# Select the board to build for: if not given on the command line,
# then default to PYBV10.
BOARD ?= PYBV10
ifeq ($(wildcard boards/$(BOARD)/.),)
$(error Invalid BOARD specified)
endif

# If the build directory is not given, make it reflect the board name.
BUILD ?= build-$(BOARD)

include ../py/mkenv.mk
-include mpconfigport.mk
include boards/$(BOARD)/mpconfigboard.mk

# qstr definitions (must come before including py.mk)
QSTR_DEFS = qstrdefsport.h $(BUILD)/pins_qstr.h $(BUILD)/modstm_qstr.h

# include py core make definitions
include ../py/py.mk

LD_DIR=boards
CMSIS_DIR=cmsis
HAL_DIR=hal/$(MCU_SERIES)
USBDEV_DIR=usbdev
#USBHOST_DIR=usbhost
FATFS_DIR=lib/fatfs
DFU=../tools/dfu.py
# may need to prefix dfu-util with sudo
USE_PYDFU ?= 1
PYDFU ?= ../tools/pydfu.py
DFU_UTIL ?= dfu-util
DEVICE=0483:df11
STFLASH ?= st-flash
OPENOCD ?= openocd
OPENOCD_CONFIG ?= boards/openocd_stm32f4.cfg

CROSS_COMPILE = arm-none-eabi-

INC += -I.
INC += -I..
INC += -I$(BUILD)
INC += -I../lib/cmsis/inc
INC += -I$(CMSIS_DIR)/
INC += -I$(HAL_DIR)/inc
INC += -I$(USBDEV_DIR)/core/inc -I$(USBDEV_DIR)/class/inc
#INC += -I$(USBHOST_DIR)
INC += -I../lib/mp-readline
INC += -I../lib/netutils
INC += -I../lib/timeutils

CFLAGS_CORTEX_M = -mthumb -mabi=aapcs-linux -mfpu=fpv4-sp-d16 -mfloat-abi=hard -fsingle-precision-constant -Wdouble-promotion
CFLAGS_MCU_f4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4 -DMCU_SERIES_F4
CFLAGS_MCU_f7 = $(CFLAGS_CORTEX_M) -mtune=cortex-m7 -mcpu=cortex-m7 -DMCU_SERIES_F7
CFLAGS_MCU_l4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4 -DMCU_SERIES_L4

CFLAGS = $(INC) -Wall -Wpointer-arith -Werror -ansi -std=gnu99 -nostdlib $(CFLAGS_MOD)
CFLAGS += -D$(CMSIS_MCU)
CFLAGS += $(CFLAGS_MCU_$(MCU_SERIES))
CFLAGS += $(COPT)
CFLAGS += -Iboards/$(BOARD)
CFLAGS += -DSTM32_HAL_H='<stm32$(MCU_SERIES)xx_hal.h>'

LDFLAGS = -nostdlib -L $(LD_DIR) -T $(LD_FILE) -Map=$(@:.elf=.map) --cref
LIBS =

# Remove uncalled code from the final image.
CFLAGS += -fdata-sections -ffunction-sections
LDFLAGS += --gc-sections

# Debugging/Optimization
ifeq ($(DEBUG), 1)
CFLAGS += -g -DPENDSV_DEBUG
COPT = -O0
else
COPT += -Os -DNDEBUG
endif

# uncomment this if you want libgcc
#LIBS += $(shell $(CC) -print-libgcc-file-name)

SRC_LIB = $(addprefix lib/,\
	libc/string0.c \
	libm/math.c \
	libm/asinfacosf.c \
	libm/atanf.c \
	libm/atan2f.c \
	libm/fmodf.c \
	libm/roundf.c \
	libm/log1pf.c \
	libm/acoshf.c \
	libm/asinhf.c \
	libm/atanhf.c \
	libm/kf_rem_pio2.c \
	libm/kf_sin.c \
	libm/kf_cos.c \
	libm/kf_tan.c \
	libm/ef_rem_pio2.c \
	libm/erf_lgamma.c \
	libm/sf_sin.c \
	libm/sf_cos.c \
	libm/sf_tan.c \
	libm/sf_frexp.c \
	libm/sf_modf.c \
	libm/sf_ldexp.c \
	libm/sf_erf.c \
	libm/wf_lgamma.c \
	libm/wf_tgamma.c \
	fatfs/ff.c \
	fatfs/option/ccsbcs.c \
	mp-readline/readline.c \
	netutils/netutils.c \
	timeutils/timeutils.c \
	utils/pyexec.c \
	utils/pyhelp.c \
	)

SRC_C = \
	main.c \
	system_stm32.c \
	stm32_it.c \
	usbd_conf.c \
	usbd_desc.c \
	usbd_cdc_interface.c \
	usbd_msc_storage.c \
	mphalport.c \
	irq.c \
	pendsv.c \
	systick.c  \
	timer.c \
	led.c \
	pin.c \
	pin_defs_stmhal.c \
	pin_named_pins.c \
	bufhelper.c \
	dma.c \
	i2c.c \
	spi.c \
	uart.c \
	can.c \
	usb.c \
	wdt.c \
	gccollect.c \
	pybstdio.c \
	help.c \
	input.c \
	modmachine.c \
	modpyb.c \
	modstm.c \
	moduos.c \
	modutime.c \
	moduselect.c \
	modusocket.c \
	modnetwork.c \
	import.c \
	lexerfatfs.c \
	extint.c \
	usrsw.c \
	rng.c \
	rtc.c \
	flash.c \
	storage.c \
	builtin_open.c \
	sdcard.c \
	fatfs_port.c \
	lcd.c \
	accel.c \
	servo.c \
	dac.c \
	adc.c \
	$(wildcard boards/$(BOARD)/*.c)

SRC_O = \
	startup_stm32.o \
	gchelper.o \

SRC_HAL = $(addprefix $(HAL_DIR)/src/stm32$(MCU_SERIES)xx_,\
	hal.c \
	hal_adc.c \
	hal_adc_ex.c \
	hal_can.c \
	hal_cortex.c \
	hal_dac.c \
	hal_dac_ex.c \
	hal_dma.c \
	hal_flash.c \
	hal_flash_ex.c \
	hal_gpio.c \
	hal_i2c.c \
	hal_pcd.c \
	hal_pcd_ex.c \
	hal_pwr.c \
	hal_pwr_ex.c \
	hal_rcc.c \
	hal_rcc_ex.c \
	hal_rng.c \
	hal_rtc.c \
	hal_rtc_ex.c \
	hal_sd.c \
	hal_spi.c \
	hal_tim.c \
	hal_tim_ex.c \
	hal_uart.c \
	ll_sdmmc.c \
	ll_usb.c \
	)

SRC_USBDEV = $(addprefix $(USBDEV_DIR)/,\
	core/src/usbd_core.c \
	core/src/usbd_ctlreq.c \
	core/src/usbd_ioreq.c \
	class/src/usbd_cdc_msc_hid.c \
	class/src/usbd_msc_bot.c \
	class/src/usbd_msc_scsi.c \
	class/src/usbd_msc_data.c \
	)

ifeq ($(MICROPY_PY_WIZNET5K),1)
WIZNET5K_DIR=drivers/wiznet5k
INC += -I$(TOP)/$(WIZNET5K_DIR)
CFLAGS_MOD += -DMICROPY_PY_WIZNET5K=1
SRC_MOD += modnwwiznet5k.c
SRC_MOD += $(addprefix $(WIZNET5K_DIR)/,\
	ethernet/w5200/w5200.c \
	ethernet/wizchip_conf.c \
	ethernet/socket.c \
	internet/dns/dns.c \
	)
endif

# for CC3000 module
ifeq ($(MICROPY_PY_CC3K),1)
CC3000_DIR=drivers/cc3000
INC += -I$(TOP)/$(CC3000_DIR)/inc
CFLAGS_MOD += -DMICROPY_PY_CC3K=1
SRC_MOD += modnwcc3k.c
SRC_MOD += $(addprefix $(CC3000_DIR)/src/,\
	cc3000_common.c \
	evnt_handler.c \
	hci.c \
	netapp.c \
	nvmem.c \
	security.c \
	socket.c \
	wlan.c \
	ccspi.c \
	inet_ntop.c \
	inet_pton.c \
	patch.c \
	patch_prog.c \
	)
endif

OBJ =
OBJ += $(PY_O)
OBJ += $(addprefix $(BUILD)/, $(SRC_LIB:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_O))
OBJ += $(addprefix $(BUILD)/, $(SRC_HAL:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_USBDEV:.c=.o))
OBJ += $(addprefix $(BUILD)/, $(SRC_MOD:.c=.o))
OBJ += $(BUILD)/pins_$(BOARD).o

# We put ff.o and stm32f4xx_hal_sd.o into the first 16K section with the ISRs.
# If we compile these using -O0 then it won't fit. So if you really want these
# to be compiled with -O0, then edit stm32f405.ld (in the .isr_vector section)
# and comment out the following 2 lines.
$(BUILD)/$(FATFS_DIR)/ff.o: COPT += -Os
$(BUILD)/$(HAL_DIR)/src/stm32$(MCU_SERIES)xx_hal_sd.o: COPT += -Os

all: $(BUILD)/firmware.dfu $(BUILD)/firmware.hex

ifneq ($(FROZEN_DIR),)
CFLAGS += -DMICROPY_MODULE_FROZEN_STR
OBJ += $(BUILD)/frozen-files.o
MAKE_FROZEN = ../tools/make-frozen.py

$(BUILD)/frozen-files.o: $(BUILD)/frozen-files.c
	$(call compile_c)

$(BUILD)/frozen-files.c: $(shell find $(FROZEN_DIR) -type f)
	@$(ECHO) "Creating $@"
	$(Q)$(PYTHON) $(MAKE_FROZEN) $(FROZEN_DIR) > $@
endif

ifneq ($(FROZEN_MPY_DIR),)
# To use frozen bytecode, put your .py files in a subdirectory (eg frozen/) and
# then invoke make with FROZEN_MPY_DIR=frozen (be sure to build from scratch).
FROZEN_MPY_PY_FILES := $(shell find -L $(FROZEN_MPY_DIR) -type f -name '*.py')
FROZEN_MPY_MPY_FILES := $(addprefix $(BUILD)/,$(FROZEN_MPY_PY_FILES:.py=.mpy))
CFLAGS += -DMICROPY_QSTR_EXTRA_POOL=mp_qstr_frozen_const_pool
CFLAGS += -DMICROPY_MODULE_FROZEN_MPY
OBJ += $(BUILD)/$(BUILD)/frozen_mpy.o
MPY_CROSS = ../mpy-cross/mpy-cross
MPY_TOOL = ../tools/mpy-tool.py

$(BUILD)/$(FROZEN_MPY_DIR)/%.mpy: $(FROZEN_MPY_DIR)/%.py
	@$(ECHO) "MPY $<"
	$(Q)$(MKDIR) -p $(dir $@)
	$(Q)$(MPY_CROSS) -o $@ -s $(^:$(FROZEN_MPY_DIR)/%=%) $^

$(BUILD)/frozen_mpy.c: $(FROZEN_MPY_MPY_FILES) $(BUILD)/genhdr/qstrdefs.generated.h
	@$(ECHO) "Creating $@"
	$(Q)$(PYTHON) $(MPY_TOOL) -f -q $(BUILD)/genhdr/qstrdefs.preprocessed.h $(FROZEN_MPY_MPY_FILES) > $@
endif

.PHONY: deploy

deploy: $(BUILD)/firmware.dfu
	$(ECHO) "Writing $< to the board"
ifeq ($(USE_PYDFU),1)
	$(Q)$(PYTHON) $(PYDFU) -u $<
else
	$(Q)$(DFU_UTIL) -a 0 -d $(DEVICE) -D $<
endif

deploy-stlink: $(BUILD)/firmware.dfu
	$(ECHO) "Writing $(BUILD)/firmware0.bin to the board via ST-LINK"
	$(Q)$(STFLASH) write $(BUILD)/firmware0.bin 0x08000000
	$(ECHO) "Writing $(BUILD)/firmware1.bin to the board via ST-LINK"
	$(Q)$(STFLASH) --reset write $(BUILD)/firmware1.bin 0x08020000

deploy-openocd: $(BUILD)/firmware.dfu
	$(ECHO) "Writing $(BUILD)/firmware{0,1}.bin to the board via ST-LINK using OpenOCD"
	$(Q)$(OPENOCD) -f $(OPENOCD_CONFIG) -c "stm_flash $(BUILD)/firmware0.bin $(BUILD)/firmware1.bin"

$(BUILD)/firmware.dfu: $(BUILD)/firmware.elf
	$(ECHO) "Create $@"
	$(Q)$(OBJCOPY) -O binary -j .isr_vector $^ $(BUILD)/firmware0.bin
	$(Q)$(OBJCOPY) -O binary -j .text -j .data $^ $(BUILD)/firmware1.bin
	$(Q)$(PYTHON) $(DFU) -b 0x08000000:$(BUILD)/firmware0.bin -b 0x08020000:$(BUILD)/firmware1.bin $@

$(BUILD)/firmware.hex: $(BUILD)/firmware.elf
	$(ECHO) "Create $@"
	$(Q)$(OBJCOPY) -O ihex $< $@

$(BUILD)/firmware.elf: $(OBJ)
	$(ECHO) "LINK $@"
	$(Q)$(LD) $(LDFLAGS) -o $@ $^ $(LIBS)
	$(Q)$(SIZE) $@

MAKE_PINS = boards/make-pins.py
BOARD_PINS = boards/$(BOARD)/pins.csv
PREFIX_FILE = boards/stm32f4xx_prefix.c
GEN_PINS_SRC = $(BUILD)/pins_$(BOARD).c
GEN_PINS_HDR = $(HEADER_BUILD)/pins.h
GEN_PINS_QSTR = $(BUILD)/pins_qstr.h
GEN_PINS_AF_CONST = $(HEADER_BUILD)/pins_af_const.h
GEN_PINS_AF_PY = $(BUILD)/pins_af.py

INSERT_USB_IDS = ../tools/insert-usb-ids.py
FILE2H = ../tools/file2h.py

USB_IDS_FILE = usb.h
CDCINF_TEMPLATE = pybcdc.inf_template
GEN_CDCINF_FILE = $(HEADER_BUILD)/pybcdc.inf
GEN_CDCINF_HEADER = $(HEADER_BUILD)/pybcdc_inf.h

# List of sources for qstr extraction
SRC_QSTR += $(SRC_C) $(SRC_MOD) $(SRC_LIB)
# Append any auto-generated sources that are needed by sources listed in
# SRC_QSTR
SRC_QSTR_AUTO_DEPS += $(GEN_CDCINF_HEADER)

# Making OBJ use an order-only depenedency on the generated pins.h file
# has the side effect of making the pins.h file before we actually compile
# any of the objects. The normal dependency generation will deal with the
# case when pins.h is modified. But when it doesn't exist, we don't know
# which source files might need it.
$(OBJ): | $(HEADER_BUILD)/pins.h

# With conditional pins, we may need to regenerate qstrdefs.h when config
# options change.
$(HEADER_BUILD)/qstrdefs.generated.h: boards/$(BOARD)/mpconfigboard.h

# main.c can't be even preprocessed without $(GEN_CDCINF_HEADER)
main.c: $(GEN_CDCINF_HEADER)

# Use a pattern rule here so that make will only call make-pins.py once to make
# both pins_$(BOARD).c and pins.h
$(BUILD)/%_$(BOARD).c $(HEADER_BUILD)/%.h $(HEADER_BUILD)/%_af_const.h $(BUILD)/%_qstr.h: boards/$(BOARD)/%.csv $(MAKE_PINS) $(AF_FILE) $(PREFIX_FILE) | $(HEADER_BUILD)
	$(ECHO) "Create $@"
	$(Q)$(PYTHON) $(MAKE_PINS) --board $(BOARD_PINS) --af $(AF_FILE) --prefix $(PREFIX_FILE) --hdr $(GEN_PINS_HDR) --qstr $(GEN_PINS_QSTR) --af-const $(GEN_PINS_AF_CONST) --af-py $(GEN_PINS_AF_PY) > $(GEN_PINS_SRC)

$(BUILD)/pins_$(BOARD).o: $(BUILD)/pins_$(BOARD).c
	$(call compile_c)

GEN_STMCONST_HDR = $(HEADER_BUILD)/modstm_const.h
GEN_STMCONST_QSTR = $(BUILD)/modstm_qstr.h
GEN_STMCONST_MPZ = $(HEADER_BUILD)/modstm_mpz.h
CMSIS_MCU_LOWER = $(shell echo $(CMSIS_MCU) | tr '[:upper:]' '[:lower:]')
CMSIS_MCU_HDR = cmsis/$(CMSIS_MCU_LOWER).h

$(BUILD)/modstm.o: $(GEN_STMCONST_HDR)
# Use a pattern rule here so that make will only call make-stmconst.py once to
# make both modstm_const.h and modstm_qstr.h
$(HEADER_BUILD)/%_const.h $(BUILD)/%_qstr.h: $(CMSIS_MCU_HDR) make-stmconst.py | $(HEADER_BUILD)
	$(ECHO) "Create stmconst $@"
	$(Q)$(PYTHON) make-stmconst.py --qstr $(GEN_STMCONST_QSTR) --mpz $(GEN_STMCONST_MPZ) $(CMSIS_MCU_HDR) > $(GEN_STMCONST_HDR)

$(GEN_CDCINF_HEADER): $(GEN_CDCINF_FILE) $(FILE2H) | $(HEADER_BUILD)
	$(ECHO) "Create $@"
	$(Q)$(PYTHON) $(FILE2H) $< > $@

$(GEN_CDCINF_FILE): $(CDCINF_TEMPLATE) $(INSERT_USB_IDS) $(USB_IDS_FILE) | $(HEADER_BUILD)
	$(ECHO) "Create $@"
	$(Q)$(PYTHON) $(INSERT_USB_IDS) $(USB_IDS_FILE) $< > $@

include ../py/mkrules.mk