CC := avr-gcc LD := avr-ld OBJCOPY := avr-objcopy OBJDUMP := avr-objdump SIZE := avr-size TARGET = uartboot SOURCE = $(wildcard *.c) #CONFIG = ispprog #CONFIG = flightctrl #CONFIG = funkstuff CONFIG = ispprog2 AVRDUDE_PROG := -c avr910 -b 115200 -P /dev/ttyUSB0 #AVRDUDE_PROG := -c dragon_isp -P usb # --------------------------------------------------------------------------- ifeq ($(CONFIG), ispprog) MCU=atmega16 AVRDUDE_MCU=m16 # (7.3728MHz ext. crystal) AVRDUDE_FUSES=lfuse:w:0xff:m hfuse:w:0xda:m BOOTLOADER_START=0x3C00 endif # ------------------------- ifeq ($(CONFIG), flightctrl) MCU=atmega644p AVRDUDE_MCU=m644p # (20MHz ext. Crystal, 2.7V BOD) AVRDUDE_FUSES=lfuse:w:0xff:m hfuse:w:0xdc:m efuse:w:0xfd:m BOOTLOADER_START=0xF800 endif # ------------------------- ifeq ($(CONFIG), funkstuff) MCU=atmega88 AVRDUDE_MCU=m88 -F # (ext. crystal) #AVRDUDE_FUSES=lfuse:w:0x84:m hfuse:w:0xda:m BOOTLOADER_START=0x1C00 endif # ------------------------- ifeq ($(CONFIG), ispprog2) MCU=atmega328p AVRDUDE_MCU=m328p -F # (8MHz internal osc., 2.7V BOD) AVRDUDE_FUSES=lfuse:w:0xe2:m hfuse:w:0xdc:m efuse:w:0x02:m BOOTLOADER_START=0x7C00 endif # --------------------------------------------------------------------------- CFLAGS = -pipe -g -Os -mmcu=$(MCU) -Wall CFLAGS += -fdata-sections -ffunction-sections CFLAGS += -Wa,-adhlns=$(*F).lst CFLAGS += -DBOOTLOADER_START=$(BOOTLOADER_START) -DCONFIG_$(CONFIG)=1 LDFLAGS = -Wl,-Map,$(@:.elf=.map),--cref,--section-start=.text=$(BOOTLOADER_START) LDFLAGS += -Wl,--relax,--gc-sections LDSCRIPT := $(shell LANG=C $(CC) $(CFLAGS) -Wl,--verbose 2> /dev/null | awk '/^opened script file (.*)$$/{ print $$4 }') LDSCRIPT_NOVECT := ldscript-no-vectors-$(notdir $(LDSCRIPT)) # --------------------------------------------------------------------------- $(TARGET): $(TARGET).elf @$(SIZE) -B -x --mcu=$(MCU) $< $(TARGET).elf: $(SOURCE:.c=.o) | $(LDSCRIPT_NOVECT) @echo " Linking file: $@" @$(CC) $(CFLAGS) $(LDFLAGS) -Wl,-T$(LDSCRIPT_NOVECT) -o $@ $^ #2> /dev/null @$(OBJDUMP) -h -S $@ > $(@:.elf=.lss) @$(OBJCOPY) -j .text -j .data -O ihex $@ $(@:.elf=.hex) @$(OBJCOPY) -j .text -j .data -O binary $@ $(@:.elf=.bin) %.o: %.c $(MAKEFILE_LIST) @echo " Building file: $<" @$(CC) $(CFLAGS) -o $@ -c $< # remove interrupt vector section from avr-libc linker script # (remove all lines with *vectors* and insert DISCARD line above .text declaration) $(LDSCRIPT_NOVECT): $(LDSCRIPT) $(MAKEFILE_LIST) @echo " Creating: $@" @sed -e '/.*vectors.*/d' -e 's/\(^[ \t]*\)\(.text[ \t]*\:\)$$/\1\/DISCARD\/ : { *(.vectors) }\n\1\2/g' $< > $@ # -@diff -uNr $< $@ > $@.diff clean: rm -rf $(SOURCE:.c=.o) $(SOURCE:.c=.lst) $(addprefix $(TARGET), .elf .map .lss .hex .bin) ldscript-no-vectors-* install: $(TARGET).elf avrdude $(AVRDUDE_PROG) -p $(AVRDUDE_MCU) -U flash:w:$(<:.elf=.hex) fuses: avrdude $(AVRDUDE_PROG) -p $(AVRDUDE_MCU) $(patsubst %,-U %, $(AVRDUDE_FUSES))