# Application number and version info are included in the ELF file
# symbol table through two global, asbolute symbols. Use nm(1) on an
# ELF file to figure things out. Example:
#   nm cc20rng.elf | awk '/VERSION/{print $1}'

# Application number:
# - cc20rng: 01
# - entropy: 02
APPLICATION = 0x00000001

# Version info is four octects, from most significant to least:
# - Major version, two bytes: 00..FFFF
# - Minor version, one byte: 00..FF
# - Patch level, one byte: 00..FF
VERSION = 0x00010000

# put your *.o targets here, make should handle the rest!
SRCS = main.c stm_init.c system_stm32f4xx.c stm32f4xx_it.c stm32f4xx_hal_msp.c cc20_prng.c

# all the files will be generated with this name
PROJ_NAME=cc20rng

TOPLEVEL=../..
include $(TOPLEVEL)/common.mk


OBJS = $(SRCS:.c=.o)

###################################################

.PHONY: lib proj

all: lib proj

lib:
	$(MAKE) -C $(STD_PERIPH_LIB) STDPERIPH_SETTINGS="$(STDPERIPH_SETTINGS)"


proj: 	$(PROJ_NAME).elf

$(PROJ_NAME).elf: $(SRCS)
	$(CC) $(CFLAGS) $^ -o $@ -L$(STD_PERIPH_LIB) -lstmf4 -L$(LDSCRIPT_INC) -T$(MCU_LINKSCRIPT) -g -Wl,--defsym=APPLICATION=$(APPLICATION) -Wl,--defsym=VERSION=$(VERSION)
	$(OBJCOPY) -O ihex $(PROJ_NAME).elf $(PROJ_NAME).hex
	$(OBJCOPY) -O binary $(PROJ_NAME).elf $(PROJ_NAME).bin
	$(OBJDUMP) -St $(PROJ_NAME).elf >$(PROJ_NAME).lst
	$(SIZE) $(PROJ_NAME).elf

c-format:
	clang-format-4.0 -i cc20_prng.[ch]
	clang-format-4.0 -style="{IndentWidth: 2}" -i main.c

clean:
	rm -f *.o
	rm -f $(PROJ_NAME).elf
	rm -f $(PROJ_NAME).hex
	rm -f $(PROJ_NAME).bin
	rm -f $(PROJ_NAME).map
	rm -f $(PROJ_NAME).lst

really-clean: clean
	$(MAKE) -C $(STD_PERIPH_LIB) clean

debug:
    $(GDB) -ex "target remote localhost:3333" \
        -ex "set remote hardware-breakpoint-limit 6" \
        -ex "set remote hardware-watchpoint-limit 4" $(PROJ_NAME).elf

flash-target:
	$(OPENOCD) -f $(OPENOCD_BOARD_DIR)/$(OPENOCD_PROC_FILE) \
		-c "program $(PROJ_NAME).elf verify" -c "reset"

# test program not using cross compiling
test: clean test.c cc20_prng.c
	cc -DCHACHA20_PRNG_DEBUG -O2 -g -o test test.c cc20_prng.c
	./test