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PORT = /dev/ttyUSB0
CC = avr-gcc
LD = avr-ld
RM = rm -f
MCU=atmega32u4
CFLAGS += -mcall-prologues
CFLAGS += -mmcu=$(MCU)
CFLAGS += -Os
CFLAGS += -g
CFLAGS += -Wl,-gc-sections
CFLAGS += -Wl,-relax
TARGET = main
SRCS += main.c
OBJS := $(patsubst %.c,%.o, $(SRCS))
.PHONY: all clean flash
all: $(TARGET).hex
%.o: %.c
$(CC) -c $(CFLAGS) $< -o $@
$(TARGET): $(OBJS)
$(LD) $^ $(LFLAGS) -o $@
$(TARGET).hex: $(TARGET)
avr-objcopy -R .eeprom -O ihex $< $@
flash: $(TARGET).hex
avrdude -p $(MCU) -c avr109 -P $(PORT) -U flash:w:$(TARGET).hex
clean:
$(RM) $(TARGET) $(TARGET).hex $(OBJS)
compile_commands.json: makefile
compiledb make -Bn
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