# params
# http://eleccelerator.com/fusecalc/fusecalc.php

PART       = t45
DEVICE     = attiny45
CLOCK      = 8000000
PROGRAMMER = usbtiny
OBJECTS    = main.o
FUSES      = -U lfuse:w:0xe2:m -U hfuse:w:0xdf:m


# commands

AVRDUDE = avrdude -p $(PART) -c $(PROGRAMMER)
COMPILE = avr-gcc -Wall -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE)


# symbolic targets:

all:	main.hex

flash:	all
	$(AVRDUDE) -U flash:w:main.hex:i

fuse:
	$(AVRDUDE) $(FUSES)

clean:
	rm -f main.hex main.elf $(OBJECTS)

read:
	$(AVRDUDE) -v

disasm:	main.elf
		avr-objdump -d main.elf


# file targets:

.c.o:
	$(COMPILE) -c $< -o $@

.S.o:
	$(COMPILE) -x assembler-with-cpp -c $< -o $@

main.elf: $(OBJECTS)
	$(COMPILE) -o main.elf $(OBJECTS)

main.hex: main.elf
	rm -f main.hex
	avr-objcopy -j .text -j .data -O ihex main.elf main.hex
	avr-size --format=avr --mcu=$(DEVICE) main.elf