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Makefile
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#/***********************************************************/
#/* ____ ___ _ _ ___ ___ ____ _ */
#/* | _ \_ _| | | |_ _/ _ \ / ___| | ___ _ __ ___ */
#/* | |_) | || | | || | | | | | | | |/ _ \| '_ \ / _ \ */
#/* | __/| || |_| || | |_| | | |___| | (_) | | | | __/ */
#/* |_| |___|\___/|___\___/ \____|_|\___/|_| |_|\___| */
#/* */
#/* By: Lucas Teske */
#/***********************************************************/
#/* Basicly this is an PIUIO Clone with an ATMEGA328 */
#/* It uses V-USB for the USB Interface and few chips */
#/***********************************************************/
#/* License is GPLv3 */
#/* Please consult https://github.com/racerxdl/piuio_clone */
#/***********************************************************/
DEVICE = atmega328
F_CPU = 16000000 # in Hz
AVRDUDE = avrdude -c usbasp -p m328p # edit this line for your programmer
CFLAGS = -Iusbdrv -I. -DDEBUG_LEVEL=0
OBJECTS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o usbdrv/oddebug.o main.o
COMPILE = avr-gcc -Wall -Os -DF_CPU=$(F_CPU) $(CFLAGS) -mmcu=$(DEVICE)
##############################################################################
# Fuse values for particular devices
##############################################################################
# If your device is not listed here, go to
# http://palmavr.sourceforge.net/cgi-bin/fc.cgi
# and choose options for external crystal clock and no clock divider
#
################################ ATTiny2313 #################################
# ATTiny2313 FUSE_L (Fuse low byte):
# 0xef = 1 1 1 0 1 1 1 1
# ^ ^ \+/ \--+--/
# | | | +------- CKSEL 3..0 (clock selection -> crystal @ 12 MHz)
# | | +--------------- SUT 1..0 (BOD enabled, fast rising power)
# | +------------------ CKOUT (clock output on CKOUT pin -> disabled)
# +-------------------- CKDIV8 (divide clock by 8 -> don't divide)
# ATTiny2313 FUSE_H (Fuse high byte):
# 0xdb = 1 1 0 1 1 0 1 1
# ^ ^ ^ ^ \-+-/ ^
# | | | | | +---- RSTDISBL (disable external reset -> enabled)
# | | | | +-------- BODLEVEL 2..0 (brownout trigger level -> 2.7V)
# | | | +-------------- WDTON (watchdog timer always on -> disable)
# | | +---------------- SPIEN (enable serial programming -> enabled)
# | +------------------ EESAVE (preserve EEPROM on Chip Erase -> not preserved)
# +-------------------- DWEN (debug wire enable)
# symbolic targets:
help:
@echo "This Makefile has no default rule. Use one of the following:"
@echo "make hex ....... to build main.hex"
@echo "make program ... to flash fuses and firmware"
@echo "make fuse ...... to flash the fuses"
@echo "make flash ..... to flash the firmware (use this on metaboard)"
@echo "make clean ..... to delete objects and hex file"
hex: main.hex
program: flash fuse
# rule for programming fuse bits:
fuse:
#@[ "$(FUSE_H)" != "" -a "$(FUSE_L)" != "" ] || \
# { echo "*** Edit Makefile and choose values for FUSE_L and FUSE_H!"; exit 1; }
$(AVRDUDE) -U hfuse:w:0xd9:m -U lfuse:w:0xff:m
# rule for uploading firmware:
flash: main.hex
$(AVRDUDE) -U flash:w:main.hex:i
chmod 777 -R *
# rule for deleting dependent files (those which can be built by Make):
clean:
rm -f main.hex main.lst main.obj main.cof main.list main.map main.eep.hex main.elf *.o usbdrv/*.o main.s usbdrv/oddebug.s usbdrv/usbdrv.s
# Generic rule for compiling C files:
.c.o:
$(COMPILE) -c $< -o $@
# Generic rule for assembling Assembler source files:
.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.
# Generic rule for compiling C to assembler, used for debugging only.
.c.s:
$(COMPILE) -S $< -o $@
# file targets:
main.elf: usbdrv $(OBJECTS) # usbdrv dependency only needed because we copy it
$(COMPILE) -o main.elf $(OBJECTS)
main.hex: main.elf
rm -f main.hex main.eep.hex
avr-objcopy -j .text -j .data -O ihex main.elf main.hex
avr-size main.hex
# debugging targets:
disasm: main.elf
avr-objdump -d main.elf
cpp:
$(COMPILE) -E main.c