diff --git a/Makefile b/Makefile
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+# STM32F0xx Makefile
+# #####################################
+#
+# Part of the uCtools project
+# uctools.github.com
+#
+#######################################
+# user configuration:
+#######################################
+
+
+# SOURCES: list of sources in the user application
+SOURCES = main.c usbd_conf.c usbd_cdc_if.c usb_device.c usbd_desc.c stm32f0xx_hal_msp.c stm32f0xx_it.c system_stm32f0xx.c gpio.c spi.c ssd1306.c stringhelpers.c eeprom_min.c
+
+# TARGET: name of the user application
+TARGET = main
+
+# BUILD_DIR: directory to place output files in
+BUILD_DIR = build
+
+# LD_SCRIPT: location of the linker script
+LD_SCRIPT = stm32f042c6_flash.ld
+
+# USER_DEFS user defined macros
+USER_DEFS = -D HSI48_VALUE=48000000 -D HSE_VALUE=16000000
+# 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
+
+# USER_CFLAGS: user C flags (enable warnings, enable debug info)
+USER_CFLAGS = -Wall -g -ffunction-sections -fdata-sections -Os
+# USER_LDFLAGS:  user LD flags
+USER_LDFLAGS = -fno-exceptions -ffunction-sections -fdata-sections -Wl,--gc-sections
+
+# TARGET_DEVICE: device to compile for
+TARGET_DEVICE = STM32F042x6
+
+#######################################
+# 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 += -I$(CURDIR)
+INCLUDES += -I$(CURDIR)/usb
+INCLUDES += $(USB_INCLUDES)
+INCLUDES += $(USER_INCLUDES)
+
+# macros for gcc
+DEFS = -D$(CORE) $(USER_DEFS) -D$(TARGET_DEVICE)
+
+# compile gcc flags
+CFLAGS = $(DEFS) $(INCLUDES)
+CFLAGS += -mcpu=$(CPU) -mthumb
+CFLAGS += $(USER_CFLAGS)
+
+# default action: build the user application
+all: $(BUILD_DIR)/$(TARGET).hex
+
+#######################################
+# 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 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_stm32f042x6.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) $(LIBS) $(USER_LDFLAGS)
+
+$(BUILD_DIR)/$(TARGET).hex: $(BUILD_DIR)/$(TARGET).elf
+	$(OBJCOPY) -O ihex $(BUILD_DIR)/$(TARGET).elf $@
+	$(OBJCOPY) -O binary $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).bin
+
+$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) $(USB_OBJECTS) $(CUBELIB)
+	$(CC) -o $@ $(CFLAGS) $(USER_LDFLAGS) $(OBJECTS) $(USB_OBJECTS) \
+		-L$(CUBELIB_BUILD_DIR) -static $(LIBS) -Xlinker \
+		-Map=$(BUILD_DIR)/$(TARGET).map \
+		-T $(LD_SCRIPT)
+	$(SIZE) $@
+
+$(BUILD_DIR)/%.o: %.c | $(BUILD_DIR)
+	$(CC) $(CFLAGS) -Os -c -o $@ $^
+
+$(BUILD_DIR)/%.o: %.s | $(BUILD_DIR)
+	$(CC) $(CFLAGS) -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)/*.bin
+		-rm $(BUILD_DIR)/*.map
+
+.PHONY: clean all cubelib