3 # Copyright (C) Dean Camera, 2012.
5 # dean [at] fourwalledcubicle [dot] com
8 # --------------------------------------
9 # LUFA Project Makefile.
10 # --------------------------------------
12 # Starting byte address of the bootloader, as a byte address - computed via the formula
13 # BOOT_START = ((FLASH_SIZE_KB - BOOT_SECTION_SIZE_KB) * 1024)
15 # Note that the bootloader size and start address given in AVRStudio is in words and not
16 # bytes, and so will need to be doubled to obtain the byte address needed by AVR-GCC.
18 BOOT_SECTION_SIZE_KB := 8
20 # Formulas used to calculate the starting address of the Bootloader section, and the User Application
21 # API jump table (for more information on the latter, see the bootloader documentation). These formulas
22 # should not need to be altered - modify the FLASH_SIZE_KB and BOOT_SECTION_KB values above instead.
23 BOOT_START := 0x$(shell echo "obase=16; ($(FLASH_SIZE_KB) - $(BOOT_SECTION_SIZE_KB)) * 1024" | bc)
24 BOOT_API_TABLESTART := 0x$(shell echo "obase=16; (($(FLASH_SIZE_KB) * 1024) - 96)" | bc)
32 TARGET = BootloaderDFU
33 SRC = $(TARGET).c Descriptors.c BootloaderAPI.c BootloaderAPITable.S $(LUFA_SRC_USB)
34 LUFA_PATH = ../../LUFA/
35 CC_FLAGS = -DUSE_LUFA_CONFIG_HEADER -IConfig/ -DBOOT_START_ADDR=$(BOOT_START)
36 LD_FLAGS = -Wl,--section-start=.text=$(BOOT_START) -Wl,--section-start=.apitable=$(BOOT_API_TABLESTART) -Wl,--undefined=BootloaderAPI_JumpTable
41 # Include LUFA build script makefiles
42 include $(LUFA_PATH)/Build/lufa.core.in
43 include $(LUFA_PATH)/Build/lufa.sources.in
44 include $(LUFA_PATH)/Build/lufa.build.in
45 include $(LUFA_PATH)/Build/lufa.cppcheck.in
46 include $(LUFA_PATH)/Build/lufa.doxygen.in
47 include $(LUFA_PATH)/Build/lufa.avrdude.in
48 include $(LUFA_PATH)/Build/lufa.atprogram.in