Add makefile
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# Makefile for AVR C++ projects
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# From: https://gist.github.com/rynr/72734da4b8c7b962aa65
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# ----- Update the settings of your project here -----
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# Hardware
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MCU = atmega328p
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AVRDUDE_PARAMS = -c atmelice_isp
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FUSES = -U lfuse:w:0xff:m -U hfuse:w:0xd7:m -U efuse:w:0xfd:m
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# Parameters
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PROJECT = $(lastword $(subst /, ,$(CURDIR)))
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INCS =
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LIBS =
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DEFS = -DNDEBUG
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# ----- These configurations are quite likely not to be changed -----
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# Binaries
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GCC = avr-gcc
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G++ = avr-g++
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RM = rm -f
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AVRDUDE = avrdude
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OBJCOPY = avr-objcopy
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OBJDUMP = avr-objdump
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SIZE = avr-size
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# Files
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EXT_C = c
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EXT_C++ = cpp
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EXT_ASM = asm
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# ----- No changes should be necessary below this line -----
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OBJECTS = \
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$(patsubst %.$(EXT_C),%.o,$(wildcard *.$(EXT_C)) $(wildcard **/*.$(EXT_C))) \
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$(patsubst %.$(EXT_C++),%.o,$(wildcard *.$(EXT_C++)) $(wildcard **/*.$(EXT_C++))) \
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$(patsubst %.$(EXT_ASM),%.o,$(wildcard *.$(EXT_ASM)) $(wildcard **/*.$(EXT_ASM)))
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# Linker and compiler flags
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LDFLAGS = $(LIBS)
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LDFLAGS += -Wl,-Map=$(PROJECT).map
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LDFLAGS += -Wl,--gc-sections -mrelax
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CFLAGS = $(INCS)
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CFLAGS += $(DEFS)
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CFLAGS += -Os
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CFLAGS += -std=c17
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CFLAGS += -funsigned-char -funsigned-bitfields -fshort-enums -ffunction-sections -fdata-sections -fno-threadsafe-statics -mrelax
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CFLAGS += -Wall -Wextra -pedantic -Wstrict-prototypes
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CFLAGS += -mmcu=$(MCU)
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C++FLAGS = $(INCS)
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C++FLAGS += $(DEFS)
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C++FLAGS += -Os
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C++FLAGS += -std=c++20
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C++FLAGS += -funsigned-char -funsigned-bitfields -fshort-enums -ffunction-sections -fdata-sections -fno-threadsafe-statics -mrelax
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C++FLAGS += -Wall -Wextra -pedantic -Wno-array-bounds
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C++FLAGS += -mmcu=$(MCU)
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ASMFLAGS = $(INCS)
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ASMFLAGS += $(DEFS)
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ASMFLAGS += -Os
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ASMFLAGS += -funsigned-char -funsigned-bitfields -fshort-enums -ffunction-sections -fdata-sections -fno-threadsafe-statics -mrelax
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ASMFLAGS += -Wall -Wextra -pedantic -Wstrict-prototypes
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ASMFLAGS += -x assembler-with-cpp
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ASMFLAGS += -mmcu=$(MCU)
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all: $(PROJECT).elf $(OBJECTS) $(PROJECT).hex $(PROJECT).srec $(PROJECT).eeprom $(PROJECT).lss
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$(SIZE) -C --mcu=$(MCU) $(PROJECT).elf
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%.elf: $(OBJECTS)
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$(GCC) $(CFLAGS) $(OBJECTS) -o $@ $(LDFLAGS)
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%.o: %.$(EXT_C)
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$(GCC) $(CFLAGS) -c $< -o $@
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%.o: %.$(EXT_C++)
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$(G++) $(C++FLAGS) -c $< -o $@
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%.o: %.$(EXT_ASM)
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$(G++) $(ASMFLAGS) -c $< -o $@
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%.hex: %.elf
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$(OBJCOPY) -j .text -j .data -O ihex $< $@
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%.srec: %.elf
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$(OBJCOPY) -j .text -j .data -O srec $< $@
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%.eeprom: %.elf
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$(OBJCOPY) -j .eeprom --change-section-lma .eeprom=0 -O ihex $< $@
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%.lss: %.elf
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$(OBJDUMP) -h -S $< > $@
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clean:
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$(RM) $(PROJECT).elf $(OBJECTS) $(PROJECT).hex $(PROJECT).srec $(PROJECT).eeprom $(PROJECT).lss $(PROJECT).map
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flash: $(PROJECT).hex
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sudo $(AVRDUDE) $(AVRDUDE_PARAMS) -p $(MCU) -U flash:w:$<:i
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flash-eeprom: $(PROJECT).eeprom
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sudo $(AVRDUDE) $(AVRDUDE_PARAMS) -p $(MCU) -U eeprom:w:$<:i
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flash-fuses:
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sudo $(AVRDUDE) $(AVRDUDE_PARAMS) -p $(MCU) $(FUSES)
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flash-erase:
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sudo $(AVRDUDE) $(AVRDUDE_PARAMS) -p $(MCU) -e
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help:
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@echo "usage:"
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@echo " make <target>"
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@echo ""
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@echo "targets:"
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@echo " all Builds everything"
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@echo " clean Remove any non-source files"
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@echo " flash Flashes firmware"
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@echo " flash-eeprom Flashes eeprom"
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@echo " flash-fuses Flashes fuses"
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@echo " flash-erase Erases entire chip including eeprom"
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@echo " help Shows this help"
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@echo " config Shows the current configuration"
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@echo " show-mcu Show list of all possible MCUs"
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config:
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@echo "configuration:"
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@echo ""
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@echo "Binaries for:"
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@echo " C compiler: $(GCC)"
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@echo " C++ compiler: $(G++)"
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@echo " remove files $(RM)"
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@echo " Programmer: $(AVRDUDE)"
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@echo " Obj copier: $(OBJCOPY)"
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@echo " Obj dumper: $(OBJDUMP)"
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@echo " Size calc: $(SIZE)"
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@echo ""
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@echo "Hardware settings:"
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@echo " MCU: $(MCU)"
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@echo " Avrdude params: $(AVRDUDE_PARAMS)"
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@echo " Fuses: $(FUSES)"
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@echo ""
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@echo "Project settings:"
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@echo " Project name: $(PROJECT)"
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@echo " Include dirs: $(INCS)"
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@echo " Library dirs: $(LIBS)"
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@echo " Preprocessor defs: $(DEFS)"
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@echo " C compiler flags: $(CFLAGS)"
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@echo " C++ compiler flags: $(C++FLAGS)"
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@echo " ASM compiler flags: $(ASMFLAGS)"
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@echo " Linker flags: $(LDFLAGS)"
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@echo ""
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@echo "Defaults:"
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@echo " C-files: *.$(EXT_C)"
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@echo " C++-files: *.$(EXT_C++)"
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@echo " ASM-files: *.$(EXT_ASM)"
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show-mcu:
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$(G++) --target-help
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