MCU ?= attiny2313 AVRDUDE_PROGRAMMER ?= usbasp AVRCC ?= avr-gcc AVRFLASH ?= avrdude AVRNM ?= avr-nm AVROBJCOPY ?= avr-objcopy AVROBJDUMP ?= avr-objdump CFLAGS += -mmcu=attiny2313 -DF_CPU=20000000UL #CFLAGS += -gdwarf-2 -fverbose-asm -save-temps CFLAGS += -I. -std=gnu99 -Os -Wall -Wextra -pedantic CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums # r28 .. r31 hold the microsecond counters CFLAGS += -ffixed-28 -ffixed-29 -ffixed-30 -ffixed-31 CFLAGS += -fwhole-program -flto -mstrict-X AVRFLAGS += -U lfuse:w:0xe4:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m AVRFLAGS += -U flash:w:main.hex # AVRFLAGS += -U eeprom:w:main.eep %.hex: %.elf ${AVROBJCOPY} -O ihex -R .eeprom $< $@ %.eep: %.elf ${AVROBJCOPY} -j .eeprom --set-section-flags=.eeprom="alloc,load" \ --change-section-lma .eeprom=0 -O ihex $< $@ main.elf: main.c ${AVRCC} ${CFLAGS} -o $@ ${@:.elf=.c} -Wl,-Map=main.map,--cref avr-size -d $@ program: main.hex main.eep ${AVRFLASH} -p ${MCU} -c ${AVRDUDE_PROGRAMMER} ${AVRFLAGS} secsize: main.elf ${AVROBJDUMP} -hw -j.text -j.bss -j.data main.elf funsize: main.elf ${AVRNM} --print-size --size-sort main.elf .PHONY: program secsize funsize # Listing of phony targets. .PHONY : all begin finish end sizebefore sizeafter gccversion \ build elf hex eep lss sym coff extcoff \ clean clean_list program debug gdb-config