FLASHPORT=/dev/ttyS0
FLASHDEVTYPE=ponyser
OFORMAT = ihex

override CFLAGS += -I../lib -g -funsigned-char -funsigned-bitfields -fpack-struct \
         -fshort-enums -Wall -Wstrict-prototypes -Wa,-ahlms=$(<:.c=.lst)

# Optional assembler flags.
ASFLAGS = -Wa,-ahlms=$(<:.s=.lst), -gstabs 

# Optional linker flags.
override LDFLAGS += -Wl,-Map=$(TARGET).map,--cref

# Additional library flags (-lm = math library).
LIBFLAGS = -lm

# Define programs and commands.
SHELL = sh

CC = avr-gcc

OBJCOPY = avr-objcopy
OBJDUMP = avr-objdump

REMOVE = rm -f
COPY = cp

ELFCOFF = objtool

HEXSIZE = @avr-size --target=$(OFORMAT) $(TARGET).hex
ELFSIZE = @avr-size $(TARGET).elf

# Define all listing files.
LST = $(ASRC:.s=.lst) $(SRC:.c=.lst)

# Combine all necessary flags and optional flags. Add target processor to flags.
ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS)
ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)
ALL_LDFLAGS = -mmcu=$(MCU) $(LDFLAGS)

# Default target.
all: $(TARGET).elf $(TARGET).hex $(TARGET).bin $(TARGET).eep $(TARGET).lss

# Display size of file.
sizebefore:
	@echo Size before:
	-$(HEXSIZE)

sizeafter:
	@echo Size after:
	$(HEXSIZE)

# Display compiler version information.
gccversion : 
	$(CC) --version

# Target: Convert ELF to COFF for use in debugging / simulating in AVR Studio.
coff: $(TARGET).cof end

%.cof: %.elf
	$(ELFCOFF) loadelf $< mapfile $*.map writecof $@


# Create final output files (.hex, .eep) from ELF output file.
%.hex: %.elf
	$(OBJCOPY) -O $(OFORMAT) -R .eeprom $< $@

%.bin: %.elf
	$(OBJCOPY) -O binary -R .eeprom $< $@

%.eep: %.elf
	-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 -O $(OFORMAT) $< $@

# Create extended listing file from ELF output file.
%.lss: %.elf
	$(OBJDUMP) -h -S $< > $@



# Link: create ELF output file from object files.
%.elf: $(SRC)
	$(CC) $(ALL_LDFLAGS) $(ALL_CFLAGS) -combine $^ $(LIBFLAGS) --output $@


# Target: clean project.
clean: clean_list

clean_list :
	$(REMOVE) $(TARGET).hex
	$(REMOVE) $(TARGET).eep
	$(REMOVE) $(TARGET).obj
	$(REMOVE) $(TARGET).cof
	$(REMOVE) $(TARGET).elf
	$(REMOVE) $(TARGET).bin
	$(REMOVE) $(TARGET).map
	$(REMOVE) $(TARGET).obj
	$(REMOVE) $(TARGET).a90
	$(REMOVE) $(TARGET).sym
	$(REMOVE) $(TARGET).lnk
	$(REMOVE) $(TARGET).lss
	$(REMOVE) $(LST)

# Remove the '-' if you want to see the dependency files generated.
-include $(SRC:.c=.d)

# Listing of phony targets.
.PHONY : all begin finish end sizebefore sizeafter gccversion coff clean clean_list