Makefile

PRJ=main
SRC=$(PRJ).cpp

CFLAGS=-c -Wall
LDFLAGS=
SOURCES=$(PRJ).cpp
EXT=./USART ./ADXL345 ./i2c ./TWI ./Motors ./Gyro
OBJECTS=$(SOURCES:.cpp=.o)
EXECUTABLE=hello

MCU=atmega328p
CLK=16000000
PRG=Usbasp
AVRD = avrdude

CFLAGS = -Wall -Os -DF_CPU=$(CLK) -mmcu=$(MCU) $(INCLUDE) -std=c++11

# executables
SIM=simulavr
AVRDUDE = avrdude -c $(PRG) -p $(MCU)
OBJCOPY = avr-objcopy
OBJDUMP = avr-objdump
SIZE    = avr-size --format=avr --mcu=$(MCU)
CC = avr-g++

# generate list of objects
CFILES    = $(filter %.c, $(SRC))
EXTC     := $(foreach dir, $(EXT), $(wildcard $(dir)/*.c))
CPPFILES  = $(filter %.cpp, $(SRC))
EXTCPP   := $(foreach dir, $(EXT), $(wildcard $(dir)/*.cpp))
OBJ = $(CFILES:.c=.o) $(EXTC:.c=.o) $(CPPFILES:.cpp=.o) $(EXTCPP:.cpp=.o)
#OBJ = "lalal"


# compile all files
all: $(PRJ).hex

# test programmer connectivity
test:
	$(AVRDUDE) -v

# flash program to mcu
flash: all
	$(AVRDUDE) -U flash:w:$(PRJ).hex:i

# write fuses to mcu
#fuse:
#	$(AVRDUDE) -U lfuse:w:$(LFU):m -U hfuse:w:$(HFU):m -U efuse:w:$(EFU):m

# generate disassembly files for debugging
disasm: $(PRJ).elf
	$(OBJDUMP) -d $(PRJ).elf

# remove compiled files
clean:
	rm -f *.hex *.elf *.o
	$(foreach dir, $(EXT), rm -f $(dir)/*.o;)

# other targets
# objects from c files
.c.o:
	$(CC) $(CFLAGS) -c $< -o $@
	
# objects from c++ files
.cpp.o:
	$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@

# elf file
$(PRJ).elf: $(OBJ)
	@echo "Making elf file from objects: " $(OBJ)
	$(CC) $(CFLAGS) -o $(PRJ).elf $(OBJ)

# hex file
$(PRJ).hex: $(PRJ).elf
	rm -f $(PRJ).hex
	$(OBJCOPY) -j .text -j .data -O ihex $(PRJ).elf $(PRJ).hex
#	$(SIZE) $(PRJ).elf