
+FetchContent_GetProperties(nuttx)
+if(NOT nuttx_POPULATED)
+    FetchContent_Populate(nuttx)
+endif()
+
+
+if(NOT "${nuttx_SOURCE_DIR}" STREQUAL "")
+    list(APPEND CMAKE_MODULE_PATH ${apps_SOURCE_DIR}/cmake)
+    list(APPEND CMAKE_MODULE_PATH ${nuttx_SOURCE_DIR}/cmake)
+endif()
+
+if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
+    set(SCRIPT_SUFFIX .bat)
+else()
+    set(SCRIPT_SUFFIX .sh)
+endif()
+
+if(LIST_ALL_BOARDS)
+    execute_process(
+        COMMAND ${CMAKE_COMMAND} -E chdir ${nuttx_SOURCE_DIR}
+        ${CMAKE_COMMAND} -E env PATH=${nuttx_SOURCE_DIR}/tools:$ENV{PATH}
+        ${nuttx_SOURCE_DIR}/tools/configure${SCRIPT_SUFFIX} -L
+        RESULT_VARIABLE result
+    )
+    if(result)
+        message(FATAL_ERROR "Failed to run tools/configure")
+    endif()
+else()
+    if(NOT DEFINED BOARD_CONFIG)
+        message(FATAL_ERROR "Please define configuration with BOARD_CONFIG")
+    else()
+        message(STATUS "BOARD_CONFIG: ${BOARD_CONFIG}")
+    endif()
+
+    # Send swift-blinky example to nuttx-apps path
+    file(COPY ${CMAKE_SOURCE_DIR}/leds_swift DESTINATION ${apps_SOURCE_DIR}/examples)
+    file(COPY ${CMAKE_SOURCE_DIR}/defconfig DESTINATION ${nuttx_SOURCE_DIR}/boards/risc-v/qemu-rv/rv-virt/configs/leds_swift)
+
+    add_custom_target(distclean
+        COMMAND ${CMAKE_COMMAND} -E chdir ${nuttx_SOURCE_DIR}
+        ${CMAKE_COMMAND} -E env PATH=${nuttx_SOURCE_DIR}/tools:$ENV{PATH}
+        make distclean
+        COMMENT "Clean NuttX"
+    )
+
+    execute_process(
+        COMMAND ${CMAKE_COMMAND} -E chdir ${nuttx_SOURCE_DIR}
+        ${CMAKE_COMMAND} -E env PATH=${nuttx_SOURCE_DIR}/tools:$ENV{PATH}
+        ${nuttx_SOURCE_DIR}/tools/configure${SCRIPT_SUFFIX} -l ${BOARD_CONFIG}
+        RESULT_VARIABLE result
+    )
+    if(result)
+        message(FATAL_ERROR "Failed to run tools/configure")
+    endif()
+
+    add_custom_target(copy_swift_example
+        COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_SOURCE_DIR}/leds_swift ${apps_SOURCE_DIR}/examples/leds_swift
+        COMMENT "Copying leds_swift example to nuttx-apps"
+    )
+
+    add_custom_target(build_nuttx ALL
+        COMMAND ${CMAKE_COMMAND} -E chdir ${nuttx_SOURCE_DIR}
+        ${CMAKE_COMMAND} -E env PATH=${nuttx_SOURCE_DIR}/tools:$ENV{PATH}
+        make ${TRACEFLAG} -j ${JOB_POOLS}
+        DEPENDS copy_swift_example
+        COMMENT "Building NuttX"
+    )
+
+    add_custom_command(
+        TARGET build_nuttx
+        POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy ${nuttx_SOURCE_DIR}/nuttx ${CMAKE_BINARY_DIR}/nuttx.elf
+    )
+
+    add_custom_target(export_nuttx
+        COMMAND ${CMAKE_COMMAND} -E chdir ${nuttx_SOURCE_DIR}
+        ${CMAKE_COMMAND} -E env PATH=${nuttx_SOURCE_DIR}/tools:$ENV{PATH}
+        make export
+        COMMENT "Exporting NuttX"
+    )
+
+    add_custom_target(extract_nuttx_export
+        COMMAND ${CMAKE_COMMAND} -E tar xzf ${nuttx_SOURCE_DIR}/nuttx-export-12.7.0.tar.gz
+        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+        COMMAND ${CMAKE_COMMAND} -E remove ${nuttx_SOURCE_DIR}/nuttx-export-12.7.0.tar.gz
+        DEPENDS export_nuttx
+        COMMENT "Extracting NuttX export"
+    )
+
+    add_custom_target(nuttx-libs
+        DEPENDS build_nuttx export_nuttx extract_nuttx_export
+    )
+endif()

nuttx-riscv-blink/README.md

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+# Swift 6 on NuttX RTOS using CMake
+
+## Description
+
+Run blink rv32-blink_leds (QEMU) example on NuttX RTOS.
+
+> [!NOTE]
+> CMake is adapted to build NuttX and NuttX-apps (Makefiles) with Swift 6.
+
+## Requirements
+
+- [NuttX](https://github.com/apache/nuttx) & [NuttX-apps](https://github.com/apache/nuttx-apps)
+- [kconfig-frontends](https://bitbucket.org/nuttx/tools)
+- [CMake](https://cmake.org/download/)
+- [QEMU](https://www.qemu.org/)
+- [Swift 6](https://swift.org/download/)
+- [RISC-V GNU Toolchain](https://github.com/riscv-collab/riscv-gnu-toolchain/releases)
+
+## How to build
+
+```bash
+# list all supported boards
+cmake -B build -DLIST_ALL_BOARDS=ON | less
+# build configuration
+cmake -B build -GNinja -DBOARD_CONFIG=rv-virt:leds_swift -DENABLE_NUTTX_TRACE=[ON|OFF]
+# build
+cmake --build build
+# clean
+cmake --build build -t distclean
+# export NuttX as library
+cmake --build build -t nuttx-libs
+```
+
+- **Output**
+```bash
+qemu-system-riscv32 \
+    -semihosting \
+    -M virt,aclint=on \
+    -cpu rv32 -smp 8 \
+    -bios none \
+    -kernel build/nuttx.elf -nographic
+NuttShell (NSH) NuttX-12.7.0
+nsh> leds_swift
+leds_main: led_daemon started
+
+led_daemon (pid# 4): Running
+led_daemon: Opening /dev/userleds
+led_daemon: Supported LEDs 0x7
+led_daemon: LED set 0x1
+board_userled: LED 1 set to 1
+board_userled: LED 2 set to 0
+board_userled: LED 3 set to 0
+nsh> led_daemon: LED set 0x0
+board_userled: LED 1 set to 0
+board_userled: LED 2 set to 0
+board_userled: LED 3 set to 0
+led_daemon: LED set 0x1
+board_userled: LED 1 set to 1
+board_userled: LED 2 set to 0
+board_userled: LED 3 set to 0
+led_daemon: LED set 0x0
+# [...] see output in QEMU
+```
+
+Quit from QEMU: `Ctrl-a x`
+
+## References
+
+- [Nuttx - Compiling with CMake](https://nuttx.apache.org/docs/latest/quickstart/compiling_cmake.html)
+- [NuttX - C++ Example using CMake](https://nuttx.apache.org/docs/latest/guides/cpp_cmake.html)
+- [NuttX - leds_rust](https://lupyuen.github.io/articles/rust6)

nuttx-riscv-blink/defconfig

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+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_DISABLE_OS_API is not set
+# CONFIG_NSH_DISABLE_LOSMART is not set
+CONFIG_16550_ADDRWIDTH=0
+CONFIG_16550_UART0=y
+CONFIG_16550_UART0_BASE=0x10000000
+CONFIG_16550_UART0_CLOCK=3686400
+CONFIG_16550_UART0_IRQ=37
+CONFIG_16550_UART0_SERIAL_CONSOLE=y
+CONFIG_16550_UART=y
+CONFIG_ARCH="risc-v"
+CONFIG_ARCH_BOARD="rv-virt"
+CONFIG_ARCH_BOARD_QEMU_RV_VIRT=y
+CONFIG_ARCH_CHIP="qemu-rv"
+# CONFIG_ARCH_CHIP_QEMU_RV64=y
+CONFIG_ARCH_CHIP_QEMU_RV=y
+CONFIG_ARCH_CHIP_QEMU_RV_ISA_A=y
+CONFIG_ARCH_CHIP_QEMU_RV_ISA_C=y
+CONFIG_ARCH_CHIP_QEMU_RV_ISA_M=y
+CONFIG_ARCH_INTERRUPTSTACK=2048
+CONFIG_ARCH_RISCV=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BCH=y
+CONFIG_BOARDCTL_POWEROFF=y
+CONFIG_BOARD_LATE_INITIALIZE=y
+CONFIG_BOARD_LOOPSPERMSEC=6366
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_FEATURES=y
+CONFIG_DEBUG_FULLOPT=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_DEVICE_TREE=y
+CONFIG_DEV_ZERO=y
+CONFIG_ELF=y
+# CONFIG_EXAMPLES_HELLO=y
+CONFIG_EXAMPLES_LEDS=y
+CONFIG_EXAMPLES_LEDS_SWIFT=y
+CONFIG_FS_HOSTFS=y
+CONFIG_FS_PROCFS=y
+CONFIG_IDLETHREAD_STACKSIZE=2048
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INIT_STACKSIZE=3072
+CONFIG_LIBC_ENVPATH=y
+CONFIG_LIBC_EXECFUNCS=y
+CONFIG_LIBC_PERROR_STDOUT=y
+CONFIG_LIBC_STRERROR=y
+CONFIG_LIBM=y
+CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_PATH_INITIAL="/system/bin"
+CONFIG_RAM_SIZE=33554432
+CONFIG_RAM_START=0x80000000
+CONFIG_READLINE_CMD_HISTORY=y
+CONFIG_RISCV_SEMIHOSTING_HOSTFS=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_SERIAL_UART_ARCH_MMIO=y
+CONFIG_STACK_COLORATION=y
+CONFIG_START_MONTH=12
+CONFIG_START_YEAR=2021
+CONFIG_SYMTAB_ORDEREDBYNAME=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_SYSTEM_NSH_STACKSIZE=3072
+CONFIG_TESTING_GETPRIME=y
+CONFIG_TESTING_OSTEST=y
+CONFIG_USEC_PER_TICK=1000
+CONFIG_USERLED=y
+CONFIG_USERLED_LOWER=y