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# Location of build tools
CC=avr-gcc
OBJCOPY=avr-objcopy
SIZE=avr-size
AVRDUDE=avrdude
AVRDUDE_FLAGS=-B 100kHz
# 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=attiny25
AVRDUDE_PART=t25
# Cpu frequency, internal RC at 8MHz, divide by 8 enabled
F_CPU="1000000UL"
# Directory for built objects
BUILD_DIR=build
# Port/application object files
APP_NAME = app
# Application object files
APP_OBJECTS = main.o
# Library object files to build and use
LIB_OBJECTS =
LIB_ASM_OBJECTS =
LIB_DIR = ../lib
# Collection of built objects
ALL_OBJECTS = $(LIB_OBJECTS) $(LIB_ASM_OBJECTS) $(APP_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
CFLAGS=-g -mmcu=$(PART) -Os -Wall -Werror -DF_CPU=$(F_CPU)
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_ASM_OBJECTS) $(APP_OBJECTS)
$(CC) $(CFLAGS) $(BUILT_OBJECTS) --output $(BUILD_DIR)/$@ -Wl,-Map,$(BUILD_DIR)/$(basename $@).map
# Application objects builder
$(APP_OBJECTS): %.o: %.c
$(CC) -c $(CFLAGS) $(INCLUDES) $< -o $(BUILD_DIR)/$(notdir $@)
# Application C objects builder
$(LIB_OBJECTS): %.o: $(LIB_DIR)/%.c
$(CC) -c $(CFLAGS) $(INCLUDES) $< -o $(BUILD_DIR)/$(notdir $@)
# Application asm objects builder
$(LIB_ASM_OBJECTS): %.o: $(LIB_DIR)/%.s
$(CC) -c $(CFLAGS) -x assembler-with-cpp $(INCLUDES) $< -o $(BUILD_DIR)/$(notdir $@)
# .lst file builder
%.lst: %.c
$(CC) $(CFLAGS) $(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:0x62:m -U hfuse:w:0xdf: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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