TARGET = stm32-usb-freertos
BUILD_DIR = Build

# Приложение
C_SOURCES =  \
App/Src/main.c \
App/Src/audio_adc.c \
App/Src/audio_processor.c \
App/Src/usb_descriptors.c \
App/Src/system_stm32f1xx.c \

# FreeRTOS
C_SOURCES += \
Middlewares/FreeRTOS/croutine.c \
Middlewares/FreeRTOS/event_groups.c \
Middlewares/FreeRTOS/list.c \
Middlewares/FreeRTOS/queue.c \
Middlewares/FreeRTOS/tasks.c \
Middlewares/FreeRTOS/timers.c \
Middlewares/FreeRTOS/portable/GCC/ARM_CM3/port.c \
Middlewares/FreeRTOS/portable/MemMang/heap_4.c

# TinyUSB
C_SOURCES += \
Middlewares/TinyUSB/src/tusb.c \
Middlewares/TinyUSB/src/common/tusb_fifo.c \
Middlewares/TinyUSB/src/device/usbd.c \
Middlewares/TinyUSB/src/device/usbd_control.c \
Middlewares/TinyUSB/src/class/cdc/cdc_device.c \
Middlewares/TinyUSB/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c

# CMSIS-DSP sources
C_SOURCES += \
$(CMSIS_DSP)/Source/TransformFunctions/arm_cfft_radix8_f32.c \
$(CMSIS_DSP)/Source/TransformFunctions/arm_bitreversal2.c \
$(CMSIS_DSP)/Source/TransformFunctions/arm_rfft_fast_f32.c \
$(CMSIS_DSP)/Source/TransformFunctions/arm_rfft_fast_init_f32.c \
$(CMSIS_DSP)/Source/TransformFunctions/arm_cfft_f32.c \
$(CMSIS_DSP)/Source/TransformFunctions/arm_cfft_init_f32.c \
$(CMSIS_DSP)/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c \
$(CMSIS_DSP)/Source/CommonTables/arm_const_structs.c \
$(CMSIS_DSP)/Source/CommonTables/arm_common_tables.c \
$(CMSIS_DSP)/Source/FastMathFunctions/arm_cos_f32.c

# CMSIS-DSP
CMSIS_DSP = Middlewares/CMSIS-DSP

# Startup
ASM_SOURCES = App/Src/startup_stm32f103xb.s

# --- Настройки компилятора ---
PREFIX = arm-none-eabi-
CC = $(PREFIX)gcc
AS = $(PREFIX)gcc -x assembler-with-cpp
CP = $(PREFIX)objcopy
SZ = $(PREFIX)size

MCU = -mcpu=cortex-m3 -mthumb

# Includes
C_INCLUDES =  \
-IApp/Inc \
-IDrivers/CMSIS/Core/Include \
-IDrivers/CMSIS/Device/ST/STM32F1xx/Include \
-IMiddlewares/FreeRTOS/include \
-IMiddlewares/FreeRTOS/portable/GCC/ARM_CM3 \
-IMiddlewares/TinyUSB/src \
-I$(CMSIS_DSP)/Include \
-I$(CMSIS_DSP)/PrivateInclude

# Defines
C_DEFS = \
-DSTM32F103xB \
-DCFG_TUSB_MCU=OPT_MCU_STM32F1 \
-DARM_MATH_CM3

CFLAGS = $(MCU) $(C_DEFS) $(C_INCLUDES) -Os -Wall -fdata-sections -ffunction-sections -g -gdwarf-2

# Linker
LDSCRIPT = stm32f103c8.ld
# LIBS = -lc -lm -lnosys
# LDFLAGS = $(MCU) -T$(LDSCRIPT) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections -Wl,--no-warn-rwx-segments
# LDFLAGS = $(MCU) -T$(LDSCRIPT) --specs=nano.specs --specs=nosys.specs \
#           -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections
LIBS = -Wl,--start-group -lc_nano -lm -lgcc -lnosys -Wl,--end-group
LDFLAGS = $(MCU) -T$(LDSCRIPT) $(LIBS) \
          -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref \
          -Wl,--gc-sections \
          -Wl,--no-warn-rwx-segments

# --- Генерация списка объектов ---
OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
vpath %.c $(sort $(dir $(C_SOURCES)))

OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASM_SOURCES:.s=.o)))
vpath %.s $(sort $(dir $(ASM_SOURCES)))

# --- Правила сборки ---
all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).bin

# Компиляция C файлов
$(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR)
	$(CC) -c $(CFLAGS) $< -o $@

# Компиляция ASM файлов
$(BUILD_DIR)/%.o: %.s Makefile | $(BUILD_DIR)
	$(AS) -c $(CFLAGS) $< -o $@

# Линковка
$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) Makefile
	$(CC) $(OBJECTS) $(LDFLAGS) -o $@
	$(SZ) $@

# Генерация HEX
$(BUILD_DIR)/%.hex: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(CP) -O ihex $< $@

# Генерация BIN
$(BUILD_DIR)/%.bin: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(CP) -O binary -S $< $@

# Создание директории Build
$(BUILD_DIR):
	mkdir -p $@

clean:
	rm -rf $(BUILD_DIR)

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

.PHONY: all clean flash