PROJECT(STM32F40G_EVAL LANGUAGES C CXX)

set(CMAKE_BUILD_TYPE Debug)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON )
CMAKE_MINIMUM_REQUIRED(VERSION 3.3)
ENABLE_LANGUAGE(ASM)

SET(TARGET stm32f4HAL)
ADD_DEFINITIONS(-DDEBUG_UART_HANDLE=UartHandle)

# Remove -rdynamic option from linking that is not supported by arm-none-eabi
# Also remove "undefined reference to `_sbrk'" error
set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "-specs=nano.specs -specs=nosys.specs")
set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS ${CMAKE_SHARED_LIBRARY_LINK_C_FLAGS})
SET(CMAKE_C_FLAGS "-mcpu=cortex-m4 -mthumb -mfloat-abi=softfp -Wall -mfpu=fpv4-sp-d16 -Wl,-Map=output.map -Wl,--gc-sections -g3")

set(STM32_CHIP STM32F407IGH6)
set(STM_BOARD STM324xG_EVAL)
set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
set(CMAKE_TOOLCHAIN_FILE ${CMAKE_MODULE_PATH}/gcc_stm32.cmake)
include(${CMAKE_TOOLCHAIN_FILE})

FIND_PACKAGE(Git REQUIRED)

set(CUBE_SOURCE "${CMAKE_BINARY_DIR}/STM32F4-Cube-Firmware")
if(EXISTS ${CUBE_SOURCE})
    message("Cube FW directory exists")
else()
    message("Getting Cube Firmware")
    set(GIT_REPOSITORY "https://github.com/alxhoff/STM32F4-Cube-Firmware.git")
    execute_process(COMMAND ${GIT_EXECUTABLE} clone ${GIT_REPOSITORY} )
endif()

set(STM32Cube_DIR ${CUBE_SOURCE})

FIND_PACKAGE(TFLite REQUIRED)

SET(TFLITE_PLATFORM micro)

set(STM32Cube_DIR ${CUBE_SOURCE})

SET(FREERTOS_HEAP_IMPL 1)

FIND_PACKAGE(FreeRTOS REQUIRED)
FIND_PACKAGE(CMSIS REQUIRED)
FIND_PACKAGE(STM32HAL COMPONENTS sram gpio uart REQUIRED)
FIND_PACKAGE(STM32LL COMPONENTS fsmc sdmmc REQUIRED)
FIND_PACKAGE(STM32BSP COMPONENTS sd sram ts io lcd ili9325 stmpe811 REQUIRED)

INCLUDE_DIRECTORIES(
    ${CMAKE_CURRENT_SOURCE_DIR}
    "${PROJECT_SOURCE_DIR}/Inc"
    ${STM32HAL_INCLUDE_DIR}
    ${STM32LL_INCLUDE_DIR}
    ${CMSIS_INCLUDE_DIRS}
    ${FreeRTOS_INCLUDE_DIRS}
    ${STM32BSP_INCLUDE_DIR}
    ${TFLite_INCLUDE_DIRS}
    )

file(GLOB PROJECT_SOURCES
    "Src/*.c"
    "Src/*.cc"
    "Src/*.cpp"
    )

SET(STM32_LINKER_SCRIPT ${CMSIS_LINKER_SCRIPT})

ADD_EXECUTABLE(
    ${CMAKE_PROJECT_NAME}.elf
    ${PROJECT_SOURCES}
    ${STM32HAL_SOURCES}
    ${STM32BSP_SOURCES}
    ${STM32LL_SOURCES}
    ${FreeRTOS_SOURCES}
    ${TFLite_SOURCES}
    ${CMSIS_SOURCES}
    )

TARGET_COMPILE_DEFINITIONS(${CMAKE_PROJECT_NAME}.elf PUBLIC STM_BSP)

ADD_CUSTOM_TARGET(
    flash
    COMMAND ${CMAKE_OBJCOPY} -Obinary ${CMAKE_PROJECT_NAME}.elf ${CMAKE_PROJECT_NAME}.bin # TODO
    COMMAND st-flash write ${CMAKE_PROJECT_NAME}.bin 0x8000000
    )

ADD_DEPENDENCIES(flash ${CMAKE_PROJECT_NAME}.elf)

IF(NOT OPENOCD_BOARD)
    FILE(GLOB OPENOCD_BOARD ${PROJECT_SOURCE_DIR}/*.cfg)
ENDIF()

ADD_CUSTOM_TARGET(
    debug
    COMMAND openocd -f ${OPENOCD_BOARD} >/dev/null 2>&1 & sleep 2
    COMMAND ${TARGET_TRIPLET}-gdb -quiet -tui -command=${CMAKE_CURRENT_LIST_DIR}/GDBCommands -se ${CMAKE_BINARY_DIR}/${CMAKE_PROJECT_NAME}.elf
    COMMAND killall -15 openocd
    )

ADD_DEPENDENCIES(debug flash)

STM32_SET_TARGET_PROPERTIES(${CMAKE_PROJECT_NAME}.elf)
STM32_ADD_HEX_BIN_TARGETS(${CMAKE_PROJECT_NAME}.elf)
STM32_PRINT_SIZE_OF_TARGETS(${CMAKE_PROJECT_NAME}.elf)

# TODO: also clean .bin file on `make clean`