SHELL = /bin/sh
MCU = atmega16
F_CPU=16000000

CC = avr-gcc
CFLAGS = -g -Os -mmcu=$(MCU) -DF_CPU=$(F_CPU) -Wall
AS = avr-as
ASFLAGS = $(CFLAGS)
LD = avr-ld
LDFLAGS =

TARGETS := test img_mono blink fade pulse numtest
MAINS := $(addsuffix .o, $(TARGETS))
C_OBJS := base.o libleds.o chars/chars.o
S_OBJS := libleds_asm.o
OBJS := $(C_OBJS) $(S_OBJS)
DEPS := Makefile libleds.h

COLOR_TARGETS := c_black c_white c_red c_green c_blue
COLOR_MAINS := $(addsuffix .o, $(COLOR_TARGETS))

NUMBERS = $(shell seq 0 9)
UPPERCASE = A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
LOWERCASE = $(call lc, $(UPPERCASE))
SPECIAL_CHARS = space
CHARS = $(NUMBERS) $(UPPERCASE) $(LOWERCASE) $(SPECIAL_CHARS)

NUMBERS_DEP = chars/chars.o $(addprefix chars/, $(addsuffix .xbm, $(NUMBERS)))
UPPERCASE_DEP = chars/chars.o $(addprefix chars/, $(addsuffix .xbm, $(UPPERCASE)))
LOWERCASE_DEP = chars/chars.o $(addprefix chars/, $(addsuffix .xbm, $(LOWERCASE)))
SPECIAL_CHARS_DEP = chars/chars.o $(addprefix chars/, $(addsuffix .xbm, $(SPECIAL_CHARS)))
CHARS_DEP = chars/chars.o $(addprefix chars/, $(addsuffix .xbm, $(CHARS)))


.PHONY: all all-normal all-colors
all: all-core all-colors

all-core: $(TARGETS)
.PHONY: color
all-colors color: $(COLOR_TARGETS)

.PHONY: clean
clean:
	rm -f $(TARGETS) $(MAINS) $(OBJS) $(COLOR_TARGETS) $(COLOR_MAINS)
	rm -f chars/chars.o

.PHONY: list-targets _list-targets-core _list-targets-color
list-targets: _list-targets-core _list-targets-color
	@printf "\n"

list-targets-core list-targets-color: % : _%
	@printf "\n"

_list-targets-core:
	@printf "%s " "$(TARGETS)"

_list-targets-color:
	@printf "%s " "$(COLOR_TARGETS)"


# Build targets


chars/chars.c: %.c: %.h
	@touch $@

$(MAINS) $(C_OBJS): %.o : %.c $(DEPS)
	$(CC) $(CFLAGS) -c -o $@ $<

$(TARGETS) $(COLOR_TARGETS): % : $(OBJS) %.o
	$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^

numtest.o: $(NUMBERS_DEP)
img_mono.o: %.o : %.xbm

# Color Targets
c_black.o: color.c $(DEPS)
	$(CC) $(CFLAGS) -c -o $@ $< \
		-DCOLOR_RED=0x00 -DCOLOR_GREEN=0x00 -DCOLOR_BLUE=0x00 
c_white.o: color.c $(DEPS)
	$(CC) $(CFLAGS) -c -o $@ $< \
		-DCOLOR_RED=0x00 -DCOLOR_GREEN=0xFF -DCOLOR_BLUE=0xFF 
c_red.o: color.c $(DEPS)
	$(CC) $(CFLAGS) -c -o $@ $< \
		-DCOLOR_RED=0xFF -DCOLOR_GREEN=0x00 -DCOLOR_BLUE=0x00 
c_green.o: color.c $(DEPS)
	$(CC) $(CFLAGS) -c -o $@ $< \
		-DCOLOR_RED=0x00 -DCOLOR_GREEN=0xFF -DCOLOR_BLUE=0x00 
c_blue.o: color.c $(DEPS)
	$(CC) $(CFLAGS) -c -o $@ $< \
		-DCOLOR_RED=0x00 -DCOLOR_GREEN=0x00 -DCOLOR_BLUE=0xFF