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pfowler |
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# WinAVR cross-compiler toolchain is used here
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CC = avr-gcc
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OBJCOPY = avr-objcopy
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DUDE = avrdude
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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 -I. -mmcu=atmega168a
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OBJFLAGS = -j .text -j .data -O ihex
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DUDEFLAGS = -p atmega168 -P usb -c avrispmkii -v
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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 = lcd.o twi.o wire.o main.o
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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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# Housekeeping if you want it
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clean:
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$(RM) *.o *.hex *.elf
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# From .elf file to .hex
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%.hex: %.elf
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$(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): twi.h wire.h lcd.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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