SRC = $(wildcard *.c)
OBJS = $(SRC:%.c=%.o)
# HEADERS = $(SRC:%.c=%.h)

PRG            = blinky
OBJ            = $(PRG).o
#if you use a different chip, you must also change the avrdude line
MCU_TARGET     = atmega644p
AVRDUDE_CHIP = atmega644P
#the standard parallel port programmer
AVRDUDE_PGMR   = stk200 
#sometimes gcc will optimize away our delay loop
OPTIMIZE       = -O0

#eeprom seems to mess up sometimes, but we dont need it for now.
#EEPROM         = eeprom
EEPROM         =

DEFS           =
LIBS           = -lm

ASRC = i2cmaster.S

# You should not have to change anything below here.

CC             = avr-gcc
CXX             = avr-g++

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

override CFLAGS        = -g -Wall $(OPTIMIZE) -mmcu=$(MCU_TARGET) $(DEFS) -I/usr/local/avr/avr/include
override CXXFLAGS        = -g -Wall $(OPTIMIZE) -mmcu=$(MCU_TARGET) $(DEFS)
override LDFLAGS       = -Wl,-Map,$(PRG).map 

OBJCOPY        = avr-objcopy
OBJDUMP        = avr-objdump

all: $(PRG).elf lst text $(EEPROM) 

$(PRG).elf: $(SRC) $(HEADERS)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $(PRG).elf $(SRC) $(LIBS)

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

install: $(PRG).hex
	avrdude -p $(AVRDUDE_CHIP) -c$(AVRDUDE_PGMR) -e -U flash:w:$(PRG).hex

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 $< $@

%_eeprom.srec: %.elf
	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O srec $< $@

%_eeprom.bin: %.elf
	$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O binary $< $@

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

FIG2DEV                 = fig2dev
EXTRA_CLEAN_FILES       = *.hex *.bin *.srec

dox: eps png pdf

eps: $(PRG).eps
png: $(PRG).png
pdf: $(PRG).pdf

%.eps: %.fig
	$(FIG2DEV) -L eps $< $@

%.pdf: %.fig
	$(FIG2DEV) -L pdf $< $@

%.png: %.fig
	$(FIG2DEV) -L png $< $@