# STM32F0xx Makefile
# #####################################
#
# Part of the uCtools project
# uctools.github.com
#
#######################################
# user configuration:
#######################################

BUILD_NUMBER ?= 0

# SOURCES: list of sources in the user application
SOURCES = main.c  adc.c gpio.c i2c.c interrupts.c uart.c  gps.c system_stm32f0xx.c system.c wspr.c rtc.c
# TARGET: name of the user application
TARGET = wsprhab-b$(BUILD_NUMBER)

# BUILD_DIR: directory to place output files in
BUILD_DIR = build

# LD_SCRIPT: location of the linker script
LD_SCRIPT = STM32F031G6_FLASH.ld

# USER_DEFS user defined macros
USER_DEFS = -D HSE_VALUE=16000000
USER_DEFS += -D WSPRHAB_BUILD_NUMBER=$(BUILD_NUMBER)

# USER_INCLUDES: user defined includes
USER_INCLUDES =

# USB_INCLUDES: includes for the usb library
# USB_INCLUDES = -IMiddlewares/ST/STM32_USB_Device_Library/Core/Inc
#USB_INCLUDES += -IMiddlewares/ST/STM32_USB_Device_Library/Class/CDC/Inc

SI5351_INCLUDES = -Ilib/si5351

JTENCODE_INCLUDES = -Ilib/jtencode

# USER_CFLAGS: user C flags (enable warnings, enable debug info)
USER_CFLAGS = -Wall -g -ffunction-sections -fdata-sections -Os -fno-common --function-sections -fdata-sections 
USER_CFLAGS += -flto

# USER_LDFLAGS:  user LD flags
USER_LDFLAGS = -fno-exceptions -ffunction-sections -fdata-sections -Wl,--gc-sections 
USER_LDFLAGS += -flto
USER_LDFLAGS += --static
#USER_LDFLAGS += -nostartfiles 

# TARGET_DEVICE: device to compile for
TARGET_DEVICE = STM32F031x6

#######################################
# end of user configuration
#######################################
#
#######################################
# binaries
#######################################
CC = arm-none-eabi-gcc
AR = arm-none-eabi-ar
RANLIB = arm-none-eabi-ranlib
SIZE = arm-none-eabi-size
OBJCOPY = arm-none-eabi-objcopy
MKDIR = mkdir -p
#######################################

# core and CPU type for Cortex M0
# ARM core type (CORE_M0, CORE_M3)
CORE = CORE_M0
# ARM CPU type (cortex-m0, cortex-m3)
CPU = cortex-m0

# where to build STM32Cube
CUBELIB_BUILD_DIR = $(BUILD_DIR)/STM32Cube

# various paths within the STmicro library
CMSIS_PATH = drivers/CMSIS
CMSIS_DEVICE_PATH = $(CMSIS_PATH)/Device/ST/STM32F0xx
DRIVER_PATH = drivers/STM32F0xx_HAL_Driver


# includes for gcc
INCLUDES = -I$(CMSIS_PATH)/Include
INCLUDES += -I$(CMSIS_DEVICE_PATH)/Include
INCLUDES += -I$(DRIVER_PATH)/Inc
INCLUDES += -Iinc
#INCLUDES += $(USB_INCLUDES)
INCLUDES += $(USER_INCLUDES)
INCLUDES += $(SI5351_INCLUDES)
INCLUDES += $(JTENCODE_INCLUDES)


# macros for gcc
DEFS = -D$(CORE) $(USER_DEFS) -D$(TARGET_DEVICE)

# compile gcc flags
CFLAGS = $(DEFS) $(INCLUDES)
# EMZ: Maybe remove -msoft-float
CFLAGS += -mcpu=$(CPU) -mthumb -msoft-float
CFLAGS += $(USER_CFLAGS)

# default action: build the user application
all: $(BUILD_DIR)/$(TARGET).bin $(BUILD_DIR)/$(TARGET).hex

flash: all
	st-flash write $(BUILD_DIR)/$(TARGET).bin 0x8000000


#######################################
# build the st micro peripherial library
# (drivers and CMSIS)
#######################################

CUBELIB = $(CUBELIB_BUILD_DIR)/libstm32cube.a

# List of stm32 driver objects
CUBELIB_DRIVER_OBJS = $(addprefix $(CUBELIB_BUILD_DIR)/, $(patsubst %.c, %.o, $(notdir $(wildcard $(DRIVER_PATH)/Src/*.c))))

# shortcut for building core library (make cubelib)
cubelib: $(CUBELIB)

$(CUBELIB): $(CUBELIB_DRIVER_OBJS)
	$(AR) rv $@ $(CUBELIB_DRIVER_OBJS)
	$(RANLIB) $@

$(CUBELIB_BUILD_DIR)/%.o: $(DRIVER_PATH)/Src/%.c | $(CUBELIB_BUILD_DIR)
	$(CC) -c $(CFLAGS) -o $@ $^

$(CUBELIB_BUILD_DIR):
	$(MKDIR) $@

#######################################
# build the USB library
#######################################
#USB_MIDDLEWARE_PATH = ./Middlewares/ST/STM32_USB_Device_Library/
#USB_BUILD_DIR = $(BUILD_DIR)/usb
#USB_SOURCES += usbd_ctlreq.c usbd_ioreq.c usbd_core.c usbd_cdc.c
# list of usb library objects
#USB_OBJECTS += $(addprefix $(USB_BUILD_DIR)/,$(notdir $(USB_SOURCES:.c=.o)))

#usb: $(USB_OBJECTS)

#$(USB_BUILD_DIR)/%.o: $(USB_MIDDLEWARE_PATH)/Core/Src/%.c | $(USB_BUILD_DIR)
#	$(CC) -Os $(CFLAGS) -c -o $@ $^
#
#$(USB_BUILD_DIR)/%.o: $(USB_MIDDLEWARE_PATH)/Class/CDC/Src/%.c | $(USB_BUILD_DIR)
#	$(CC) -Os $(CFLAGS) -c -o $@ $^

#$(USB_BUILD_DIR):
#	@echo $(USB_BUILD_DIR)
#	$(MKDIR) $@


#######################################
# build the user libraries
#######################################

# si5351
SI5351_PATH = ./lib/si5351/
SI5351_BUILD_DIR = $(BUILD_DIR)/si5351
SI5351_SOURCES += si5351.c

SI5351_OBJECTS += $(addprefix $(SI5351_BUILD_DIR)/,$(notdir $(SI5351_SOURCES:.c=.o)))

si5351: $(SI5351_OBJECTS)

$(SI5351_BUILD_DIR)/%.o: $(SI5351_PATH)/%.c | $(SI5351_BUILD_DIR)
	$(CC) -Os $(CFLAGS) -c -o $@ $^

$(SI5351_BUILD_DIR):
	@echo $(SI5351_BUILD_DIR)
	$(MKDIR) $@

# jtencode
JTENCODE_PATH = ./lib/jtencode/
JTENCODE_BUILD_DIR = $(BUILD_DIR)/jtencode
JTENCODE_SOURCES += jtencode.c init_rs_int.c encode_rs_int.c

JTENCODE_OBJECTS += $(addprefix $(JTENCODE_BUILD_DIR)/,$(notdir $(JTENCODE_SOURCES:.c=.o)))

jtencode: $(JTENCODE_OBJECTS)

$(JTENCODE_BUILD_DIR)/%.o: $(JTENCODE_PATH)/%.c | $(JTENCODE_BUILD_DIR)
	$(CC) -Os $(CFLAGS) -c -o $@ $^

$(JTENCODE_BUILD_DIR):
	@echo $(JTENCODE_BUILD_DIR)
	$(MKDIR) $@



#######################################
# build the user application
#######################################

# list of user program objects
OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(SOURCES:.c=.o)))
# add an object for the startup code
OBJECTS += $(BUILD_DIR)/startup_stm32f031x6.o

# use the periphlib core library, plus generic ones (libc, libm, libnosys)
LIBS = -lstm32cube -lc -lm -lnosys
LDFLAGS = -T $(LD_SCRIPT) -L $(CUBELIB_BUILD_DIR) -static $(LIBS) $(USER_LDFLAGS)

$(BUILD_DIR)/$(TARGET).hex: $(BUILD_DIR)/$(TARGET).elf
	$(OBJCOPY) -O ihex $(BUILD_DIR)/$(TARGET).elf $@

$(BUILD_DIR)/$(TARGET).bin: $(BUILD_DIR)/$(TARGET).elf
	$(OBJCOPY) -O binary $(BUILD_DIR)/$(TARGET).elf $@

#$(USB_OBJECTS) -o $(USB_OBJECTS)
$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) $(SI5351_OBJECTS) $(JTENCODE_OBJECTS) $(CUBELIB)
	$(CC) -o $@ $(CFLAGS) $(OBJECTS) $(SI5351_OBJECTS) $(JTENCODE_OBJECTS)  \
		$(LDFLAGS) -Xlinker \
		-Map=$(BUILD_DIR)/$(TARGET).map
	$(SIZE) $@

$(BUILD_DIR)/%.o: src/%.c | $(BUILD_DIR)
	$(CC) $(CFLAGS) -Os -c -o $@ $^

$(BUILD_DIR)/%.o: src/%.s | $(BUILD_DIR)
	$(CC) $(CFLAGS) -Os -c -o $@ $^

$(BUILD_DIR):
	$(MKDIR) $@

# delete all user application files, keep the libraries
clean:
		-rm $(BUILD_DIR)/*.o
		-rm $(BUILD_DIR)/*.elf
		-rm $(BUILD_DIR)/*.hex
		-rm $(BUILD_DIR)/*.map
		-rm $(BUILD_DIR)/*.bin

.PHONY: clean all cubelib