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+##
+## spreadspace avr utils
+##
+##
+## Copyright (C) 2012 Christian Pointner <equinox@spreadspace.org>
+##
+## This file is part of spreadspace avr utils.
+##
+## spreadspace avr utils is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## any later version.
+##
+## spreadspace avr utils is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
+##
+
+ifeq ($(BOARD_TYPE),teensy1)
+MCU := at90usb162
+F_CPU := 16000000
+PROG := teensy
+endif
+ifeq ($(BOARD_TYPE),teensy2)
+MCU := atmega32u4
+F_CPU := 16000000
+PROG := teensy
+endif
+ifeq ($(BOARD_TYPE),teensypp1)
+MCU := at90usb646
+F_CPU := 16000000
+PROG := teensy
+endif
+ifeq ($(BOARD_TYPE),teensypp2)
+MCU := at90usb1286
+F_CPU := 16000000
+PROG := teensy
+endif
+ifeq ($(BOARD_TYPE),hhd70dongle)
+MCU := atmega32u4
+F_CPU := 16000000
+PROG := DFU
+endif
+ifeq ($(BOARD_TYPE),arduino2009)
+MCU := atmega168
+F_CPU := 16000000
+PROG := avrdude
+UPLOAD_RATE := 19200
+PROG_TYPE := stk500v1
+AVRDUDE_PORT := /dev/ttyUSB0
+endif
+
+CC = avr-gcc
+OBJCOPY = avr-objcopy
+
+DFU = dfu-programmer
+teensy = teensy_loader_cli
+avrdude = avrdude
+
+## Options common to compile, link and assembly rules
+COMMON = -mmcu=$(MCU)
+
+## Compile options common for all C compilation units.
+CFLAGS = $(COMMON)
+CFLAGS += -O2
+CFLAGS += -funsigned-char
+CFLAGS += -funsigned-bitfields
+CFLAGS += -ffunction-sections
+CFLAGS += -fpack-struct
+CFLAGS += -fshort-enums
+CFLAGS += -Wall
+CFLAGS += -Wstrict-prototypes
+CFLAGS += -DF_CPU=$(F_CPU)UL
+CFLAGS += -D__BOARD_$(BOARD_TYPE)__
+
+## Linker flags
+LDFLAGS = $(COMMON)
+LDFLAGS +=
+
+SRC := $(OBJ:%.o=%.c)
+
+.PHONY: clean program erase flash reset run
+
+ELFFILE := $(NAME).elf
+HEXFILE := $(NAME).hex
+
+all: $(HEXFILE)
+
+%.d: %.c
+ @set -e; rm -f $@; \
+ $(CC) -MM $(CFLAGS) $< > $@.$$$$; \
+ sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
+ rm -f $@.$$$$; echo '(re)building $@'
+
+ifneq ($(MAKECMDGOALS),distclean)
+-include $(SRC:%.c=%.d)
+endif
+
+%.o: %.c
+ $(CC) $(CFLAGS) -c $<
+
+$(ELFFILE): $(OBJ)
+ $(CC) $(OBJ) -o $@ $(LDFLAGS)
+
+$(HEXFILE): $(ELFFILE)
+ $(OBJCOPY) -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@
+
+clean:
+ rm -f *.o
+ rm -f *.d
+ rm -f *.d.*
+ rm -f $(ELFFILE)
+ rm -f $(HEXFILE)
+
+
+### DFU-Programmer
+define DFU/erase
+ $(DFU) $(MCU) erase || true
+endef
+
+define DFU/flash
+ $(DFU) $(MCU) flash $1
+endef
+
+define DFU/reset
+ $(DFU) $(MCU) reset
+endef
+
+define DFU/run
+ $(DFU) $(MCU) start
+endef
+
+### teensy-loader
+define teensy/erase
+endef
+
+define teensy/flash
+ $(teensy) -mmcu=$(MCU) -w -v $1
+endef
+
+define teensy/reset
+endef
+
+define teensy/run
+endef
+
+### avrdude
+define avrdude/erase
+ $(avrdude) -V -F -p $(MCU) -P $(AVRDUDE_PORT) -c $(PROG_TYPE) -b $(UPLOAD_RATE) -e
+endef
+
+define avrdude/flash
+ $(avrdude) -V -F -p $(MCU) -P $(AVRDUDE_PORT) -c $(PROG_TYPE) -b $(UPLOAD_RATE) -D -U flash:w:$1
+endef
+
+define avrdude/reset
+endef
+
+define avrdude/run
+endef
+
+### Program Targets
+program: erase flash run
+
+erase:
+ $(call $(PROG)/$@,)
+
+flash: $(HEXFILE)
+ $(call $(PROG)/$@,$(HEXFILE))
+
+reset:
+ $(call $(PROG)/$@,)
+
+run:
+ $(call $(PROG)/$@,)