makefile

CC     = avr-gcc
CPP    = avr-cpp
COPY   = avr-objcopy
SIZE   = avr-size
PROG   = avrdude
DUMP   = avr-objdump 

MCU    = atmega328p
CFLAGS = -mmcu=$(MCU) -std=c11 -Wall -Wextra -finline-functions
#CFLAGS = -mmcu=$(MCU) -std=c11 -Wall -Wextra -O2 -fsigned-char -fno-strict-aliasing -g
#LFLAGS = -Wl,-Map=$(BUILDDIR)/main.map

BUILDDIR = build

OBJS = $(addprefix $(BUILDDIR)/, main.o pins.o thermal.o led.o motor_driver.o motor_states.o simple_moving_average.o uart.o queue.o task_prioritizer.o)

all: $(BUILDDIR) $(BUILDDIR)/main.hex

%.hex: %.elf
	$(COPY) -O ihex -R .eeprom $< $@

$(BUILDDIR)/main.elf: $(OBJS)
	$(CC) $(CFLAGS) $^ -o $@
	#$(CC) $(CFLAGS) $(LFLAGS) $^ -o $@

$(BUILDDIR)/%.o: %.c #main.h pins.h
	$(CC) -Os -DF_CPU=16000000UL $(CFLAGS) -c $< -o $@

#$(BUILDDIR)/%.o: %.c main.h $(BUILDDIR)/pios.h
#	$(CC) $(CFLAGS) -c $< -o $@

#$(BUILDDIR)/pios.h: pios.h
#	$(CPP) -CC $< $@

$(BUILDDIR):
	mkdir $(BUILDDIR)

clean:
	rm -f $(BUILDDIR)/*

size:
	$(SIZE) $(BUILDDIR)/main.elf

#  make send - program firmware on device
send: $(BUILDDIR)/main.hex
	$(PROG) -F -V -c arduino -p ATMEGA328P -P /dev/ttyACM0 -b 115200 -U flash:w:$<
	#$(PROG) -P usb -p m328p -c avrispmkii -B 5 -U flash:w:$< -U lfuse:w:0xFF:m -U hfuse:w:0xDF:m -U efuse:w:0x05:m

# low fuse:  0xFF - no CKDIV8, no CKOUT, low power xtal (8-16 MHz), slowly rising power
# high fuse: 0xDF - no RSTDISBL, no DWEN, SPIEN, no WDTON, no EESAVE, boot size = 256 words (the minimum), no BOOTRST
# extended fuse: 0x05 - BOD level ~ 2.7 V

list: $(BUILDDIR)/main.lst

$(BUILDDIR)/main.lst: $(BUILDDIR)/main.elf
	$(DUMP) -S $< > $@