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CFLAGS += -Wall -Os -I. -mmcu=attiny26 -std=c99
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DEFINES += -DF_CPU=16e6
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OBJECTS = gg.o mmc.o #ringbuf_small.o
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# further optimization:
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# this removes dead code and does global linker optimization
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#CFLAGS += -ffunction-sections -Wl,--gc-sections -Wl,--relax
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#CFLAGS += --param inline-call-cost=2
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COMPILE = avr-gcc $(CFLAGS) $(DEFINES)
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# symbolic targets:
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all: firmware.hex
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.c.o:
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$(COMPILE) -c $< -o $@
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.S.o:
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$(COMPILE) -x assembler-with-cpp -c $< -o $@
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# "-x assembler-with-cpp" should not be necessary since this is the default
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# file type for the .S (with capital S) extension. However, upper case
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# characters are not always preserved on Windows. To ensure WinAVR
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# compatibility define the file type manually.
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.c.s:
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$(COMPILE) -S $< -o $@
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flash: all
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avrdude -c usbasp -p t26 -U flash:w:firmware.hex
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fuses:
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|
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avrdude -c usbasp -p t26 -U lfuse:w:0x61:m # -U hfuse:w:0xf7:m # internal 8Mhz oscillator
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|
|
## what are the source dependencies
|
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|
|
%.d: %.c
|
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|
|
@set -e; rm -f $@; \
|
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|
|
$(COMPILE) -MM $< | sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' > $@;
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|
|
# line 1: exits if anything goes wrong
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|
|
# line 2a: gcc -MM outputs dependencies
|
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|
|
# line 2b: insert the %.d into dependency list
|
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|
|
#main.c: version.h
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|
|
version.h: .svn/entries
|
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|
|
export LANG=POSIX; (svn info 2>/dev/null || echo "Revision: unknown") | awk '/^Revision:/ {print "#define SVNVERSION \"" $$2 "\""};' >version.h
|
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|
|
clean:
|
|
|
|
|
rm -f *.o *.hex *.obj *.i *.s *.d */*.i */*.s */*.o */*.d version.h
|
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|
|
|
|
|
|
|
|
# file targets:
|
|
|
|
|
firmware.bin: $(OBJECTS)
|
|
|
|
|
$(COMPILE) -o firmware.bin $(OBJECTS)
|
|
|
|
|
|
|
|
|
|
firmware.hex: firmware.bin
|
|
|
|
|
rm -f firmware.hex firmware.eep.hex
|
|
|
|
|
avr-objcopy -j .text -j .data -O ihex firmware.bin firmware.hex
|
|
|
|
|
avr-size firmware.bin
|
|
|
|
|
# ./checksize firmware.bin 8192 960
|
|
|
|
|
# do the checksize script as our last action to allow successful compilation
|
|
|
|
|
# on Windows with WinAVR where the Unix commands will fail.
|
|
|
|
|
|
|
|
|
|
disasm: firmware.bin
|
|
|
|
|
avr-objdump -d firmware.bin >disasm
|
|
|
|
|
|
|
|
|
|
functionsize: disasm
|
|
|
|
|
python avrbuild/functionsize.py
|
|
|
|
|
|
|
|
|
|
countregs: disasm
|
|
|
|
|
python avrbuild/countregs.py
|
|
|
|
|
|
|
|
|
|
# for depends:
|
|
|
|
|
-include $(OBJECTS:.o=.d)
|
