cmake_minimum_required(VERSION 3.21)
project(sdp-dry-sensor C)


set(CMAKE_CXX_COMPILER avr-g++)
set(CMAKE_C_COMPILER avr-gcc)

set(PROGRAMMER usbasp)

add_definitions(-D'F_CPU=1000000L')

set(CMAKE_CXX_FLAGS "-fno-exceptions -fno-threadsafe-statics -fpermissive -std=gnu++11 -mmcu=attiny2313 -Os -Wall -ffunction-sections -fdata-sections -flto")
set(CMAKE_C_FLAGS "-std=gnu11 -fno-fat-lto-objects -mmcu=attiny2313 -Os -Wall -ffunction-sections -fdata-sections -flto")

add_executable(${PROJECT_NAME}.elf config.h main.c platform.c platform.h)
add_custom_command(
        TARGET ${PROJECT_NAME}.elf
        # Run after all other rules within the target have been executed
        POST_BUILD
        COMMAND avr-size -A ${PROJECT_NAME}.elf
        VERBATIM
)

add_custom_target(
        upload-flash
        # cmake -E support copy/env/echo and so on. use cmake -E to see
        # COMMAND/COMMENT must be upper case
        #COMMAND ${CMAKE_COMMAND} -E environment
        COMMAND avrdude -c usbasp -p t2313a -e -Uflash:w:${PROJECT_NAME}.elf:e

        COMMENT "Flashing ${PROJECT_NAME}.elf to flash memory"
        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}

        DEPENDS ${PROJECT_NAME}.elf
)

##########################################################################

add_executable(comparator-test.elf comparator-test.c comparator-test.c)
add_custom_command(
        TARGET comparator-test.elf
        # Run after all other rules within the target have been executed
        POST_BUILD
        COMMAND avr-size -A comparator-test.elf
        VERBATIM
)

add_custom_target(
        upload-comparator-test
        # cmake -E support copy/env/echo and so on. use cmake -E to see
        # COMMAND/COMMENT must be upper case
        #COMMAND ${CMAKE_COMMAND} -E environment
        COMMAND avrdude -c usbasp -p t2313a -e -Uflash:w:comparator-test.elf:e

        COMMENT "Flashing comparator-test.elf to flash memory"
        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}

        DEPENDS comparator-test.elf
)

# avr-objcopy -O ihex -R .eeprom build/firmware.elf build/firmware.hex
# avr-objcopy -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0 build/firmware.elf build/firmware-eeprom.hex
# avr-size -A build/firmware.elf