1 src = $(wildcard *.c)

2 obj = $(src:.c=.o)

3 bin = voltmeter

4 hex = $(bin).hex

5 eep = $(bin).eep

6

7 mcu_gcc = atmega168

8 mcu_dude = m168

9

10 CC = avr-gcc

11 OBJCOPY = avr-objcopy

12

13 CFLAGS = -O2 -pedantic -Wall -mmcu=$(mcu_gcc)

14 LDFLAGS = -Wl,-Map,$(bin).map -mmcu=$(mcu_gcc) -Wl,-u,vfprintf -lprintf_flt -lm

15

16 .PHONY: all

17 all: $(hex) $(eep)

18

19 $(bin): $(obj)

20 $(CC) -o $@ $(obj) $(LDFLAGS)

21

22 $(hex): $(bin)

23 $(OBJCOPY) -j .text -j .data -O ihex -R .eeprom $< $@

24

25 $(eep): $(bin)

26 $(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@

27

28 .PHONY: program

29 program: $(hex)

30 avrdude -c usbtiny -p $(mcu_dude) -e -U flash:w:$(hex)

31

32 .PHONY: clean

33 clean:

34 rm -f $(bin) $(obj) $(hex) $(eep) $(bin).map