/
Makefile
104 lines (83 loc) · 3.18 KB
/
Makefile
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# Copyright (c) 2012, Jan Vaughan
# All rights reserved.
#
# Makefile for firmware.
#
# OBJECTS ...... Object files to build.
# PROGRAMMER ... Options defining the programmer hardware and the interface it
# is connected to. Alternatively, leave this undefined and define
# defaults in ~/.avrduderc, e.g:
# default_programmer = "stk500v2"
# default_serial = "avrdoper"
# DEVICE ....... AVR hardware device to compile for.
# CLOCK ........ Target AVR clock rate in Hertz.
# FUSES ........ Fuse settings for the device. Calculator available at:
# http://www.engbedded.com/fusecalc/
OBJECTS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o usbdrv/oddebug.o oscillator.o main.o
INCLUDES = -Iusbdrv -I.
PROGRAMMER =
DEVICE = attiny85
CLOCK = 16500000
FUSES = -U lfuse:w:0xf1:m -U hfuse:w:0xd7:m -U efuse:w:0xff:m
# Fuse extended byte:
# 0xff = 1 1 1 1 1 1 1 1
# ^
# +---- SELFPRGEN (disallow self programming)
# Fuse high byte:
# 0xd7 = 1 1 0 1 0 1 1 1
# ^ ^ ^ ^ ^ \-+-/
# | | | | | +------ BODLEVEL 2..0 (brownout detection disabled)
# | | | | +---------- EESAVE (preserve EEPROM on flash)
# | | | +-------------- WDTON (no watchdog)
# | | +---------------- SPIEN (allow serial programming)
# | +------------------ DWEN (no debug wire)
# +-------------------- RSTDISBL (keep reset pin)
# Fuse low byte:
# 0xf1 = 1 1 1 1 0 0 0 1
# ^ ^ \ / \--+--/
# | | | +------- CKSEL 3..0 (16MHz internal HF PLL clock)
# | | +--------------- SUT 1..0 (slowly rising power)
# | +------------------ CKOUT (don't share clock)
# +-------------------- CKDIV8 (no clock division)
# Tune the lines below only if you know what you are doing:
AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE)
COMPILE = avr-gcc -Wall -Os $(INCLUDES) -DF_CPU=$(CLOCK) -mmcu=$(DEVICE) -DDEBUG_LEVEL=0
# symbolic targets:
all: main.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:main.hex:i
fuse:
$(AVRDUDE) $(FUSES)
readcal:
$(AVRDUDE) -U calibration:r:/dev/stdout:i | head -1
# Xcode uses the Makefile targets "", "clean" and "install"
install: flash fuse
# if you use a bootloader, change the command below appropriately:
load: all
bootloadHID main.hex
clean:
rm -f main.hex main.elf $(OBJECTS) usbdrv/oddebug.s usbdrv/usbdrv.s .DS_Store usbdrv/.DS_Store
# file targets:
main.elf: $(OBJECTS)
$(COMPILE) -o main.elf $(OBJECTS)
main.hex: main.elf
rm -f main.hex
avr-objcopy -j .text -j .data -O ihex main.elf main.hex
avr-size --format=avr --mcu=$(DEVICE) main.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: main.elf
avr-objdump -d main.elf
cpp:
$(COMPILE) -E main.c