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# Location of build tools
CC=avr-gcc
CXX=avr-g++
OBJCOPY=avr-objcopy
SIZE=avr-size
AVRDUDE=avrdude
# Modify this to the device name of the UART used for AVRDUDE
AVRDUDE_DEV=usb
PROG = dragon_isp
# Modify this to the CPU you are using
PART=atmega328p
AVRDUDE_PART=m328p
# Cpu frequency is 16MHz, divider = 8
F_CPU="(16000000UL/8)"
# Directory for built objects
BUILD_DIR=build
# Port/application object files
APP_NAME = sw
HEADERS = \
lib/Arduino.h \
lib/DallasTemperature.h \
lib/delay.h \
lib/OneWire.h \
lib/pins_arduino.h \
lib/uart.h \
lib/util/OneWire_direct_gpio.h \
lib/util/OneWire_direct_regtype.h
# Application object files
APP_CXX_OBJECTS = main.o ltc2400.o
APP_OBJECTS =
# Library object files to build and use
LIB_OBJECTS = uart.o
LIB_CXX_OBJECTS = OneWire.o DallasTemperature.o
LIB_ASM_OBJECTS =
LIB_DIR = lib
# Collection of built objects
ALL_OBJECTS = $(LIB_OBJECTS) $(LIB_ASM_OBJECTS) $(LIB_CXX_OBJECTS) $(APP_OBJECTS) $(APP_CXX_OBJECTS)
BUILT_OBJECTS = $(patsubst %,$(BUILD_DIR)/%,$(ALL_OBJECTS))
# Target application filenames (.elf and .hex) for each application object
APP_ELF = $(APP_NAME).elf
APP_HEX = $(APP_NAME).hex
# Search build/output directory for dependencies
vpath %.o ./$(BUILD_DIR)
vpath %.elf ./$(BUILD_DIR)
vpath %.hex ./$(BUILD_DIR)
# GCC flags
DEFINES=-DUART_RX0_BUFFER_SIZE=64 -DUART_TX0_BUFFER_SIZE=64 -DARDUINO=180
FLAGS=-g -mmcu=$(PART) -Os -Wall -Wextra -DF_CPU=$(F_CPU) $(DEFINES) -ffunction-sections -fdata-sections -MMD -flto -fno-fat-lto-objects
CFLAGS=$(FLAGS) -std=c99
CXXFLAGS=$(FLAGS) -std=c++11 -fno-exceptions -fno-threadsafe-statics
INCLUDES=-I. -I$(LIB_DIR)
#################
# Build targets #
#################
# All applications
all: $(BUILD_DIR) $(APP_HEX) Makefile
# Make build/output directory
$(BUILD_DIR):
mkdir $(BUILD_DIR)
# Application HEX files
$(APP_HEX): %.hex: %.elf
@echo Building $@
$(OBJCOPY) -j .text -j .data -O ihex $(BUILD_DIR)/$< $(BUILD_DIR)/$@
# Application ELF files
$(APP_ELF): %.elf: $(LIB_OBJECTS) $(LIB_CXX_OBJECTS) $(LIB_ASM_OBJECTS) $(APP_OBJECTS) $(APP_CXX_OBJECTS)
$(CXX) $(CXXFLAGS) $(BUILT_OBJECTS) --output $(BUILD_DIR)/$@ -flto -fuse-linker-plugin -Wl,--gc-sections -Wl,-Map,$(BUILD_DIR)/$(basename $@).map
# Application objects builder
$(APP_OBJECTS): %.o: %.c $(HEADERS)
$(CC) -c $(CFLAGS) $(INCLUDES) $< -o $(BUILD_DIR)/$(notdir $@)
$(APP_CXX_OBJECTS): %.o: %.cpp $(HEADERS)
$(CXX) -c $(CXXFLAGS) $(INCLUDES) $< -o $(BUILD_DIR)/$(notdir $@)
# Application objects builder
$(LIB_OBJECTS): %.o: $(LIB_DIR)/%.c $(HEADERS)
$(CC) -c $(CFLAGS) $(INCLUDES) $< -o $(BUILD_DIR)/$(notdir $@)
$(LIB_CXX_OBJECTS): %.o: $(LIB_DIR)/%.cpp $(HEADERS)
$(CXX) -c $(CXXFLAGS) $(INCLUDES) $< -o $(BUILD_DIR)/$(notdir $@)
$(LIB_ASM_OBJECTS): %.o: $(LIB_DIR)/%.s
$(CC) -c $(CFLAGS) -x assembler-with-cpp -flto -MMD $(INCLUDES) $< -o $(BUILD_DIR)/$(notdir $@)
# .lst file builder
%.lst: %.c $(HEADERS)
$(CC) $(CFLAGS) $(INCLUDES) -Wa,-al $< > $@
%.lst: %.cpp $(HEADERS)
$(CXX) $(CXXFLAGS) $(INCLUDES) -Wa,-al $< > $@
# Clean
clean:
rm -f *.o *.elf *.map *.hex *.bin *.lst
rm -rf doxygen-avr
rm -rf build
# Send to device
program: $(APP_HEX)
$(SIZE) -C $(BUILD_DIR)/$(APP_ELF)
$(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(AVRDUDE_DEV) -p $(AVRDUDE_PART) -U flash:w:$(BUILD_DIR)/$(APP_HEX) -v
fuse:
$(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(AVRDUDE_DEV) -p $(AVRDUDE_PART) -U lfuse:w:0x60:m -U hfuse:w:0xdc:m -U efuse:w:0xff:m -v
interactive:
$(AVRDUDE) $(AVRDUDE_FLAGS) -c $(PROG) -P $(AVRDUDE_DEV) -p $(AVRDUDE_PART) -t -v
doxygen:
doxygen ./Doxyfile
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