##
##  spreadspace avr utils
##
##
##  Copyright (C) 2013-2018 Christian Pointner <equinox@spreadspace.org>
##
##  This file is part of spreadspace avr utils.
##
##  spreadspace avr utils is free software: you can redistribute it and/or modify
##  it under the terms of the GNU General Public License as published by
##  the Free Software Foundation, either version 3 of the License, or
##  any later version.
##
##  spreadspace avr utils is distributed in the hope that it will be useful,
##  but WITHOUT ANY WARRANTY; without even the implied warranty of
##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
##  GNU General Public License for more details.
##
##  You should have received a copy of the GNU General Public License
##  along with spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
##

ifndef SPREADAVR_PATH
SPREADAVR_PATH := ..
endif
include $(SPREADAVR_PATH)/defines.mk
ifndef MCU
$(error Unknown board: '$(BOARD_TYPE)')
endif

## project-specific objects
SRC := $(OBJ:%.o=%.c)
DEP := $(SRC:%.c=%.d)
CXX_SRC := $(CXX_OBJ:%.o=%.cpp)
CXX_DEP := $(CXX_SRC:%.cpp=%.d)

OBJ_LIB := $(LIBS:%=lib-%.o)
SRC_LIB := $(LIBS:%=$(LIB_DIR)/%.c)
DEP_LIB := $(LIBS:%=lib-%.d)
CXX_OBJ_LIB := $(CXX_LIBS:%=lib-%.o)
CXX_SRC_LIB := $(CXX_LIBS:%=$(LIB_DIR)/%.cpp)
CXX_DEP_LIB := $(CXX_LIBS:%=lib-%.d)

.PHONY: prepare clean clean-external distclean clean-lufa clean-fastled clean-pjon clean-vusb clean-radiohead clean-rweather-crypto program erase flash reset run

ELFFILE := $(NAME).elf
HEXFILE := $(NAME).hex

all: prepare $(HEXFILE)


## external Libs
LDFLAGS += -L./

ifdef LUFA_PATH
CFLAGS += -I$(LUFA_PATH)
CFLAGS += -DUSES_LUFA
CFLAGS += -DF_USB=$(F_USB)UL
CFLAGS += -DBOARD=BOARD_$(LUFA_BOARD)
CFLAGS += $(LUFA_OPTS)
endif

ifdef FASTLED_PATH
CXXFLAGS += -I$(FASTLED_PATH)
CXXFLAGS += -DUSES_FASTLED
CXXFLAGS += -DARDUINO
CXXFLAGS += -DNEED_CXX_BITS
CXXFLAGS += $(FASTLED_OPTS)
endif

ifdef PJON_PATH
CXXFLAGS += -I$(PJON_PATH)
CXXFLAGS += -DUSES_PJON
CXXFLAGS += -DARDUINO=106
CXXFLAGS += $(PJON_OPTS)
endif

ifdef VUSB_PATH
CFLAGS += -I$(VUSB_PATH)/usbdrv
CFLAGS += -I.
CFLAGS += -DUSES_VUSB
CFLAGS += $(VUSB_OPTS)
endif

ifdef RADIOHEAD_PATH
CXXFLAGS += -I$(RADIOHEAD_PATH)
CXXFLAGS += -DUSES_RADIOHEAD
CXXFLAGS += -DRH_PLATFORM=RH_PLATFORM_GENERIC_AVR8
ifdef RWEATHER_CRYPTO_PATH
CXXFLAGS += -DRH_ENABLE_ENCRYPTION_MODULE
endif
CXXFLAGS += $(RADIOHEAD_OPTS)
endif

ifdef RWEATHER_CRYPTO_PATH
CXXFLAGS += -I$(RWEATHER_CRYPTO_PATH)/libraries/Crypto
CXXFLAGS += -DUSES_RWEATHER_CRYPTO
CXXFLAGS += $(RWEATHER_CRYPTO_OPTS)
endif

prepare: $(EXTERNAL_LIBS:%=build-%)
clean-external: $(EXTERNAL_LIBS:%=clean-%)

export

build-lufa: liblufa.a

liblufa.a: Makefile
	@echo ""
	@echo "****************************************************"
	@echo "* building external LUFA lib ($(LUFA_PATH))"
	@echo ""
	make -f $(SPREADAVR_PATH)/lufa.mk liblufa.a
	make -f $(SPREADAVR_PATH)/lufa.mk clean
	@echo ""
	@echo "****************************************************"

clean-lufa:
	@echo ""
	@echo "****************************************************"
	@echo "cleaning external LUFA lib ($(LUFA_PATH))"
	@echo ""
	make -f $(SPREADAVR_PATH)/lufa.mk clean
	rm -f liblufa.a
	@echo ""
	@echo "****************************************************"


build-fastled: libfastled.a

libfastled.a: Makefile
	@echo ""
	@echo "****************************************************"
	@echo "building external FastLED lib ($(FASTLED_PATH))"
	@echo ""
	make -f $(SPREADAVR_PATH)/fastled.mk libfastled.a
	make -f $(SPREADAVR_PATH)/fastled.mk clean
	@echo ""
	@echo "****************************************************"

clean-fastled:
	@echo ""
	@echo "****************************************************"
	@echo "cleaning external FastLED lib ($(FASTLED_PATH))"
	@echo ""
	make -f $(SPREADAVR_PATH)/fastled.mk clean
	rm -f libfastled.a
	@echo ""
	@echo "****************************************************"


build-pjon: libpjon.a

libpjon.a: Makefile
	@echo ""
	@echo "****************************************************"
	@echo "building external PJON lib ($(PJON_PATH))"
	@echo ""
	make -f $(SPREADAVR_PATH)/pjon.mk libpjon.a
	make -f $(SPREADAVR_PATH)/pjon.mk clean
	@echo ""
	@echo "****************************************************"

clean-pjon:
	@echo ""
	@echo "****************************************************"
	@echo "cleaning external PJON lib ($(PJON_PATH))"
	@echo ""
	make -f $(SPREADAVR_PATH)/pjon.mk clean
	rm -f libpjon.a
	@echo ""
	@echo "****************************************************"


build-vusb: libvusb.a

libvusb.a: Makefile
	@echo ""
	@echo "****************************************************"
	@echo "building external V-USB lib ($(VUSB_PATH))"
	@echo ""
	make -f $(SPREADAVR_PATH)/vusb.mk libvusb.a
	make -f $(SPREADAVR_PATH)/vusb.mk clean
	@echo ""
	@echo "****************************************************"

clean-vusb:
	@echo ""
	@echo "****************************************************"
	@echo "cleaning external V-USB lib ($(VUSB_PATH))"
	@echo ""
	make -f $(SPREADAVR_PATH)/vusb.mk clean
	rm -f libvusb.a
	@echo ""
	@echo "****************************************************"


build-radiohead: libradiohead.a

libradiohead.a: Makefile
	@echo ""
	@echo "****************************************************"
	@echo "building external RadioHead lib ($(RADIOHEAD_PATH))"
	@echo ""
	@echo "**   #######################################################################"
	@echo "**   ##   DANGER DANGER DANGER DANGER DANGER DANGER DANGER DANGER DANGER  ##"
	@echo "**   ##                                                                   ##"
	@echo "**   ##   The radiohead lib is not working properly at the moment.        ##"
	@echo "**   ##   You have been warned!!                                          ##"
	@echo "**   ##                                                                   ##"
	@echo "**   ##   DANGER DANGER DANGER DANGER DANGER DANGER DANGER DANGER DANGER  ##"
	@echo "**   #######################################################################"
	@echo ""
	make -f $(SPREADAVR_PATH)/radiohead.mk libradiohead.a
	make -f $(SPREADAVR_PATH)/radiohead.mk clean
	@echo ""
	@echo "****************************************************"

clean-radiohead:
	@echo ""
	@echo "****************************************************"
	@echo "cleaning external RadioHead lib ($(RADIOHEAD_PATH))"
	@echo ""
	make -f $(SPREADAVR_PATH)/radiohead.mk clean
	rm -f libradiohead.a
	@echo ""
	@echo "****************************************************"


build-rweather-crypto: librweather-crypto.a

librweather-crypto.a: Makefile
	@echo ""
	@echo "****************************************************"
	@echo "building external rweather/crypto lib ($(RWEATHER_CRYPTO_PATH))"
	@echo ""
	make -f $(SPREADAVR_PATH)/rweather-crypto.mk librweather-crypto.a
	make -f $(SPREADAVR_PATH)/rweather-crypto.mk clean
	@echo ""
	@echo "****************************************************"

clean-rweather-crypto:
	@echo ""
	@echo "****************************************************"
	@echo "cleaning external rweather/crypto lib ($(RWEATHER_CRYPTO_PATH))"
	@echo ""
	make -f $(SPREADAVR_PATH)/rweather-crypto.mk clean
	rm -f librweather-crypto.a
	@echo ""
	@echo "****************************************************"


## project-specific objects
%.d: %.c Makefile
	@set -e; rm -f $@; \
  $(CC) -MM $(CFLAGS) $< > $@.$$$$; \
  sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
  rm -f $@.$$$$; echo '(re)building $@'

%.d: %.cpp Makefile
	@set -e; rm -f $@; \
  $(CXX) -MM $(CXXFLAGS) $< > $@.$$$$; \
  sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
  rm -f $@.$$$$; echo '(re)building $@'

lib-%.d: $(LIB_DIR)/%.c Makefile
	@set -e; rm -f $@; \
  $(CC) -MM $(CFLAGS) $< > $@.$$$$; \
  sed 's,\($*\)\.o[ :]*,lib-\1.o $@ : ,g' < $@.$$$$ > $@; \
  rm -f $@.$$$$; echo '(re)building $@'

lib-%.d: $(LIB_DIR)/%.cpp Makefile
	@set -e; rm -f $@; \
  $(CXX) -MM $(CXXFLAGS) $< > $@.$$$$; \
  sed 's,\($*\)\.o[ :]*,lib-\1.o $@ : ,g' < $@.$$$$ > $@; \
  rm -f $@.$$$$; echo '(re)building $@'


ifneq ($(MAKECMDGOALS),distclean)
-include $(DEP)
-include $(CXX_DEP)
-include $(DEP_LIB)
-include $(CXX_DEP_LIB)
endif

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

%.o: %.cpp Makefile
	$(CXX) $(CXXFLAGS) -c $< -o $@

lib-%.o: $(LIB_DIR)/%.c Makefile
	$(CC) $(CFLAGS) -c $< -o $@

lib-%.o: $(LIB_DIR)/%.cpp Makefile
	$(CXX) $(CXXFLAGS) -c $< -o $@

$(ELFFILE): $(OBJ_LIB) $(CXX_OBJ_LIB) $(EXTERNAL_LIBS:%=lib%.a) $(OBJ) $(CXX_OBJ)
	$(CC) $(LDFLAGS) $(OBJ) $(CXX_OBJ) $(OBJ_LIB) $(CXX_OBJ_LIB) $(EXTERNAL_LIBS:%=-l%) -o $@
	$(SIZE) $@
	@echo ""

$(HEXFILE): $(ELFFILE)
	$(OBJCOPY) -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@

clean: $(CLEAN_TARGETS)
	rm -f *.o
	rm -f *.d
	rm -f *.d.*
	rm -f $(ELFFILE)
	rm -f $(HEXFILE)

distclean: clean-external clean

### DFU-Programmer
define DFU/erase
	$(DFU) $(MCU) erase || true
endef

define DFU/flash
	$(DFU) $(MCU) flash $1
endef

define DFU/run
	$(DFU) $(MCU) start
endef

### teensy-loader
define teensy/erase
endef

define teensy/flash
	$(teensy) -mmcu=$(MCU) -w -v $1
endef

define teensy/run
endef

### avrdude
define avrdude/erase
endef

define avrdude/flash
	$(avrdude) -V -F -p $(MCU) -P $(AVRDUDE_PORT) -c $(PROG_TYPE) -b $(UPLOAD_RATE) -U flash:w:$1
endef

define avrdude/run
	$(call generic/reset,)
endef

### avrdudeNoErase
define avrdudeNoErase/erase
endef

define avrdudeNoErase/flash
	$(avrdude) -V -F -p $(MCU) -P $(AVRDUDE_PORT) -c $(PROG_TYPE) -b $(UPLOAD_RATE) -D -U flash:w:$1
endef

define avrdudeNoErase/run
	$(call generic/reset,)
endef

### micronucleus
define micronucleus/erase
endef

define micronucleus/flash
	$(micronucleus) --run $1
endef

define micronucleus/run
endef

### Generic
define generic/reset
	@if [ -n "$(RESET_FUNC)" ]; then    \
    if [ -x "$(RESET_FUNC)" ]; then   \
      eval $(RESET_FUNC) $(RESET_PARAM);   \
    else                              \
      echo "WARNING: ignoring non-existing or non-executable reset script"; \
    fi                                \
  fi
endef

### Program Targets
program: reset erase flash run

erase:
	$(call $(PROG)/$@,)

flash: $(HEXFILE)
	$(call $(PROG)/$@,$(HEXFILE))

run:
	$(call $(PROG)/$@,)

reset:
	$(call generic/reset,)