95 lines
2.6 KiB
Makefile
95 lines
2.6 KiB
Makefile
# required packages
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# sudo aptitude install avrdude gcc-avr avr-libc
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# the program
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TARGET=led-controller
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# to compile
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CC=avr-gcc
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OBJDUMP=avr-objdump
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OBJCOPY=avr-objcopy
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CFLAGS=-g -Wall -Werror -O3 -std=c99
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# the target
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DEVICE=atmega328p
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F_CPU=18432000UL
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# the flasher
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PROGRAMMER=usbtiny
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# to flash
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FLASHER=avrdude -p $(DEVICE) -c $(PROGRAMMER)
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# source files to compile
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SRC = main.c uart.c ir_nec.c settings.c
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# header files.
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HEADER = $(SRC:.c=.h)
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# object files.
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OBJ = $(SRC:.c=.o)
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# listing files.
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LST = $(SRC:.c=.lst)
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all: program $(TARGET).lst verify burn-fuse flash
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verify:
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$(FLASHER)
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if [ $$? -eq 0 ]; then \
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echo "flasher configured correctly"; \
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else \
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echo "flasher not configured correctly in Makefile"; \
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exit 1; \
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fi
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reset:
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$(FLASHER)
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read-fuse:
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$(FLASHER) -U lfuse:r:lfuse.raw:r -U hfuse:r:hfuse.raw:r -U efuse:r:efuse.raw:r
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# Fuse low byte:
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# 0xff = 1 1 1 1 1 1 1 1
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# ^ ^ \+/ \--+--/
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# | | | +------- CKSEL 3..0 (clock selection -> full swing crytal oscillator)
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# | | +--------------- SUT 1..0 (select start-up time -> slowly rising power)
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# | +------------------ CKOUT (clock output on CKOUT pin -> unprogrammed)
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# +-------------------- CKDIV8 (divide clock by 8 -> unprogrammed)
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#
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# Fuse high byte:
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# 0xdf = 1 1 0 1 1 1 1 1
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# ^ ^ ^ ^ ^ \+/ ^
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# | | | | | | +---- BOOTRST (Select Reset Vector -> jump to application at start)
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# | | | | | +------- BOOTSZ 1..0 (Select Boot Size -> 256 words starting at 0x3F00)
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# | | | | +---------- EESAVE (preserve EEPROM on Chip Erase -> unprogrammed)
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# | | | +-------------- WDTON (watchdog timer always on -> unprogrammed)
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# | | +---------------- SPIEN (enable serial programming -> programmed)
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# | +------------------ DWEN (debug wire enable -> unprogrammed)
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# +-------------------- RSTDISBL (disable external reset -> unprogrammed)
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#
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# Fuse extended byte:
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# 0x04 = - - - - - 1 0 0
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# \-+-/
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# +------ BODLEVEL 2..0 (Brown-out Detector trigger level -> 4.3V)
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burn-fuse:
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$(FLASHER) -U lfuse:w:0xff:m -U hfuse:w:0xdf:m -U efuse:w:0x04:m
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read-flash:
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$(FLASHER) -U flash:r:flash_dump.hex:i
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flash:
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$(FLASHER) -U flash:w:$(TARGET).hex:i
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program: $(TARGET).hex
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# compile
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%.o: %.c %.h
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$(CC) $(CFLAGS) -I. -mmcu=$(DEVICE) -DF_CPU=$(F_CPU) -c -o $@ $<
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# link
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%.elf: $(OBJ)
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$(CC) $(CFLAGS) -I. -mmcu=$(DEVICE) -DF_CPU=$(F_CPU) -Wl,-Map=$(TARGET).map,--cref -o $@ $(OBJ)
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# extended listing
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%.lst: %.elf
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$(OBJDUMP) -h -S $< > $@
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# output file
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%.hex: %.elf
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$(OBJCOPY) -j .text -j .data -O ihex $< $@
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clean:
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rm -f $(TARGET) $(TARGET).hex $(TARGET).elf $(LST) $(TARGET).lst $(OBJ)
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