##############################################################################
#                                                                            #
# AVR-GCC skeleton                                                           #
#                                                                            #
# by Triffid Hunter                                                          #
#                                                                            #
##############################################################################

##############################################################################
#                                                                            #
# Change these to suit your application                                      #
#                                                                            #
##############################################################################

PROGRAM = mendel

SOURCES = $(PROGRAM).c serial.c dda.c gcode.c timer.c clock.c temp.c sermsg.c dda_queue.c watchdog.c debug.c sersendf.c

##############################################################################
#                                                                            #
# Change these to suit your hardware                                         #
#                                                                            #
##############################################################################

MCU_TARGET = atmega328p
F_CPU = 16000000L

##############################################################################
#                                                                            #
# These defaults should be ok, change if you need to                         #
#                                                                            #
##############################################################################

ARCH = avr-
CC = $(ARCH)gcc
OBJDUMP = $(ARCH)objdump
OBJCOPY = $(ARCH)objcopy

DEFS = -DF_CPU=$(F_CPU)
# DEFS += "-DDEBUG=1"
# DEFS += "-DREQUIRE_LINENUMBER"
# DEFS += "-DREQUIRE_CHECKSUM"

OPTIMIZE = -Os -ffunction-sections -finline-functions-called-once -DDEBUG
# OPTIMIZE = -O0
CFLAGS = -g -Wall -Wstrict-prototypes $(OPTIMIZE) -mmcu=$(MCU_TARGET) $(DEFS) -std=gnu99 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -save-temps
LDFLAGS = -Wl,--as-needed -Wl,--gc-sections

AVRDUDE = avrdude

##############################################################################
#                                                                            #
# udev rule for /dev/arduino (insert into /etc/udev/rules.d/99-local.rules)  #
# SUBSYSTEMS=="usb", ATTRS{idProduct}=="6001", ATTRS{idVendor}=="0403",      #
#     NAME="%k", SYMLINK+="arduino", SYMLINK+="arduino_$attr{serial}",       #
#     MODE="0660"                                                            #
#                                                                            #
##############################################################################
PROGPORT = /dev/arduino
PROGBAUD = 57600

OBJ = $(patsubst %.c,%.o,${SOURCES})

.PHONY: all program clean size
.PRECIOUS: %.o %.elf

all: $(PROGRAM).hex $(PROGRAM).lst $(PROGRAM).sym size

program: $(PROGRAM).hex
	stty $(PROGBAUD) raw ignbrk hup < $(PROGPORT)
	@sleep 0.1
	@stty $(PROGBAUD) raw ignbrk hup < $(PROGPORT)
	$(AVRDUDE) -cstk500v1 -b$(PROGBAUD) -p$(MCU_TARGET) -P$(PROGPORT) -C/etc/avrdude.conf -U flash:w:$^
	stty 115200 raw ignbrk -hup -echo ixon < $(PROGPORT)

clean:
	rm -rf *.o *.elf *.lst *.map *.sym *.lss *.eep *.srec *.bin *.hex *.al *.i *.s *~

size: $(PROGRAM).hex
	@echo "  SIZE                   Atmega168        Atmega328p"
	@objdump -h mendel.elf | perl -ne '/.(text)\s+([0-9a-f]+)/ && do { $$a += eval "0x$$2" }; END { printf "    FLASH: %5d bytes  (%2d%% of %2dkb)    (%2d%% of %2dkb)\n", $$a, $$a * 100 / (14 * 1024), 14, $$a * 100 / (30 * 1024), 30 }'
	@objdump -h mendel.elf | perl -ne '/.(data|bss)\s+([0-9a-f]+)/ && do { $$a += eval "0x$$2" }; END { printf "    RAM  : %5d bytes  (%2d%% of %2dkb)    (%2d%% of %2dkb)\n", $$a, $$a * 100 / (1 * 1024), 1, $$a * 100 / (2 * 1024), 2 }'

%.o: %.c
	@echo "  CC        $@"
	@$(CC) -c $(CFLAGS) -Wa,-adhlns=$(<:.c=.al) -o $@ $^

%.elf: $(OBJ)
	@echo "  LINK      $@"
	@$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LIBS)

%.lst: %.elf
	@echo "  OBJDUMP   $@"
	@$(OBJDUMP) -h -S $< > $@

%.hex: %.elf
	@echo "  OBJCOPY   $@"
	@$(OBJCOPY) -j .text -j .data -O ihex $< $@

%.bin: %.elf
	@echo "  OBJCOPY   $@"
	@$(OBJCOPY) -j .text -j .data -O binary $< $@

%.sym: %.elf
	@echo "  SYM       $@"
	@$(OBJDUMP) -t $< | perl -ne 'BEGIN { printf "  ADDR  NAME                  SIZE\n"; } /([0-9a-f]+)\s+(\w+)\s+O\s+\.(bss|data)\s+([0-9a-f]+)\s+(\w+)/ && printf "0x%04x  %-20s +%d\n", eval("0x$$1") & 0xFFFF, $$5, eval("0x$$4")' | sort -k1 > $@