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# WinAVR cross-compiler toolchain is used here
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DEVICE=atmega168
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DEV_CODE=16384
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CC = avr-gcc
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DEV_DATA=1024
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OBJCOPY = avr-objcopy
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F_CPU=20000000
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HID_SIZE=81
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DUDE = avrdude
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H_FUSE=0xdf
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L_FUSE=0xff
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# If you are not using ATtiny2313 and the USBtiny programmer,
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# update the lines below to match your configuration
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CFLAGS = -Wall -Os -Iusbdrv -I. -mmcu=atmega168a
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HD_FUSE=0xdf
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OBJFLAGS = -j .text -j .data -O ihex
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LD_FUSE=0x62
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DUDEFLAGS = -p atmega168 -P usb -c avrispmkii -v
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AVRDUDE = avrdude -c avrispmkii -P usb -p $(DEVICE)
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COMPILE = avr-gcc -Wall -Os -Iusbdrv -I. -mmcu=$(DEVICE) -DF_CPU=$(F_CPU) -DHID_SIZE=$(HID_SIZE) -DDEBUG_LEVEL=0
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# Object files for the firmware (usbdrv/oddebug.o not strictly needed I think)
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#OBJECTS = usbdrv/usbdrv.o usbdrv/oddebug.o usbdrv/usbdrvasm.o main.o
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OBJECTS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o main.o twi.o wire.o util.o lcd.o
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OBJECTS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o main.o twi.o wire.o util.o lcd.o
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# symbolic targets:
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all:	main.hex
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.c.o:
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	$(COMPILE) -c $< -o $@
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.S.o:
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	$(COMPILE) -x assembler-with-cpp -c $< -o $@
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.c.s:
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	$(COMPILE) -S $< -o $@
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flash:	all
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	$(AVRDUDE) -U flash:w:main.hex:i
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fuse:
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	$(AVRDUDE) -U hfuse:w:$(H_FUSE):m -U lfuse:w:$(L_FUSE):m
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fusedef:
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	$(AVRDUDE) -U hfuse:w:$(HD_FUSE):m -U lfuse:w:$(LD_FUSE):m
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readcal:
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	$(AVRDUDE) -U calibration:r:/dev/stdout:i | head -1
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clean:
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	rm -f main.hex main.lst main.obj main.cof main.list main.map main.eep.hex main.bin *.o usbdrv/*.o main.s usbdrv/oddebug.s usbdrv/usbdrv.s usbtest
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# file targets:
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main.bin:	$(OBJECTS)
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	$(COMPILE) -o main.bin $(OBJECTS)
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main.hex:	main.bin
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	rm -f main.hex main.eep.hex
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	avr-objcopy -j .text -j .data -O ihex main.bin main.hex
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	./checksize main.bin $(DEV_CODE) $(DEV_DATA)
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# do the checksize script as our last action to allow successful compilation
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# on Windows with WinAVR where the Unix commands will fail.
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disasm:	main.bin
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	avr-objdump -d main.bin
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cpp:
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	$(COMPILE) -E main.c
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# Command-line client
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# Command-line client
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CMDLINE = usbtest
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CMDLINE = usbtest
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# By default, build the firmware and command-line client, but do not flash
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#all: main.hex $(CMDLINE)
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all: main.hex
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# With this, you can flash the firmware by just typing "make flash" on command-line
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flash: main.hex
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	$(DUDE) $(DUDEFLAGS) -U flash:w:$<
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# One-liner to compile the command-line client from usbtest.c
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# One-liner to compile the command-line client from usbtest.c
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$(CMDLINE): usbtest.c
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$(CMDLINE): usbtest.c
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	gcc -I ./libusb/include -L ./libusb/lib/gcc -O -Wall usbtest.c -o usbtest -lusb
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	gcc -I ./libusb/include -L ./libusb/lib/gcc -O -Wall usbtest.c -o usbtest -lusb
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# Housekeeping if you want it
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clean:
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	$(RM) *.o *.hex *.elf usbdrv/*.o usbtest
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# From .elf file to .hex
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%.hex: %.elf
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	$(OBJCOPY) $(OBJFLAGS) $< $@
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# Main.elf requires additional objects to the firmware, not just main.o
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main.elf: $(OBJECTS)
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	$(CC) $(CFLAGS) $(OBJECTS) -o $@
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# Without this dependance, .o files will not be recompiled if you change
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# the config! I spent a few hours debugging because of this...
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$(OBJECTS): usbconfig.h hiddesc.h twi.h wire.h lcd.h util.h
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# From C source to .o object file
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%.o: %.c
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	$(CC) $(CFLAGS) -c $< -o $@
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# From assembler source to .o object file
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%.o: %.S
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	$(CC) $(CFLAGS) -x assembler-with-cpp -c $< -o $@
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