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# The architecture configuration
ARCH = atmega8
AVRDUDE_ARCH = m8
AVRDUDE = avrdude
AVRDUDE_SPEED = 1
PROGRAMMER = avrisp2
PROGPORT = usb
# The toolchain definitions
CC = avr-gcc
OBJCOPY = avr-objcopy
SIZE = avr-size
READELF = avr-readelf
SPARSE = sparse
HOSTCC = gcc
DEBUG = 0 # Debug build: make DEBUG=1
V = @ # Verbose build: make V=1
C = 0 # Sparsechecker build: make C=1
Q = $(V:1=)
QUIET_CC = $(Q:@=@echo ' CC '$@;)$(CC)
QUIET_HOSTCC = $(Q:@=@echo ' HOSTCC '$@;)$(HOSTCC)
QUIET_DEPEND = $(Q:@=@echo ' DEPEND '$@;)$(CC)
QUIET_OBJCOPY = $(Q:@=@echo ' OBJCOPY '$@;)$(OBJCOPY)
QUIET_SIZE = $(Q:@=@echo ' SIZE '$@;)$(SIZE)
QUIET_READELF = $(Q:@=@echo ' READELF '$@;)$(READELF)
ifeq ($(C),1)
QUIET_SPARSE = $(Q:@=@echo ' SPARSE '$@;)$(SPARSE)
else
QUIET_SPARSE = @/bin/true
endif
CFLAGS = -mmcu=$(ARCH) -std=c99 -pedantic -g0 -O2 -Wall \
"-Dinline=inline __attribute__((__always_inline__))"
SPARSEFLAGS = $(CFLAGS) -I "/usr/lib/avr/include" -D__AVR_ARCH__=4 \
-D__AVR_ATmega8__=1 -D__ATTR_PROGMEM__="" -Dsignal=dllexport \
-Dexternally_visible=dllexport -D__naked__=dllexport
HOST_CFLAGS = -O2 --std=c99 -pedantic -Wall -D_BSD_SOURCE -D_GNU_SOURCE
HOST_LDFLAGS =
HOST_SPARSEFLAGS = $(HOST_CFLAGS)
# The fuse bits
LFUSE = 0xE0
HFUSE = 0xD9
F_CPU := 16000000
CFLAGS += -DF_CPU=$(F_CPU)
SRCS = main.c lcd.c util.c timer.c
NAME = funcgen
BIN = $(NAME).bin
HEX = $(NAME).hex
EEP = $(NAME).eep.hex
.SUFFIXES:
.PHONY: all avrdude install_flash install_eeprom install reset writefuse clean distclean
.DEFAULT_GOAL := all
DEPS = $(sort $(patsubst %.c,dep/%.d,$(1)))
OBJS = $(sort $(patsubst %.c,obj/%.o,$(1)))
# Generate dependencies
$(call DEPS,$(SRCS)): dep/%.d: %.c
@mkdir -p $(dir $@)
$(QUIET_DEPEND) -o $@.tmp -MM -MG -MT "$@ $(patsubst dep/%.d,obj/%.o,$@)" $(CFLAGS) $< && mv -f $@.tmp $@
-include $(call DEPS,$(SRCS))
# Generate object files
$(call OBJS,$(SRCS)): obj/%.o:
@mkdir -p $(dir $@)
$(QUIET_SPARSE) $(SPARSEFLAGS) $<
$(QUIET_CC) -o $@ -c $(CFLAGS) $<
all: $(HEX)
tables.c:
$(QUIET_SPARSE) $(HOST_SPARSEFLAGS) tabgen.c
$(QUIET_HOSTCC) $(HOST_CFLAGS) -c -o tabgen.o tabgen.c
$(QUIET_HOSTCC) $(HOST_CFLAGS) -o tabgen tabgen.o $(HOST_LDFLAGS) -lm
$(Q:@=@echo ' TABGEN '$@;)./tabgen > tables.c
%.s: %.c
$(QUIET_CC) $(CFLAGS) -S $*.c
$(BIN): $(call OBJS,$(SRCS))
$(QUIET_CC) $(CFLAGS) -o $(BIN) $(call OBJS,$(SRCS)) $(LDFLAGS) -Wl,--section-start=.generatortab=0x800100
$(HEX): $(BIN)
$(QUIET_OBJCOPY) -R.eeprom -R.generatortab -O ihex $(BIN) $(HEX)
$(QUIET_OBJCOPY) -j.eeprom --set-section-flags=.eeprom="alloc,load" \
--change-section-lma .eeprom=0 -O ihex $(BIN) $(EEP)
$(QUIET_SIZE) $(BIN)
$(QUIET_READELF) -S $(BIN) | egrep '(Name|text|eeprom|data|bss)'
avrdude:
$(AVRDUDE) -B $(AVRDUDE_SPEED) -p $(AVRDUDE_ARCH) \
-c $(PROGRAMMER) -P $(PROGPORT) -t
reset:
$(AVRDUDE) -B $(AVRDUDE_SPEED) -p $(AVRDUDE_ARCH) \
-c $(PROGRAMMER) -P $(PROGPORT) \
-U signature:r:/dev/null:i -q -q
writefuse:
$(AVRDUDE) -B $(AVRDUDE_SPEED) -p $(AVRDUDE_ARCH) \
-c $(PROGRAMMER) -P $(PROGPORT) -q -q \
-U lfuse:w:$(LFUSE):m \
-U hfuse:w:$(HFUSE):m
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
clean:
rm -Rf *~ *.o *.s dep obj tabgen tables.c $(BIN)
distclean: clean
rm -f $(HEX) $(EEP)
help:
@echo "Funcgen 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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