PROJECT = VgaGen
DEVICE = atmega88
F_CPU = 20000000 # in Hz
AVRDUDE = avrdude -c pony-stk200 -P lpt1 -p $(DEVICE) -E noreset
AVRASM = C:\Programme\AVRStudio\AvrAssembler2\avrasm2 -D F_CPU=$(F_CPU) -fI
# ATmega88 LFuse:
# 0xF6 = 1 1 1 1 0 1 1 0
# ^ ^ \+/ \--+--/
# | | | +----- CKSEL (clock selection -> full-swing XTAL)
# | | +------------ SUT (start-up timer: slowest)
# | +--------------- CKOUT (NO)
# +----------------- CLKDIV8 (NO)
# ATmega88 HFuse:
# 0xDC = 1 1 0 1 1 1 0 0
# ^ ^ ^ ^ ^ \---/
# | | | | | +---- BODLEVEL (require 5V)
# | | | | +-------- EESAVE (preserve EEPROM on Chip Erase -> NO)
# | | | +----------- WDTON (watchdog timer always on -> NO)
# | | +------------- SPIEN (enable serial programming -> YES)
# | +--------------- DWEN (Debug Wire Enable -> NO)
# +----------------- RSTDISBL (disable external reset -> NO)
# ATmega88 EFuse:
# 0xF9 = 1 1 1 1 1 0 0 1
# \--------/ \-/ |
# | | +-- BOOTRST (boot reset address: 0)
# | +----- BOOTSZ (boot size: doesn't matter)
# +------------- unused
LFUSE = 0xF6
HFUSE = 0xDC
EFUSE = 0x01
all: $(PROJECT).hex
fuse:
$(AVRDUDE) -U efuse:w:$(EFUSE):m -U hfuse:w:$(HFUSE):m -U lfuse:w:$(LFUSE):m
flash: $(PROJECT).hex
$(AVRDUDE) -U flash:w:$<:i
prog:
$(AVRDUDE) -U efuse:w:$(EFUSE):m -U hfuse:w:$(HFUSE):m -U lfuse:w:$(LFUSE):m -U flash:w:$(PROJECT).hex:i
clean:
rm -f $(PROJECT).hex $(PROJECT).lst Bild.i90
$(PROJECT).hex: $(PROJECT).a90 Bild.i90 Makefile
$(AVRASM) $< -l $(PROJECT).lst
Bild.i90: Bild.bmp
MakeBild < $< > $@
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