101 lines
3.1 KiB
Makefile
101 lines
3.1 KiB
Makefile
# Name: Makefile
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# Project: bootloadHID
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# Author: Christian Starkjohann
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# Creation Date: 2007-03-19
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# Tabsize: 4
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# Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
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# License: GNU GPL v2 (see License.txt)
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# This Revision: $Id$
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###############################################################################
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# Configure the following variables according to your AVR. The example below
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# is for an ATMega8. Program the device with
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# make fuse # to set the clock generator, boot section size etc.
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# make flash # to load the boot loader into flash
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# make lock # to protect the boot loader from overwriting
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DEVICE = atmega8
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BOOTLOADER_ADDRESS = 1800
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F_CPU = 12000000
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FUSEH = 0xc0
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FUSEL = 0x9f
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# Fuse high byte:
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# 0xc0 = 1 1 0 0 0 0 0 0 <-- BOOTRST (boot reset vector at 0x1800)
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# ^ ^ ^ ^ ^ ^ ^------ BOOTSZ0
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# | | | | | +-------- BOOTSZ1
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# | | | | + --------- EESAVE (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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###############################################################################
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AVRDUDE = avrdude -c stk500v2 -P avrdoper -p $(DEVICE)
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LDFLAGS += -Wl,--relax,--gc-sections -Wl,--section-start=.text=$(BOOTLOADER_ADDRESS)
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# Omit -fno-* options when using gcc 3, it does not support them.
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COMPILE = avr-gcc -Wall -Os -fno-move-loop-invariants -fno-tree-scev-cprop -fno-inline-small-functions -Iusbdrv -I. -mmcu=$(DEVICE) -DF_CPU=$(F_CPU) -DDEBUG_LEVEL=0 # -DTEST_MODE
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# NEVER compile the final product with debugging! Any debug output will
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# distort timing so that the specs can't be met.
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OBJECTS = usbdrv/usbdrvasm.o usbdrv/oddebug.o main.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 $@
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# "-x assembler-with-cpp" should not be necessary since this is the default
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# file type for the .S (with capital S) extension. However, upper case
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# characters are not always preserved on Windows. To ensure WinAVR
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# compatibility define the file type manually.
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.c.s:
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$(COMPILE) -S $< -o $@
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flash: all
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$(AVRDUDE) -U flash:w:main.hex:i
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readflash:
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$(AVRDUDE) -U flash:r:read.hex:i
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fuse:
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$(AVRDUDE) -U hfuse:w:$(FUSEH):m -U lfuse:w:$(FUSEL):m
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lock:
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$(AVRDUDE) -U lock:w:0x2f:m
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read_fuses:
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$(UISP) --rd_fuses
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clean:
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rm -f main.hex main.bin *.o usbdrv/*.o main.s usbdrv/oddebug.s usbdrv/usbdrv.s
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# file targets:
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main.bin: $(OBJECTS)
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$(COMPILE) -o main.bin $(OBJECTS) $(LDFLAGS)
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main.hex: main.bin
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rm -f main.hex main.eep.hex
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avr-objcopy -j .text -j .data -O ihex main.bin main.hex
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avr-size main.hex
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disasm: main.bin
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avr-objdump -d main.bin
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cpp:
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$(COMPILE) -E main.c
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