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@dansku
Created May 28, 2014
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#Makefile
MAIN = blink.c
MCU = atmega32
F_CPU = 16000000
BAUD = 9600
PROGRAMMER_TYPE = usbtiny
## Defined programs / locations
CC = avr-gcc
OBJCOPY = avr-objcopy
OBJDUMP = avr-objdump
AVRSIZE = avr-size
AVRDUDE = avrdude
## Compilation options, type man avr-gcc if you're curious.
CFLAGS = -mmcu=$(MCU) -DF_CPU=$(F_CPU)UL -DBAUD=$(BAUD) -Os -I. -I$(EXTRA_SOURCE_DIR)
CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
CFLAGS += -Wall -Wstrict-prototypes
CFLAGS += -g -ggdb
CFLAGS += -ffunction-sections -fdata-sections -Wl,--gc-sections -Wl,--relax
CFLAGS += -std=gnu99
## Lump target and extra source files together
TARGET = $(strip $(basename $(MAIN)))
SRC = $(TARGET).c
EXTRA_SOURCE = $(addprefix $(EXTRA_SOURCE_DIR), $(EXTRA_SOURCE_FILES))
SRC += $(EXTRA_SOURCE)
SRC += $(LOCAL_SOURCE)
## List of all header files
HEADERS = $(SRC:.c=.h)
## For every .c file, compile an .o object file
OBJ = $(SRC:.c=.o)
## Generic Makefile targets. (Only .hex file is necessary)
all: $(TARGET).hex
%.hex: %.elf
$(OBJCOPY) -R .eeprom -O ihex $< $@
%.elf: $(SRC)
$(CC) $(CFLAGS) $(SRC) --output $@
%.eeprom: %.elf
$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@
debug:
@echo
@echo "Source files:" $(SRC)
@echo "MCU, F_CPU, BAUD:" $(MCU), $(F_CPU), $(BAUD)
@echo
# Optionally create listing file from .elf
# This creates approximate assembly-language equivalent of your code.
# Useful for debugging time-sensitive bits,
# or making sure the compiler does what you want.
disassemble: $(TARGET).lst
disasm: disassemble
eeprom: $(TARGET).eeprom
%.lst: %.elf
$(OBJDUMP) -S $< > $@
# Optionally show how big the resulting program is
size: $(TARGET).elf
$(AVRSIZE) -C --mcu=$(MCU) $(TARGET).elf
clean:
rm -f $(TARGET).elf $(TARGET).hex $(TARGET).obj \
$(TARGET).o $(TARGET).d $(TARGET).eep $(TARGET).lst \
$(TARGET).lss $(TARGET).sym $(TARGET).map $(TARGET)~ \
$(TARGET).eeprom
squeaky_clean:
rm -f *.elf *.hex *.obj *.o *.d *.eep *.lst *.lss *.sym *.map *~
##########------------------------------------------------------##########
########## Programmer-specific details ##########
########## Flashing code to AVR using avrdude ##########
##########------------------------------------------------------##########
flash: $(TARGET).hex
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U flash:w:$<
## An alias
program: flash
flash_eeprom: $(TARGET).eeprom
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -U eeprom:w:$<
avrdude_terminal:
$(AVRDUDE) -c $(PROGRAMMER_TYPE) -p $(MCU) $(PROGRAMMER_ARGS) -nt
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