Makefile.common

PRG            ?= main
MACHINE        ?= uno
CSRC           = $(wildcard *.c)
COBJ           = $(patsubst %.c,%.o,$(CSRC))
C_ARDUINO      = $(wildcard $(TOP)/_arduino/*.c)
OBJ_ARDUINO    = $(patsubst %.c,%.o,$(notdir $(C_ARDUINO)))
OPTIMIZE       = -Os
LOADER         = avrdude

DEFS           ?=
LIBS           ?=

# Machine params

ifeq ($(MACHINE),mega2560)
# Arduino Mega 2560
MCU            = atmega2560
F_CPU          = 16000000UL
BAUD_RATE      = 115200
LOADERFLAGS    = -c stk500v2 -p $(MCU) -b $(BAUD_RATE) -P /dev/$(USB)
else
# Arduino Uno
MCU            = atmega328p
F_CPU          = 16000000UL
BAUD_RATE      = 115200
LOADERFLAGS    = -c arduino -p $(MCU) -b $(BAUD_RATE) -P /dev/$(USB)
endif

# You should not have to change anything below here.

CC             = avr-gcc

# Override is only needed by avr-lib build system.

override CFLAGS        = -g -Wall $(OPTIMIZE) -mmcu=$(MCU) -DF_CPU=$(F_CPU) -I$(TOP)/_arduino $(DEFS)
override LDFLAGS       = -Wl,-Map,$(PRG).map

OBJCOPY        = avr-objcopy
OBJDUMP        = avr-objdump

all: $(PRG).elf lst text eeprom

$(PRG).elf: libarduino.a $(COBJ)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(COBJ) -L. -larduino $(LIBS)

# dependency:
$(COBJ): %.o: %.c
	$(CC) $(CFLAGS) -c -o $@ $<

libarduino.a: $(OBJ_ARDUINO)
	avr-ar -r $@ $^
$(OBJ_ARDUINO): %.o: $(TOP)/_arduino/%.c
	$(CC) $(CFLAGS) -c -o $@ $<

lst:  $(PRG).lst

%.lst: %.elf
	$(OBJDUMP) -h -S $< > $@

# Rules for building the .text rom images

text: hex bin srec

hex:  $(PRG).hex
bin:  $(PRG).bin
srec: $(PRG).srec

%.hex: %.elf
	$(OBJCOPY) -j .text -j .data -O ihex $< $@

%.srec: %.elf
	$(OBJCOPY) -j .text -j .data -O srec $< $@

%.bin: %.elf
	$(OBJCOPY) -j .text -j .data -O binary $< $@

# Rules for building the .eeprom rom images

eeprom: ehex ebin esrec

ehex:  $(PRG)_eeprom.hex
ebin:  $(PRG)_eeprom.bin
esrec: $(PRG)_eeprom.srec

%_eeprom.hex: %.elf
	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@ \
	|| { echo empty $@ not generated; exit 0; }

%_eeprom.srec: %.elf
	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O srec $< $@ \
	|| { echo empty $@ not generated; exit 0; }

%_eeprom.bin: %.elf
	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O binary $< $@ \
	|| { echo empty $@ not generated; exit 0; }

# Every thing below here is used by avr-libc's build system and can be ignored
# by the casual user.

EXTRA_CLEAN_FILES       = *.hex *.bin *.srec

write: $(PRG).hex
	$(LOADER) $(LOADERFLAGS) -U flash:w:$<

VERIFAST = verifast
VERIFAST_OPT = -c -I ../../_arduino4verifast

verify:
	$(VERIFAST) $(VERIFAST_OPT) main.c

clean:
	rm -rf *.o $(PRG).elf *.eps *.png *.pdf *.bak *.a
	rm -rf *.lst *.map *.tmp $(EXTRA_CLEAN_FILES)