cmake_minimum_required(VERSION 3.10)

project(STM32F407_MRB)

enable_language(CXX)
enable_language(ASM)

# Device specific settings, goes to CFLAGS and LDFLAGS
set(CFLAGS_HARDWARE "-mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -mthumb")
# Extra CFlags
set(CFLAGS_EXTRA "-Og")
set(LDFLAGS_EXTRA "-Wl,--print-memory-usage")
# Different linker scripts
set(LDSCRIPT_FLASH "${CMAKE_SOURCE_DIR}/STM32F407ZETx_FLASH.ld")

# Copy them from Makefile
set(C_SOURCES
    "Core/Src/main.c"
    "Core/Src/stm32f4xx_it.c"
    "Core/Src/stm32f4xx_hal_msp.c"
    "Core/Src/system_stm32f4xx.c"
    "Core/Src/freertos.c"
    "Core/Src/stm32f4xx_hal_timebase_tim.c"
    "Core/Src/user_power_mgmt.c"
    "Core/Src/user_freertos_support.c"
    "Core/Src/SystemView/SEGGER_SYSVIEW_Config_FreeRTOS.c"
)
# Copy them from Makefile
set(ASM_SOURCES
    "startup_stm32f407xx.s"
)

set(C_LIBRARIES
    "rtos"
    "stm32_hal_driver"
    "printf"
    "systemview"
)

# Copy them from Makefile
set(C_DEFINES
    "STM32F407xx"
    "USE_HAL_DRIVER"
    "USE_FULL_LL_DRIVER"
)

# Copy them from Makefile
set(C_INCLUDES
    "Core/Inc"
    "Core/Inc/SystemView"
    "Drivers/STM32F4xx_HAL_Driver/Inc"
    "Drivers/STM32F4xx_HAL_Driver/Inc/Legacy"
    "Drivers/CMSIS/Device/ST/STM32F4xx/Include"
    "Drivers/CMSIS/Include"
    "Middlewares/Third_Party/FreeRTOS/Source/include"
    "Middlewares/Third_Party/FreeRTOS/Source/CMSIS_RTOS_V2"
    "Middlewares/Third_Party/FreeRTOS/Source/portable/GCC/ARM_CM4F"
    "Middlewares/Third_Party/printf"
    "Middlewares/Third_Party/SystemView_Target/SEGGER"
    "Middlewares/Third_Party/SystemView_Target/Sample/FreeRTOSV10"
)

# Final compiler flags
set(CMAKE_C_FLAGS "${CFLAGS_HARDWARE} ${CFLAGS_EXTRA} -Wall -fdata-sections -ffunction-sections")
set(CMAKE_CXX_FLAGS "${CFLAGS_HARDWARE} ${CFLAGS_EXTRA} -Wall -fdata-sections -ffunction-sections")
set(CMAKE_ASM_FLAGS "${CMAKE_C_FLAGS} -x assembler-with-cpp")
set(CMAKE_EXE_LINKER_FLAGS "${CFLAGS_HARDWARE} -specs=nano.specs -Wl,--gc-sections -lc -lm -lnosys ${LDFLAGS_EXTRA}")
add_subdirectory(Drivers)
add_subdirectory(Middlewares)

# Main targets are added here
# **** Internal Flash ****
# Create ELF
add_executable("${CMAKE_PROJECT_NAME}_FLASH.elf" ${C_SOURCES} ${ASM_SOURCES})
target_compile_definitions("${CMAKE_PROJECT_NAME}_FLASH.elf" PRIVATE ${C_DEFINES})
target_include_directories("${CMAKE_PROJECT_NAME}_FLASH.elf" PRIVATE ${C_INCLUDES})
target_link_libraries("${CMAKE_PROJECT_NAME}_FLASH.elf" ${C_LIBRARIES})
target_link_options("${CMAKE_PROJECT_NAME}_FLASH.elf"
    PRIVATE "-T${LDSCRIPT_FLASH}"
    PRIVATE "-Wl,-Map=${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}_FLASH.map,--cref"
)
target_compile_options("${CMAKE_PROJECT_NAME}_FLASH.elf"
    PRIVATE "${FINAL_C_FLAGS}"
)
add_custom_command(OUTPUT "${CMAKE_PROJECT_NAME}_FLASH.hex"
    COMMAND ${CMAKE_OBJCOPY} "-O" "ihex" "${CMAKE_PROJECT_NAME}_FLASH.elf" "${CMAKE_PROJECT_NAME}_FLASH.hex"
    DEPENDS "${CMAKE_PROJECT_NAME}_FLASH.elf"
)
add_custom_target("${CMAKE_PROJECT_NAME}_FLASH_HEX"
    DEPENDS "${CMAKE_PROJECT_NAME}_FLASH.hex"
)