MCU_TARGET     = atmega328p
MCU_FREQ       = 16000000UL
MCU_TTY        = /dev/ttyUSB0
MCU_TTY_BAUD   = 57600
MCU_PROGRAMMER = arduino

PRG            = main
OBJ            = main.o uart.o

OPTIMIZE       = -O2
DEFS           = -DF_CPU=$(MCU_FREQ) -DBAUDRATE=$(MCU_TTY_BAUD)
LIBS           =
# You should not have to change anything below here.
CC             = avr-gcc
# Override is only needed by avr-lib build system.
override CFLAGS        = -g --std=c99 -Wall $(OPTIMIZE) -mmcu=$(MCU_TARGET) $(DEFS)
override LDFLAGS       = -Wl,-Map,$(PRG).map
OBJCOPY        = avr-objcopy
OBJDUMP        = avr-objdump

all: $(PRG).elf $(PRG).asm

$(PRG).elf: $(OBJ)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)

# dependencies:

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

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

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

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

# to get the final asm code

%.asm: %.elf
	$(OBJDUMP) -z -j .text -m avr5 -d $< > $@

reset:
	avrdude -v -p$(MCU_TARGET) -c$(MCU_PROGRAMMER) -P$(MCU_TTY) -b$(MCU_TTY_BAUD)

flash: $(PRG).hex
	avrdude -v -p$(MCU_TARGET) -c$(MCU_PROGRAMMER) -P$(MCU_TTY) -b$(MCU_TTY_BAUD) -u -U flash:w:$(PRG).hex

screen:
	screen $(MCU_TTY) $(MCU_TTY_BAUD)