ROOT := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))

SOURCE_DIR = $(ROOT)/src

INCLUDE_DIR = $(SOURCE_DIR)

SOURCE_FILES_FOUND = $(wildcard $(SOURCE_DIR)/*.c)

SOURCE_FILES = $(SOURCE_FILES_FOUND:./src/%=%)

SOURCE_FILES += eeprom_emulation/st_eeprom.c

OBJECT_DIR := $(ROOT)/obj

BIN_DIR = $(ROOT)/bin

CFLAGS = -O1 -g

ASFLAGS = -g

DFU_UTIL ?= dfu-util

LIBNAME = opencm3_stm32f0

DEFS += -DSTM32F0

FP_FLAGS ?= -msoft-float

ARCH_FLAGS = -mthumb -mcpu=cortex-m0 $(FP_FLAGS)

LDSCRIPT = linker/stm32f072.ld

TARGET = openground

CFLAGS += -I./src

LDFLAGS += -L./src

ifneq ($(V),1)

Q := @

NULL := 2>/dev/null

PREFIX ?= arm-none-eabi

CC := $(PREFIX)-gcc

CXX := $(PREFIX)-g++

LD := $(PREFIX)-gcc

AR := $(PREFIX)-ar

AS := $(PREFIX)-as

OBJCOPY := $(PREFIX)-objcopy

OBJDUMP := $(PREFIX)-objdump

GDB := $(PREFIX)-gdb

STFLASH = $(shell which st-flash)

STYLECHECK := /checkpatch.pl

STYLECHECKFLAGS := --no-tree -f --terse --mailback

STYLECHECKFILES := $(shell find . -name '*.[ch]')

OPT := -Os

CSTD ?= -std=gnu99

OBJS += $(SOURCE_FILES:%.c=$(OBJECT_DIR)/%.o)

HEADER_FILES = $(SOURCE_FILES_FOUND:%.c=%.h)

LIBPATHS := ./libopencm3 ../../../../libopencm3 ../../../../../libopencm3

OPENCM3_DIR := ./libopencm3

ifeq ($(V),1)

$(info Using $(OPENCM3_DIR) path to library)

DEFS += -I$(OPENCM3_DIR)/include

LDFLAGS += -L$(OPENCM3_DIR)/lib

LDLIBS += -l$(LIBNAME)

SCRIPT_DIR = $(OPENCM3_DIR)/scripts

TGT_CFLAGS += $(OPT) $(CSTD) -g

TGT_CFLAGS += $(ARCH_FLAGS)

TGT_CFLAGS += -Wextra -Wshadow -Wimplicit-function-declaration

TGT_CFLAGS += -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes

TGT_CFLAGS += -fno-common -ffunction-sections -fdata-sections

TGT_CFLAGS += -MD -Wall -Wundef

TGT_CFLAGS += $(DEFS)

TGT_LDFLAGS += --static -nostartfiles

TGT_LDFLAGS += -T$(LDSCRIPT)

TGT_LDFLAGS += $(ARCH_FLAGS)

TGT_LDFLAGS += -Wl,-Map=$(*).map

TGT_LDFLAGS += -Wl,--gc-sections

ifeq ($(V),99)

TGT_LDFLAGS += -Wl,--print-gc-sections

LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group

.SUFFIXES: .elf .bin .hex .srec .list .map .images

.SECONDEXPANSION:

.SECONDARY:

all: stylecheck elf

elf: $(BIN_DIR)/$(TARGET).elf

bin: $(BIN_DIR)/$(TARGET).bin

hex: $(BIN_DIR)/$(TARGET).hex

srec: $(BIN_DIR)/$(TARGET).srec

list: $(BIN_DIR)/$(TARGET).list

images: $(BIN_DIR)/$(TARGET).images

flash: $(BIN_DIR)/$(TARGET).flash

$(LDSCRIPT):

ifeq (,$(wildcard $(LDSCRIPT)))

$(error Unable to find specified linker script: $(LDSCRIPT))

endif

print-%:

@echo $*=$($*)

$(BIN_DIR)/%.images: $(BIN_DIR)/%.bin $(BIN_DIR)/%.hex $(BIN_DIR)/%.srec $(BIN_DIR)/%.lst $(BIN_DIR)/%.map

@printf "*** $* images generated ***\n"

$(BIN_DIR)/%.bin: $(BIN_DIR)/%.elf

@printf " OBJCOPY $(*).bin\n"

$(Q)$(OBJCOPY) -Obinary $(BIN_DIR)/$(*).elf $(BIN_DIR)/$(*).bin

$(BIN_DIR)/%.hex: $(BIN_DIR)/%.elf

@printf " OBJCOPY $(*).hex\n"

$(Q)$(OBJCOPY) -Oihex $(BIN_DIR)/$(*).elf $(BIN_DIR)/$(*).hex

$(BIN_DIR)/%.srec: $(BIN_DIR)/%.elf

@printf " OBJCOPY $(*).srec\n"

$(Q)$(OBJCOPY) -Osrec $(BIN_DIR)/$(*).elf $(BIN_DIR)/$(*).srec

$(BIN_DIR)/%.lst: $(BIN_DIR)/%.elf

@printf " OBJDUMP $(*).lst\n"

$(Q)$(OBJDUMP) -S $(BIN_DIR)/$(*).elf > $(BIN_DIR)/$(*).lst

$(BIN_DIR)/%.elf $(BIN_DIR)/%.map: $(OBJS) $(LDSCRIPT) bin_dir

@printf " LD $(*).elf\n"

$(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $(BIN_DIR)/$(*).elf

$(OBJECT_DIR)/%.o: $(SOURCE_DIR)/%.c libopencm3 obj_dir src/hoptable.h

@printf " CC $(*).c\n"

$(Q)$(CC) $(TGT_CFLAGS) $(CFLAGS) -o $(OBJECT_DIR)/$(*).o -c $(SOURCE_DIR)/$(*).c

src/hoptable.h:

python ./scripts/generate_hoptable.py > src/hoptable.h

clean:

@#printf " CLEAN\n"

$(Q)$(RM) $(OBJECT_DIR)/*.o $(OBJECT_DIR)/*.d $(BIN_DIR)/*.elf $(BIN_DIR)*.bin $(BIN_DIR)*.hex $(BIN_DIR)/*.srec $(BIN_DIR)/*.lst $(BIN_DIR)/*.map generated.* ${OBJS} ${OBJS:%.o:%.d}

stylecheck: $(HEADER_FILES) $(SOURCE_FILES_FOUND)

@./stylecheck/cpplint.py --filter=-build/include,-build/storage_class,-readability/casting,-runtime/arrays --extensions="h,c" --root=src --linelength=120 $(HEADER_FILES) $(SOURCE_FILES_FOUND) || true

%.stlink-flash: %.bin

@printf " FLASH $<\n"

$(STFLASH) write $(*).bin 0x8000000

bin_dir:

@mkdir -p ${BIN_DIR}

obj_dir:

@mkdir -p ${OBJECT_DIR}

@mkdir -p ${OBJECT_DIR}/eeprom_emulation

ifeq ($(STLINK_PORT),)

ifeq ($(BMP_PORT),)

ifeq ($(OOCD_FILE),)

%.flash: %.elf

@printf " FLASH $<\n"

(echo "halt; program $(realpath $(*).elf) verify reset" | nc -4 localhost 4444 2>/dev/null) || \

$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \

-f target/$(OOCD_TARGET).cfg \

-c "program $(*).elf verify reset exit" \

$(NULL)

%.flash: %.elf

@printf " FLASH $<\n"

(echo "halt; program $(realpath $(*).elf) verify reset" | nc -4 localhost 4444 2>/dev/null) || \

$(OOCD) -f $(OOCD_FILE) \

-c "program $(*).elf verify reset exit" \

$(NULL)

%.flash: %.elf

@printf " GDB $(*).elf (flash)\n"

$(GDB) --batch \

-ex 'target extended-remote $(BMP_PORT)' \

-x $(SCRIPT_DIR)/black_magic_probe_flash.scr \

$(*).elf

%.flash: %.elf

@printf " GDB $(*).elf (flash)\n"

$(GDB) --batch \

-ex 'target extended-remote $(STLINK_PORT)' \

-x $(SCRIPT_DIR)/stlink_flash.scr \

$(*).elf

sterase :

st-flash erase

stflasherase : sterase stflash

stflash : $(BIN_DIR)/$(TARGET).bin

st-flash --reset write $(BIN_DIR)/$(TARGET).bin 0x8000000

dfu : $(BIN_DIR)/$(TARGET).bin

$(DFU_UTIL) -a 0 -D $(BIN_DIR)/$(TARGET).bin -s 0x08000000:leave -R

libopencm3 : libopencm3/lib/libopencm3_stm32f0.a submodules

libopencm3/lib/libopencm3_stm32f0.a:

$(MAKE) -C libopencm3

submodules:

@git submodule update --init -- libopencm3

.PHONY: images clean stylecheck styleclean elf bin hex srec list submodules bin_dir obj_dir stylecheck

-include $(OBJS:.o=.d)