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+```makefile
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+# Copyright (c) 2016, James Jackson
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+# All rights reserved.
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+
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+# Redistribution and use in source and binary forms, with or without
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+# modification, are permitted provided that the following conditions are met:
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+
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+# 1. Redistributions of source code must retain the above copyright notice, this
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+# list of conditions and the following disclaimer.
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+# 2. Redistributions in binary form must reproduce the above copyright notice,
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+# this list of conditions and the following disclaimer in the documentation
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+# and/or other materials provided with the distribution.
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+
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+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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+
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+
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+TARGET ?= ledblink
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+
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+SERIAL_DEVICE ?= /dev/ttyUSB0
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+
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+#################################
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+# GNU ARM Embedded Toolchain
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+#################################
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+CC=arm-none-eabi-gcc
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+CXX=arm-none-eabi-g++
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+LD=arm-none-eabi-ld
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+AR=arm-none-eabi-ar
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+AS=arm-none-eabi-as
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+CP=arm-none-eabi-objcopy
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+OD=arm-none-eabi-objdump
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+NM=arm-none-eabi-nm
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+SIZE=arm-none-eabi-size
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+A2L=arm-none-eabi-addr2line
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+
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+#################################
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+# Working directories
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+#################################
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+BREEZY_DIR = ../../../
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+ROOT = .
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+SRC_DIR = $(ROOT)
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+CMSIS_DIR = $(BREEZY_DIR)/lib/CMSIS
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+STDPERIPH_DIR = $(BREEZY_DIR)/lib/STM32F10x_StdPeriph_Driver
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+OBJECT_DIR = $(ROOT)/obj
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+BIN_DIR = $(ROOT)/obj
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+
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+
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+#################################
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+# Source Files
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+#################################
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+ASOURCES = $(BREEZY_DIR)/startup_stm32f10x_md_gcc.s
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+
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+VPATH := $(SRC_DIR):$(SRC_DIR)/startups
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+
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+# Search path and source files for the CMSIS sources
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+VPATH := $(VPATH):$(CMSIS_DIR)/CM3/CoreSupport:$(CMSIS_DIR)/CM3/DeviceSupport/ST/STM32F10x
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+CMSIS_SRC = $(notdir $(wildcard $(CMSIS_DIR)/CM3/CoreSupport/*.c \
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+ $(CMSIS_DIR)/CM3/DeviceSupport/ST/STM32F10x/*.c))
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+
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+# Search path and source files for the ST stdperiph library
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+VPATH := $(VPATH):$(STDPERIPH_DIR)/src
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+STDPERIPH_SRC = $(notdir $(wildcard $(STDPERIPH_DIR)/src/*.c))
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+
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+CSOURCES = $(BREEZY_DIR)/drv_system_stm32f10x.c \
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+ $(BREEZY_DIR)/drv_uart_stm32f10x.c \
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+ $(BREEZY_DIR)/drv_gpio.c \
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+ $(BREEZY_DIR)/drv_i2c.c \
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+ $(BREEZY_DIR)/drv_adc.c \
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+ $(BREEZY_DIR)/drv_spi.c \
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+ $(BREEZY_DIR)/drv_pwm.c \
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+ $(BREEZY_DIR)/drv_serial.c \
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+ $(BREEZY_DIR)/drv_timer.c \
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+ $(BREEZY_DIR)/printf.c \
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+ $(CMSIS_SRC) \
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+ $(STDPERIPH_SRC)
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+
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+CXXSOURCES = $(ROOT)/ledblink.cpp \
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+ $(BREEZY_DIR)/main.cpp \
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+
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+INCLUDE_DIRS = $(SRC_DIR) \
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+ $(BREEZY_DIR) \
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+ $(STDPERIPH_DIR)/inc \
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+ $(CMSIS_DIR)/CM3/CoreSupport \
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+ $(CMSIS_DIR)/CM3/DeviceSupport/ST/STM32F10x
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+
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+
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+#################################
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+# Object List
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+#################################
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+OBJECTS=$(addsuffix .o,$(addprefix $(OBJECT_DIR)/$(TARGET),$(basename $(ASOURCES))))
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+OBJECTS+=$(addsuffix .o,$(addprefix $(OBJECT_DIR)/$(TARGET),$(basename $(CSOURCES))))
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+OBJECTS+=$(addsuffix .o,$(addprefix $(OBJECT_DIR)/$(TARGET),$(basename $(CXXSOURCES))))
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+
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+
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+#################################
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+# Target Output Files
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+#################################
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+TARGET_ELF=$(BIN_DIR)/$(TARGET).elf
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+TARGET_HEX=$(BIN_DIR)/$(TARGET).hex
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+
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+
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+#################################
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+# Flags
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+#################################
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+MCFLAGS=-mcpu=cortex-m3 -mthumb
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+OPTIMIZE = -Os
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+DEFS=-DTARGET_STM32F10X_MD -D__CORTEX_M4 -D__FPU_PRESENT -DWORDS_STACK_SIZE=200 -DSTM32F10X_MD -DUSE_STDPERIPH_DRIVER
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+CFLAGS=-c $(MCFLAGS) $(DEFS) $(OPTIMIZE) $(addprefix -I,$(INCLUDE_DIRS)) -std=c99
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+CXXFLAGS=-c $(MCFLAGS) $(DEFS) $(OPTIMIZE) $(addprefix -I,$(INCLUDE_DIRS)) -std=c++11
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+CXXFLAGS+=-U__STRICT_ANSI__
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+LDSCRIPT=$(BREEZY_DIR)/stm32_flash.ld
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+LDFLAGS =-T $(LDSCRIPT) $(MCFLAGS) -lm -nostartfiles -lc --specs=rdimon.specs $(ARCH_FLAGS) $(LTO_FLAGS) $(DEBUG_FLAGS) -static -Wl,-gc-sections
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+
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+#################################
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+# Build
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+#################################
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+$(TARGET_HEX): $(TARGET_ELF)
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+ $(CP) -O ihex --set-start 0x8000000 $< $@
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+
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+$(TARGET_ELF): $(OBJECTS)
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+ $(CXX) -o $@ $^ $(LDFLAGS)
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+ $(SIZE) $(TARGET_ELF)
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+
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+$(BIN_DIR)/$(TARGET)%.o: %.cpp
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+ @mkdir -p $(dir $@)
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+ @echo %% $(notdir $<)
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+ @$(CXX) -c -o $@ $(CXXFLAGS) $<
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+
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+$(BIN_DIR)/$(TARGET)%.o: %.c
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+ @mkdir -p $(dir $@)
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+ @echo %% $(notdir $<)
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+ @$(CC) -c -o $@ $(CFLAGS) $<
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+
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+$(BIN_DIR)/$(TARGET)%.o: %.s
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+ @mkdir -p $(dir $@)
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+ @echo %% $(notdir $<)
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+ @$(CC) -c -o $@ $(CFLAGS) $<
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+
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+
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+#################################
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+# Recipes
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+#################################
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+.PHONY: all flash clean
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+
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+clean:
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+ rm -f $(OBJECTS) $(TARGET_ELF) $(TARGET_HEX) $(BIN_DIR)/output.map
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+
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+flash: $(TARGET_HEX)
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+ stty -F $(SERIAL_DEVICE) raw speed 921600 -crtscts cs8 -parenb -cstopb -ixon
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+ stm32flash -w $(TARGET_HEX) -v -g 0x0 -b 921600 $(SERIAL_DEVICE)
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+
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+all: $(TARGET_HEX)
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+```
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