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Makefile
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Makefile
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# Name: Makefile
# Author: Chris Gorman <[email protected]>
# License: GNU Public License v3.0
# This is a prototype Makefile. Modify it according to your needs.
# You should at least check the settings for
# DEVICE ....... The AVR device you compile for
# CLOCK ........ Target AVR clock rate in Hertz
# OBJECTS ...... The object files created from your source files. This list is
# usually the same as the list of source files with suffix ".o".
# PROGRAMMER ... Options to avrdude which define the hardware you use for
# uploading to the AVR and the interface where this hardware
# is connected. We recommend that you leave it undefined and
# add settings like this to your ~/.avrduderc file:
# default_programmer = "stk500v2"
# default_serial = "avrdoper"
# FUSES ........ Parameters for avrdude to flash the fuses appropriately.
DEVICE = atmega162
CLOCK = 1000000
PROGRAMMER = -c usbtiny -P usb
OBJECTS = debounce.o clock.o lcd.o
#FIXME The next line is used with 32768Hz clock, shouldn't be needed as
# we are now using an external 4MHz clock
#FUSES = -U hfuse:w:0x99:m -U lfuse:w:0xe5:m -U efuse:w:0xff:m
#FIXME This is the factory settings for the atmega162
#FUSES = -U lfuse:w:0x62:m -U hfuse:w:0x99:m -U efuse:w:0xff:m
#FIXME This is the setting for an external 4MHz clock
FUSES = -U lfuse:w:0xFD:m -U hfuse:w:0x99:m -U efuse:w:0xff:m
# ATMega8 fuse bits used above (fuse bits for other devices are different!):
# Example for 8 MHz internal oscillator
# Fuse high byte:
# 0xd9 = 1 1 0 1 1 0 0 1 <-- BOOTRST (boot reset vector at 0x0000)
# ^ ^ ^ ^ ^ ^ ^------ BOOTSZ0
# | | | | | +-------- BOOTSZ1
# | | | | +---------- EESAVE (set to 0 to preserve EEPROM over chip erase)
# | | | +-------------- CKOPT (clock option, depends on oscillator type)
# | | +---------------- SPIEN (if set to 1, serial programming is disabled)
# | +------------------ WDTON (if set to 0, watchdog is always on)
# +-------------------- RSTDISBL (if set to 0, RESET pin is disabled)
# Fuse low byte:
# 0x24 = 0 0 1 0 0 1 0 0
# ^ ^ \ / \--+--/
# | | | +------- CKSEL 3..0 (8M internal RC)
# | | +--------------- SUT 1..0 (slowly rising power)
# | +------------------ BODEN (if 0, brown-out detector is enabled)
# +-------------------- BODLEVEL (if 0: 4V, if 1: 2.7V)
#
# For computing fuse byte values for other devices and options see
# the fuse bit calculator at http://www.engbedded.com/fusecalc/
# Tune the lines below only if you know what you are doing:
AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE)
COMPILE = avr-gcc -Wall -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE)
# symbolic targets:
all: clock.hex
.c.o:
$(COMPILE) -c $< -o $@
.S.o:
$(COMPILE) -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:
$(COMPILE) -S $< -o $@
flash: all
$(AVRDUDE) -U flash:w:clock.hex:i
fuse:
$(AVRDUDE) $(FUSES)
# Xcode uses the Makefile targets "", "clean" and "install"
install: flash fuse
# if you use a bootloader, change the command below appropriately:
load: all
bootloadHID clock.hex
clean:
rm -f clock.hex clock.elf $(OBJECTS)
# file targets:
clock.elf: $(OBJECTS)
$(COMPILE) -o clock.elf $(OBJECTS)
clock.hex: clock.elf
rm -f clock.hex
avr-objcopy -j .text -j .data -O ihex clock.elf clock.hex
avr-size clock.elf
# If you have an EEPROM section, you must also create a hex file for the
# EEPROM and add it to the "flash" target.
# Targets for code debugging and analysis:
disasm: clock.elf
avr-objdump -d clock.elf
cpp:
$(COMPILE) -E clock.c