cmake_minimum_required(VERSION 3.10)

project(lpc54102_hello)

enable_language(CXX)
enable_language(ASM)

# Different linker scripts
set(TARGET_LDSCRIPT_FLASH "${CMAKE_SOURCE_DIR}/SDK/devices/LPC54102/gcc/LPC54102J512_cm4_flash.ld")
set(TARGET_LDSCRIPT_RAM   "${CMAKE_SOURCE_DIR}/SDK/devices/LPC54102/gcc/LPC54102J512_cm4_ram.ld")

set(TARGET_SOURCES
    "SDK/components/serial_manager/serial_manager.c"
    "SDK/components/serial_manager/serial_port_uart.c"
    "SDK/components/uart/vusart_adapter.c"
    "SDK/devices/LPC54102/drivers/fsl_adc.c"
    "SDK/devices/LPC54102/drivers/fsl_clock.c"
    "SDK/devices/LPC54102/drivers/fsl_common.c"
    "SDK/devices/LPC54102/drivers/fsl_crc.c"
    "SDK/devices/LPC54102/drivers/fsl_ctimer.c"
    "SDK/devices/LPC54102/drivers/fsl_dma.c"
    "SDK/devices/LPC54102/drivers/fsl_flashiap.c"
    "SDK/devices/LPC54102/drivers/fsl_fmeas.c"
    "SDK/devices/LPC54102/drivers/fsl_gint.c"
    "SDK/devices/LPC54102/drivers/fsl_gpio.c"
    "SDK/devices/LPC54102/drivers/fsl_i2c.c"
    "SDK/devices/LPC54102/drivers/fsl_i2c_dma.c"
    "SDK/devices/LPC54102/drivers/fsl_iap.c"
    "SDK/devices/LPC54102/drivers/fsl_inputmux.c"
    "SDK/devices/LPC54102/drivers/fsl_mrt.c"
    "SDK/devices/LPC54102/drivers/fsl_pint.c"
    "SDK/devices/LPC54102/drivers/fsl_power.c"
    "SDK/devices/LPC54102/drivers/fsl_reset.c"
    "SDK/devices/LPC54102/drivers/fsl_rit.c"
    "SDK/devices/LPC54102/drivers/fsl_rtc.c"
    "SDK/devices/LPC54102/drivers/fsl_sctimer.c"
    "SDK/devices/LPC54102/drivers/fsl_spi.c"
    "SDK/devices/LPC54102/drivers/fsl_spi_dma.c"
    "SDK/devices/LPC54102/drivers/fsl_usart.c"
    "SDK/devices/LPC54102/drivers/fsl_usart_dma.c"
    "SDK/devices/LPC54102/drivers/fsl_utick.c"
    "SDK/devices/LPC54102/drivers/fsl_wwdt.c"
    "SDK/devices/LPC54102/gcc/startup_LPC54102_cm4.S"
    "SDK/devices/LPC54102/system_LPC54102_cm4.c"
    "SDK/devices/LPC54102/utilities/debug_console/fsl_debug_console.c"
    "SDK/devices/LPC54102/utilities/fsl_assert.c"
    "SDK/devices/LPC54102/utilities/fsl_notifier.c"
    "SDK/devices/LPC54102/utilities/fsl_sbrk.c"
    "SDK/devices/LPC54102/utilities/str/fsl_str.c"
    "board/board.c"
    "board/clock_config.c"
    "board/peripherals.c"
    "board/pin_mux.c"
    "src/main.c"
    "src/pah8001_impl.c"
)

set(TARGET_C_DEFINES
    "CPU_LPC54102J256BD64"
    "CPU_LPC54102J512BD64_cm4"
    "MCUXPRESSO_SDK"
    "SERIAL_PORT_TYPE_UART=1"
    "__STARTUP_CLEAR_BSS"
)

set(TARGET_C_INCLUDES
    "SDK/CMSIS/Include"
    "SDK/components/serial_manager"
    "SDK/components/uart"
    "SDK/devices/LPC54102"
    "SDK/devices/LPC54102/drivers"
    "SDK/devices/LPC54102/utilities/debug_console"
    "SDK/devices/LPC54102/utilities/str"
    "board"
    "include"
)

# Shared libraries linked with application
set(TARGET_LIBS
    "power_cm4_hardabi"
    "pah8001"
)

# Shared library and linker script search paths
set(TARGET_LIB_DIRECTORIES
    "SDK/devices/LPC54102/gcc"
)

# 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          "${CMAKE_C_FLAGS} -Wall -fno-common -fno-builtin -ffreestanding -fdata-sections -ffunction-sections")
set(CMAKE_CXX_FLAGS        "${CMAKE_CXX_FLAGS} -Wall -fno-common -fno-builtin -ffreestanding -fdata-sections -ffunction-sections")
set(CMAKE_ASM_FLAGS        "${CMAKE_C_FLAGS} -x assembler-with-cpp")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gc-sections")

add_subdirectory(lib/pixart_pah8001ei)

# 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

# Create ELF
add_executable("${CMAKE_PROJECT_NAME}_FLASH.elf" ${TARGET_SOURCES})
target_compile_definitions("${CMAKE_PROJECT_NAME}_FLASH.elf"
    PRIVATE ${TARGET_C_DEFINES_XIP}
)
target_link_options("${CMAKE_PROJECT_NAME}_FLASH.elf"
    PRIVATE "-T${TARGET_LDSCRIPT_FLASH}"
    PRIVATE "-Wl,--Map=${CMAKE_PROJECT_NAME}_FLASH.map"
)
set_property(TARGET "${CMAKE_PROJECT_NAME}_FLASH.elf" APPEND
    PROPERTY ADDITIONAL_CLEAN_FILES "${CMAKE_PROJECT_NAME}_FLASH.map"
)
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")
if(DEFINED TARGET_TOOLCHAIN_SIZE)
    add_custom_command(TARGET "${CMAKE_PROJECT_NAME}_FLASH.elf" POST_BUILD
        COMMAND ${TARGET_TOOLCHAIN_SIZE} "${CMAKE_PROJECT_NAME}_FLASH.elf"
    )
endif()


# Create ELF
add_executable("${CMAKE_PROJECT_NAME}_RAM.elf" ${TARGET_SOURCES})
target_link_options("${CMAKE_PROJECT_NAME}_RAM.elf"
    PRIVATE "-T${TARGET_LDSCRIPT_RAM}"
    PRIVATE "-Wl,--Map=${CMAKE_PROJECT_NAME}_RAM.map"
)
set_property(TARGET "${CMAKE_PROJECT_NAME}_RAM.elf" APPEND
    PROPERTY ADDITIONAL_CLEAN_FILES "${CMAKE_PROJECT_NAME}_RAM.map"
)
add_custom_command(OUTPUT "${CMAKE_PROJECT_NAME}_RAM.hex"
    COMMAND ${CMAKE_OBJCOPY} "-O" "ihex" "${CMAKE_PROJECT_NAME}_RAM.elf" "${CMAKE_PROJECT_NAME}_RAM.hex"
    DEPENDS "${CMAKE_PROJECT_NAME}_RAM.elf"
)
add_custom_target("${CMAKE_PROJECT_NAME}_RAM_HEX" DEPENDS "${CMAKE_PROJECT_NAME}_RAM.hex")
if(DEFINED TARGET_TOOLCHAIN_SIZE)
    add_custom_command(TARGET "${CMAKE_PROJECT_NAME}_RAM.elf" POST_BUILD
        COMMAND ${TARGET_TOOLCHAIN_SIZE} "${CMAKE_PROJECT_NAME}_RAM.elf"
    )
endif()