# Name: Makefile # Project: USBaspLoader # Author: Christian Starkjohann # Creation Date: 2007-12-10 # Tabsize: 4 # Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH # License: GNU GPL v2 (see License.txt) # This Revision: $Id$ ############################################################################### # Configure the following variables according to your AVR. # Program the device with # make fuse # to set the clock generator, boot section size etc. # make flash # to load the boot loader into flash # make lock # to protect the boot loader from overwriting F_CPU = 16000000 DEVICE = atmega8 # BOOTLOADER_ADDRESS is 1800 for 8k devices, 3800 for 16k and 7800 for 32k. BOOTLOADER_ADDRESS = 1800 FUSEOPT = $(FUSEOPT_8) LOCKOPT = -U lock:w:0x2f:m PROGRAMMER = -c usbasp # PROGRAMMER contains AVRDUDE options to address your programmer FUSEOPT_8 = -U lfuse:w:0xbf:m -U hfuse:w:0xc0:m FUSEOPT_88 = -U hfuse:w:0xd6:m -U lfuse:w:0xdf:m -U efuse:w:0x00:m FUSEOPT_168 = -U hfuse:w:0xd6:m -U lfuse:w:0xdf:m -U efuse:w:0x00:m FUSEOPT_328 = -U lfuse:w:0xf7:m -U hfuse:w:0xda:m -U efuse:w:0x03:m # You may have to change the order of these -U commands. #--------------------------------------------------------------------- # ATMega8 #--------------------------------------------------------------------- # Fuse high byte: # 0xc0 = 1 1 0 0 0 0 0 0 <-- BOOTRST (boot reset vector at 0x1800) # ^ ^ ^ ^ ^ ^ ^------ BOOTSZ0 # | | | | | +-------- BOOTSZ1 # | | | | + --------- EESAVE (preserve EEPROM over chip erase) # | | | +-------------- CKOPT (full output swing) # | | +---------------- SPIEN (allow serial programming) # | +------------------ WDTON (WDT not always on) # +-------------------- RSTDISBL (reset pin is enabled) # Fuse low byte: # 0x9f = 1 0 0 1 1 1 1 1 # ^ ^ \ / \--+--/ # | | | +------- CKSEL 3..0 (external >8M crystal) # | | +--------------- SUT 1..0 (crystal osc, BOD enabled) # | +------------------ BODEN (BrownOut Detector enabled) # +-------------------- BODLEVEL (2.7V) #--------------------------------------------------------------------- # ATMega88, ATMega168 #--------------------------------------------------------------------- # Fuse extended byte: # 0x00 = 0 0 0 0 0 0 0 0 <-- BOOTRST (boot reset vector at 0x1800) # \+/ # +------- BOOTSZ (00 = 2k bytes) # Fuse high byte: # 0xd6 = 1 1 0 1 0 1 1 0 # ^ ^ ^ ^ ^ \-+-/ # | | | | | +------ BODLEVEL 0..2 (110 = 1.8 V) # | | | | + --------- EESAVE (preserve EEPROM over chip erase) # | | | +-------------- WDTON (if 0: watchdog always on) # | | +---------------- SPIEN (allow serial programming) # | +------------------ DWEN (debug wire enable) # +-------------------- RSTDISBL (reset pin is enabled) # Fuse low byte: # 0xdf = 1 1 0 1 1 1 1 1 # ^ ^ \ / \--+--/ # | | | +------- CKSEL 3..0 (external >8M crystal) # | | +--------------- SUT 1..0 (crystal osc, BOD enabled) # | +------------------ CKOUT (if 0: Clock output enabled) # +-------------------- CKDIV8 (if 0: divide by 8) #--------------------------------------------------------------------- # ATMega328P #--------------------------------------------------------------------- # Fuse extended byte: # 0x03 = - - - - - 0 1 1 # \-+-/ # +------ BODLEVEL 0..2 (011 = 4.3V) # Fuse high byte: # 0xda = 1 1 0 1 1 0 1 0 <-- BOOTRST (0 = jump to bootloader at start) # ^ ^ ^ ^ ^ \+/ # | | | | | +------- BOOTSZ 0..1 (01 = 2KB starting at 0x7800) # | | | | + --------- EESAVE (don't preserve EEPROM over chip erase) # | | | +-------------- WDTON (1 = watchdog disabled at start) # | | +---------------- SPIEN (0 = allow serial programming) # | +------------------ DWEN (1 = debug wire disable) # +-------------------- RSTDISBL (1 = reset pin is enabled) # Fuse low byte: # 0xf7 = 1 1 1 1 0 1 1 1 # ^ ^ \ / \--+--/ # | | | +------- CKSEL 3..0 (0111 = external full-swing crystal) # | | +--------------- SUT 1..0 (11 = startup time 16K CK/14K + 65ms) # | +------------------ CKOUT (1 = clock output disabled) # +-------------------- CKDIV8 (1 = do not divide clock by 8) ############################################################################### # Tools: AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE) CC = avr-gcc # Options: DEFINES = #-DDEBUG_LEVEL=2 # Remove the -fno-* options when you use gcc 3, it does not understand them CFLAGS = -Wall -Os -fno-move-loop-invariants -fno-tree-scev-cprop -fno-inline-small-functions -I. -mmcu=$(DEVICE) -DF_CPU=$(F_CPU) $(DEFINES) LDFLAGS = -Wl,--relax,--gc-sections -Wl,--section-start=.text=$(BOOTLOADER_ADDRESS) OBJECTS = usbdrv/usbdrvasm.o usbdrv/oddebug.o main.o # symbolic targets: all: main.hex .c.o: $(CC) $(CFLAGS) -c $< -o $@ .S.o: $(CC) $(CFLAGS) -x assembler-with-cpp -c $< -o $@ # "-x assembler-with-cpp" should not be necessary since this is the default # file type for the .S (with capital S) extension. However, upper case # characters are not always preserved on Windows. To ensure WinAVR # compatibility define the file type manually. .c.s: $(CC) $(CFLAGS) -S $< -o $@ flash: all $(AVRDUDE) -U flash:w:main.hex:i readflash: $(AVRDUDE) -U flash:r:read.hex:i fuse: $(AVRDUDE) $(FUSEOPT) lock: $(AVRDUDE) $(LOCKOPT) read_fuses: $(UISP) --rd_fuses clean: rm -f main.hex main.bin *.o usbdrv/*.o main.s usbdrv/oddebug.s usbdrv/usbdrv.s # file targets: main.bin: $(OBJECTS) $(CC) $(CFLAGS) -o main.bin $(OBJECTS) $(LDFLAGS) main.hex: main.bin rm -f main.hex main.eep.hex avr-objcopy -j .text -j .data -O ihex main.bin main.hex avr-size main.hex disasm: main.bin avr-objdump -d main.bin cpp: $(CC) $(CFLAGS) -E main.c # Special rules for generating hex files for various devices and clock speeds ALLHEXFILES = hexfiles/mega8_12mhz.hex hexfiles/mega8_15mhz.hex hexfiles/mega8_16mhz.hex \ hexfiles/mega88_12mhz.hex hexfiles/mega88_15mhz.hex hexfiles/mega88_16mhz.hex hexfiles/mega88_20mhz.hex\ hexfiles/mega168_12mhz.hex hexfiles/mega168_15mhz.hex hexfiles/mega168_16mhz.hex hexfiles/mega168_20mhz.hex\ hexfiles/mega328p_12mhz.hex hexfiles/mega328p_15mhz.hex hexfiles/mega328p_16mhz.hex hexfiles/mega328p_20mhz.hex allhexfiles: $(ALLHEXFILES) $(MAKE) clean avr-size hexfiles/*.hex $(ALLHEXFILES): @[ -d hexfiles ] || mkdir hexfiles @device=`echo $@ | sed -e 's|.*/mega||g' -e 's|_.*||g'`; \ clock=`echo $@ | sed -e 's|.*_||g' -e 's|mhz.*||g'`; \ addr=`echo $$device | sed -e 's/\([0-9]\)8/\1/g' | awk '{printf("%x", ($$1 - 2) * 1024)}'`; \ echo "### Make with F_CPU=$${clock}000000 DEVICE=atmega$$device BOOTLOADER_ADDRESS=$$addr"; \ $(MAKE) clean; \ $(MAKE) main.hex F_CPU=$${clock}000000 DEVICE=atmega$$device BOOTLOADER_ADDRESS=$$addr DEFINES=-DUSE_AUTOCONFIG=1 mv main.hex $@