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DEVICE = attiny25
CLOCK = 1000000
FUSES = -U lfuse:w:0x62:m -U hfuse:w:0xdd:m
PROGRAMMER = avrdude
PROGRAMMER += -c buspirate
PROGRAMMER += -P /dev/serial/by-id/usb-FTDI_FT232R_USB_UART_A400XJSH-if00-port0
PROGRAMMER += -p $(DEVICE) -B 4
DEFS = -DF_CPU=$(CLOCK)UL
CFLAGS = -Wall -Werror -pedantic -std=c99
CFLAGS += -O2 -funsigned-bitfields -fpack-struct -fshort-enums
CFLAGS += -mmcu=$(DEVICE) $(DEFS)
#LIBS = -Wl,--relax,--gc-sections,--print-gc-sections,--entry=main
#LIBS = -Wl,--entry=main,--gc-sections,--rela
#LDFLAGS = $(LIBS)
all: main.hex size
main.hex: main.c
avr-gcc -o main.elf $? $(CFLAGS) $(LDFLAGS)
avr-objcopy -j .text -j .data -O ihex main.elf main.hex
f: flash
flash: all
$(PROGRAMMER) -U flash:w:main.hex:i
fuse:
$(PROGRAMMER) $(FUSES)
clean:
rm -f *.o *.elf *.hex
size:
avr-size --mcu=$(DEVICE) -t -A main.elf
avr-size --mcu=$(DEVICE) -C main.elf
avr-nm --size-sort main.elf
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