# $Id$

MCU = atmega328p
CLOCK = 16000000
CFLAGS = -Wall -Os -ffunction-sections -fdata-sections -mmcu=$(MCU) -DF_CPU=$(CLOCK)
LDFLAGS = -Os -Wl,--gc-sections -mmcu=$(MCU)

help:
	@echo "Targets:"
	@echo "  %.hex:    Build firmware from %.c"
	@echo "  upload-%: Upload firmware to AVR"

%.hex: %.elf
	avr-objcopy -O ihex $< $@

%.elf: %.o
	avr-gcc $(LDFLAGS) -o $@ $<

%.o: %.c
	avr-gcc -c $(CFLAGS) -o $@ $<

upload-%: %.hex
	avrdude -p$(MCU) -cstk500v1 -P/dev/ttyUSB0 -b57600 -D -Uflash:w:$<:i