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ARCH ?= atmega8
AVRDUDE_ARCH ?= m8
AVRDUDE ?= avrdude
AVRDUDE_SPEED ?= 1
PROGRAMMER ?= avrisp2
PROGPORT ?= usb
CC = avr-gcc
OBJCOPY = avr-objcopy
SIZE = avr-size
CFLAGS = -mmcu=$(ARCH) -std=gnu99 -g0 -O2 -fomit-frame-pointer -Wall -fpack-struct
CFLAGS += "-Dinline=inline __attribute__((__always_inline__))"
# The fuse bits
LFUSE = 0xE0
HFUSE = 0xD9
OBJECTS = main.o util.o valves.o sensor.o remote.o
NAME = pressure_control
BIN = $(NAME).bin
HEX = $(NAME).hex
EEP = $(NAME).eep.hex
all: $(HEX)
main.o: util.h calibration.h valves.h sensor.h remote.h main.h
util.o: util.h calibration.h
valves.o: util.h valves.h
sensor.o: util.h sensor.h
remote.o: util.h remote.h calibration.h main.h
%.s: %.c
$(CC) $(CFLAGS) -S $*.c
$(BIN): $(OBJECTS)
$(CC) $(CFLAGS) -o $(BIN) $(OBJECTS) $(LDFLAGS)
$(HEX): $(BIN)
$(OBJCOPY) -R.eeprom -O ihex $(BIN) $(HEX)
$(OBJCOPY) -j.eeprom --set-section-flags=.eeprom="alloc,load" \
--change-section-lma .eeprom=0 -O ihex $(BIN) $(EEP)
$(SIZE) $(BIN)
avrdude:
$(AVRDUDE) -B $(AVRDUDE_SPEED) -p $(AVRDUDE_ARCH) \
-c $(PROGRAMMER) -P $(PROGPORT) -t
install_flash:
$(AVRDUDE) -B $(AVRDUDE_SPEED) -p $(AVRDUDE_ARCH) \
-c $(PROGRAMMER) -P $(PROGPORT) -U flash:w:$(HEX)
install_eeprom:
$(AVRDUDE) -B $(AVRDUDE_SPEED) -p $(AVRDUDE_ARCH) \
-c $(PROGRAMMER) -P $(PROGPORT) -U eeprom:w:$(EEP)
install: all install_flash install_eeprom
# Reset the microcontroller through avrdude
reset:
$(AVRDUDE) -B $(AVRDUDE_SPEED) -p $(AVRDUDE_ARCH) \
-c $(PROGRAMMER) -P $(PROGPORT) \
-U signature:r:/dev/null:i -q -q
writefuse:
$(AVRDUDE) -B 100 -p $(AVRDUDE_ARCH) \
-c $(PROGRAMMER) -P $(PROGPORT) -q -q \
-U lfuse:w:$(LFUSE):m \
-U hfuse:w:$(HFUSE):m
clean:
-rm -f *~ *.o $(BIN)
distclean: clean
-rm -f *.s $(HEX) $(EEP)
help:
@echo "Makefile"
@echo ""
@echo "Targets:"
@echo " all - build the firmware (default target)"
@echo " clean - remove object files"
@echo " distclean - remove object, binary and hex files"
@echo ""
@echo "Targets that operate on the device through avrdude:"
@echo " install - flash the program code"
@echo " writefuse - write the fuse bits"
@echo " reset - pull the external device reset pin"
@echo " avrdude - run avrdude in interactive mode"
@echo ""
@echo "Generic targets:"
@echo " *.s - create an assembly file from a *.c file"
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