cmake_minimum_required(VERSION 3.10)

project(NUC200_Template)

enable_language(CXX)
enable_language(ASM)

# Extra CFlags
set(TARGET_CFLAGS_EXTRA   "")
set(TARGET_CXXFLAGS_EXTRA "")
set(TARGET_LDFLAGS_EXTRA  "-Wl,--print-memory-usage")

# Different linker scripts
set(TARGET_LDSCRIPT_FLASH "${CMAKE_SOURCE_DIR}/BSP/Device/Nuvoton/NUC200Series/Source/GCC/gcc_arm.ld")

# Copy them from Makefile
set(TARGET_C_SOURCES
    # "BSP/Device/Nuvoton/NUC200Series/Source/GCC/_syscalls.c" # Not used
    "BSP/Device/Nuvoton/NUC200Series/Source/system_NUC200Series.c"
    "BSP/StdDriver/src/acmp.c"
    "BSP/StdDriver/src/adc.c"
    "BSP/StdDriver/src/clk.c"
    "BSP/StdDriver/src/crc.c"
    "BSP/StdDriver/src/fmc.c"
    "BSP/StdDriver/src/gpio.c"
    "BSP/StdDriver/src/i2c.c"
    "BSP/StdDriver/src/i2s.c"
    "BSP/StdDriver/src/pdma.c"
    "BSP/StdDriver/src/ps2.c"
    "BSP/StdDriver/src/pwm.c"
    # "BSP/StdDriver/src/retarget.c" # Low quality code.
    "BSP/StdDriver/src/rtc.c"
    "BSP/StdDriver/src/sc.c"
    "BSP/StdDriver/src/spi.c"
    "BSP/StdDriver/src/sys.c"
    "BSP/StdDriver/src/timer.c"
    "BSP/StdDriver/src/uart.c"
    "BSP/StdDriver/src/usbd.c"
    "BSP/StdDriver/src/wdt.c"
    "BSP/StdDriver/src/wwdt.c"
    "src/main.c"
)

# Copy them from Makefile
set(TARGET_ASM_SOURCES
    "BSP/Device/Nuvoton/NUC200Series/Source/GCC/startup_NUC200Series.S"
)

# Copy them from Makefile
set(TARGET_C_DEFINES
)

# Copy them from Makefile
set(TARGET_C_INCLUDES
    "BSP/CMSIS/Include"
    "BSP/Device/Nuvoton/NUC200Series/Include"
    "BSP/SmartcardLib/Include"
    "BSP/StdDriver/inc"
)

# Shared libraries linked with application
set(TARGET_LIBS
    "smartcard"
)

# Shared library and linker script search paths
set(TARGET_LIB_DIRECTORIES
    "BSP/SmartcardLib"
)

# Device specific settings, goes to CFLAGS and LDFLAGS
set(TARGET_CFLAGS_HARDWARE "-mcpu=cortex-m0 -mthumb")

# Conditional flags
# DEBUG
set(CMAKE_C_FLAGS_DEBUG     "-DDEBUG -Og -g")
set(CMAKE_CXX_FLAGS_DEBUG   "-DDEBUG -Og -g")
set(CMAKE_ASM_FLAGS_DEBUG   "-DDEBUG -Og -g")

# RELEASE
set(CMAKE_C_FLAGS_RELEASE        "-DNDEBUG -O2 -flto")
set(CMAKE_CXX_FLAGS_RELEASE      "-DNDEBUG -O2 -flto")
set(CMAKE_ASM_FLAGS_RELEASE      "-DNDEBUG -O2 -flto")
set(CMAKE_EXE_LINKER_FLAGS_RELEASE "-flto")

# Final compiler flags
set(CMAKE_C_FLAGS          "${CMAKE_C_FLAGS} ${TARGET_CFLAGS_HARDWARE} ${TARGET_CFLAGS_EXTRA} -Wall -fdata-sections -ffunction-sections")
set(CMAKE_CXX_FLAGS        "${CMAKE_CXX_FLAGS} ${TARGET_CFLAGS_HARDWARE} ${TARGET_CXXFLAGS_EXTRA} -Wall -fdata-sections -ffunction-sections")
set(CMAKE_ASM_FLAGS        "${CMAKE_ASM_FLAGS} ${CMAKE_C_FLAGS} -x assembler-with-cpp")
set(CMAKE_EXE_LINKER_FLAGS "-specs=nano.specs -Wl,--gc-sections -lc -lm -lnosys ${TARGET_LDFLAGS_EXTRA}")

# Include sub directories here

# Shared sources, includes and definitions
add_compile_definitions(${TARGET_C_DEFINES})
include_directories(${TARGET_C_INCLUDES})
link_directories(${TARGET_LIB_DIRECTORIES})
link_libraries(${TARGET_LIBS})

# Main targets are added here

# **** Internal Flash ****

# Create ELF
add_executable("${CMAKE_PROJECT_NAME}_FLASH.elf" ${TARGET_C_SOURCES} ${TARGET_ASM_SOURCES})
target_link_options("${CMAKE_PROJECT_NAME}_FLASH.elf"
    PRIVATE "-T${TARGET_LDSCRIPT_FLASH}"
    PRIVATE "-Wl,-Map=${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}_FLASH.map,--cref"
)

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")

# **** Cortex-M0 does not support SCB->VTOR configuration, so RAM debug is not possible. ****