PROJECT = DeluxeUSB
DEVICE = attiny25
F_CPU = 16500000 # in Hz
AVRDUDE = avrdude -c pony-stk200 -P lpt1 -p $(DEVICE)
CFLAGS = -Iusbdrv -I.
OBJECTS = $(PROJECT).o usbdrv/usbdrvasm.o
#usbdrv/usbdrv.o
COMPILE = avr-gcc -Wall -Os -DF_CPU=$(F_CPU) $(CFLAGS) -mmcu=$(DEVICE)
############################## ATTiny25/45/85 ###############################
# ATtiny*5 FUSE_L (Fuse low byte):
# 0xC1 = 1 1 0 0 0 0 0 1
# ^ ^ \+/ \--+--/
# | | | +------- CKSEL 3..0 (clock selection -> HF PLL @ 16.5 MHz)
# | | +--------------- SUT 1..0 (BOD enabled, fast rising power)
# | +------------------ CKOUT (clock output on CKOUT pin -> disabled)
# +-------------------- CKDIV8 (divide clock by 8 -> don't divide)
# ATtiny*5 FUSE_H (Fuse high byte):
# 0xD5 = 1 1 0 1 0 1 0 1
# ^ ^ ^ ^ ^ \-+-/
# | | | | | +------ BODLEVEL 2..0 (brownout trigger level -> 2.7V)
# | | | | +---------- EESAVE (preserve EEPROM on Chip Erase -> preserve)
# | | | +-------------- WDTON (watchdog timer always on -> no)
# | | +---------------- SPIEN (enable serial programming -> enabled)
# | +------------------ DWEN (debug wire enable)
# +-------------------- RSTDISBL (disable external reset -> enabled)
#
LFUSE = 0xC1
HFUSE = 0xD5
all: $(PROJECT).hex
help:
@echo "make all ....... to build DeluxeUSB.hex out of source files"
@echo "make prog ...... to flash fuses and firmware (for ATtiny25)"
@echo "make tn45 ...... to flash fuses and firmware for ATtiny45"
@echo "make tn85 ...... to flash fuses and firmware for ATtiny85"
@echo "make fuse ...... to flash the fuses"
@echo "make flash ..... to flash the firmware"
@echo "make clean ..... to delete objects and hex file"
@echo "make disasm .... create DeluxeUSB.dis"
# rule for programming fuse bits only:
fuse:
$(AVRDUDE) -U hfuse:w:$(HFUSE):m -U lfuse:w:$(LFUSE):m
# rule for uploading firmware, compile if necessary:
flash: $(PROJECT).hex
$(AVRDUDE) -U flash:w:$<:i
# program a fresh chip without compiling, only one invocation of avrdude
prog:
$(AVRDUDE) -U hfuse:w:$(HFUSE):m -U lfuse:w:$(LFUSE):m -U flash:w:$(PROJECT).hex:i
# program an ATtiny45 chip without compiling
tn45:
$(AVRDUDE) -p attiny45 -U hfuse:w:$(HFUSE):m -U lfuse:w:$(LFUSE):m -U flash:w:$(PROJECT).hex:i
# program an ATtiny85 chip without compiling
tn85:
$(AVRDUDE) -p attiny85 -U hfuse:w:$(HFUSE):m -U lfuse:w:$(LFUSE):m -U flash:w:$(PROJECT).hex:i
# rule for deleting dependent files (those which can be built by Make):
clean:
rm -f $(PROJECT).hex $(PROJECT).lst $(PROJECT).elf *.o usbdrv/*.o
# Generic rule for compiling C files:
.c.o:
$(COMPILE) -c $< -o $@
# Generic rule for assembling Assembler source files:
.S.o:
$(COMPILE) -x assembler-with-cpp -c $< -o $@
# file targets:
$(PROJECT).elf: $(OBJECTS)
$(COMPILE) -o $@ $(OBJECTS)
$(PROJECT).hex: $(PROJECT).elf
rm -f $@
avr-objcopy -j .text -j .data -O ihex $< $@
avr-size $@
disasm: $(PROJECT).elf
avr-objdump -d $< > $(PROJECT).lst
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