FORMATTER = clang-format -i
ROOT_FILE_NAME = blink
SRC_FILE = $(ROOT_FILE_NAME).c
OBJ_FILE = $(ROOT_FILE_NAME).o
EXE_FILE = $(ROOT_FILE_NAME)
HEX_FILE = $(ROOT_FILE_NAME).hex

default:
    @echo 'Targets:'
    @echo '  compile'
    @echo '  link'
    @echo '  hex'
    @echo '  upload'
    @echo '  format'
    @echo '  clean'

$(OBJ_FILE): $(SRC_FILE)
    avr-gcc -Os -DF_CPU=16000000UL -mmcu=atmega328p -c -o $(OBJ_FILE) $(SRC_FILE)

compile: $(OBJ_FILE)

$(EXE_FILE): $(OBJ_FILE)
    avr-gcc -mmcu=atmega328p $(OBJ_FILE) -o $(EXE_FILE)

link: $(EXE_FILE)

$(HEX_FILE): $(EXE_FILE)
    avr-objcopy -O ihex -R .eeprom $(EXE_FILE) $(HEX_FILE)

hex: $(HEX_FILE)

upload: $(HEX_FILE)
    avrdude -F -V -c arduino -p ATMEGA328P -P /dev/ttyACM0 -b 115200 -U flash:w:$(HEX_FILE)

format:
    $(FORMATTER) $(SRC_FILE)

clean:
    -rm -f $(OBJ_FILE) $(EXE_FILE) $(HEX_FILE) $(SRC_FILE).orig