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CMakeLists.txt
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CMakeLists.txt
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cmake_minimum_required(VERSION 3.12)
set(CMAKE_TOOLCHAIN_FILE cmake/arm-gcc-toolchain.cmake)
project(OpenComunicationModule)
enable_language(ASM)
set(StdPeriph_PATH "${CMAKE_SOURCE_DIR}/libs/STM32F4xx_DSP_StdPeriph_Lib_V1.8.0" CACHE PATH "path to the Standard Peripheral Library" FORCE)
set(USBLib_PATH "${CMAKE_SOURCE_DIR}/libs/STM32F4xx_USB_Lib_V2.1.0" CACHE PATH "path to the STM32 USB Library " FORCE)
function(add_flags FLAGS_VAR)
string(JOIN " " JOINED_FLAGS ${ARGN})
set("${FLAGS_VAR}" "${${FLAGS_VAR}} ${JOINED_FLAGS}" PARENT_SCOPE)
endfunction()
set(COMPILER_FLAGS
# CPU-specific
-mcpu=cortex-m4 -mlittle-endian -mthumb -mthumb-interwork
-mfloat-abi=hard -mfpu=fpv4-sp-d16
--specs=nosys.specs
)
add_flags(CMAKE_C_FLAGS ${COMPILER_FLAGS})
add_flags(CMAKE_CXX_FLAGS ${COMPILER_FLAGS})
add_flags(CMAKE_ASM_FLAGS ${COMPILER_FLAGS})
# add linker script for the target MCU
# In the nutshell, linker scripts control where (in the physical memory):
# 1. RAM, stack and flash memory begin
# 2. different sections (code, data etc) of the compiled program should be located
add_flags(CMAKE_EXE_LINKER_FLAGS "-T${StdPeriph_PATH}/Project/STM32F4xx_StdPeriph_Templates/TrueSTUDIO/STM32F40_41xxx/STM32F417IG_FLASH.ld")
# ARM GCC can generate only .elf executables...
set(ELF_EXE ${CMAKE_PROJECT_NAME}.elf)
# ...but they need to be converted into .hex files to be flashed on the MCU
set(HEX_EXE ${CMAKE_PROJECT_NAME}.hex)
set(PROJECT_SOURCE_FILES main.cpp)
list(TRANSFORM PROJECT_SOURCE_FILES PREPEND "src/iar")
set(StdPeriph_Driver_MODULES gpio rcc flash syscfg tim iwdg adc)
list(TRANSFORM StdPeriph_Driver_MODULES PREPEND "${StdPeriph_PATH}/Libraries/STM32F4xx_StdPeriph_Driver/src/stm32f4xx_")
list(TRANSFORM StdPeriph_Driver_MODULES APPEND ".c")
add_executable(${ELF_EXE}
${PROJECT_SOURCE_FILES}
${StdPeriph_Driver_MODULES}
"${StdPeriph_PATH}/Libraries/STM32F4xx_StdPeriph_Driver/src/misc.c"
# system clock configuration
"${StdPeriph_PATH}/Project/STM32F4xx_StdPeriph_Templates/system_stm32f4xx.c"
# actual entry point of the program, executed when the controller is reset or started
"${StdPeriph_PATH}/Libraries/CMSIS/Device/ST/STM32F4xx/Source/Templates/TrueSTUDIO/startup_stm32f40_41xxx.s"
)
target_include_directories(${ELF_EXE} PUBLIC
"src/iar"
"${StdPeriph_PATH}/Libraries/CMSIS/Include"
"${StdPeriph_PATH}/Libraries/CMSIS/Device/ST/STM32F4xx/Include"
"${StdPeriph_PATH}/Libraries/STM32F4xx_StdPeriph_Driver/inc"
"${StdPeriph_PATH}/Project/STM32F4xx_StdPeriph_Templates"
"${USBLib_PATH}/Libraries/STM32_USB_Device_Library/Core/inc"
"${USBLib_PATH}/Libraries/STM32_USB_OTG_Driver/inc"
)
target_compile_options(${ELF_EXE} PRIVATE -Wall)
target_compile_definitions(${ELF_EXE} PUBLIC
# enables peripheral drivers, an abstraction layer over actual hardware and
# peripheral registers (which is basically most of the SPL)
USE_STDPERIPH_DRIVER
# family of the target MCU
STM32F40_41xxx
)
add_custom_command(TARGET ${ELF_EXE} POST_BUILD
COMMAND "${CMAKE_OBJCOPY}" ARGS -O ihex ${ELF_EXE} ${HEX_EXE}
)
add_custom_target(flash
COMMAND st-flash --format ihex write ${HEX_EXE}
DEPENDS ${ELF_EXE}
)