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# The architecture configuration
ARCH ?= atmega88
AVRDUDE_ARCH ?= m88
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
V = @ # Verbose build: make V=1
C = 0 # Sparsechecker build: make C=1
Q = $(V:1=)
QUIET_CC = $(Q:@=@echo ' CC '$@;)$(CC)
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 -g0 -Os -Wall -DIN_FIRMWARE \
"-Dinline=inline __attribute__((__always_inline__))"
SPARSEFLAGS = $(CFLAGS) -I "/usr/lib/avr/include" -D__AVR_ARCH__=4 \
-D__AVR_ATmega88__=1 -D__ATTR_PROGMEM__="" -Dsignal=dllexport \
-Dexternally_visible=dllexport -Dnaked=dllexport \
-Wdeclaration-after-statement -Wdo-while -Wptr-subtraction-blows \
-Wreturn-void -Wshadow -Wtypesign -Wundef
# The fuse bits
LFUSE = 0xE0
HFUSE = 0xDC
EFUSE = 0x01
F_CPU := 20000000
CFLAGS += -DF_CPU=$(F_CPU)
SRCS = main.c util.c lcd.c ltc1446.c ext_control.c
BIN = psu.bin
HEX = psu.hex
EEP = psu.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 $@.tmp -MM -MT "$@ $(patsubst dep/%.d,obj/%.o,$@)" $(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)
%.s: %.c
$(QUIET_CC) $(CFLAGS) -S $*.c
$(BIN): $(call OBJS,$(SRCS))
$(QUIET_CC) $(CFLAGS) -o $(BIN) $(call OBJS,$(SRCS)) $(LDFLAGS)
$(HEX): $(BIN)
$(QUIET_OBJCOPY) -R.eeprom -O ihex $(BIN) $(HEX)
$(QUIET_OBJCOPY) -j.eeprom --set-section-flags=.eeprom="alloc,load" \
--change-section-lma .eeprom=0 -O ihex $(BIN) $(EEP)
@echo -n "flash: "
@$(SIZE) $(BIN) --format=SysV | grep '.text' | awk '{print $$2;}'
@echo -n "eeprom: "
@$(SIZE) $(BIN) --format=SysV | grep '.eeprom' | awk '{print $$2;}'
@echo -n "ram: "
@echo "$$($(SIZE) $(BIN) --format=SysV | grep '.data' | awk '{print $$2;}') +\
$$($(SIZE) $(BIN) --format=SysV | grep '.bss' | awk '{print $$2;}')" | bc
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 $(AVRDUDE_SPEED) -p $(AVRDUDE_ARCH) \
-c $(PROGRAMMER) -P $(PROGPORT) -q -q \
-U lfuse:w:$(LFUSE):m \
-U hfuse:w:$(HFUSE):m \
-U efuse:w:$(EFUSE):m
clean:
-rm -Rf *~ obj dep $(BIN)
distclean: clean
-rm -f *.s $(HEX) $(EEP)
help:
@echo "OpenPSU 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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