Makefile for arduino avr programs

Makefile

MCU='atmega328p'
F_CPU=16000000
PORT='/dev/ttyACM0'
UPLOAD_RATE=115200

SOURCES=main.c

all: compile

compile: build/main.hex

upload: build/main.hex
	avrdude -p $(MCU) -P $(PORT) -c arduino -b $(UPLOAD_RATE) -U flash:w:build/main.hex:i

build/main.elf: build *.c
	avr-gcc -o build/main.elf -mmcu=$(MCU) -DF_CPU=$(F_CPU) $(SOURCES)

build/main.hex: build/main.elf
	avr-objcopy -O ihex -R .eeprom build/main.elf build/main.hex

build:
	mkdir build