Sample AVR Makefile
# WinAVR Sample makefile written by Eric B. Weddington, Jörg Wunsch, et al. | |
# Modified (bringing often-changed options to the top) by Elliot Williams | |
# make all = Make software and program | |
# make clean = Clean out built project files. | |
# make program = Download the hex file to the device, using avrdude. Please | |
# customize the avrdude settings below first! | |
# Microcontroller Type | |
MCU = attiny13 | |
# MCU = attiny2313 | |
# MCU = atmega8 | |
# MCU = attiny45 | |
# Target file name (without extension). | |
TARGET = LED_Demo | |
# Programming hardware: type avrdude -c ? | |
# to get a full listing. | |
# AVRDUDE_PROGRAMMER = dapa | |
AVRDUDE_PROGRAMMER = usbtiny | |
# AVRDUDE_PROGRAMMER = dt006 | |
AVRDUDE_PORT = /dev/usb # not really needed for usb | |
#AVRDUDE_PORT = /dev/parport0 # linux | |
# AVRDUDE_PORT = lpt1 # windows | |
############# Don't need to change below here for most purposes (Elliot) | |
# Optimization level, can be [0, 1, 2, 3, s]. 0 turns off optimization. | |
# (Note: 3 is not always the best optimization level. See avr-libc FAQ.) | |
OPT = s | |
# Output format. (can be srec, ihex, binary) | |
FORMAT = ihex | |
# List C source files here. (C dependencies are automatically generated.) | |
SRC = $(TARGET).c | |
# If there is more than one source file, append them above, or modify and | |
# uncomment the following: | |
#SRC += foo.c bar.c | |
# You can also wrap lines by appending a backslash to the end of the line: | |
#SRC += baz.c \ | |
#xyzzy.c | |
# List Assembler source files here. | |
# Make them always end in a capital .S. Files ending in a lowercase .s | |
# will not be considered source files but generated files (assembler | |
# output from the compiler), and will be deleted upon "make clean"! | |
# Even though the DOS/Win* filesystem matches both .s and .S the same, | |
# it will preserve the spelling of the filenames, and gcc itself does | |
# care about how the name is spelled on its command-line. | |
ASRC = | |
# List any extra directories to look for include files here. | |
# Each directory must be seperated by a space. | |
EXTRAINCDIRS = | |
# Optional compiler flags. | |
# -g: generate debugging information (for GDB, or for COFF conversion) | |
# -O*: optimization level | |
# -f...: tuning, see gcc manual and avr-libc documentation | |
# -Wall...: warning level | |
# -Wa,...: tell GCC to pass this to the assembler. | |
# -ahlms: create assembler listing | |
CFLAGS = -g -O$(OPT) \ | |
-funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums \ | |
-Wall -Wstrict-prototypes \ | |
-Wa,-adhlns=$(<:.c=.lst) \ | |
$(patsubst %,-I%,$(EXTRAINCDIRS)) | |
# Set a "language standard" compiler flag. | |
# Unremark just one line below to set the language standard to use. | |
# gnu99 = C99 + GNU extensions. See GCC manual for more information. | |
#CFLAGS += -std=c89 | |
#CFLAGS += -std=gnu89 | |
#CFLAGS += -std=c99 | |
CFLAGS += -std=gnu99 | |
# Optional assembler flags. | |
# -Wa,...: tell GCC to pass this to the assembler. | |
# -ahlms: create listing | |
# -gstabs: have the assembler create line number information; note that | |
# for use in COFF files, additional information about filenames | |
# and function names needs to be present in the assembler source | |
# files -- see avr-libc docs [FIXME: not yet described there] | |
ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs | |
# Optional linker flags. | |
# -Wl,...: tell GCC to pass this to linker. | |
# -Map: create map file | |
# --cref: add cross reference to map file | |
LDFLAGS = -Wl,-Map=$(TARGET).map,--cref | |
# Additional libraries | |
# Minimalistic printf version | |
#LDFLAGS += -Wl,-u,vfprintf -lprintf_min | |
# Floating point printf version (requires -lm below) | |
#LDFLAGS += -Wl,-u,vfprintf -lprintf_flt | |
# -lm = math library | |
LDFLAGS += -lm | |
# Programming support using avrdude. Settings and variables. | |
AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex | |
#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep | |
AVRDUDE_FLAGS = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER) | |
# Uncomment the following if you want avrdude's erase cycle counter. | |
# Note that this counter needs to be initialized first using -Yn, | |
# see avrdude manual. | |
#AVRDUDE_ERASE += -y | |
# Uncomment the following if you do /not/ wish a verification to be | |
# performed after programming the device. | |
#AVRDUDE_FLAGS += -V | |
# Increase verbosity level. Please use this when submitting bug | |
# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude> | |
# to submit bug reports. | |
#AVRDUDE_FLAGS += -v -v | |
#Run while cable attached or don't | |
AVRDUDE_FLAGS += -E reset #keep chip disabled while cable attached | |
#AVRDUDE_FLAGS += -E noreset | |
#AVRDUDE_WRITE_FLASH = -U lfuse:w:0x04:m #run with 8 Mhz clock | |
#AVRDUDE_WRITE_FLASH = -U lfuse:w:0x21:m #run with 1 Mhz clock #default clock mode | |
#AVRDUDE_WRITE_FLASH = -U lfuse:w:0x01:m #run with 1 Mhz clock no start up time | |
# --------------------------------------------------------------------------- | |
# Define directories, if needed. | |
DIRAVR = c:/winavr | |
DIRAVRBIN = $(DIRAVR)/bin | |
DIRAVRUTILS = $(DIRAVR)/utils/bin | |
DIRINC = . | |
DIRLIB = $(DIRAVR)/avr/lib | |
# Define programs and commands. | |
SHELL = sh | |
CC = avr-gcc | |
OBJCOPY = avr-objcopy | |
OBJDUMP = avr-objdump | |
SIZE = avr-size | |
# Programming support using avrdude. | |
AVRDUDE = avrdude | |
REMOVE = rm -f | |
COPY = cp | |
HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex | |
ELFSIZE = $(SIZE) -A $(TARGET).elf | |
# Define Messages | |
# English | |
MSG_ERRORS_NONE = Errors: none | |
MSG_BEGIN = -------- begin -------- | |
MSG_END = -------- end -------- | |
MSG_SIZE_BEFORE = Size before: | |
MSG_SIZE_AFTER = Size after: | |
MSG_COFF = Converting to AVR COFF: | |
MSG_EXTENDED_COFF = Converting to AVR Extended COFF: | |
MSG_FLASH = Creating load file for Flash: | |
MSG_EEPROM = Creating load file for EEPROM: | |
MSG_EXTENDED_LISTING = Creating Extended Listing: | |
MSG_SYMBOL_TABLE = Creating Symbol Table: | |
MSG_LINKING = Linking: | |
MSG_COMPILING = Compiling: | |
MSG_ASSEMBLING = Assembling: | |
MSG_CLEANING = Cleaning project: | |
# Define all object files. | |
OBJ = $(SRC:.c=.o) $(ASRC:.S=.o) | |
# Define all listing files. | |
LST = $(ASRC:.S=.lst) $(SRC:.c=.lst) | |
# Combine all necessary flags and optional flags. | |
# Add target processor to flags. | |
ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) | |
ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS) | |
# Default target: make program! | |
all: begin gccversion sizebefore $(TARGET).elf $(TARGET).hex $(TARGET).eep \ | |
$(TARGET).lss $(TARGET).sym sizeafter finished end | |
# $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM) | |
# Eye candy. | |
# AVR Studio 3.x does not check make's exit code but relies on | |
# the following magic strings to be generated by the compile job. | |
begin: | |
@echo | |
@echo $(MSG_BEGIN) | |
finished: | |
@echo $(MSG_ERRORS_NONE) | |
end: | |
@echo $(MSG_END) | |
@echo | |
# Display size of file. | |
sizebefore: | |
@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi | |
sizeafter: | |
@if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi | |
# Display compiler version information. | |
gccversion : | |
@$(CC) --version | |
# Convert ELF to COFF for use in debugging / simulating in | |
# AVR Studio or VMLAB. | |
COFFCONVERT=$(OBJCOPY) --debugging \ | |
--change-section-address .data-0x800000 \ | |
--change-section-address .bss-0x800000 \ | |
--change-section-address .noinit-0x800000 \ | |
--change-section-address .eeprom-0x810000 | |
coff: $(TARGET).elf | |
@echo | |
@echo $(MSG_COFF) $(TARGET).cof | |
$(COFFCONVERT) -O coff-avr $< $(TARGET).cof | |
extcoff: $(TARGET).elf | |
@echo | |
@echo $(MSG_EXTENDED_COFF) $(TARGET).cof | |
$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof | |
# Program the device. | |
program: $(TARGET).hex $(TARGET).eep | |
$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM) | |
# Create final output files (.hex, .eep) from ELF output file. | |
%.hex: %.elf | |
@echo | |
@echo $(MSG_FLASH) $@ | |
$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@ | |
%.eep: %.elf | |
@echo | |
@echo $(MSG_EEPROM) $@ | |
-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \ | |
--change-section-lma .eeprom=0 -O $(FORMAT) $< $@ | |
# Create extended listing file from ELF output file. | |
%.lss: %.elf | |
@echo | |
@echo $(MSG_EXTENDED_LISTING) $@ | |
$(OBJDUMP) -h -S $< > $@ | |
# Create a symbol table from ELF output file. | |
%.sym: %.elf | |
@echo | |
@echo $(MSG_SYMBOL_TABLE) $@ | |
avr-nm -n $< > $@ | |
# Link: create ELF output file from object files. | |
.SECONDARY : $(TARGET).elf | |
.PRECIOUS : $(OBJ) | |
%.elf: $(OBJ) | |
@echo | |
@echo $(MSG_LINKING) $@ | |
$(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS) | |
# Compile: create object files from C source files. | |
%.o : %.c | |
@echo | |
@echo $(MSG_COMPILING) $< | |
$(CC) -c $(ALL_CFLAGS) $< -o $@ | |
# Compile: create assembler files from C source files. | |
%.s : %.c | |
$(CC) -S $(ALL_CFLAGS) $< -o $@ | |
# Assemble: create object files from assembler source files. | |
%.o : %.S | |
@echo | |
@echo $(MSG_ASSEMBLING) $< | |
$(CC) -c $(ALL_ASFLAGS) $< -o $@ | |
# Target: clean project. | |
clean: begin clean_list finished end | |
clean_list : | |
@echo | |
@echo $(MSG_CLEANING) | |
$(REMOVE) $(TARGET).hex | |
$(REMOVE) $(TARGET).eep | |
$(REMOVE) $(TARGET).obj | |
$(REMOVE) $(TARGET).cof | |
$(REMOVE) $(TARGET).elf | |
$(REMOVE) $(TARGET).map | |
$(REMOVE) $(TARGET).obj | |
$(REMOVE) $(TARGET).a90 | |
$(REMOVE) $(TARGET).sym | |
$(REMOVE) $(TARGET).lnk | |
$(REMOVE) $(TARGET).lss | |
$(REMOVE) $(OBJ) | |
$(REMOVE) $(LST) | |
$(REMOVE) $(SRC:.c=.s) | |
$(REMOVE) $(SRC:.c=.d) | |
$(REMOVE) *~ | |
# Automatically generate C source code dependencies. | |
# (Code originally taken from the GNU make user manual and modified | |
# (See README.txt Credits).) | |
# | |
# Note that this will work with sh (bash) and sed that is shipped with WinAVR | |
# (see the SHELL variable defined above). | |
# This may not work with other shells or other seds. | |
# | |
%.d: %.c | |
set -e; $(CC) -MM $(ALL_CFLAGS) $< \ | |
| sed 's,\(.*\)\.o[ :]*,\1.o \1.d : ,g' > $@; \ | |
[ -s $@ ] || rm -f $@ | |
# Remove the '-' if you want to see the dependency files generated. | |
-include $(SRC:.c=.d) | |
# Listing of phony targets. | |
.PHONY : all begin finish end sizebefore sizeafter gccversion coff extcoff \ | |
clean clean_list program |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment