mirror of https://github.com/raphnet/4nes4snes
78 lines
2.1 KiB
Makefile
78 lines
2.1 KiB
Makefile
CC=avr-gcc
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AS=$(CC)
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LD=$(CC)
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PROGNAME=4nes4snes-m8
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CPU=atmega8
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CFLAGS=-Wall -Os -Iusbdrv -I. -mmcu=$(CPU) -DF_CPU=12000000L #-DDEBUG_LEVEL=1
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LDFLAGS=-Wl,-Map=$(PROGNAME).map -mmcu=$(CPU)
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AVRDUDE=avrdude -p m8 -P usb -c avrispmkII
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OBJS=usbdrv/usbdrv.o usbdrv/usbdrvasm.o usbdrv/oddebug.o main.o fournsnes.o devdesc.o
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HEXFILE=$(PROGNAME).hex
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ELFFILE=$(PROGNAME).elf
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# symbolic targets:
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all: $(HEXFILE)
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.c.o:
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$(CC) $(CFLAGS) -c $< -o $@
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.S.o:
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$(CC) $(CFLAGS) -x assembler-with-cpp -c $< -o $@
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# "-x assembler-with-cpp" should not be necessary since this is the default
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# file type for the .S (with capital S) extension. However, upper case
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# characters are not always preserved on Windows. To ensure WinAVR
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# compatibility define the file type manually.
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.c.s:
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$(CC) $(CFLAGS) -S $< -o $@
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clean:
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rm -f $(HEXFILE) main.lst main.obj main.cof main.list main.map main.eep.hex main.bin *.o usbdrv/*.o main.s usbdrv/oddebug.s usbdrv/usbdrv.s
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# file targets:
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$(ELFFILE): $(OBJS)
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$(LD) $(LDFLAGS) -o $(ELFFILE) $(OBJS)
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$(HEXFILE): $(ELFFILE)
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rm -f $(HEXFILE)
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avr-objcopy -j .text -j .data -O ihex $(ELFFILE) $(HEXFILE)
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./checksize $(ELFFILE)
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flash: $(HEXFILE)
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$(AVRDUDE) -Uflash:w:$(HEXFILE) -B 1.0
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# Fuse high byte:
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# 0xc9 = 1 1 0 0 1 0 0 1 <-- BOOTRST (boot reset vector at 0x0000)
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# ^ ^ ^ ^ ^ ^ ^------ BOOTSZ0
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# | | | | | +-------- BOOTSZ1
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# | | | | + --------- EESAVE (don't preserve EEPROM over chip erase)
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# | | | +-------------- CKOPT (full output swing)
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# | | +---------------- SPIEN (allow serial programming)
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# | +------------------ WDTON (WDT not always on)
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# +-------------------- RSTDISBL (reset pin is enabled)
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# Fuse low byte:
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# 0x9f = 1 0 0 1 1 1 1 1
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# ^ ^ \ / \--+--/
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# | | | +------- CKSEL 3..0 (external >8M crystal)
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# | | +--------------- SUT 1..0 (crystal osc, BOD enabled)
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# | +------------------ BODEN (BrownOut Detector enabled)
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# +-------------------- BODLEVEL (2.7V)
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LFUSE=0x9F
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HFUSE=0xC9
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fuse:
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$(AVRDUDE) -e -Uhfuse:w:$(HFUSE):m -Ulfuse:w:$(LFUSE):m -B 20.0 -v
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chip_erase:
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$(AVRDUDE) -e -B 1.0 -F
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reset:
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$(AVRDUDE) -B 1.0 -F
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