Makefile.vusb

# Name: Makefile.vusb
# Project: Kinesis Ergonomic Keyboard Firmware Replacement (v-usb)
# Author: Christian Starkjohann, Chris Andreae
# Creation Date: 2012-08-12
# Tabsize: 4
# Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH, 2012 by Chris Andreae
# License: GNU GPL v2 (see GPL2.txt)

# Select hardware variant
HARDWARE_VARIANT ?= KINESIS
HAS_EXTERNAL_STORAGE ?= 1

DEVICE  = atmega32
AVRDUDE_DEVICE = atmega32

FUSE_L  = 0xFF
FUSE_H  = 0xC1

F_CPU   = 16000000	# in Hz
AVRDUDE = avrdude -c usbasp -p $(AVRDUDE_DEVICE) # edit this line for your programmer

CFLAGS  = -I. -Ivusb -Ivusb/usbdrv -DDEBUG_LEVEL=0 -DHARDWARE_VARIANT=$(HARDWARE_VARIANT) -DBUILD_FOR_VUSB -std=gnu99 -ffunction-sections
CFLAGS += -fshort-enums -fno-strict-aliasing -fpack-struct -funsigned-bitfields -fshort-wchar -fwrapv

ifneq ($(HAS_EXTERNAL_STORAGE),1)
  CFLAGS += -DNO_EXTERNAL_STORAGE
endif

OBJDIR = obj

SRCS = vusb/usbdrv/usbdrv.o    \
	   vusb/usbdrv/usbdrvasm.o \
	   vusb/usbdrv/oddebug.o   \
	   vusb/vusb_main.o		   \
	   Keyboard.o			   \
	   Descriptors.o		   \
	   twi.o				   \
	   printing.o			   \
	   keystate.o			   \
	   config.o				   \
	   storage.o		       \
	   storage/i2c_eeprom.o	   \
	   storage/avr_eeprom.o	   \
	   storage/avr_pgm.o	   \
	   buzzer.o				   \
	   leds.o				   \
	   hardware.o			   \
	   interpreter.o		   \
	   macro_index.o		   \
	   macro.o				   \
	   extrareport.o		   \
	   sort.o

OBJECTS = $(addprefix $(OBJDIR)/,$(addsuffix .o,$(basename $(SRCS))))

COMPILE = avr-gcc -Wall -Werror=implicit-function-declaration -Os -DF_CPU=$(F_CPU) $(CFLAGS) -mmcu=$(DEVICE)

# symbolic targets:
.PHONY: hex help program flash fuse clean

hex: vusb_main.hex

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"

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; }
	$(AVRDUDE) -U hfuse:w:$(FUSE_H):m -U lfuse:w:$(FUSE_L):m

# rule for uploading firmware:
flash: vusb_main.hex
	$(AVRDUDE) -U flash:w:vusb_main.hex:i

# rule for deleting dependent files (those which can be built by Make):
clean:
	rm -rf vusb_main.hex vusb_main.lst vusb_main.obj  vusb_main.cof  \
		vusb_main.list vusb_main.map vusb_main.eep.hex vusb_main.elf \
		obj/*

# Ensure output directories exist:
%/.made:
	mkdir -p $(dir $@)
	touch $@

# Dependencies
DEPS=$(addsuffix .d,$(basename $(OBJECTS)))
-include $(DEPS)

$(OBJECTS): | $(addsuffix .made,$(sort $(dir $(OBJECTS))))

# Generic rule for compiling C files:
$(OBJDIR)/%.o: %.c
	$(COMPILE) -c -MMD -MF ${@:.o=.d} -MT $@ -o $@ $<

# Generic rule for assembling Assembler source files:
$(OBJDIR)/%.o: %.S
	$(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.

LDFLAGS=-Wl,-Map=$(OBJDIR)/vusb_main.map \
		-Wl,--cref						 \
		-Wl,--gc-sections				 \
		-Wl,--section-start=.eeexternal=00850000

vusb_main.elf: $(OBJECTS)
	$(COMPILE) -o vusb_main.elf	$(LDFLAGS) $(OBJECTS)

vusb_main.hex: vusb_main.elf
	rm -f vusb_main.hex vusb_main.eep.hex
	avr-objcopy -j .text -j .data -O ihex vusb_main.elf vusb_main.hex
	avr-size vusb_main.hex

# debugging targets:

disasm:	vusb_main.elf
	avr-objdump -d vusb_main.elf