Programming AVR on Linux

README.md

Programming AVR on Linux

Install avr-gcc, avr-libc, avr-binutils, avrdude:

$ sudo pacman -S avr-gcc avr-libc avr-binutils avrdude

Build the hex file:

$ make hex

Flash to the chip:

$ sudo make flash

blink.c

#include <avr/io.h>
#include <util/delay.h>

int main() {
	DDRB = 0xFF;
	for (;;) {
		PORTB = 0xFF;
		_delay_ms(500);
		PORTB = 0x00;
		_delay_ms(500);
	}
}

Makefile

MCU = atmega32
F_CPU = 16000000
PROGRAMMER = -c usbasp

AVRDUDE = avrdude $(PROGRAMMER) -p $(MCU)
CC = avr-gcc -Wall -Os -DF_CPU=$(F_CPU) -mmcu=$(MCU)


.PHONY: hex flash clean


hex: blink.hex


%.hex: %.elf
	rm -f $@
	avr-objcopy -j .text -j .data -O ihex $< $@


%.elf: %.o
	$(CC) $< -o $@


%.o: %.c
	$(CC) -c $< -o $@

flash: hex
	$(AVRDUDE) -U flash:w:blink.hex:i

clean:
	rm -f blink.hex blink.elf blink.o