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# Name: Makefile
# Project: Upgrade - based on Micronucleus makefile
# Author: Jenna Fox; portions by Christian Starkjohann, Louis Beaudoin
# Creation Date: 2012-10-4
# Tabsize: 4
# License: GNU GPL v2 (see License.txt)
###############################################################################
# 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
# make disablereset # for ATtiny85 target - to use external reset line for IO (CAUTION: this is not easy to enable again, see README)
F_CPU = 16500000
DEVICE = attiny85
FUSEOPT = $(FUSEOPT_t85)
LOCKOPT = -U lock:w:0x2f:m
# app starts two pages in, so we can mess around with the first page for leet ISR hax
APP_ADDRESS = 80
PROGRAMMER = -c USBasp
# PROGRAMMER contains AVRDUDE options to address your programmer
FUSEOPT_8 = -U hfuse:w:0xc0:m -U lfuse:w:0x9f: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
FUSEOPT_t85 = -U lfuse:w:0xe1:m -U hfuse:w:0xdd:m -U efuse:w:0xfe:m
FUSEOPT_t85_DISABLERESET = -U lfuse:w:0xe1:m -U efuse:w:0xfe:m -U hfuse:w:0x5d: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)
#---------------------------------------------------------------------
# ATtiny85
#---------------------------------------------------------------------
# Fuse extended byte:
# 0xFE = - - - - - 1 1 0
# ^
# |
# +---- SELFPRGEN (enable self programming flash)
#
# Fuse high byte:
# 0xdd = 1 1 0 1 1 1 0 1
# ^ ^ ^ ^ ^ \-+-/
# | | | | | +------ BODLEVEL 2..0 (brownout trigger level -> 2.7V)
# | | | | +---------- EESAVE (preserve EEPROM on Chip Erase -> not preserved)
# | | | +-------------- WDTON (watchdog timer always on -> disable)
# | | +---------------- SPIEN (enable serial programming -> enabled)
# | +------------------ DWEN (debug wire enable)
# +-------------------- RSTDISBL (disable external reset -> enabled)
#
# Fuse high byte ("no reset": external reset disabled, can't program through SPI anymore)
# 0x5d = 0 1 0 1 1 1 0 1
# ^ ^ ^ ^ ^ \-+-/
# | | | | | +------ BODLEVEL 2..0 (brownout trigger level -> 2.7V)
# | | | | +---------- EESAVE (preserve EEPROM on Chip Erase -> not preserved)
# | | | +-------------- WDTON (watchdog timer always on -> disable)
# | | +---------------- SPIEN (enable serial programming -> enabled)
# | +------------------ DWEN (debug wire enable)
# +-------------------- RSTDISBL (disable external reset -> disabled!)
#
# Fuse low byte:
# 0xe1 = 1 1 1 0 0 0 0 1
# ^ ^ \+/ \--+--/
# | | | +------- CKSEL 3..0 (clock selection -> HF PLL)
# | | +--------------- SUT 1..0 (BOD enabled, fast rising power)
# | +------------------ CKOUT (clock output on CKOUT pin -> disabled)
# +-------------------- CKDIV8 (divide clock by 8 -> don't divide)
###############################################################################
# Tools:
AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE)
CC = avr-gcc
# Options:
DEFINES = -DAPP_ADDRESS=0x$(APP_ADDRESS) #-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. -Ilibs-device -mmcu=$(DEVICE) -DF_CPU=$(F_CPU) $(DEFINES)
LDFLAGS = -Wl,--relax,--gc-sections -Wl,--section-start=.text=$(APP_ADDRESS),-Map=upgrade.map
OBJECTS = upgrade.o
# symbolic targets:
all: upgrade.hex
.c.o:
$(CC) $(CFLAGS) -c $< -o $@ -Wa,-ahls=$<.lst
.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:upgrade.hex:i
readflash:
$(AVRDUDE) -U flash:r:read.hex:i
fuse:
$(AVRDUDE) $(FUSEOPT)
disablereset:
$(AVRDUDE) $(FUSEOPT_t85_DISABLERESET)
lock:
$(AVRDUDE) $(LOCKOPT)
read_fuses:
$(UISP) --rd_fuses
clean:
rm -f upgrade.hex upgrade.bin *.o upgrade.s upgrade.map upgrade.c.lst
# file targets:
upgrade.bin: $(OBJECTS)
$(CC) $(CFLAGS) -o upgrade.bin $(OBJECTS) $(LDFLAGS)
upgrade.hex: upgrade.bin
rm -f upgrade.hex upgrade.eep.hex
avr-objcopy -j .text -j .data -O ihex upgrade.bin upgrade-app.hex
cat upgrade-prefix.hex upgrade-app.hex > upgrade.hex
rm upgrade-app.hex
avr-size upgrade.hex
disasm: upgrade.bin
avr-objdump -d upgrade.bin
cpp:
$(CC) $(CFLAGS) -E upgrade.c
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